/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/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 [2023-08-03 22:10:30,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 22:10:30,661 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 22:10:30,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 22:10:30,666 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 22:10:30,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 22:10:30,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 22:10:30,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 22:10:30,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 22:10:30,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 22:10:30,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 22:10:30,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 22:10:30,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 22:10:30,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 22:10:30,705 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 22:10:30,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 22:10:30,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 22:10:30,706 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 22:10:30,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 22:10:30,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 22:10:30,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 22:10:30,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 22:10:30,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 22:10:30,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 22:10:30,708 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 22:10:30,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 22:10:30,709 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 22:10:30,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 22:10:30,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 22:10:30,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 22:10:30,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:10:30,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 22:10:30,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 22:10:30,711 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 22:10:30,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 22:10:30,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 22:10:30,711 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 22:10:30,712 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 22:10:30,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 22:10:30,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 22:10:30,712 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 22:10:30,712 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 22:10:30,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 22:10:30,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 22:10:30,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 22:10:30,960 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 22:10:30,960 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 22:10:30,961 INFO L431 ainManager$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 [2023-08-03 22:10:32,101 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 22:10:32,305 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 22:10:32,305 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 [2023-08-03 22:10:32,318 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c27b569/5f08a8e54fc94ce6afcd22d506f17912/FLAG7061a67e2 [2023-08-03 22:10:32,328 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c27b569/5f08a8e54fc94ce6afcd22d506f17912 [2023-08-03 22:10:32,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 22:10:32,331 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 22:10:32,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 22:10:32,332 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 22:10:32,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 22:10:32,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:10:32" (1/1) ... [2023-08-03 22:10:32,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2993e654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32, skipping insertion in model container [2023-08-03 22:10:32,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:10:32" (1/1) ... [2023-08-03 22:10:32,382 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 22:10:32,505 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] [2023-08-03 22:10:32,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:10:32,617 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 22:10:32,632 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] [2023-08-03 22:10:32,648 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [236] [2023-08-03 22:10:32,649 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-03 22:10:32,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:10:32,718 INFO L206 MainTranslator]: Completed translation [2023-08-03 22:10:32,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32 WrapperNode [2023-08-03 22:10:32,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 22:10:32,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 22:10:32,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 22:10:32,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 22:10:32,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32" (1/1) ... [2023-08-03 22:10:32,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32" (1/1) ... [2023-08-03 22:10:32,775 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 151 [2023-08-03 22:10:32,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 22:10:32,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 22:10:32,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 22:10:32,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 22:10:32,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32" (1/1) ... [2023-08-03 22:10:32,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32" (1/1) ... [2023-08-03 22:10:32,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32" (1/1) ... [2023-08-03 22:10:32,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32" (1/1) ... [2023-08-03 22:10:32,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32" (1/1) ... [2023-08-03 22:10:32,801 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32" (1/1) ... [2023-08-03 22:10:32,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32" (1/1) ... [2023-08-03 22:10:32,804 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32" (1/1) ... [2023-08-03 22:10:32,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 22:10:32,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 22:10:32,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 22:10:32,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 22:10:32,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32" (1/1) ... [2023-08-03 22:10:32,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:10:32,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:10:32,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 22:10:32,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 22:10:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 22:10:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 22:10:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 22:10:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 22:10:32,871 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 22:10:32,871 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 22:10:32,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 22:10:32,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 22:10:32,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 22:10:32,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 22:10:32,872 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 22:10:32,989 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 22:10:32,991 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 22:10:33,255 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 22:10:33,263 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 22:10:33,263 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-03 22:10:33,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:10:33 BoogieIcfgContainer [2023-08-03 22:10:33,266 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 22:10:33,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 22:10:33,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 22:10:33,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 22:10:33,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 10:10:32" (1/3) ... [2023-08-03 22:10:33,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f3c5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:10:33, skipping insertion in model container [2023-08-03 22:10:33,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:10:32" (2/3) ... [2023-08-03 22:10:33,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f3c5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:10:33, skipping insertion in model container [2023-08-03 22:10:33,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:10:33" (3/3) ... [2023-08-03 22:10:33,294 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow_bound2.i [2023-08-03 22:10:33,305 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 22:10:33,313 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 22:10:33,313 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-03 22:10:33,313 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 22:10:33,379 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 22:10:33,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 173 transitions, 351 flow [2023-08-03 22:10:33,492 INFO L124 PetriNetUnfolderBase]: 13/222 cut-off events. [2023-08-03 22:10:33,492 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:10:33,501 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. [2023-08-03 22:10:33,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 173 transitions, 351 flow [2023-08-03 22:10:33,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 172 transitions, 349 flow [2023-08-03 22:10:33,509 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:10:33,517 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 172 transitions, 349 flow [2023-08-03 22:10:33,519 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 172 transitions, 349 flow [2023-08-03 22:10:33,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 172 transitions, 349 flow [2023-08-03 22:10:33,559 INFO L124 PetriNetUnfolderBase]: 12/221 cut-off events. [2023-08-03 22:10:33,559 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:10:33,561 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. [2023-08-03 22:10:33,565 INFO L119 LiptonReduction]: Number of co-enabled transitions 8360 [2023-08-03 22:10:38,005 INFO L134 LiptonReduction]: Checked pairs total: 12840 [2023-08-03 22:10:38,005 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-08-03 22:10:38,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:10:38,022 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;@189fd252, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:10:38,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:10:38,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:10:38,027 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-03 22:10:38,027 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:10:38,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:38,027 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 22:10:38,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:10:38,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:38,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1449286438, now seen corresponding path program 1 times [2023-08-03 22:10:38,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:38,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527512081] [2023-08-03 22:10:38,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:38,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:10:38,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:10:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:10:38,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:10:38,201 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:10:38,202 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:10:38,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 22:10:38,204 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:10:38,206 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 22:10:38,208 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 22:10:38,208 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 22:10:38,241 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 22:10:38,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 250 transitions, 512 flow [2023-08-03 22:10:38,325 INFO L124 PetriNetUnfolderBase]: 22/353 cut-off events. [2023-08-03 22:10:38,325 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:38,330 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. [2023-08-03 22:10:38,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 250 transitions, 512 flow [2023-08-03 22:10:38,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 249 transitions, 510 flow [2023-08-03 22:10:38,333 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:10:38,333 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 249 transitions, 510 flow [2023-08-03 22:10:38,333 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 