/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:35:53,367 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:35:53,445 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:35:53,450 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:35:53,451 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:35:53,451 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:35:53,452 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:35:53,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:35:53,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:35:53,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:35:53,483 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:35:53,483 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:35:53,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:35:53,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:35:53,486 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:35:53,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:35:53,486 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:35:53,486 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:35:53,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:35:53,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:35:53,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:35:53,488 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:35:53,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:35:53,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:35:53,488 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:35:53,488 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:35:53,489 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:35:53,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:35:53,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:35:53,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:35:53,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:35:53,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:35:53,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:35:53,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:35:53,491 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:35:53,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:35:53,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:35:53,492 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:35:53,492 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:35:53,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:35:53,492 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:35:53,492 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:35:53,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:35:53,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:35:53,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:35:53,758 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:35:53,758 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:35:53,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow_bound2.i [2023-08-04 04:35:54,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:35:55,170 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:35:55,171 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow_bound2.i [2023-08-04 04:35:55,195 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68c03e0cf/57a0ca5208e04ef180051a6af9150b2a/FLAGaef6b587e [2023-08-04 04:35:55,208 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68c03e0cf/57a0ca5208e04ef180051a6af9150b2a [2023-08-04 04:35:55,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:35:55,211 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:35:55,212 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:35:55,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:35:55,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:35:55,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:35:55" (1/1) ... [2023-08-04 04:35:55,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@279f000d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55, skipping insertion in model container [2023-08-04 04:35:55,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:35:55" (1/1) ... [2023-08-04 04:35:55,277 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:35:55,434 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow_bound2.i[1120,1133] [2023-08-04 04:35:55,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:35:55,609 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:35:55,624 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow_bound2.i[1120,1133] [2023-08-04 04:35:55,635 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [236] [2023-08-04 04:35:55,644 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-04 04:35:55,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:35:55,699 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:35:55,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55 WrapperNode [2023-08-04 04:35:55,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:35:55,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:35:55,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:35:55,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:35:55,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55" (1/1) ... [2023-08-04 04:35:55,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55" (1/1) ... [2023-08-04 04:35:55,741 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 151 [2023-08-04 04:35:55,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:35:55,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:35:55,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:35:55,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:35:55,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55" (1/1) ... [2023-08-04 04:35:55,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55" (1/1) ... [2023-08-04 04:35:55,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55" (1/1) ... [2023-08-04 04:35:55,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55" (1/1) ... [2023-08-04 04:35:55,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55" (1/1) ... [2023-08-04 04:35:55,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55" (1/1) ... [2023-08-04 04:35:55,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55" (1/1) ... [2023-08-04 04:35:55,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55" (1/1) ... [2023-08-04 04:35:55,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:35:55,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:35:55,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:35:55,783 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:35:55,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55" (1/1) ... [2023-08-04 04:35:55,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:35:55,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:35:55,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 04:35:55,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 04:35:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:35:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:35:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:35:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:35:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 04:35:55,839 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 04:35:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:35:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:35:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:35:55,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:35:55,841 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:35:55,951 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:35:55,953 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:35:56,170 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:35:56,178 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:35:56,178 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-04 04:35:56,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:35:56 BoogieIcfgContainer [2023-08-04 04:35:56,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:35:56,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:35:56,183 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:35:56,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:35:56,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:35:55" (1/3) ... [2023-08-04 04:35:56,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abb369d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:35:56, skipping insertion in model container [2023-08-04 04:35:56,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:35:55" (2/3) ... [2023-08-04 04:35:56,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abb369d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:35:56, skipping insertion in model container [2023-08-04 04:35:56,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:35:56" (3/3) ... [2023-08-04 04:35:56,188 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow_bound2.i [2023-08-04 04:35:56,195 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:35:56,205 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:35:56,205 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-04 04:35:56,205 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:35:56,306 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:35:56,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 173 transitions, 351 flow [2023-08-04 04:35:56,463 INFO L124 PetriNetUnfolderBase]: 13/222 cut-off events. [2023-08-04 04:35:56,464 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:35:56,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 222 events. 13/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 356 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2023-08-04 04:35:56,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 173 transitions, 351 flow [2023-08-04 04:35:56,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 172 transitions, 349 flow [2023-08-04 04:35:56,497 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:35:56,509 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 172 transitions, 349 flow [2023-08-04 04:35:56,511 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 172 transitions, 349 flow [2023-08-04 04:35:56,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 172 transitions, 349 flow [2023-08-04 04:35:56,563 INFO L124 PetriNetUnfolderBase]: 12/221 cut-off events. [2023-08-04 04:35:56,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:35:56,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 221 events. 12/221 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 364 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2023-08-04 04:35:56,574 INFO L119 LiptonReduction]: Number of co-enabled transitions 8360 [2023-08-04 04:36:01,190 INFO L134 LiptonReduction]: Checked pairs total: 12840 [2023-08-04 04:36:01,190 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-08-04 04:36:01,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:36:01,207 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;@463c8773, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:36:01,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-04 04:36:01,211 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:36:01,212 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2023-08-04 04:36:01,212 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:36:01,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:01,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:01,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr2ASSERT_VIOLATIONERROR_FUNCTION, t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:36:01,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:01,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1977384226, now seen corresponding path program 1 times [2023-08-04 04:36:01,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:01,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197464873] [2023-08-04 04:36:01,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:01,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:01,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:01,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197464873] [2023-08-04 04:36:01,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197464873] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:01,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:01,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:36:01,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911374537] [2023-08-04 04:36:01,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:01,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:36:01,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:01,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:36:01,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:36:01,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 349 [2023-08-04 04:36:01,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:01,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:01,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 349 [2023-08-04 04:36:01,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:01,858 INFO L124 PetriNetUnfolderBase]: 150/353 cut-off events. [2023-08-04 04:36:01,858 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:36:01,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 353 events. 150/353 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1505 event pairs, 67 based on Foata normal form. 6/291 useless extension candidates. Maximal degree in co-relation 655. Up to 186 conditions per place. [2023-08-04 04:36:01,865 INFO L140 encePairwiseOnDemand]: 342/349 looper letters, 38 selfloop transitions, 5 changer transitions 12/61 dead transitions. [2023-08-04 04:36:01,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 61 transitions, 237 flow [2023-08-04 04:36:01,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:36:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:36:01,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 830 transitions. [2023-08-04 04:36:01,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47564469914040114 [2023-08-04 04:36:01,890 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 830 transitions. [2023-08-04 04:36:01,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 830 transitions. [2023-08-04 04:36:01,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:01,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 830 transitions. [2023-08-04 04:36:01,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:01,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:01,907 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:01,908 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 73 flow. Second operand 5 states and 830 transitions. [2023-08-04 04:36:01,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 61 transitions, 237 flow [2023-08-04 04:36:01,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 237 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:36:01,913 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 92 flow [2023-08-04 04:36:01,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-08-04 04:36:01,918 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-08-04 04:36:01,918 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 92 flow [2023-08-04 04:36:01,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:01,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:01,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:01,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:36:01,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr2ASSERT_VIOLATIONERROR_FUNCTION, t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:36:01,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:01,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1890724256, now seen corresponding path program 1 times [2023-08-04 04:36:01,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:01,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575501578] [2023-08-04 04:36:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:01,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:02,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:02,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575501578] [2023-08-04 04:36:02,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575501578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:02,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:02,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:36:02,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904585852] [2023-08-04 04:36:02,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:02,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:36:02,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:02,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:36:02,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:36:02,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 349 [2023-08-04 04:36:02,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 152.8) internal successors, (764), 5 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:02,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:02,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 349 [2023-08-04 04:36:02,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:02,293 INFO L124 PetriNetUnfolderBase]: 110/301 cut-off events. [2023-08-04 04:36:02,294 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-04 04:36:02,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 301 events. 