249 transitions, 510 flow [2023-08-03 22:10:38,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 249 transitions, 510 flow [2023-08-03 22:10:38,384 INFO L124 PetriNetUnfolderBase]: 21/352 cut-off events. [2023-08-03 22:10:38,384 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:38,386 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. [2023-08-03 22:10:38,403 INFO L119 LiptonReduction]: Number of co-enabled transitions 28424 [2023-08-03 22:10:43,909 INFO L134 LiptonReduction]: Checked pairs total: 44145 [2023-08-03 22:10:43,909 INFO L136 LiptonReduction]: Total number of compositions: 270 [2023-08-03 22:10:43,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:10:43,912 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;@189fd252, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:10:43,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:10:43,918 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:10:43,918 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-08-03 22:10:43,918 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:43,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:43,918 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 22:10:43,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:10:43,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:43,919 INFO L85 PathProgramCache]: Analyzing trace with hash -797422290, now seen corresponding path program 1 times [2023-08-03 22:10:43,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:43,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267972984] [2023-08-03 22:10:43,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:43,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:44,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:44,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:44,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267972984] [2023-08-03 22:10:44,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267972984] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:10:44,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141659115] [2023-08-03 22:10:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:44,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:10:44,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:10:44,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:10:44,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 22:10:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:44,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 22:10:44,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:10:44,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:44,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 22:10:44,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141659115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:44,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 22:10:44,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 22:10:44,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897027142] [2023-08-03 22:10:44,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:44,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:10:44,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:44,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:10:44,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:10:44,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 520 [2023-08-03 22:10:44,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 116 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) [2023-08-03 22:10:44,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:44,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 520 [2023-08-03 22:10:44,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:44,925 INFO L124 PetriNetUnfolderBase]: 3355/6141 cut-off events. [2023-08-03 22:10:44,925 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-03 22:10:44,931 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 214. Compared 43066 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. [2023-08-03 22:10:44,938 INFO L140 encePairwiseOnDemand]: 514/520 looper letters, 0 selfloop transitions, 0 changer transitions 90/90 dead transitions. [2023-08-03 22:10:44,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 90 transitions, 352 flow [2023-08-03 22:10:44,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:10:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:10:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1208 transitions. [2023-08-03 22:10:44,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646153846153846 [2023-08-03 22:10:44,953 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1208 transitions. [2023-08-03 22:10:44,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1208 transitions. [2023-08-03 22:10:44,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:44,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1208 transitions. [2023-08-03 22:10:44,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 241.6) internal successors, (1208), 5 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:44,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 520.0) internal successors, (3120), 6 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:44,971 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 520.0) internal successors, (3120), 6 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:44,973 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 116 flow. Second operand 5 states and 1208 transitions. [2023-08-03 22:10:44,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 90 transitions, 352 flow [2023-08-03 22:10:44,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 90 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:10:44,977 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-03 22:10:44,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=520, 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} [2023-08-03 22:10:44,981 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2023-08-03 22:10:44,981 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-03 22:10:44,982 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) [2023-08-03 22:10:44,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:10:44,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 22:10:45,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:10:45,188 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:10:45,189 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 22:10:45,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 250 transitions, 512 flow [2023-08-03 22:10:45,248 INFO L124 PetriNetUnfolderBase]: 22/353 cut-off events. [2023-08-03 22:10:45,249 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:45,250 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. [2023-08-03 22:10:45,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 250 transitions, 512 flow [2023-08-03 22:10:45,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 249 transitions, 510 flow [2023-08-03 22:10:45,253 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:10:45,253 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 249 transitions, 510 flow [2023-08-03 22:10:45,253 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 249 transitions, 510 flow [2023-08-03 22:10:45,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 249 transitions, 510 flow [2023-08-03 22:10:45,287 INFO L124 PetriNetUnfolderBase]: 21/352 cut-off events. [2023-08-03 22:10:45,287 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:10:45,290 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. [2023-08-03 22:10:45,300 INFO L119 LiptonReduction]: Number of co-enabled transitions 28424 [2023-08-03 22:10:50,260 INFO L134 LiptonReduction]: Checked pairs total: 41287 [2023-08-03 22:10:50,260 INFO L136 LiptonReduction]: Total number of compositions: 271 [2023-08-03 22:10:50,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 22:10:50,267 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;@189fd252, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:10:50,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-03 22:10:50,270 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:10:50,270 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-08-03 22:10:50,270 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 22:10:50,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:50,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:10:50,270 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)] === [2023-08-03 22:10:50,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:50,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2125409699, now seen corresponding path program 1 times [2023-08-03 22:10:50,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:50,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227224450] [2023-08-03 22:10:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:50,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:50,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:50,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227224450] [2023-08-03 22:10:50,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227224450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:50,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:10:50,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:10:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242259781] [2023-08-03 22:10:50,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:50,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:10:50,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:10:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:10:50,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 521 [2023-08-03 22:10:50,493 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) [2023-08-03 22:10:50,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:50,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 521 [2023-08-03 22:10:50,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:51,086 INFO L124 PetriNetUnfolderBase]: 4541/7250 cut-off events. [2023-08-03 22:10:51,087 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-03 22:10:51,094 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 246. Compared 43972 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. [2023-08-03 22:10:51,124 INFO L140 encePairwiseOnDemand]: 514/521 looper letters, 104 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2023-08-03 22:10:51,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 116 transitions, 467 flow [2023-08-03 22:10:51,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:10:51,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:10:51,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1227 transitions. [2023-08-03 22:10:51,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710172744721689 [2023-08-03 22:10:51,128 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1227 transitions. [2023-08-03 22:10:51,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1227 transitions. [2023-08-03 22:10:51,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:51,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1227 transitions. [2023-08-03 22:10:51,132 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) [2023-08-03 22:10:51,136 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) [2023-08-03 22:10:51,137 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) [2023-08-03 22:10:51,137 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 116 flow. Second operand 5 states and 1227 transitions. [2023-08-03 22:10:51,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 116 transitions, 467 flow [2023-08-03 22:10:51,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 116 transitions, 465 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 22:10:51,141 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 137 flow [2023-08-03 22:10:51,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, 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} [2023-08-03 22:10:51,142 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-08-03 22:10:51,143 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 137 flow [2023-08-03 22:10:51,143 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) [2023-08-03 22:10:51,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:51,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:10:51,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 22:10:51,144 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)] === [2023-08-03 22:10:51,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:51,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1885665045, now seen corresponding path program 1 times [2023-08-03 22:10:51,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:51,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974505893] [2023-08-03 22:10:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:51,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:51,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:51,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974505893] [2023-08-03 22:10:51,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974505893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:51,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:10:51,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:10:51,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831177437] [2023-08-03 22:10:51,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:51,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 22:10:51,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:51,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 22:10:51,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:10:51,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 521 [2023-08-03 22:10:51,360 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) [2023-08-03 22:10:51,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:51,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 521 [2023-08-03 22:10:51,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:52,373 INFO L124 PetriNetUnfolderBase]: 5555/9286 cut-off events. [2023-08-03 22:10:52,374 INFO L125 PetriNetUnfolderBase]: For 994/994 co-relation queries the response was YES. [2023-08-03 22:10:52,389 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 298. Compared 60920 event pairs, 903 based on Foata normal form. 0/7631 useless extension candidates. Maximal degree in co-relation 15297. Up to 2710 conditions per place. [2023-08-03 22:10:52,431 INFO L140 encePairwiseOnDemand]: 510/521 looper letters, 209 selfloop transitions, 26 changer transitions 0/242 dead transitions. [2023-08-03 22:10:52,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 242 transitions, 1020 flow [2023-08-03 22:10:52,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 22:10:52,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 22:10:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2830 transitions. [2023-08-03 22:10:52,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4526551503518874 [2023-08-03 22:10:52,438 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2830 transitions. [2023-08-03 22:10:52,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2830 transitions. [2023-08-03 22:10:52,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:52,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2830 transitions. [2023-08-03 22:10:52,446 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) [2023-08-03 22:10:52,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 521.0) internal successors, (6773), 13 states have internal predecessors, (6773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:52,457 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 521.0) internal successors, (6773), 13 states have internal predecessors, (6773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:52,458 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 137 flow. Second operand 12 states and 2830 transitions. [2023-08-03 22:10:52,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 242 transitions, 1020 flow [2023-08-03 22:10:52,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 242 transitions, 1015 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:10:52,477 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 272 flow [2023-08-03 22:10:52,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, 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=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=272, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-08-03 22:10:52,483 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-08-03 22:10:52,483 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 272 flow [2023-08-03 22:10:52,484 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) [2023-08-03 22:10:52,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:52,484 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:10:52,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 22:10:52,486 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)] === [2023-08-03 22:10:52,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash -888832832, now seen corresponding path program 1 times [2023-08-03 22:10:52,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:52,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808434234] [2023-08-03 22:10:52,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:52,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 22:10:52,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:52,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808434234] [2023-08-03 22:10:52,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808434234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:52,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:10:52,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:10:52,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381351095] [2023-08-03 22:10:52,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:52,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:10:52,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:10:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:10:52,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 521 [2023-08-03 22:10:52,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 272 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) [2023-08-03 22:10:52,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:52,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 521 [2023-08-03 22:10:52,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:53,523 INFO L124 PetriNetUnfolderBase]: 6254/10319 cut-off events. [2023-08-03 22:10:53,523 INFO L125 PetriNetUnfolderBase]: For 6268/6348 co-relation queries the response was YES. [2023-08-03 22:10:53,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25530 conditions, 10319 events. 6254/10319 cut-off events. For 6268/6348 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 67288 event pairs, 2293 based on Foata normal form. 70/8786 useless extension candidates. Maximal degree in co-relation 19704. Up to 6922 conditions per place. [2023-08-03 22:10:53,567 INFO L140 encePairwiseOnDemand]: 516/521 looper letters, 117 selfloop transitions, 14 changer transitions 0/139 dead transitions. [2023-08-03 22:10:53,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 139 transitions, 788 flow [2023-08-03 22:10:53,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:10:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:10:53,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1216 transitions. [2023-08-03 22:10:53,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46679462571976965 [2023-08-03 22:10:53,575 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1216 transitions. [2023-08-03 22:10:53,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1216 transitions. [2023-08-03 22:10:53,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:53,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1216 transitions. [2023-08-03 22:10:53,578 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) [2023-08-03 22:10:53,581 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) [2023-08-03 22:10:53,582 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) [2023-08-03 22:10:53,582 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 272 flow. Second operand 5 states and 1216 transitions. [2023-08-03 22:10:53,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 139 transitions, 788 flow [2023-08-03 22:10:53,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 139 transitions, 765 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 22:10:53,638 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 370 flow [2023-08-03 22:10:53,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2023-08-03 22:10:53,640 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2023-08-03 22:10:53,640 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 370 flow [2023-08-03 22:10:53,641 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) [2023-08-03 22:10:53,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:53,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:10:53,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 22:10:53,641 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)] === [2023-08-03 22:10:53,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:53,641 INFO L85 PathProgramCache]: Analyzing trace with hash 352249401, now seen corresponding path program 1 times [2023-08-03 22:10:53,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:53,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82290423] [2023-08-03 22:10:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:53,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:53,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:53,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82290423] [2023-08-03 22:10:53,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82290423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:53,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:10:53,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:10:53,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113694207] [2023-08-03 22:10:53,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:53,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 22:10:53,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:53,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 22:10:53,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:10:53,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 521 [2023-08-03 22:10:53,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 370 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) [2023-08-03 22:10:53,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:53,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 521 [2023-08-03 22:10:53,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:55,146 INFO L124 PetriNetUnfolderBase]: 8360/14331 cut-off events. [2023-08-03 22:10:55,146 INFO L125 PetriNetUnfolderBase]: For 9356/9420 co-relation queries the response was YES. [2023-08-03 22:10:55,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36909 conditions, 14331 events. 8360/14331 cut-off events. For 9356/9420 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 104147 event pairs, 2472 based on Foata normal form. 49/12601 useless extension candidates. Maximal degree in co-relation 31658. Up to 4168 conditions per place. [2023-08-03 22:10:55,208 INFO L140 encePairwiseOnDemand]: 512/521 looper letters, 200 selfloop transitions, 25 changer transitions 0/233 dead transitions. [2023-08-03 22:10:55,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 233 transitions, 1317 flow [2023-08-03 22:10:55,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 22:10:55,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 22:10:55,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2138 transitions. [2023-08-03 22:10:55,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4559607592237151 [2023-08-03 22:10:55,213 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2138 transitions. [2023-08-03 22:10:55,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2138 transitions. [2023-08-03 22:10:55,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:55,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2138 transitions. [2023-08-03 22:10:55,218 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) [2023-08-03 22:10:55,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 521.0) internal successors, (5210), 10 states have internal predecessors, (5210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:55,224 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 521.0) internal successors, (5210), 10 states have internal predecessors, (5210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:55,224 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 370 flow. Second operand 9 states and 2138 transitions. [2023-08-03 22:10:55,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 233 transitions, 1317 flow [2023-08-03 22:10:55,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 233 transitions, 1302 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:10:55,333 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 535 flow [2023-08-03 22:10:55,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=535, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2023-08-03 22:10:55,335 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 34 predicate places. [2023-08-03 22:10:55,335 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 535 flow [2023-08-03 22:10:55,335 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) [2023-08-03 22:10:55,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:55,336 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:10:55,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 22:10:55,336 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)] === [2023-08-03 22:10:55,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:55,336 INFO L85 PathProgramCache]: Analyzing trace with hash 530180417, now seen corresponding path program 1 times [2023-08-03 22:10:55,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:55,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364511999] [2023-08-03 22:10:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:55,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 22:10:55,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:55,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364511999] [2023-08-03 22:10:55,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364511999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:55,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:10:55,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:10:55,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252664606] [2023-08-03 22:10:55,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:55,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:10:55,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:55,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:10:55,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:10:55,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 521 [2023-08-03 22:10:55,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 535 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) [2023-08-03 22:10:55,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:55,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 521 [2023-08-03 22:10:55,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:57,231 INFO L124 PetriNetUnfolderBase]: 11621/19693 cut-off events. [2023-08-03 22:10:57,231 INFO L125 PetriNetUnfolderBase]: For 20695/20849 co-relation queries the response was YES. [2023-08-03 22:10:57,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54208 conditions, 19693 events. 