110/301 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1263 event pairs, 48 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 604. Up to 126 conditions per place. [2023-08-04 04:36:02,297 INFO L140 encePairwiseOnDemand]: 343/349 looper letters, 46 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2023-08-04 04:36:02,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 61 transitions, 269 flow [2023-08-04 04:36:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 04:36:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 04:36:02,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1266 transitions. [2023-08-04 04:36:02,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45343839541547276 [2023-08-04 04:36:02,301 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1266 transitions. [2023-08-04 04:36:02,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1266 transitions. [2023-08-04 04:36:02,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:02,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1266 transitions. [2023-08-04 04:36:02,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 158.25) internal successors, (1266), 8 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:02,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 349.0) internal successors, (3141), 9 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:02,311 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 349.0) internal successors, (3141), 9 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:02,311 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 92 flow. Second operand 8 states and 1266 transitions. [2023-08-04 04:36:02,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 61 transitions, 269 flow [2023-08-04 04:36:02,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 61 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:36:02,316 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 135 flow [2023-08-04 04:36:02,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=135, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2023-08-04 04:36:02,317 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-08-04 04:36:02,319 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 135 flow [2023-08-04 04:36:02,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.8) internal successors, (764), 5 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:02,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:02,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:02,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:36:02,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr2ASSERT_VIOLATIONERROR_FUNCTION, t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:36:02,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:02,330 INFO L85 PathProgramCache]: Analyzing trace with hash -214795292, now seen corresponding path program 1 times [2023-08-04 04:36:02,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:02,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636025914] [2023-08-04 04:36:02,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:02,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:02,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:02,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636025914] [2023-08-04 04:36:02,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636025914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:02,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:02,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:36:02,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435176167] [2023-08-04 04:36:02,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:02,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:36:02,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:02,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:36:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:36:02,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 349 [2023-08-04 04:36:02,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 135 flow. Second operand has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:02,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:02,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 349 [2023-08-04 04:36:02,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:02,799 INFO L124 PetriNetUnfolderBase]: 135/387 cut-off events. [2023-08-04 04:36:02,799 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-08-04 04:36:02,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 387 events. 135/387 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1897 event pairs, 68 based on Foata normal form. 17/390 useless extension candidates. Maximal degree in co-relation 857. Up to 125 conditions per place. [2023-08-04 04:36:02,801 INFO L140 encePairwiseOnDemand]: 341/349 looper letters, 57 selfloop transitions, 13 changer transitions 5/79 dead transitions. [2023-08-04 04:36:02,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 79 transitions, 411 flow [2023-08-04 04:36:02,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-04 04:36:02,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-04 04:36:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1414 transitions. [2023-08-04 04:36:02,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45017510347023243 [2023-08-04 04:36:02,806 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1414 transitions. [2023-08-04 04:36:02,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1414 transitions. [2023-08-04 04:36:02,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:02,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1414 transitions. [2023-08-04 04:36:02,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 157.11111111111111) internal successors, (1414), 9 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:02,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:02,817 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:02,817 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 135 flow. Second operand 9 states and 1414 transitions. [2023-08-04 04:36:02,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 79 transitions, 411 flow [2023-08-04 04:36:02,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 395 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:36:02,824 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 193 flow [2023-08-04 04:36:02,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=193, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2023-08-04 04:36:02,825 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2023-08-04 04:36:02,825 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 193 flow [2023-08-04 04:36:02,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.83333333333334) internal successors, (905), 6 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:02,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:02,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:02,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:36:02,827 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr2ASSERT_VIOLATIONERROR_FUNCTION, t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:36:02,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:02,828 INFO L85 PathProgramCache]: Analyzing trace with hash 634717962, now seen corresponding path program 1 times [2023-08-04 04:36:02,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:02,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564192059] [2023-08-04 04:36:02,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:02,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:02,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:02,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564192059] [2023-08-04 04:36:02,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564192059] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:36:02,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254204892] [2023-08-04 04:36:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:02,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:36:02,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:36:02,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:36:02,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:36:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:02,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:36:02,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:36:03,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:03,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:36:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:03,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254204892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:36:03,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:36:03,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:36:03,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047737178] [2023-08-04 04:36:03,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:36:03,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:36:03,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:03,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:36:03,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:36:03,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 349 [2023-08-04 04:36:03,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:03,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:03,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 349 [2023-08-04 04:36:03,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:03,073 INFO L124 PetriNetUnfolderBase]: 14/40 cut-off events. [2023-08-04 04:36:03,073 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-04 04:36:03,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 40 events. 14/40 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 102. Up to 30 conditions per place. [2023-08-04 04:36:03,074 INFO L140 encePairwiseOnDemand]: 346/349 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-04 04:36:03,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 19 transitions, 112 flow [2023-08-04 04:36:03,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:36:03,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:36:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 645 transitions. [2023-08-04 04:36:03,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46203438395415475 [2023-08-04 04:36:03,076 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 645 transitions. [2023-08-04 04:36:03,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 645 transitions. [2023-08-04 04:36:03,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:03,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 645 transitions. [2023-08-04 04:36:03,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:03,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:03,081 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:03,081 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 193 flow. Second operand 4 states and 645 transitions. [2023-08-04 04:36:03,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 19 transitions, 112 flow [2023-08-04 04:36:03,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 83 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-04 04:36:03,082 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2023-08-04 04:36:03,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2023-08-04 04:36:03,083 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -12 predicate places. [2023-08-04 04:36:03,083 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2023-08-04 04:36:03,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:03,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-04 04:36:03,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-04 04:36:03,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-04 04:36:03,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-04 04:36:03,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-04 04:36:03,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-04 04:36:03,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 04:36:03,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:36:03,293 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 04:36:03,295 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:36:03,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 173 transitions, 351 flow [2023-08-04 04:36:03,321 INFO L124 PetriNetUnfolderBase]: 13/222 cut-off events. [2023-08-04 04:36:03,321 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:36:03,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 222 events. 13/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 356 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2023-08-04 04:36:03,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 173 transitions, 351 flow [2023-08-04 04:36:03,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 172 transitions, 349 flow [2023-08-04 04:36:03,324 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:36:03,324 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 172 transitions, 349 flow [2023-08-04 04:36:03,324 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 172 transitions, 349 flow [2023-08-04 04:36:03,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 172 transitions, 349 flow [2023-08-04 04:36:03,343 INFO L124 PetriNetUnfolderBase]: 12/221 cut-off events. [2023-08-04 04:36:03,344 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:36:03,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 221 events. 12/221 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 364 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2023-08-04 04:36:03,349 INFO L119 LiptonReduction]: Number of co-enabled transitions 8360 [2023-08-04 04:36:07,633 INFO L134 LiptonReduction]: Checked pairs total: 13548 [2023-08-04 04:36:07,634 INFO L136 LiptonReduction]: Total number of compositions: 178 [2023-08-04 04:36:07,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:36:07,636 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;@463c8773, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:36:07,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:36:07,639 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:36:07,639 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-08-04 04:36:07,640 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:36:07,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:07,640 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:36:07,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:36:07,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:07,640 INFO L85 PathProgramCache]: Analyzing trace with hash -480931847, now seen corresponding path program 1 times [2023-08-04 04:36:07,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:07,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103865703] [2023-08-04 04:36:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:07,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:36:07,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:36:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:36:07,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:36:07,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:36:07,688 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:36:07,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:36:07,688 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:36:07,689 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:36:07,689 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:36:07,689 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:36:07,727 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:36:07,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 250 transitions, 512 flow [2023-08-04 04:36:07,776 INFO L124 PetriNetUnfolderBase]: 22/353 cut-off events. [2023-08-04 04:36:07,776 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:36:07,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 353 events. 22/353 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 995 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 223. Up to 6 conditions per place. [2023-08-04 04:36:07,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 250 transitions, 512 flow [2023-08-04 04:36:07,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 249 transitions, 510 flow [2023-08-04 04:36:07,783 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:36:07,783 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 249 transitions, 510 flow [2023-08-04 04:36:07,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 249 transitions, 510 flow [2023-08-04 04:36:07,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 249 transitions, 510 flow [2023-08-04 04:36:07,830 INFO L124 PetriNetUnfolderBase]: 21/352 cut-off events. [2023-08-04 04:36:07,830 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:36:07,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 352 events. 21/352 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1011 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 222. Up to 6 conditions per place. [2023-08-04 04:36:07,848 INFO L119 LiptonReduction]: Number of co-enabled transitions 28424 [2023-08-04 04:36:12,865 INFO L134 LiptonReduction]: Checked pairs total: 41463 [2023-08-04 04:36:12,865 INFO L136 LiptonReduction]: Total number of compositions: 268 [2023-08-04 04:36:12,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:36:12,867 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;@463c8773, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:36:12,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-04 04:36:12,870 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:36:12,870 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-08-04 04:36:12,870 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:36:12,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:12,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:12,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:12,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:12,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1411332146, now seen corresponding path program 1 times [2023-08-04 04:36:12,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:12,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777077783] [2023-08-04 04:36:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:12,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:12,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:12,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777077783] [2023-08-04 04:36:12,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777077783] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:12,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:12,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:36:12,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858407323] [2023-08-04 04:36:12,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:12,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:36:12,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:36:12,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:36:12,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 518 [2023-08-04 04:36:12,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 223.75) internal successors, (895), 4 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:12,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:12,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 518 [2023-08-04 04:36:12,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:13,635 INFO L124 PetriNetUnfolderBase]: 4541/7250 cut-off events. [2023-08-04 04:36:13,635 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-04 04:36:13,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14350 conditions, 7250 events. 