11621/19693 cut-off events. For 20695/20849 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 147307 event pairs, 5130 based on Foata normal form. 107/18024 useless extension candidates. Maximal degree in co-relation 39480. Up to 10462 conditions per place. [2023-08-03 22:10:57,309 INFO L140 encePairwiseOnDemand]: 515/521 looper letters, 189 selfloop transitions, 33 changer transitions 0/231 dead transitions. [2023-08-03 22:10:57,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 231 transitions, 1630 flow [2023-08-03 22:10:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 22:10:57,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 22:10:57,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1912 transitions. [2023-08-03 22:10:57,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45873320537428025 [2023-08-03 22:10:57,314 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1912 transitions. [2023-08-03 22:10:57,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1912 transitions. [2023-08-03 22:10:57,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:57,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1912 transitions. [2023-08-03 22:10:57,319 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) [2023-08-03 22:10:57,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 521.0) internal successors, (4689), 9 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:57,325 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 521.0) internal successors, (4689), 9 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:57,326 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 535 flow. Second operand 8 states and 1912 transitions. [2023-08-03 22:10:57,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 231 transitions, 1630 flow [2023-08-03 22:10:57,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 231 transitions, 1619 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-03 22:10:57,490 INFO L231 Difference]: Finished difference. Result has 96 places, 104 transitions, 756 flow [2023-08-03 22:10:57,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=756, PETRI_PLACES=96, PETRI_TRANSITIONS=104} [2023-08-03 22:10:57,491 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2023-08-03 22:10:57,491 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 104 transitions, 756 flow [2023-08-03 22:10:57,492 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) [2023-08-03 22:10:57,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:57,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:10:57,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 22:10:57,492 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)] === [2023-08-03 22:10:57,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:57,493 INFO L85 PathProgramCache]: Analyzing trace with hash 730813869, now seen corresponding path program 1 times [2023-08-03 22:10:57,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:57,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665502239] [2023-08-03 22:10:57,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:57,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:57,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:57,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665502239] [2023-08-03 22:10:57,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665502239] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:10:57,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869214252] [2023-08-03 22:10:57,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:57,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:10:57,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:10:57,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:10:57,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 22:10:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:57,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 22:10:57,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:10:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:57,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:10:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:10:57,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869214252] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:10:57,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:10:57,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 22:10:57,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155089357] [2023-08-03 22:10:57,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:10:57,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:10:57,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:57,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:10:57,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:10:57,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 521 [2023-08-03 22:10:57,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 104 transitions, 756 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) [2023-08-03 22:10:57,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:57,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 521 [2023-08-03 22:10:57,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:10:59,020 INFO L124 PetriNetUnfolderBase]: 9900/16916 cut-off events. [2023-08-03 22:10:59,020 INFO L125 PetriNetUnfolderBase]: For 20866/21297 co-relation queries the response was YES. [2023-08-03 22:10:59,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48336 conditions, 16916 events. 9900/16916 cut-off events. For 20866/21297 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 127957 event pairs, 4130 based on Foata normal form. 100/15551 useless extension candidates. Maximal degree in co-relation 35702. Up to 14895 conditions per place. [2023-08-03 22:10:59,101 INFO L140 encePairwiseOnDemand]: 517/521 looper letters, 124 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2023-08-03 22:10:59,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 140 transitions, 1131 flow [2023-08-03 22:10:59,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:10:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:10:59,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 972 transitions. [2023-08-03 22:10:59,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46641074856046066 [2023-08-03 22:10:59,104 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 972 transitions. [2023-08-03 22:10:59,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 972 transitions. [2023-08-03 22:10:59,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:10:59,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 972 transitions. [2023-08-03 22:10:59,106 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) [2023-08-03 22:10:59,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:59,110 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:59,110 INFO L175 Difference]: Start difference. First operand has 96 places, 104 transitions, 756 flow. Second operand 4 states and 972 transitions. [2023-08-03 22:10:59,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 140 transitions, 1131 flow [2023-08-03 22:10:59,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 140 transitions, 1085 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 22:10:59,294 INFO L231 Difference]: Finished difference. Result has 99 places, 106 transitions, 736 flow [2023-08-03 22:10:59,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=736, PETRI_PLACES=99, PETRI_TRANSITIONS=106} [2023-08-03 22:10:59,295 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2023-08-03 22:10:59,295 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 106 transitions, 736 flow [2023-08-03 22:10:59,295 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) [2023-08-03 22:10:59,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:10:59,296 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:10:59,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 22:10:59,500 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,SelfDestructingSolverStorable7 [2023-08-03 22:10:59,500 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)] === [2023-08-03 22:10:59,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:10:59,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1597619747, now seen corresponding path program 1 times [2023-08-03 22:10:59,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:10:59,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139526715] [2023-08-03 22:10:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:10:59,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:10:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:10:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 22:10:59,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:10:59,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139526715] [2023-08-03 22:10:59,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139526715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:10:59,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:10:59,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:10:59,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954227561] [2023-08-03 22:10:59,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:10:59,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 22:10:59,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:10:59,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 22:10:59,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:10:59,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 521 [2023-08-03 22:10:59,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 106 transitions, 736 flow. Second operand has 6 states, 6 states have (on average 218.16666666666666) internal successors, (1309), 6 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:10:59,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:10:59,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 521 [2023-08-03 22:10:59,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:02,280 INFO L124 PetriNetUnfolderBase]: 14717/25551 cut-off events. [2023-08-03 22:11:02,280 INFO L125 PetriNetUnfolderBase]: For 29284/29780 co-relation queries the response was YES. [2023-08-03 22:11:02,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73341 conditions, 25551 events. 14717/25551 cut-off events. For 29284/29780 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 208512 event pairs, 6048 based on Foata normal form. 91/24057 useless extension candidates. Maximal degree in co-relation 53221. Up to 8454 conditions per place. [2023-08-03 22:11:02,384 INFO L140 encePairwiseOnDemand]: 512/521 looper letters, 240 selfloop transitions, 46 changer transitions 0/294 dead transitions. [2023-08-03 22:11:02,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 294 transitions, 2306 flow [2023-08-03 22:11:02,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 22:11:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 22:11:02,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2131 transitions. [2023-08-03 22:11:02,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45446790360418 [2023-08-03 22:11:02,390 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2131 transitions. [2023-08-03 22:11:02,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2131 transitions. [2023-08-03 22:11:02,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:02,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2131 transitions. [2023-08-03 22:11:02,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 236.77777777777777) internal successors, (2131), 9 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:02,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 521.0) internal successors, (5210), 10 states have internal predecessors, (5210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:02,402 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 521.0) internal successors, (5210), 10 states have internal predecessors, (5210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:02,402 INFO L175 Difference]: Start difference. First operand has 99 places, 106 transitions, 736 flow. Second operand 9 states and 2131 transitions. [2023-08-03 22:11:02,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 294 transitions, 2306 flow [2023-08-03 22:11:02,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 294 transitions, 2306 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:11:02,726 