4541/7250 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 43912 event pairs, 1239 based on Foata normal form. 0/5665 useless extension candidates. Maximal degree in co-relation 10680. Up to 4026 conditions per place. [2023-08-04 04:36:13,761 INFO L140 encePairwiseOnDemand]: 511/518 looper letters, 104 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2023-08-04 04:36:13,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 116 transitions, 467 flow [2023-08-04 04:36:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:36:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:36:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1227 transitions. [2023-08-04 04:36:13,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4737451737451737 [2023-08-04 04:36:13,765 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1227 transitions. [2023-08-04 04:36:13,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1227 transitions. [2023-08-04 04:36:13,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:13,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1227 transitions. [2023-08-04 04:36:13,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.4) internal successors, (1227), 5 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:13,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 518.0) internal successors, (3108), 6 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:13,775 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 518.0) internal successors, (3108), 6 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:13,775 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 116 flow. Second operand 5 states and 1227 transitions. [2023-08-04 04:36:13,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 116 transitions, 467 flow [2023-08-04 04:36:13,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 116 transitions, 465 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-04 04:36:13,780 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 137 flow [2023-08-04 04:36:13,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-08-04 04:36:13,782 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-08-04 04:36:13,782 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 137 flow [2023-08-04 04:36:13,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 223.75) internal successors, (895), 4 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:13,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:13,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:13,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:36:13,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:13,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:13,784 INFO L85 PathProgramCache]: Analyzing trace with hash -919484643, now seen corresponding path program 1 times [2023-08-04 04:36:13,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:13,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823621027] [2023-08-04 04:36:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:13,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:13,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:13,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823621027] [2023-08-04 04:36:13,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823621027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:13,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:13,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:36:13,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330775568] [2023-08-04 04:36:13,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:13,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:36:13,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:13,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:36:13,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:36:13,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 518 [2023-08-04 04:36:13,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 137 flow. Second operand has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:13,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:13,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 518 [2023-08-04 04:36:13,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:14,994 INFO L124 PetriNetUnfolderBase]: 5555/9286 cut-off events. [2023-08-04 04:36:14,995 INFO L125 PetriNetUnfolderBase]: For 994/994 co-relation queries the response was YES. [2023-08-04 04:36:15,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19347 conditions, 9286 events. 5555/9286 cut-off events. For 994/994 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 60992 event pairs, 987 based on Foata normal form. 0/7617 useless extension candidates. Maximal degree in co-relation 15297. Up to 2983 conditions per place. [2023-08-04 04:36:15,061 INFO L140 encePairwiseOnDemand]: 508/518 looper letters, 211 selfloop transitions, 24 changer transitions 0/242 dead transitions. [2023-08-04 04:36:15,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 242 transitions, 1020 flow [2023-08-04 04:36:15,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-04 04:36:15,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-04 04:36:15,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2830 transitions. [2023-08-04 04:36:15,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552767052767053 [2023-08-04 04:36:15,069 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2830 transitions. [2023-08-04 04:36:15,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2830 transitions. [2023-08-04 04:36:15,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:15,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2830 transitions. [2023-08-04 04:36:15,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 235.83333333333334) internal successors, (2830), 12 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:15,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 518.0) internal successors, (6734), 13 states have internal predecessors, (6734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:15,087 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 518.0) internal successors, (6734), 13 states have internal predecessors, (6734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:15,087 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 137 flow. Second operand 12 states and 2830 transitions. [2023-08-04 04:36:15,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 242 transitions, 1020 flow [2023-08-04 04:36:15,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 242 transitions, 1015 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:36:15,101 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 258 flow [2023-08-04 04:36:15,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=258, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2023-08-04 04:36:15,103 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2023-08-04 04:36:15,103 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 258 flow [2023-08-04 04:36:15,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:15,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:15,104 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:15,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:36:15,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:15,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:15,105 INFO L85 PathProgramCache]: Analyzing trace with hash 609947121, now seen corresponding path program 1 times [2023-08-04 04:36:15,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:15,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303020792] [2023-08-04 04:36:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:15,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:36:15,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:15,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303020792] [2023-08-04 04:36:15,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303020792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:15,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:15,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:36:15,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069908794] [2023-08-04 04:36:15,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:15,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:36:15,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:15,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:36:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:36:15,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 518 [2023-08-04 04:36:15,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 224.25) internal successors, (897), 4 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:15,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:15,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 518 [2023-08-04 04:36:15,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:16,150 INFO L124 PetriNetUnfolderBase]: 6254/10319 cut-off events. [2023-08-04 04:36:16,150 INFO L125 PetriNetUnfolderBase]: For 5139/5219 co-relation queries the response was YES. [2023-08-04 04:36:16,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24674 conditions, 10319 events. 6254/10319 cut-off events. For 5139/5219 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 67258 event pairs, 2293 based on Foata normal form. 70/8786 useless extension candidates. Maximal degree in co-relation 18939. Up to 6922 conditions per place. [2023-08-04 04:36:16,205 INFO L140 encePairwiseOnDemand]: 513/518 looper letters, 115 selfloop transitions, 14 changer transitions 0/137 dead transitions. [2023-08-04 04:36:16,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 137 transitions, 752 flow [2023-08-04 04:36:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:36:16,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:36:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1216 transitions. [2023-08-04 04:36:16,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4694980694980695 [2023-08-04 04:36:16,209 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1216 transitions. [2023-08-04 04:36:16,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1216 transitions. [2023-08-04 04:36:16,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:16,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1216 transitions. [2023-08-04 04:36:16,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:16,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 518.0) internal successors, (3108), 6 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:16,216 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 518.0) internal successors, (3108), 6 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:16,217 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 258 flow. Second operand 5 states and 1216 transitions. [2023-08-04 04:36:16,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 137 transitions, 752 flow [2023-08-04 04:36:16,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 137 transitions, 729 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:36:16,250 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 356 flow [2023-08-04 04:36:16,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=356, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2023-08-04 04:36:16,252 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2023-08-04 04:36:16,252 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 356 flow [2023-08-04 04:36:16,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 224.25) internal successors, (897), 4 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:16,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:16,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:16,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:36:16,253 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:16,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:16,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1138673884, now seen corresponding path program 1 times [2023-08-04 04:36:16,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:16,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710723258] [2023-08-04 04:36:16,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:16,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:16,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:16,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710723258] [2023-08-04 04:36:16,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710723258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:16,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:16,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:36:16,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963448978] [2023-08-04 04:36:16,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:16,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:36:16,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:16,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:36:16,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:36:16,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 518 [2023-08-04 04:36:16,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 217.83333333333334) internal successors, (1307), 6 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:16,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:16,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 518 [2023-08-04 04:36:16,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:17,982 INFO L124 PetriNetUnfolderBase]: 8360/14331 cut-off events. [2023-08-04 04:36:17,982 INFO L125 PetriNetUnfolderBase]: For 8251/8315 co-relation queries the response was YES. [2023-08-04 04:36:18,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35840 conditions, 14331 events. 8360/14331 cut-off events. For 8251/8315 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 104180 event pairs, 2472 based on Foata normal form. 49/12601 useless extension candidates. Maximal degree in co-relation 30656. Up to 4168 conditions per place. [2023-08-04 04:36:18,061 INFO L140 encePairwiseOnDemand]: 509/518 looper letters, 199 selfloop transitions, 25 changer transitions 0/232 dead transitions. [2023-08-04 04:36:18,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 232 transitions, 1287 flow [2023-08-04 04:36:18,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-04 04:36:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-04 04:36:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2138 transitions. [2023-08-04 04:36:18,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586014586014586 [2023-08-04 04:36:18,066 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2138 transitions. [2023-08-04 04:36:18,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2138 transitions. [2023-08-04 04:36:18,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:18,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2138 transitions. [2023-08-04 04:36:18,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 237.55555555555554) internal successors, (2138), 9 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:18,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 518.0) internal successors, (5180), 10 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:18,078 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 518.0) internal successors, (5180), 10 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:18,078 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 356 flow. Second operand 9 states and 2138 transitions. [2023-08-04 04:36:18,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 232 transitions, 1287 flow [2023-08-04 04:36:18,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 232 transitions, 1272 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:36:18,176 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 520 flow [2023-08-04 04:36:18,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=520, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2023-08-04 04:36:18,178 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 33 predicate places. [2023-08-04 04:36:18,178 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 520 flow [2023-08-04 04:36:18,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.83333333333334) internal successors, (1307), 6 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:18,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:18,179 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:18,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:36:18,179 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:18,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2043579521, now seen corresponding path program 1 times [2023-08-04 04:36:18,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:18,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910471381] [2023-08-04 04:36:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:18,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:36:18,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:18,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910471381] [2023-08-04 04:36:18,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910471381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:18,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:18,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:36:18,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755282389] [2023-08-04 04:36:18,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:18,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:36:18,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:18,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:36:18,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:36:18,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 518 [2023-08-04 04:36:18,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 520 flow. Second operand has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:18,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:18,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 518 [2023-08-04 04:36:18,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:20,085 INFO L124 PetriNetUnfolderBase]: 11621/19693 cut-off events. [2023-08-04 04:36:20,085 INFO L125 PetriNetUnfolderBase]: For 18220/18374 co-relation queries the response was YES. [2023-08-04 04:36:20,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52441 conditions, 19693 events. 11621/19693 cut-off events. For 18220/18374 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 147391 event pairs, 5130 based on Foata normal form. 107/18024 useless extension candidates. Maximal degree in co-relation 37852. Up to 10462 conditions per place. [2023-08-04 04:36:20,193 INFO L140 encePairwiseOnDemand]: 512/518 looper letters, 185 selfloop transitions, 33 changer transitions 0/227 dead transitions. [2023-08-04 04:36:20,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 227 transitions, 1558 flow [2023-08-04 04:36:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 04:36:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 04:36:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1912 transitions. [2023-08-04 04:36:20,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4613899613899614 [2023-08-04 04:36:20,199 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1912 transitions. [2023-08-04 04:36:20,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1912 transitions. [2023-08-04 04:36:20,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:20,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1912 transitions. [2023-08-04 04:36:20,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:20,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 518.0) internal successors, (4662), 9 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:20,210 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 518.0) internal successors, (4662), 9 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:20,210 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 520 flow. Second operand 8 states and 1912 transitions. [2023-08-04 04:36:20,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 227 transitions, 1558 flow [2023-08-04 04:36:20,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 227 transitions, 1547 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-04 04:36:20,373 INFO L231 Difference]: Finished difference. Result has 95 places, 103 transitions, 741 flow [2023-08-04 04:36:20,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=741, PETRI_PLACES=95, PETRI_TRANSITIONS=103} [2023-08-04 04:36:20,373 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 42 predicate places. [2023-08-04 04:36:20,374 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 103 transitions, 741 flow [2023-08-04 04:36:20,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:20,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:20,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:20,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 04:36:20,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:20,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:20,375 INFO L85 PathProgramCache]: Analyzing trace with hash -949549012, now seen corresponding path program 1 times [2023-08-04 04:36:20,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:20,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646490279] [2023-08-04 04:36:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:20,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:20,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:20,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646490279] [2023-08-04 04:36:20,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646490279] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:36:20,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358410296] [2023-08-04 04:36:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:20,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:36:20,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:36:20,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:36:20,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:36:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:20,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:36:20,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:36:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:20,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:36:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:20,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358410296] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:36:20,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:36:20,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:36:20,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547000117] [2023-08-04 04:36:20,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:36:20,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:36:20,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:20,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:36:20,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:36:20,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 518 [2023-08-04 04:36:20,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 103 transitions, 741 flow. Second operand has 5 states, 5 states have (on average 226.8) internal successors, (1134), 5 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:20,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:20,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 518 [2023-08-04 04:36:20,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:22,000 INFO L124 PetriNetUnfolderBase]: 9900/16936 cut-off events. [2023-08-04 04:36:22,001 INFO L125 PetriNetUnfolderBase]: For 19631/20185 co-relation queries the response was YES. [2023-08-04 04:36:22,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46912 conditions, 16936 events. 9900/16936 cut-off events. For 19631/20185 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 128455 event pairs, 4130 based on Foata normal form. 100/15556 useless extension candidates. Maximal degree in co-relation 34389. Up to 14895 conditions per place. [2023-08-04 04:36:22,091 INFO L140 encePairwiseOnDemand]: 514/518 looper letters, 123 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2023-08-04 04:36:22,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 139 transitions, 1110 flow [2023-08-04 04:36:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:36:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:36:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 972 transitions. [2023-08-04 04:36:22,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691119691119691 [2023-08-04 04:36:22,094 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 972 transitions. [2023-08-04 04:36:22,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 972 transitions. [2023-08-04 04:36:22,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:22,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 972 transitions. [2023-08-04 04:36:22,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:22,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:22,099 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:22,099 INFO L175 Difference]: Start difference. First operand has 95 places, 103 transitions, 741 flow. Second operand 4 states and 972 transitions. [2023-08-04 04:36:22,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 139 transitions, 1110 flow [2023-08-04 04:36:22,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 139 transitions, 1064 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:36:22,243 INFO L231 Difference]: Finished difference. Result has 98 places, 105 transitions, 721 flow [2023-08-04 04:36:22,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=721, PETRI_PLACES=98, PETRI_TRANSITIONS=105} [2023-08-04 04:36:22,244 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2023-08-04 04:36:22,244 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 105 transitions, 721 flow [2023-08-04 04:36:22,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 226.8) internal successors, (1134), 5 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:22,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:22,245 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:22,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:36:22,450 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,SelfDestructingSolverStorable10 [2023-08-04 04:36:22,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:22,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:22,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1079965368, now seen corresponding path program 1 times [2023-08-04 04:36:22,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:22,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025562372] [2023-08-04 04:36:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:22,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:36:22,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:22,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025562372] [2023-08-04 04:36:22,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025562372] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:22,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:22,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:36:22,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954147462] [2023-08-04 04:36:22,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:22,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:36:22,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:22,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:36:22,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:36:22,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 518 [2023-08-04 04:36:22,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 105 transitions, 721 flow. Second operand has 4 states, 4 states have (on average 222.25) internal successors, (889), 4 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:22,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:22,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 518 [2023-08-04 04:36:22,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:24,541 INFO L124 PetriNetUnfolderBase]: 11447/19577 cut-off events. [2023-08-04 04:36:24,541 INFO L125 PetriNetUnfolderBase]: For 22021/22759 co-relation queries the response was YES. [2023-08-04 04:36:24,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55588 conditions, 19577 events. 11447/19577 cut-off events. For 22021/22759 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 150564 event pairs, 4350 based on Foata normal form. 107/18492 useless extension candidates. Maximal degree in co-relation 41031. Up to 7524 conditions per place. [2023-08-04 04:36:24,622 INFO L140 encePairwiseOnDemand]: 512/518 looper letters, 197 selfloop transitions, 9 changer transitions 0/214 dead transitions. [2023-08-04 04:36:24,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 214 transitions, 1837 flow [2023-08-04 04:36:24,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:36:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:36:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 969 transitions. [2023-08-04 04:36:24,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46766409266409265 [2023-08-04 04:36:24,625 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 969 transitions. [2023-08-04 04:36:24,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 969 transitions. [2023-08-04 04:36:24,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:24,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 969 transitions. [2023-08-04 04:36:24,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:24,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:24,629 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:24,629 INFO L175 Difference]: Start difference. First operand has 98 places, 105 transitions, 721 flow. Second operand 4 states and 969 transitions. [2023-08-04 04:36:24,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 214 transitions, 1837 flow [2023-08-04 04:36:24,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 214 transitions, 1837 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:36:24,811 INFO L231 Difference]: Finished difference. Result has 102 places, 110 transitions, 781 flow [2023-08-04 04:36:24,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=781, PETRI_PLACES=102, PETRI_TRANSITIONS=110} [2023-08-04 04:36:24,812 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2023-08-04 04:36:24,812 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 110 transitions, 781 flow [2023-08-04 04:36:24,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.25) internal successors, (889), 4 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:24,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:24,812 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:24,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 04:36:24,812 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:24,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:24,813 INFO L85 PathProgramCache]: Analyzing trace with hash 391378116, now seen corresponding path program 1 times [2023-08-04 04:36:24,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:24,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511623815] [2023-08-04 04:36:24,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:24,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:24,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:36:24,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:24,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511623815] [2023-08-04 04:36:24,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511623815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:24,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:24,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:36:24,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514868592] [2023-08-04 04:36:24,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:24,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:36:24,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:24,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:36:24,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:36:25,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 518 [2023-08-04 04:36:25,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 110 transitions, 781 flow. Second operand has 5 states, 5 states have (on average 215.4) internal successors, (1077), 5 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:25,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:25,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 518 [2023-08-04 04:36:25,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:25,591 INFO L124 PetriNetUnfolderBase]: 2517/5237 cut-off events. [2023-08-04 04:36:25,591 INFO L125 PetriNetUnfolderBase]: For 5804/5820 co-relation queries the response was YES. [2023-08-04 04:36:25,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14773 conditions, 5237 events. 2517/5237 cut-off events. For 5804/5820 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 38524 event pairs, 963 based on Foata normal form. 371/5277 useless extension candidates. Maximal degree in co-relation 11648. Up to 2538 conditions per place. [2023-08-04 04:36:25,613 INFO L140 encePairwiseOnDemand]: 506/518 looper letters, 111 selfloop transitions, 13 changer transitions 15/149 dead transitions. [2023-08-04 04:36:25,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 149 transitions, 1191 flow [2023-08-04 04:36:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:36:25,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:36:25,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 932 transitions. [2023-08-04 04:36:25,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4498069498069498 [2023-08-04 04:36:25,615 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 932 transitions. [2023-08-04 04:36:25,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 932 transitions. [2023-08-04 04:36:25,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:25,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 932 transitions. [2023-08-04 04:36:25,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 233.0) internal successors, (932), 4 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:25,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:25,620 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:25,620 INFO L175 Difference]: Start difference. First operand has 102 places, 110 transitions, 781 flow. Second operand 4 states and 932 transitions. [2023-08-04 04:36:25,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 149 transitions, 1191 flow [2023-08-04 04:36:25,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 149 transitions, 1174 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 04:36:25,655 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 593 flow [2023-08-04 04:36:25,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=593, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2023-08-04 04:36:25,656 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2023-08-04 04:36:25,656 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 593 flow [2023-08-04 04:36:25,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.4) internal successors, (1077), 5 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:25,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:25,656 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:25,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 04:36:25,656 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:25,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:25,657 INFO L85 PathProgramCache]: Analyzing trace with hash -837108158, now seen corresponding path program 1 times [2023-08-04 04:36:25,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:25,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851177371] [2023-08-04 04:36:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:25,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:36:25,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851177371] [2023-08-04 04:36:25,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851177371] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:25,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:25,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:36:25,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454290263] [2023-08-04 04:36:25,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:25,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:36:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:25,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:36:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:36:25,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 518 [2023-08-04 04:36:25,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 593 flow. Second operand has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:25,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:25,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 518 [2023-08-04 04:36:25,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:26,545 INFO L124 PetriNetUnfolderBase]: 2181/4559 cut-off events. [2023-08-04 04:36:26,545 INFO L125 PetriNetUnfolderBase]: For 5535/5551 co-relation queries the response was YES. [2023-08-04 04:36:26,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15102 conditions, 4559 events. 