INFO L231 Difference]: Finished difference. Result has 110 places, 128 transitions, 1107 flow [2023-08-03 22:11:02,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1107, PETRI_PLACES=110, PETRI_TRANSITIONS=128} [2023-08-03 22:11:02,727 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 57 predicate places. [2023-08-03 22:11:02,727 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 128 transitions, 1107 flow [2023-08-03 22:11:02,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 218.16666666666666) internal successors, (1309), 6 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:02,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:02,728 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:11:02,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 22:11:02,728 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)] === [2023-08-03 22:11:02,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:02,728 INFO L85 PathProgramCache]: Analyzing trace with hash -680968099, now seen corresponding path program 1 times [2023-08-03 22:11:02,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:02,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356446652] [2023-08-03 22:11:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:02,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 22:11:02,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:02,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356446652] [2023-08-03 22:11:02,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356446652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:02,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:02,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:11:02,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54864940] [2023-08-03 22:11:02,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:02,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:11:02,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:02,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:11:02,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:11:02,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 521 [2023-08-03 22:11:02,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 128 transitions, 1107 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) [2023-08-03 22:11:02,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:02,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 521 [2023-08-03 22:11:02,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:03,495 INFO L124 PetriNetUnfolderBase]: 2421/4995 cut-off events. [2023-08-03 22:11:03,495 INFO L125 PetriNetUnfolderBase]: For 6651/6669 co-relation queries the response was YES. [2023-08-03 22:11:03,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14629 conditions, 4995 events. 2421/4995 cut-off events. For 6651/6669 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 36070 event pairs, 844 based on Foata normal form. 372/5046 useless extension candidates. Maximal degree in co-relation 11270. Up to 2376 conditions per place. [2023-08-03 22:11:03,511 INFO L140 encePairwiseOnDemand]: 509/521 looper letters, 119 selfloop transitions, 13 changer transitions 16/158 dead transitions. [2023-08-03 22:11:03,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 158 transitions, 1368 flow [2023-08-03 22:11:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:11:03,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:11:03,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 932 transitions. [2023-08-03 22:11:03,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472168905950096 [2023-08-03 22:11:03,514 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 932 transitions. [2023-08-03 22:11:03,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 932 transitions. [2023-08-03 22:11:03,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:03,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 932 transitions. [2023-08-03 22:11:03,516 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) [2023-08-03 22:11:03,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:03,519 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:03,519 INFO L175 Difference]: Start difference. First operand has 110 places, 128 transitions, 1107 flow. Second operand 4 states and 932 transitions. [2023-08-03 22:11:03,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 158 transitions, 1368 flow [2023-08-03 22:11:03,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 158 transitions, 1334 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-03 22:11:03,553 INFO L231 Difference]: Finished difference. Result has 112 places, 98 transitions, 685 flow [2023-08-03 22:11:03,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=685, PETRI_PLACES=112, PETRI_TRANSITIONS=98} [2023-08-03 22:11:03,554 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2023-08-03 22:11:03,554 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 98 transitions, 685 flow [2023-08-03 22:11:03,554 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) [2023-08-03 22:11:03,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:03,554 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:11:03,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 22:11:03,554 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)] === [2023-08-03 22:11:03,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:03,555 INFO L85 PathProgramCache]: Analyzing trace with hash 677340381, now seen corresponding path program 1 times [2023-08-03 22:11:03,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:03,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677204672] [2023-08-03 22:11:03,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:03,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:11:03,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:03,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677204672] [2023-08-03 22:11:03,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677204672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:03,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:03,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:11:03,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975714210] [2023-08-03 22:11:03,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:03,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:11:03,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:03,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:11:03,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:11:03,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 521 [2023-08-03 22:11:03,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 98 transitions, 685 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) [2023-08-03 22:11:03,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:03,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 521 [2023-08-03 22:11:03,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:04,215 INFO L124 PetriNetUnfolderBase]: 2088/4385 cut-off events. [2023-08-03 22:11:04,215 INFO L125 PetriNetUnfolderBase]: For 5820/5842 co-relation queries the response was YES. [2023-08-03 22:11:04,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14999 conditions, 4385 events. 2088/4385 cut-off events. For 5820/5842 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 31321 event pairs, 968 based on Foata normal form. 19/4090 useless extension candidates. Maximal degree in co-relation 11410. Up to 2261 conditions per place. [2023-08-03 22:11:04,230 INFO L140 encePairwiseOnDemand]: 516/521 looper letters, 141 selfloop transitions, 21 changer transitions 10/182 dead transitions. [2023-08-03 22:11:04,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 182 transitions, 1446 flow [2023-08-03 22:11:04,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:11:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:11:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1212 transitions. [2023-08-03 22:11:04,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652591170825336 [2023-08-03 22:11:04,234 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1212 transitions. [2023-08-03 22:11:04,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1212 transitions. [2023-08-03 22:11:04,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:04,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1212 transitions. [2023-08-03 22:11:04,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 242.4) internal successors, (1212), 5 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:04,240 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) [2023-08-03 22:11:04,240 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) [2023-08-03 22:11:04,240 INFO L175 Difference]: Start difference. First operand has 112 places, 98 transitions, 685 flow. Second operand 5 states and 1212 transitions. [2023-08-03 22:11:04,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 182 transitions, 1446 flow [2023-08-03 22:11:04,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 182 transitions, 1442 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 22:11:04,269 INFO L231 Difference]: Finished difference. Result has 114 places, 100 transitions, 744 flow [2023-08-03 22:11:04,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=744, PETRI_PLACES=114, PETRI_TRANSITIONS=100} [2023-08-03 22:11:04,269 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 61 predicate places. [2023-08-03 22:11:04,270 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 100 transitions, 744 flow [2023-08-03 22:11:04,270 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) [2023-08-03 22:11:04,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:04,270 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:11:04,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 22:11:04,270 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)] === [2023-08-03 22:11:04,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:04,271 INFO L85 PathProgramCache]: Analyzing trace with hash 637214238, now seen corresponding path program 1 times [2023-08-03 22:11:04,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:04,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557649684] [2023-08-03 22:11:04,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:04,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:11:04,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:04,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557649684] [2023-08-03 22:11:04,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557649684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:04,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:04,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:11:04,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094512420] [2023-08-03 22:11:04,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:04,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:11:04,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:04,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:11:04,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:11:04,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 521 [2023-08-03 22:11:04,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 100 transitions, 744 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) [2023-08-03 22:11:04,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:04,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 521 [2023-08-03 22:11:04,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:05,104 INFO L124 PetriNetUnfolderBase]: 2125/4491 cut-off events. [2023-08-03 22:11:05,104 INFO L125 PetriNetUnfolderBase]: For 6975/7001 co-relation queries the response was YES. [2023-08-03 22:11:05,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15754 conditions, 4491 events. 2125/4491 cut-off events. For 6975/7001 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 32551 event pairs, 941 based on Foata normal form. 31/4207 useless extension candidates. Maximal degree in co-relation 12941. Up to 2288 conditions per place. [2023-08-03 22:11:05,122 INFO L140 encePairwiseOnDemand]: 516/521 looper letters, 139 selfloop transitions, 23 changer transitions 11/184 dead transitions. [2023-08-03 22:11:05,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 184 transitions, 1511 flow [2023-08-03 22:11:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:11:05,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:11:05,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1211 transitions. [2023-08-03 22:11:05,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46487523992322455 [2023-08-03 22:11:05,125 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1211 transitions. [2023-08-03 22:11:05,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1211 transitions. [2023-08-03 22:11:05,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:05,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1211 transitions. [2023-08-03 22:11:05,129 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) [2023-08-03 22:11:05,132 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) [2023-08-03 22:11:05,133 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) [2023-08-03 22:11:05,133 INFO L175 Difference]: Start difference. First operand has 114 places, 100 transitions, 744 flow. Second operand 5 states and 1211 transitions. [2023-08-03 22:11:05,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 184 transitions, 1511 flow [2023-08-03 22:11:05,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 184 transitions, 1476 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 22:11:05,173 INFO L231 Difference]: Finished difference. Result has 118 places, 103 transitions, 786 flow [2023-08-03 22:11:05,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=786, PETRI_PLACES=118, PETRI_TRANSITIONS=103} [2023-08-03 22:11:05,173 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 65 predicate places. [2023-08-03 22:11:05,173 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 103 transitions, 786 flow [2023-08-03 22:11:05,174 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) [2023-08-03 22:11:05,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:05,174 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:11:05,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 22:11:05,174 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)] === [2023-08-03 22:11:05,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:05,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1910875739, now seen corresponding path program 1 times [2023-08-03 22:11:05,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:05,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543704957] [2023-08-03 22:11:05,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:05,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:11:05,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:05,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543704957] [2023-08-03 22:11:05,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543704957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:05,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:05,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:11:05,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728746382] [2023-08-03 22:11:05,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:05,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:11:05,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:05,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:11:05,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:11:05,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 521 [2023-08-03 22:11:05,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 103 transitions, 786 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) [2023-08-03 22:11:05,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:05,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 521 [2023-08-03 22:11:05,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:05,942 INFO L124 PetriNetUnfolderBase]: 2190/4735 cut-off events. [2023-08-03 22:11:05,942 INFO L125 PetriNetUnfolderBase]: For 9872/9914 co-relation queries the response was YES. [2023-08-03 22:11:05,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17291 conditions, 4735 events. 2190/4735 cut-off events. For 9872/9914 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 35956 event pairs, 1008 based on Foata normal form. 118/4548 useless extension candidates. Maximal degree in co-relation 16340. Up to 3169 conditions per place. [2023-08-03 22:11:05,966 INFO L140 encePairwiseOnDemand]: 511/521 looper letters, 143 selfloop transitions, 19 changer transitions 3/179 dead transitions. [2023-08-03 22:11:05,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 179 transitions, 1727 flow [2023-08-03 22:11:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:11:05,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:11:05,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 936 transitions. [2023-08-03 22:11:05,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4491362763915547 [2023-08-03 22:11:05,968 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 936 transitions. [2023-08-03 22:11:05,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 936 transitions. [2023-08-03 22:11:05,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:05,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 936 transitions. [2023-08-03 22:11:05,971 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) [2023-08-03 22:11:05,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:05,974 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:05,974 INFO L175 Difference]: Start difference. First operand has 118 places, 103 transitions, 786 flow. Second operand 4 states and 936 transitions. [2023-08-03 22:11:05,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 179 transitions, 1727 flow [2023-08-03 22:11:06,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 179 transitions, 1667 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 22:11:06,031 INFO L231 Difference]: Finished difference. Result has 120 places, 116 transitions, 898 flow [2023-08-03 22:11:06,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=898, PETRI_PLACES=120, PETRI_TRANSITIONS=116} [2023-08-03 22:11:06,032 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 67 predicate places. [2023-08-03 22:11:06,032 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 116 transitions, 898 flow [2023-08-03 22:11:06,033 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) [2023-08-03 22:11:06,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:06,033 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:11:06,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 22:11:06,033 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)] === [2023-08-03 22:11:06,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:06,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1581240949, now seen corresponding path program 1 times [2023-08-03 22:11:06,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:06,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299910621] [2023-08-03 22:11:06,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:06,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:11:06,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:06,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299910621] [2023-08-03 22:11:06,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299910621] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:06,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:06,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 22:11:06,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224028707] [2023-08-03 22:11:06,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:06,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 22:11:06,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:06,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 22:11:06,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:11:06,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 521 [2023-08-03 22:11:06,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 116 transitions, 898 flow. Second operand has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:06,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:06,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 521 [2023-08-03 22:11:06,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:06,963 INFO L124 PetriNetUnfolderBase]: 2259/4931 cut-off events. [2023-08-03 22:11:06,964 INFO L125 PetriNetUnfolderBase]: For 10848/10884 co-relation queries the response was YES. [2023-08-03 22:11:06,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19803 conditions, 4931 events. 2259/4931 cut-off events. For 10848/10884 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 37694 event pairs, 520 based on Foata normal form. 67/4699 useless extension candidates. Maximal degree in co-relation 19145. Up to 1342 conditions per place. [2023-08-03 22:11:06,986 INFO L140 encePairwiseOnDemand]: 514/521 looper letters, 212 selfloop transitions, 27 changer transitions 26/277 dead transitions. [2023-08-03 22:11:06,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 277 transitions, 2439 flow [2023-08-03 22:11:06,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 22:11:06,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 22:11:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1902 transitions. [2023-08-03 22:11:06,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45633397312859886 [2023-08-03 22:11:06,990 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1902 transitions. [2023-08-03 22:11:06,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1902 transitions. [2023-08-03 22:11:06,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:06,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1902 transitions. [2023-08-03 22:11:06,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 237.75) internal successors, (1902), 8 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:06,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 521.0) internal successors, (4689), 9 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:06,999 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 521.0) internal successors, (4689), 9 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:07,000 INFO L175 Difference]: Start difference. First operand has 120 places, 116 transitions, 898 flow. Second operand 8 states and 1902 transitions. [2023-08-03 22:11:07,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 277 transitions, 2439 flow [2023-08-03 22:11:07,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 277 transitions, 2438 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:11:07,062 INFO L231 Difference]: Finished difference. Result has 129 places, 122 transitions, 1029 flow [2023-08-03 22:11:07,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1029, PETRI_PLACES=129, PETRI_TRANSITIONS=122} [2023-08-03 22:11:07,063 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 76 predicate places. [2023-08-03 22:11:07,063 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 122 transitions, 1029 flow [2023-08-03 22:11:07,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:07,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:07,064 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:11:07,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 22:11:07,064 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)] === [2023-08-03 22:11:07,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:07,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1933152992, now seen corresponding path program 1 times [2023-08-03 22:11:07,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:07,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181940694] [2023-08-03 22:11:07,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:07,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:11:07,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:07,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181940694] [2023-08-03 22:11:07,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181940694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:07,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:07,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 22:11:07,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462517905] [2023-08-03 22:11:07,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:07,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 22:11:07,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:07,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 22:11:07,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:11:07,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 521 [2023-08-03 22:11:07,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 122 transitions, 1029 flow. Second operand has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:07,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:07,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 521 [2023-08-03 22:11:07,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:08,114 INFO L124 PetriNetUnfolderBase]: 2313/5135 cut-off events. [2023-08-03 22:11:08,114 INFO L125 PetriNetUnfolderBase]: For 14553/14632 co-relation queries the response was YES. [2023-08-03 22:11:08,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21216 conditions, 5135 events. 