2181/4559 cut-off events. For 5535/5551 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 32561 event pairs, 989 based on Foata normal form. 18/4255 useless extension candidates. Maximal degree in co-relation 11753. Up to 2465 conditions per place. [2023-08-04 04:36:26,573 INFO L140 encePairwiseOnDemand]: 513/518 looper letters, 136 selfloop transitions, 19 changer transitions 10/175 dead transitions. [2023-08-04 04:36:26,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 175 transitions, 1306 flow [2023-08-04 04:36:26,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:36:26,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:36:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1211 transitions. [2023-08-04 04:36:26,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2023-08-04 04:36:26,576 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1211 transitions. [2023-08-04 04:36:26,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1211 transitions. [2023-08-04 04:36:26,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:26,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1211 transitions. [2023-08-04 04:36:26,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 242.2) internal successors, (1211), 5 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:26,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 518.0) internal successors, (3108), 6 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:26,582 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 518.0) internal successors, (3108), 6 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:26,582 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 593 flow. Second operand 5 states and 1211 transitions. [2023-08-04 04:36:26,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 175 transitions, 1306 flow [2023-08-04 04:36:26,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 175 transitions, 1302 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:36:26,603 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 648 flow [2023-08-04 04:36:26,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=648, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2023-08-04 04:36:26,603 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2023-08-04 04:36:26,603 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 648 flow [2023-08-04 04:36:26,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:26,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:26,604 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:26,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 04:36:26,604 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:26,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:26,604 INFO L85 PathProgramCache]: Analyzing trace with hash 522225435, now seen corresponding path program 1 times [2023-08-04 04:36:26,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:26,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892806009] [2023-08-04 04:36:26,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:26,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:36:26,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:26,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892806009] [2023-08-04 04:36:26,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892806009] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:26,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:26,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:36:26,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51299995] [2023-08-04 04:36:26,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:26,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:36:26,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:26,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:36:26,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:36:26,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 518 [2023-08-04 04:36:26,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 648 flow. Second operand has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:26,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:26,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 518 [2023-08-04 04:36:26,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:27,309 INFO L124 PetriNetUnfolderBase]: 2190/4610 cut-off events. [2023-08-04 04:36:27,309 INFO L125 PetriNetUnfolderBase]: For 6613/6639 co-relation queries the response was YES. [2023-08-04 04:36:27,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15669 conditions, 4610 events. 2190/4610 cut-off events. For 6613/6639 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 33302 event pairs, 952 based on Foata normal form. 29/4319 useless extension candidates. Maximal degree in co-relation 12698. Up to 2463 conditions per place. [2023-08-04 04:36:27,330 INFO L140 encePairwiseOnDemand]: 513/518 looper letters, 133 selfloop transitions, 21 changer transitions 11/176 dead transitions. [2023-08-04 04:36:27,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 176 transitions, 1359 flow [2023-08-04 04:36:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:36:27,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:36:27,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1210 transitions. [2023-08-04 04:36:27,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671814671814672 [2023-08-04 04:36:27,332 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1210 transitions. [2023-08-04 04:36:27,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1210 transitions. [2023-08-04 04:36:27,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:27,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1210 transitions. [2023-08-04 04:36:27,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:27,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 518.0) internal successors, (3108), 6 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:27,337 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 518.0) internal successors, (3108), 6 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:27,337 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 648 flow. Second operand 5 states and 1210 transitions. [2023-08-04 04:36:27,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 176 transitions, 1359 flow [2023-08-04 04:36:27,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 176 transitions, 1328 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 04:36:27,365 INFO L231 Difference]: Finished difference. Result has 110 places, 97 transitions, 690 flow [2023-08-04 04:36:27,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=690, PETRI_PLACES=110, PETRI_TRANSITIONS=97} [2023-08-04 04:36:27,365 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 57 predicate places. [2023-08-04 04:36:27,365 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 97 transitions, 690 flow [2023-08-04 04:36:27,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:27,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:27,366 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:27,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-04 04:36:27,366 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:27,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1302066899, now seen corresponding path program 1 times [2023-08-04 04:36:27,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:27,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369453970] [2023-08-04 04:36:27,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:27,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:36:27,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:27,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369453970] [2023-08-04 04:36:27,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369453970] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:27,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:27,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:36:27,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539970834] [2023-08-04 04:36:27,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:27,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:36:27,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:27,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:36:27,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:36:27,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 518 [2023-08-04 04:36:27,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 97 transitions, 690 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:27,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:27,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 518 [2023-08-04 04:36:27,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:28,112 INFO L124 PetriNetUnfolderBase]: 2223/4783 cut-off events. [2023-08-04 04:36:28,112 INFO L125 PetriNetUnfolderBase]: For 9190/9232 co-relation queries the response was YES. [2023-08-04 04:36:28,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16918 conditions, 4783 events. 2223/4783 cut-off events. For 9190/9232 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 36075 event pairs, 996 based on Foata normal form. 110/4581 useless extension candidates. Maximal degree in co-relation 16098. Up to 3242 conditions per place. [2023-08-04 04:36:28,135 INFO L140 encePairwiseOnDemand]: 508/518 looper letters, 135 selfloop transitions, 16 changer transitions 3/168 dead transitions. [2023-08-04 04:36:28,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 168 transitions, 1525 flow [2023-08-04 04:36:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:36:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:36:28,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 936 transitions. [2023-08-04 04:36:28,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517374517374517 [2023-08-04 04:36:28,137 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 936 transitions. [2023-08-04 04:36:28,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 936 transitions. [2023-08-04 04:36:28,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:28,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 936 transitions. [2023-08-04 04:36:28,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:28,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:28,142 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:28,142 INFO L175 Difference]: Start difference. First operand has 110 places, 97 transitions, 690 flow. Second operand 4 states and 936 transitions. [2023-08-04 04:36:28,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 168 transitions, 1525 flow [2023-08-04 04:36:28,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 168 transitions, 1473 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 04:36:28,183 INFO L231 Difference]: Finished difference. Result has 112 places, 108 transitions, 781 flow [2023-08-04 04:36:28,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=781, PETRI_PLACES=112, PETRI_TRANSITIONS=108} [2023-08-04 04:36:28,183 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2023-08-04 04:36:28,183 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 108 transitions, 781 flow [2023-08-04 04:36:28,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:28,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:28,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:28,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-04 04:36:28,184 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:28,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:28,185 INFO L85 PathProgramCache]: Analyzing trace with hash 121172756, now seen corresponding path program 1 times [2023-08-04 04:36:28,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:28,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861376647] [2023-08-04 04:36:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:28,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:36:28,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:28,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861376647] [2023-08-04 04:36:28,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861376647] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:28,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:28,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:36:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479709899] [2023-08-04 04:36:28,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:28,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:36:28,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:28,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:36:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:36:28,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 518 [2023-08-04 04:36:28,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 108 transitions, 781 flow. Second operand has 5 states, 5 states have (on average 223.2) internal successors, (1116), 5 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:28,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:28,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 518 [2023-08-04 04:36:28,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:28,923 INFO L124 PetriNetUnfolderBase]: 2244/4843 cut-off events. [2023-08-04 04:36:28,923 INFO L125 PetriNetUnfolderBase]: For 9757/9790 co-relation queries the response was YES. [2023-08-04 04:36:28,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18899 conditions, 4843 events. 2244/4843 cut-off events. For 9757/9790 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 36306 event pairs, 557 based on Foata normal form. 70/4613 useless extension candidates. Maximal degree in co-relation 18272. Up to 1369 conditions per place. [2023-08-04 04:36:28,943 INFO L140 encePairwiseOnDemand]: 512/518 looper letters, 195 selfloop transitions, 20 changer transitions 23/250 dead transitions. [2023-08-04 04:36:28,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 250 transitions, 2078 flow [2023-08-04 04:36:28,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 04:36:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 04:36:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1912 transitions. [2023-08-04 04:36:28,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4613899613899614 [2023-08-04 04:36:28,947 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1912 transitions. [2023-08-04 04:36:28,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1912 transitions. [2023-08-04 04:36:28,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:28,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1912 transitions. [2023-08-04 04:36:28,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:28,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 518.0) internal successors, (4662), 9 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:28,953 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 518.0) internal successors, (4662), 9 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:28,953 INFO L175 Difference]: Start difference. First operand has 112 places, 108 transitions, 781 flow. Second operand 8 states and 1912 transitions. [2023-08-04 04:36:28,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 250 transitions, 2078 flow [2023-08-04 04:36:28,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 250 transitions, 2077 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:36:29,000 INFO L231 Difference]: Finished difference. Result has 120 places, 109 transitions, 835 flow [2023-08-04 04:36:29,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=835, PETRI_PLACES=120, PETRI_TRANSITIONS=109} [2023-08-04 04:36:29,001 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 67 predicate places. [2023-08-04 04:36:29,001 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 109 transitions, 835 flow [2023-08-04 04:36:29,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.2) internal successors, (1116), 5 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:29,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:29,001 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:29,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-04 04:36:29,002 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:29,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:29,002 INFO L85 PathProgramCache]: Analyzing trace with hash -601739165, now seen corresponding path program 1 times [2023-08-04 04:36:29,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:29,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549843962] [2023-08-04 04:36:29,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:29,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:36:29,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:29,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549843962] [2023-08-04 04:36:29,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549843962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:29,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:29,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:36:29,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882009781] [2023-08-04 04:36:29,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:29,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:36:29,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:29,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:36:29,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:36:29,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 518 [2023-08-04 04:36:29,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 109 transitions, 835 flow. Second operand has 5 states, 5 states have (on average 223.2) internal successors, (1116), 5 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:29,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:29,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 518 [2023-08-04 04:36:29,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:29,844 INFO L124 PetriNetUnfolderBase]: 2234/4888 cut-off events. [2023-08-04 04:36:29,844 INFO L125 PetriNetUnfolderBase]: For 11825/11881 co-relation queries the response was YES. [2023-08-04 04:36:29,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19414 conditions, 4888 events. 2234/4888 cut-off events. For 11825/11881 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 37041 event pairs, 650 based on Foata normal form. 96/4685 useless extension candidates. Maximal degree in co-relation 18907. Up to 1399 conditions per place. [2023-08-04 04:36:29,868 INFO L140 encePairwiseOnDemand]: 512/518 looper letters, 192 selfloop transitions, 20 changer transitions 27/252 dead transitions. [2023-08-04 04:36:29,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 252 transitions, 2157 flow [2023-08-04 04:36:29,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 04:36:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 04:36:29,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1911 transitions. [2023-08-04 04:36:29,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46114864864864863 [2023-08-04 04:36:29,872 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1911 transitions. [2023-08-04 04:36:29,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1911 transitions. [2023-08-04 04:36:29,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:29,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1911 transitions. [2023-08-04 04:36:29,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.875) internal successors, (1911), 8 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:29,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 518.0) internal successors, (4662), 9 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:29,878 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 518.0) internal successors, (4662), 9 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:29,878 INFO L175 Difference]: Start difference. First operand has 120 places, 109 transitions, 835 flow. Second operand 8 states and 1911 transitions. [2023-08-04 04:36:29,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 252 transitions, 2157 flow [2023-08-04 04:36:29,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 252 transitions, 2118 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-04 04:36:29,926 INFO L231 Difference]: Finished difference. Result has 124 places, 110 transitions, 851 flow [2023-08-04 04:36:29,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=851, PETRI_PLACES=124, PETRI_TRANSITIONS=110} [2023-08-04 04:36:29,926 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 71 predicate places. [2023-08-04 04:36:29,927 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 110 transitions, 851 flow [2023-08-04 04:36:29,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.2) internal successors, (1116), 5 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:29,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:29,927 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:29,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-04 04:36:29,927 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:29,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:29,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2084234391, now seen corresponding path program 1 times [2023-08-04 04:36:29,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:29,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296615755] [2023-08-04 04:36:29,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:29,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:36:30,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:30,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296615755] [2023-08-04 04:36:30,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296615755] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:30,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:30,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-04 04:36:30,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117433751] [2023-08-04 04:36:30,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:30,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-04 04:36:30,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:30,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-04 04:36:30,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-04 04:36:30,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 518 [2023-08-04 04:36:30,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 110 transitions, 851 flow. Second operand has 7 states, 7 states have (on average 217.57142857142858) internal successors, (1523), 7 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:30,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:30,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 518 [2023-08-04 04:36:30,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:31,151 INFO L124 PetriNetUnfolderBase]: 2177/4778 cut-off events. [2023-08-04 04:36:31,151 INFO L125 PetriNetUnfolderBase]: For 12019/12063 co-relation queries the response was YES. [2023-08-04 04:36:31,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19057 conditions, 4778 events. 2177/4778 cut-off events. For 12019/12063 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 36087 event pairs, 489 based on Foata normal form. 112/4604 useless extension candidates. Maximal degree in co-relation 18571. Up to 1379 conditions per place. [2023-08-04 04:36:31,172 INFO L140 encePairwiseOnDemand]: 507/518 looper letters, 253 selfloop transitions, 47 changer transitions 48/361 dead transitions. [2023-08-04 04:36:31,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 361 transitions, 2981 flow [2023-08-04 04:36:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-04 04:36:31,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-04 04:36:31,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4541 transitions. [2023-08-04 04:36:31,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383204633204633 [2023-08-04 04:36:31,175 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4541 transitions. [2023-08-04 04:36:31,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4541 transitions. [2023-08-04 04:36:31,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:31,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4541 transitions. [2023-08-04 04:36:31,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 227.05) internal successors, (4541), 20 states have internal predecessors, (4541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:31,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 518.0) internal successors, (10878), 21 states have internal predecessors, (10878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:31,191 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 518.0) internal successors, (10878), 21 states have internal predecessors, (10878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:31,191 INFO L175 Difference]: Start difference. First operand has 124 places, 110 transitions, 851 flow. Second operand 20 states and 4541 transitions. [2023-08-04 04:36:31,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 361 transitions, 2981 flow [2023-08-04 04:36:31,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 361 transitions, 2936 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-04 04:36:31,241 INFO L231 Difference]: Finished difference. Result has 141 places, 124 transitions, 1045 flow [2023-08-04 04:36:31,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1045, PETRI_PLACES=141, PETRI_TRANSITIONS=124} [2023-08-04 04:36:31,241 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 88 predicate places. [2023-08-04 04:36:31,241 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 124 transitions, 1045 flow [2023-08-04 04:36:31,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.57142857142858) internal successors, (1523), 7 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:31,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:31,242 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:31,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-04 04:36:31,242 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:31,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:31,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2058252675, now seen corresponding path program 1 times [2023-08-04 04:36:31,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:31,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605403691] [2023-08-04 04:36:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:31,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:36:31,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:31,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605403691] [2023-08-04 04:36:31,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605403691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:31,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:31,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-04 04:36:31,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233316389] [2023-08-04 04:36:31,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:31,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:36:31,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:31,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:36:31,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:36:31,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 518 [2023-08-04 04:36:31,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 124 transitions, 1045 flow. Second operand has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:31,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:31,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 518 [2023-08-04 04:36:31,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:32,243 INFO L124 PetriNetUnfolderBase]: 2059/4530 cut-off events. [2023-08-04 04:36:32,243 INFO L125 PetriNetUnfolderBase]: For 12886/12961 co-relation queries the response was YES. [2023-08-04 04:36:32,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18750 conditions, 4530 events. 2059/4530 cut-off events. For 12886/12961 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 33737 event pairs, 554 based on Foata normal form. 130/4380 useless extension candidates. Maximal degree in co-relation 18196. Up to 1274 conditions per place. [2023-08-04 04:36:32,266 INFO L140 encePairwiseOnDemand]: 510/518 looper letters, 234 selfloop transitions, 33 changer transitions 39/319 dead transitions. [2023-08-04 04:36:32,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 319 transitions, 2888 flow [2023-08-04 04:36:32,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-04 04:36:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-04 04:36:32,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3028 transitions. [2023-08-04 04:36:32,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44965844965844964 [2023-08-04 04:36:32,269 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3028 transitions. [2023-08-04 04:36:32,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3028 transitions. [2023-08-04 04:36:32,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:32,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3028 transitions. [2023-08-04 04:36:32,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 232.92307692307693) internal successors, (3028), 13 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:32,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 518.0) internal successors, (7252), 14 states have internal predecessors, (7252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:32,276 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 518.0) internal successors, (7252), 14 states have internal predecessors, (7252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:32,276 INFO L175 Difference]: Start difference. First operand has 141 places, 124 transitions, 1045 flow. Second operand 13 states and 3028 transitions. [2023-08-04 04:36:32,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 319 transitions, 2888 flow [2023-08-04 04:36:32,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 319 transitions, 2819 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-08-04 04:36:32,326 INFO L231 Difference]: Finished difference. Result has 147 places, 130 transitions, 1130 flow [2023-08-04 04:36:32,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1130, PETRI_PLACES=147, PETRI_TRANSITIONS=130} [2023-08-04 04:36:32,327 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 94 predicate places. [2023-08-04 04:36:32,327 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 130 transitions, 1130 flow [2023-08-04 04:36:32,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:32,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:32,327 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:32,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-04 04:36:32,327 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:32,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:32,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1967799265, now seen corresponding path program 1 times [2023-08-04 04:36:32,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:32,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514250866] [2023-08-04 04:36:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:32,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:36:32,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:32,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514250866] [2023-08-04 04:36:32,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514250866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:32,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:32,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:36:32,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185453936] [2023-08-04 04:36:32,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:32,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:36:32,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:32,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:36:32,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:36:32,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 518 [2023-08-04 04:36:32,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 130 transitions, 1130 flow. Second operand has 4 states, 4 states have (on average 223.25) internal successors, (893), 4 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:32,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:32,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 518 [2023-08-04 04:36:32,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:33,117 INFO L124 PetriNetUnfolderBase]: 2765/6041 cut-off events. [2023-08-04 04:36:33,117 INFO L125 PetriNetUnfolderBase]: For 17741/17929 co-relation queries the response was YES. [2023-08-04 04:36:33,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25324 conditions, 6041 events. 