2313/5135 cut-off events. For 14553/14632 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 40157 event pairs, 575 based on Foata normal form. 115/4954 useless extension candidates. Maximal degree in co-relation 20581. Up to 1432 conditions per place. [2023-08-03 22:11:08,139 INFO L140 encePairwiseOnDemand]: 514/521 looper letters, 208 selfloop transitions, 30 changer transitions 27/278 dead transitions. [2023-08-03 22:11:08,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 278 transitions, 2554 flow [2023-08-03 22:11:08,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 22:11:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 22:11:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1899 transitions. [2023-08-03 22:11:08,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45561420345489445 [2023-08-03 22:11:08,143 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1899 transitions. [2023-08-03 22:11:08,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1899 transitions. [2023-08-03 22:11:08,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:08,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1899 transitions. [2023-08-03 22:11:08,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 237.375) internal successors, (1899), 8 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:08,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 521.0) internal successors, (4689), 9 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:08,152 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 521.0) internal successors, (4689), 9 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:08,152 INFO L175 Difference]: Start difference. First operand has 129 places, 122 transitions, 1029 flow. Second operand 8 states and 1899 transitions. [2023-08-03 22:11:08,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 278 transitions, 2554 flow [2023-08-03 22:11:08,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 278 transitions, 2535 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 22:11:08,227 INFO L231 Difference]: Finished difference. Result has 136 places, 128 transitions, 1156 flow [2023-08-03 22:11:08,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1156, PETRI_PLACES=136, PETRI_TRANSITIONS=128} [2023-08-03 22:11:08,227 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 83 predicate places. [2023-08-03 22:11:08,228 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 128 transitions, 1156 flow [2023-08-03 22:11:08,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:08,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:08,228 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] [2023-08-03 22:11:08,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-03 22:11:08,228 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)] === [2023-08-03 22:11:08,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:08,229 INFO L85 PathProgramCache]: Analyzing trace with hash 452939511, now seen corresponding path program 1 times [2023-08-03 22:11:08,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:08,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932371600] [2023-08-03 22:11:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:08,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:11:08,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932371600] [2023-08-03 22:11:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932371600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:08,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:08,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-03 22:11:08,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581765458] [2023-08-03 22:11:08,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:08,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 22:11:08,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 22:11:08,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-03 22:11:08,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 521 [2023-08-03 22:11:08,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 128 transitions, 1156 flow. Second operand has 8 states, 8 states have (on average 215.25) internal successors, (1722), 8 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:08,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:08,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 521 [2023-08-03 22:11:08,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:09,658 INFO L124 PetriNetUnfolderBase]: 2280/5097 cut-off events. [2023-08-03 22:11:09,658 INFO L125 PetriNetUnfolderBase]: For 16939/17015 co-relation queries the response was YES. [2023-08-03 22:11:09,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21642 conditions, 5097 events. 2280/5097 cut-off events. For 16939/17015 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 39953 event pairs, 530 based on Foata normal form. 127/4939 useless extension candidates. Maximal degree in co-relation 20785. Up to 1431 conditions per place. [2023-08-03 22:11:09,685 INFO L140 encePairwiseOnDemand]: 509/521 looper letters, 256 selfloop transitions, 63 changer transitions 45/377 dead transitions. [2023-08-03 22:11:09,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 377 transitions, 3391 flow [2023-08-03 22:11:09,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-03 22:11:09,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-03 22:11:09,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4504 transitions. [2023-08-03 22:11:09,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322456813819578 [2023-08-03 22:11:09,693 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4504 transitions. [2023-08-03 22:11:09,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4504 transitions. [2023-08-03 22:11:09,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:09,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4504 transitions. [2023-08-03 22:11:09,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 225.2) internal successors, (4504), 20 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:09,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 521.0) internal successors, (10941), 21 states have internal predecessors, (10941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:09,711 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 521.0) internal successors, (10941), 21 states have internal predecessors, (10941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:09,712 INFO L175 Difference]: Start difference. First operand has 136 places, 128 transitions, 1156 flow. Second operand 20 states and 4504 transitions. [2023-08-03 22:11:09,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 377 transitions, 3391 flow [2023-08-03 22:11:09,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 377 transitions, 3362 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-03 22:11:09,815 INFO L231 Difference]: Finished difference. Result has 154 places, 148 transitions, 1482 flow [2023-08-03 22:11:09,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1482, PETRI_PLACES=154, PETRI_TRANSITIONS=148} [2023-08-03 22:11:09,816 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 101 predicate places. [2023-08-03 22:11:09,816 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 148 transitions, 1482 flow [2023-08-03 22:11:09,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 215.25) internal successors, (1722), 8 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:09,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:09,817 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:11:09,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-03 22:11:09,817 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)] === [2023-08-03 22:11:09,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:09,817 INFO L85 PathProgramCache]: Analyzing trace with hash -655003457, now seen corresponding path program 1 times [2023-08-03 22:11:09,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:09,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041322293] [2023-08-03 22:11:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:09,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:11:09,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:09,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041322293] [2023-08-03 22:11:09,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041322293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:09,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:09,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 22:11:09,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187138504] [2023-08-03 22:11:09,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:09,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 22:11:09,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:09,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 22:11:09,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-03 22:11:10,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 521 [2023-08-03 22:11:10,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 148 transitions, 1482 flow. Second operand has 7 states, 7 states have (on average 218.57142857142858) internal successors, (1530), 7 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:10,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:10,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 521 [2023-08-03 22:11:10,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:11,057 INFO L124 PetriNetUnfolderBase]: 2237/5036 cut-off events. [2023-08-03 22:11:11,057 INFO L125 PetriNetUnfolderBase]: For 20192/20278 co-relation queries the response was YES. [2023-08-03 22:11:11,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22392 conditions, 5036 events. 2237/5036 cut-off events. For 20192/20278 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 39537 event pairs, 574 based on Foata normal form. 128/4881 useless extension candidates. Maximal degree in co-relation 21083. Up to 1432 conditions per place. [2023-08-03 22:11:11,087 INFO L140 encePairwiseOnDemand]: 513/521 looper letters, 247 selfloop transitions, 45 changer transitions 36/341 dead transitions. [2023-08-03 22:11:11,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 341 transitions, 3478 flow [2023-08-03 22:11:11,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-03 22:11:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-03 22:11:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3004 transitions. [2023-08-03 22:11:11,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435257640631921 [2023-08-03 22:11:11,091 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3004 transitions. [2023-08-03 22:11:11,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3004 transitions. [2023-08-03 22:11:11,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:11,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3004 transitions. [2023-08-03 22:11:11,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 231.07692307692307) internal successors, (3004), 13 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:11,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 521.0) internal successors, (7294), 14 states have internal predecessors, (7294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:11,102 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 521.0) internal successors, (7294), 14 states have internal predecessors, (7294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:11,102 INFO L175 Difference]: Start difference. First operand has 154 places, 148 transitions, 1482 flow. Second operand 13 states and 3004 transitions. [2023-08-03 22:11:11,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 341 transitions, 3478 flow [2023-08-03 22:11:11,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 341 transitions, 3412 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-08-03 22:11:11,181 INFO L231 Difference]: Finished difference. Result has 159 places, 157 transitions, 1642 flow [2023-08-03 22:11:11,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1642, PETRI_PLACES=159, PETRI_TRANSITIONS=157} [2023-08-03 22:11:11,181 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 106 predicate places. [2023-08-03 22:11:11,181 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 157 transitions, 1642 flow [2023-08-03 22:11:11,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 218.57142857142858) internal successors, (1530), 7 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:11,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:11,182 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:11:11,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-03 22:11:11,182 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)] === [2023-08-03 22:11:11,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:11,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1608067142, now seen corresponding path program 1 times [2023-08-03 22:11:11,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:11,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045089501] [2023-08-03 22:11:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:11,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 22:11:11,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:11,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045089501] [2023-08-03 22:11:11,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045089501] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:11,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:11,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:11:11,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641596234] [2023-08-03 22:11:11,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:11,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:11:11,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:11,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:11:11,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:11:11,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 521 [2023-08-03 22:11:11,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 157 transitions, 1642 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) [2023-08-03 22:11:11,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:11,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 521 [2023-08-03 22:11:11,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:12,299 INFO L124 PetriNetUnfolderBase]: 3102/6864 cut-off events. [2023-08-03 22:11:12,300 INFO L125 PetriNetUnfolderBase]: For 27150/27346 co-relation queries the response was YES. [2023-08-03 22:11:12,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30654 conditions, 6864 events. 