2765/6041 cut-off events. For 17741/17929 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 48098 event pairs, 926 based on Foata normal form. 217/6012 useless extension candidates. Maximal degree in co-relation 24662. Up to 3860 conditions per place. [2023-08-04 04:36:33,151 INFO L140 encePairwiseOnDemand]: 508/518 looper letters, 159 selfloop transitions, 34 changer transitions 4/221 dead transitions. [2023-08-04 04:36:33,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 221 transitions, 2295 flow [2023-08-04 04:36:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:36:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:36:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 952 transitions. [2023-08-04 04:36:33,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2023-08-04 04:36:33,153 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 952 transitions. [2023-08-04 04:36:33,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 952 transitions. [2023-08-04 04:36:33,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:33,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 952 transitions. [2023-08-04 04:36:33,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:33,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:33,155 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:33,155 INFO L175 Difference]: Start difference. First operand has 147 places, 130 transitions, 1130 flow. Second operand 4 states and 952 transitions. [2023-08-04 04:36:33,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 221 transitions, 2295 flow [2023-08-04 04:36:33,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 221 transitions, 2231 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-04 04:36:33,205 INFO L231 Difference]: Finished difference. Result has 144 places, 158 transitions, 1488 flow [2023-08-04 04:36:33,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1488, PETRI_PLACES=144, PETRI_TRANSITIONS=158} [2023-08-04 04:36:33,205 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 91 predicate places. [2023-08-04 04:36:33,206 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 158 transitions, 1488 flow [2023-08-04 04:36:33,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 223.25) internal successors, (893), 4 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:33,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:33,206 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:33,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-04 04:36:33,206 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:33,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:33,207 INFO L85 PathProgramCache]: Analyzing trace with hash -242369651, now seen corresponding path program 2 times [2023-08-04 04:36:33,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:33,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035532208] [2023-08-04 04:36:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:33,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:33,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:36:33,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:33,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035532208] [2023-08-04 04:36:33,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035532208] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:33,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:33,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:36:33,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986854984] [2023-08-04 04:36:33,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:33,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:36:33,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:33,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:36:33,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:36:33,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 518 [2023-08-04 04:36:33,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 158 transitions, 1488 flow. Second operand has 5 states, 5 states have (on average 217.2) internal successors, (1086), 5 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:33,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:33,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 518 [2023-08-04 04:36:33,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:33,809 INFO L124 PetriNetUnfolderBase]: 796/2084 cut-off events. [2023-08-04 04:36:33,809 INFO L125 PetriNetUnfolderBase]: For 7404/7443 co-relation queries the response was YES. [2023-08-04 04:36:33,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9141 conditions, 2084 events. 796/2084 cut-off events. For 7404/7443 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 14378 event pairs, 353 based on Foata normal form. 224/2290 useless extension candidates. Maximal degree in co-relation 8754. Up to 1501 conditions per place. [2023-08-04 04:36:33,818 INFO L140 encePairwiseOnDemand]: 511/518 looper letters, 95 selfloop transitions, 10 changer transitions 30/156 dead transitions. [2023-08-04 04:36:33,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 156 transitions, 1684 flow [2023-08-04 04:36:33,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:36:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:36:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 910 transitions. [2023-08-04 04:36:33,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391891891891892 [2023-08-04 04:36:33,820 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 910 transitions. [2023-08-04 04:36:33,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 910 transitions. [2023-08-04 04:36:33,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:33,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 910 transitions. [2023-08-04 04:36:33,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.5) internal successors, (910), 4 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:33,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:33,822 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:33,822 INFO L175 Difference]: Start difference. First operand has 144 places, 158 transitions, 1488 flow. Second operand 4 states and 910 transitions. [2023-08-04 04:36:33,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 156 transitions, 1684 flow [2023-08-04 04:36:33,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 156 transitions, 1675 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-04 04:36:33,840 INFO L231 Difference]: Finished difference. Result has 146 places, 106 transitions, 953 flow [2023-08-04 04:36:33,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=953, PETRI_PLACES=146, PETRI_TRANSITIONS=106} [2023-08-04 04:36:33,841 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2023-08-04 04:36:33,841 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 106 transitions, 953 flow [2023-08-04 04:36:33,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.2) internal successors, (1086), 5 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:33,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:33,841 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:33,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-04 04:36:33,841 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:33,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash 952018941, now seen corresponding path program 3 times [2023-08-04 04:36:33,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:33,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387709126] [2023-08-04 04:36:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:33,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:36:33,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:33,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387709126] [2023-08-04 04:36:33,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387709126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:33,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:33,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:36:33,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421739469] [2023-08-04 04:36:33,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:33,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:36:33,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:33,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:36:33,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:36:34,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 518 [2023-08-04 04:36:34,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 106 transitions, 953 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:34,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:34,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 518 [2023-08-04 04:36:34,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:34,179 INFO L124 PetriNetUnfolderBase]: 270/859 cut-off events. [2023-08-04 04:36:34,179 INFO L125 PetriNetUnfolderBase]: For 2759/2775 co-relation queries the response was YES. [2023-08-04 04:36:34,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3749 conditions, 859 events. 270/859 cut-off events. For 2759/2775 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4917 event pairs, 136 based on Foata normal form. 16/871 useless extension candidates. Maximal degree in co-relation 3683. Up to 423 conditions per place. [2023-08-04 04:36:34,185 INFO L140 encePairwiseOnDemand]: 508/518 looper letters, 61 selfloop transitions, 17 changer transitions 7/98 dead transitions. [2023-08-04 04:36:34,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 98 transitions, 947 flow [2023-08-04 04:36:34,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:36:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:36:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 907 transitions. [2023-08-04 04:36:34,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377413127413127 [2023-08-04 04:36:34,187 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 907 transitions. [2023-08-04 04:36:34,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 907 transitions. [2023-08-04 04:36:34,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:34,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 907 transitions. [2023-08-04 04:36:34,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 226.75) internal successors, (907), 4 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:34,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:34,190 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:34,190 INFO L175 Difference]: Start difference. First operand has 146 places, 106 transitions, 953 flow. Second operand 4 states and 907 transitions. [2023-08-04 04:36:34,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 98 transitions, 947 flow [2023-08-04 04:36:34,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 98 transitions, 812 flow, removed 16 selfloop flow, removed 25 redundant places. [2023-08-04 04:36:34,200 INFO L231 Difference]: Finished difference. Result has 113 places, 80 transitions, 586 flow [2023-08-04 04:36:34,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=586, PETRI_PLACES=113, PETRI_TRANSITIONS=80} [2023-08-04 04:36:34,201 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 60 predicate places. [2023-08-04 04:36:34,201 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 80 transitions, 586 flow [2023-08-04 04:36:34,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:34,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:34,202 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:34,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-04 04:36:34,202 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:34,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash 555699356, now seen corresponding path program 1 times [2023-08-04 04:36:34,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:34,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744630489] [2023-08-04 04:36:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:34,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:36:34,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:34,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744630489] [2023-08-04 04:36:34,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744630489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:34,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:34,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:36:34,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622615912] [2023-08-04 04:36:34,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:34,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:36:34,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:34,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:36:34,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:36:34,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 518 [2023-08-04 04:36:34,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 80 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:34,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:34,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 518 [2023-08-04 04:36:34,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:34,530 INFO L124 PetriNetUnfolderBase]: 246/705 cut-off events. [2023-08-04 04:36:34,530 INFO L125 PetriNetUnfolderBase]: For 1565/1565 co-relation queries the response was YES. [2023-08-04 04:36:34,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2900 conditions, 705 events. 246/705 cut-off events. For 1565/1565 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3645 event pairs, 149 based on Foata normal form. 10/713 useless extension candidates. Maximal degree in co-relation 2679. Up to 444 conditions per place. [2023-08-04 04:36:34,533 INFO L140 encePairwiseOnDemand]: 514/518 looper letters, 58 selfloop transitions, 3 changer transitions 41/105 dead transitions. [2023-08-04 04:36:34,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 105 transitions, 928 flow [2023-08-04 04:36:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:36:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:36:34,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 939 transitions. [2023-08-04 04:36:34,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4531853281853282 [2023-08-04 04:36:34,535 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 939 transitions. [2023-08-04 04:36:34,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 939 transitions. [2023-08-04 04:36:34,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:34,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 939 transitions. [2023-08-04 04:36:34,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 234.75) internal successors, (939), 4 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:34,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:34,538 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:34,538 INFO L175 Difference]: Start difference. First operand has 113 places, 80 transitions, 586 flow. Second operand 4 states and 939 transitions. [2023-08-04 04:36:34,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 105 transitions, 928 flow [2023-08-04 04:36:34,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 105 transitions, 915 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-04 04:36:34,545 INFO L231 Difference]: Finished difference. Result has 112 places, 45 transitions, 306 flow [2023-08-04 04:36:34,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=112, PETRI_TRANSITIONS=45} [2023-08-04 04:36:34,546 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2023-08-04 04:36:34,546 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 45 transitions, 306 flow [2023-08-04 04:36:34,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:34,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:34,546 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:34,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-04 04:36:34,547 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-04 04:36:34,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1102170157, now seen corresponding path program 1 times [2023-08-04 04:36:34,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:34,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246136302] [2023-08-04 04:36:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:34,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:36:34,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:34,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246136302] [2023-08-04 04:36:34,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246136302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:34,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:36:34,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-04 04:36:34,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588987151] [2023-08-04 04:36:34,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:34,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:36:34,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:34,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:36:34,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:36:34,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 518 [2023-08-04 04:36:34,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 45 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:34,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:34,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 518 [2023-08-04 04:36:34,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:35,001 INFO L124 PetriNetUnfolderBase]: 76/225 cut-off events. [2023-08-04 04:36:35,001 INFO L125 PetriNetUnfolderBase]: For 651/651 co-relation queries the response was YES. [2023-08-04 04:36:35,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 225 events. 76/225 cut-off events. For 651/651 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 886 event pairs, 53 based on Foata normal form. 4/228 useless extension candidates. Maximal degree in co-relation 958. Up to 114 conditions per place. [2023-08-04 04:36:35,002 INFO L140 encePairwiseOnDemand]: 512/518 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2023-08-04 04:36:35,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 59 transitions, 488 flow [2023-08-04 04:36:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:36:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:36:35,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 897 transitions. [2023-08-04 04:36:35,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329150579150579 [2023-08-04 04:36:35,003 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 897 transitions. [2023-08-04 04:36:35,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 897 transitions. [2023-08-04 04:36:35,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:35,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 897 transitions. [2023-08-04 04:36:35,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.25) internal successors, (897), 4 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:35,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:35,005 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 518.0) internal successors, (2590), 5 states have internal predecessors, (2590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:35,005 INFO L175 Difference]: Start difference. First operand has 112 places, 45 transitions, 306 flow. Second operand 4 states and 897 transitions. [2023-08-04 04:36:35,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 59 transitions, 488 flow [2023-08-04 04:36:35,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 59 transitions, 387 flow, removed 9 selfloop flow, removed 21 redundant places. [2023-08-04 04:36:35,007 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2023-08-04 04:36:35,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=518, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2023-08-04 04:36:35,007 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2023-08-04 04:36:35,007 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2023-08-04 04:36:35,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:35,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-08-04 04:36:35,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-08-04 04:36:35,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-08-04 04:36:35,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-08-04 04:36:35,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2023-08-04 04:36:35,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-08-04 04:36:35,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-08-04 04:36:35,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-08-04 04:36:35,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-08-04 04:36:35,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-04 04:36:35,009 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:36:35,009 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:36:35,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 250 transitions, 512 flow [2023-08-04 04:36:35,048 INFO L124 PetriNetUnfolderBase]: 22/353 cut-off events. [2023-08-04 04:36:35,049 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:36:35,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 353 events. 22/353 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 995 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 223. Up to 6 conditions per place. [2023-08-04 04:36:35,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 250 transitions, 512 flow [2023-08-04 04:36:35,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 249 transitions, 510 flow [2023-08-04 04:36:35,053 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:36:35,053 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 249 transitions, 510 flow [2023-08-04 04:36:35,053 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 249 transitions, 510 flow [2023-08-04 04:36:35,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 249 transitions, 510 flow [2023-08-04 04:36:35,088 INFO L124 PetriNetUnfolderBase]: 21/352 cut-off events. [2023-08-04 04:36:35,088 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:36:35,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 352 events. 21/352 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1011 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 222. Up to 6 conditions per place. [2023-08-04 04:36:35,100 INFO L119 LiptonReduction]: Number of co-enabled transitions 28424 [2023-08-04 04:36:39,957 INFO L134 LiptonReduction]: Checked pairs total: 41436 [2023-08-04 04:36:39,958 INFO L136 LiptonReduction]: Total number of compositions: 271 [2023-08-04 04:36:39,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:36:39,959 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;@463c8773, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:36:39,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:36:39,964 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:36:39,964 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-08-04 04:36:39,964 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:36:39,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:36:39,964 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 04:36:39,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:36:39,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:36:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash -686115502, now seen corresponding path program 1 times [2023-08-04 04:36:39,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:36:39,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346186091] [2023-08-04 04:36:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:39,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:36:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:40,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:36:40,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346186091] [2023-08-04 04:36:40,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346186091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:36:40,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687177177] [2023-08-04 04:36:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:36:40,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:36:40,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:36:40,005 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:36:40,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:36:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:36:40,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:36:40,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:36:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:36:40,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:36:40,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687177177] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:36:40,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:36:40,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 04:36:40,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308388809] [2023-08-04 04:36:40,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:36:40,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:36:40,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:36:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:36:40,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:36:40,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 521 [2023-08-04 04:36:40,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 225.6) internal successors, (1128), 5 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:40,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:36:40,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 521 [2023-08-04 04:36:40,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:36:40,560 INFO L124 PetriNetUnfolderBase]: 3355/6141 cut-off events. [2023-08-04 04:36:40,560 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-04 04:36:40,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11384 conditions, 6141 events. 3355/6141 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 43111 event pairs, 0 based on Foata normal form. 0/5041 useless extension candidates. Maximal degree in co-relation 1082. Up to 4779 conditions per place. [2023-08-04 04:36:40,566 INFO L140 encePairwiseOnDemand]: 516/521 looper letters, 0 selfloop transitions, 0 changer transitions 90/90 dead transitions. [2023-08-04 04:36:40,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 90 transitions, 352 flow [2023-08-04 04:36:40,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:36:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:36:40,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1206 transitions. [2023-08-04 04:36:40,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46295585412667944 [2023-08-04 04:36:40,568 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1206 transitions. [2023-08-04 04:36:40,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1206 transitions. [2023-08-04 04:36:40,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:36:40,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1206 transitions. [2023-08-04 04:36:40,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 241.2) internal successors, (1206), 5 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:40,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 521.0) internal successors, (3126), 6 states have internal predecessors, (3126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:40,571 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 521.0) internal successors, (3126), 6 states have internal predecessors, (3126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:40,571 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 112 flow. Second operand 5 states and 1206 transitions. [2023-08-04 04:36:40,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 90 transitions, 352 flow [2023-08-04 04:36:40,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 90 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:36:40,572 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-04 04:36:40,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-08-04 04:36:40,573 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-08-04 04:36:40,573 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-04 04:36:40,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 225.6) internal successors, (1128), 5 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:36:40,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:36:40,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 04:36:40,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:36:40,777 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:36:40,778 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:36:40,778 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:36:40,778 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:36:40,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:36:40 BasicIcfg [2023-08-04 04:36:40,782 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:36:40,783 INFO L158 Benchmark]: Toolchain (without parser) took 45571.68ms. Allocated memory was 335.5MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 285.4MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-04 04:36:40,783 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 335.5MB. Free memory is still 292.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:36:40,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.50ms. Allocated memory is still 335.5MB. Free memory was 285.4MB in the beginning and 265.1MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 04:36:40,783 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.11ms. Allocated memory is still 335.5MB. Free memory was 265.1MB in the beginning and 262.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:36:40,783 INFO L158 Benchmark]: Boogie Preprocessor took 40.40ms. Allocated memory is still 335.5MB. Free memory was 262.6MB in the beginning and 261.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:36:40,784 INFO L158 Benchmark]: RCFGBuilder took 397.40ms. Allocated memory was 335.5MB in the beginning and 436.2MB in the end (delta: 100.7MB). Free memory was 261.0MB in the beginning and 404.3MB in the end (delta: -143.3MB). Peak memory consumption was 21.3MB. Max. memory is 16.0GB. [2023-08-04 04:36:40,784 INFO L158 Benchmark]: TraceAbstraction took 44599.59ms. Allocated memory was 436.2MB in the beginning and 2.1GB in the end (delta: 1.7GB). Free memory was 403.3MB in the beginning and 1.5GB in the end (delta: -1.1GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-04 04:36:40,785 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 335.5MB. Free memory is still 292.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 487.50ms. Allocated memory is still 335.5MB. Free memory was 285.4MB in the beginning and 265.1MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.11ms. Allocated memory is still 335.5MB. Free memory was 265.1MB in the beginning and 262.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 40.40ms. Allocated memory is still 335.5MB. Free memory was 262.6MB in the beginning and 261.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 397.40ms. Allocated memory was 335.5MB in the beginning and 436.2MB in the end (delta: 100.7MB). Free memory was 261.0MB in the beginning and 404.3MB in the end (delta: -143.3MB). Peak memory consumption was 21.3MB. Max. memory is 16.0GB. * TraceAbstraction took 44599.59ms. Allocated memory was 436.2MB in the beginning and 2.1GB in the end (delta: 1.7GB). Free memory was 403.3MB in the beginning and 1.5GB in the end (delta: -1.1GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 236]: Unsoundness Warning unspecified type, defaulting to int C: short [236] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7s, 166 PlacesBefore, 35 PlacesAfterwards, 172 TransitionsBefore, 34 TransitionsAfterwards, 8360 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 102 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 28 ConcurrentYvCompositions, 7 ChoiceCompositions, 176 TotalNumberOfCompositions, 12840 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7846, independent: 7597, independent conditional: 0, independent unconditional: 7597, dependent: 249, dependent conditional: 0, dependent unconditional: 249, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4616, independent: 4565, independent conditional: 0, independent unconditional: 4565, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7846, independent: 3032, independent conditional: 0, independent unconditional: 3032, dependent: 198, dependent conditional: 0, dependent unconditional: 198, unknown: 4616, unknown conditional: 0, unknown unconditional: 4616] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 166 PlacesBefore, 35 PlacesAfterwards, 172 TransitionsBefore, 34 TransitionsAfterwards, 8360 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 107 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 25 ConcurrentYvCompositions, 7 ChoiceCompositions, 178 TotalNumberOfCompositions, 13548 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8269, independent: 7980, independent conditional: 0, independent unconditional: 7980, dependent: 289, dependent conditional: 0, dependent unconditional: 289, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4734, independent: 4662, independent conditional: 0, independent unconditional: 4662, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8269, independent: 3318, independent conditional: 0, independent unconditional: 3318, dependent: 217, dependent conditional: 0, dependent unconditional: 217, unknown: 4734, unknown conditional: 0, unknown unconditional: 4734] , Statistics on independence cache: Total cache size (in pairs): 125, Positive cache size: 94, Positive conditional cache size: 0, Positive unconditional cache size: 94, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 239 PlacesBefore, 53 PlacesAfterwards, 249 TransitionsBefore, 52 TransitionsAfterwards, 28424 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 165 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 53 ConcurrentYvCompositions, 11 ChoiceCompositions, 268 TotalNumberOfCompositions, 41463 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26780, independent: 26432, independent conditional: 0, independent unconditional: 26432, dependent: 348, dependent conditional: 0, dependent unconditional: 348, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 16096, independent: 15990, independent conditional: 0, independent unconditional: 15990, dependent: 106, dependent conditional: 0, dependent unconditional: 106, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 26780, independent: 10442, independent conditional: 0, independent unconditional: 10442, dependent: 242, dependent conditional: 0, dependent unconditional: 242, unknown: 16096, unknown conditional: 0, unknown unconditional: 16096] , Statistics on independence cache: Total cache size (in pairs): 339, Positive cache size: 298, Positive conditional cache size: 0, Positive unconditional cache size: 298, Negative cache size: 41, Negative conditional cache size: 0, Negative unconditional cache size: 41, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 239 PlacesBefore, 52 PlacesAfterwards, 249 TransitionsBefore, 50 TransitionsAfterwards, 28424 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 168 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 52 ConcurrentYvCompositions, 12 ChoiceCompositions, 271 TotalNumberOfCompositions, 41436 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26389, independent: 26037, independent conditional: 0, independent unconditional: 26037, dependent: 352, dependent conditional: 0, dependent unconditional: 352, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 16123, independent: 16028, independent conditional: 0, independent unconditional: 16028, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 26389, independent: 10009, independent conditional: 0, independent unconditional: 10009, dependent: 257, dependent conditional: 0, dependent unconditional: 257, unknown: 16123, unknown conditional: 0, unknown unconditional: 16123] , Statistics on independence cache: Total cache size (in pairs): 288, Positive cache size: 252, Positive conditional cache size: 0, Positive unconditional cache size: 252, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 235 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 315 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 237 mSDsluCounter, 123 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 71 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 643 IncrementalHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 52 mSDtfsCounter, 643 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=3, InterpolantAutomatonStates: 26, 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, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 179 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 0/3 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, 306 locations, 10 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: 27.3s, OverallIterations: 20, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 19.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3673 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2984 mSDsluCounter, 683 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 509 mSDsCounter, 265 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6486 IncrementalHoareTripleChecker+Invalid, 6751 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 265 mSolverCounterUnsat, 174 mSDtfsCounter, 6486 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1488occurred in iteration=16, InterpolantAutomatonStates: 134, 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, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 401 NumberOfCodeBlocks, 401 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 392 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 179 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 22 InterpolantComputations, 19 PerfectInterpolantSequences, 84/87 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 235 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 306 locations, 10 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: 5.8s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 148 IncrementalHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 1 mSDtfsCounter, 148 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 04:36:40,807 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...