3102/6864 cut-off events. For 27150/27346 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 56720 event pairs, 1022 based on Foata normal form. 219/6839 useless extension candidates. Maximal degree in co-relation 28829. Up to 4372 conditions per place. [2023-08-03 22:11:12,346 INFO L140 encePairwiseOnDemand]: 511/521 looper letters, 186 selfloop transitions, 40 changer transitions 7/263 dead transitions. [2023-08-03 22:11:12,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 263 transitions, 3142 flow [2023-08-03 22:11:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:11:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:11:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 952 transitions. [2023-08-03 22:11:12,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45681381957773515 [2023-08-03 22:11:12,349 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 952 transitions. [2023-08-03 22:11:12,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 952 transitions. [2023-08-03 22:11:12,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:12,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 952 transitions. [2023-08-03 22:11:12,354 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) [2023-08-03 22:11:12,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:12,356 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:12,356 INFO L175 Difference]: Start difference. First operand has 159 places, 157 transitions, 1642 flow. Second operand 4 states and 952 transitions. [2023-08-03 22:11:12,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 263 transitions, 3142 flow [2023-08-03 22:11:12,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 263 transitions, 3080 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-03 22:11:12,466 INFO L231 Difference]: Finished difference. Result has 156 places, 188 transitions, 2072 flow [2023-08-03 22:11:12,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2072, PETRI_PLACES=156, PETRI_TRANSITIONS=188} [2023-08-03 22:11:12,466 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 103 predicate places. [2023-08-03 22:11:12,467 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 188 transitions, 2072 flow [2023-08-03 22:11:12,467 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) [2023-08-03 22:11:12,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:12,467 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:11:12,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 22:11:12,467 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)] === [2023-08-03 22:11:12,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash -232603790, now seen corresponding path program 2 times [2023-08-03 22:11:12,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:12,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701782530] [2023-08-03 22:11:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 22:11:12,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:12,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701782530] [2023-08-03 22:11:12,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701782530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:12,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:12,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:11:12,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359090216] [2023-08-03 22:11:12,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:12,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:11:12,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:11:12,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:11:12,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 521 [2023-08-03 22:11:12,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 188 transitions, 2072 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) [2023-08-03 22:11:12,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:12,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 521 [2023-08-03 22:11:12,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:13,099 INFO L124 PetriNetUnfolderBase]: 928/2432 cut-off events. [2023-08-03 22:11:13,099 INFO L125 PetriNetUnfolderBase]: For 11810/11856 co-relation queries the response was YES. [2023-08-03 22:11:13,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11600 conditions, 2432 events. 928/2432 cut-off events. For 11810/11856 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 17649 event pairs, 419 based on Foata normal form. 280/2692 useless extension candidates. Maximal degree in co-relation 10818. Up to 1804 conditions per place. [2023-08-03 22:11:13,111 INFO L140 encePairwiseOnDemand]: 514/521 looper letters, 112 selfloop transitions, 12 changer transitions 31/183 dead transitions. [2023-08-03 22:11:13,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 183 transitions, 2332 flow [2023-08-03 22:11:13,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:11:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:11:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 910 transitions. [2023-08-03 22:11:13,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666026871401153 [2023-08-03 22:11:13,112 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 910 transitions. [2023-08-03 22:11:13,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 910 transitions. [2023-08-03 22:11:13,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:13,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 910 transitions. [2023-08-03 22:11:13,113 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) [2023-08-03 22:11:13,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:13,115 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:13,115 INFO L175 Difference]: Start difference. First operand has 156 places, 188 transitions, 2072 flow. Second operand 4 states and 910 transitions. [2023-08-03 22:11:13,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 183 transitions, 2332 flow [2023-08-03 22:11:13,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 183 transitions, 2319 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 22:11:13,150 INFO L231 Difference]: Finished difference. Result has 158 places, 131 transitions, 1412 flow [2023-08-03 22:11:13,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1412, PETRI_PLACES=158, PETRI_TRANSITIONS=131} [2023-08-03 22:11:13,150 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 105 predicate places. [2023-08-03 22:11:13,150 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 131 transitions, 1412 flow [2023-08-03 22:11:13,151 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) [2023-08-03 22:11:13,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:13,151 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:11:13,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-03 22:11:13,151 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)] === [2023-08-03 22:11:13,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:13,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1292873928, now seen corresponding path program 3 times [2023-08-03 22:11:13,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:13,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285644449] [2023-08-03 22:11:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:13,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:11:13,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:13,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285644449] [2023-08-03 22:11:13,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285644449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:13,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:13,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:11:13,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462648216] [2023-08-03 22:11:13,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:13,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:11:13,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:13,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:11:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:11:13,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 521 [2023-08-03 22:11:13,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 131 transitions, 1412 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) [2023-08-03 22:11:13,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:13,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 521 [2023-08-03 22:11:13,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:13,611 INFO L124 PetriNetUnfolderBase]: 514/1405 cut-off events. [2023-08-03 22:11:13,611 INFO L125 PetriNetUnfolderBase]: For 5148/5160 co-relation queries the response was YES. [2023-08-03 22:11:13,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6242 conditions, 1405 events. 514/1405 cut-off events. For 5148/5160 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8635 event pairs, 266 based on Foata normal form. 8/1405 useless extension candidates. Maximal degree in co-relation 6127. Up to 746 conditions per place. [2023-08-03 22:11:13,617 INFO L140 encePairwiseOnDemand]: 511/521 looper letters, 69 selfloop transitions, 19 changer transitions 8/110 dead transitions. [2023-08-03 22:11:13,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 110 transitions, 1164 flow [2023-08-03 22:11:13,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:11:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:11:13,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 910 transitions. [2023-08-03 22:11:13,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666026871401153 [2023-08-03 22:11:13,619 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 910 transitions. [2023-08-03 22:11:13,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 910 transitions. [2023-08-03 22:11:13,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:13,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 910 transitions. [2023-08-03 22:11:13,620 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) [2023-08-03 22:11:13,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:13,622 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:13,622 INFO L175 Difference]: Start difference. First operand has 158 places, 131 transitions, 1412 flow. Second operand 4 states and 910 transitions. [2023-08-03 22:11:13,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 110 transitions, 1164 flow [2023-08-03 22:11:13,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 110 transitions, 988 flow, removed 17 selfloop flow, removed 30 redundant places. [2023-08-03 22:11:13,634 INFO L231 Difference]: Finished difference. Result has 119 places, 90 transitions, 713 flow [2023-08-03 22:11:13,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=713, PETRI_PLACES=119, PETRI_TRANSITIONS=90} [2023-08-03 22:11:13,635 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2023-08-03 22:11:13,635 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 90 transitions, 713 flow [2023-08-03 22:11:13,635 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) [2023-08-03 22:11:13,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:13,635 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:11:13,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-03 22:11:13,635 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)] === [2023-08-03 22:11:13,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:13,636 INFO L85 PathProgramCache]: Analyzing trace with hash 610439535, now seen corresponding path program 1 times [2023-08-03 22:11:13,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:13,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584696226] [2023-08-03 22:11:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:13,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:11:13,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:13,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584696226] [2023-08-03 22:11:13,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584696226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:13,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:13,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:11:13,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341588195] [2023-08-03 22:11:13,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:13,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:11:13,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:13,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:11:13,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:11:13,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 521 [2023-08-03 22:11:13,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 90 transitions, 713 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) [2023-08-03 22:11:13,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:13,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 521 [2023-08-03 22:11:13,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:13,987 INFO L124 PetriNetUnfolderBase]: 460/1249 cut-off events. [2023-08-03 22:11:13,988 INFO L125 PetriNetUnfolderBase]: For 2605/2605 co-relation queries the response was YES. [2023-08-03 22:11:13,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5063 conditions, 1249 events. 460/1249 cut-off events. For 2605/2605 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7329 event pairs, 305 based on Foata normal form. 1/1246 useless extension candidates. Maximal degree in co-relation 4437. Up to 707 conditions per place. [2023-08-03 22:11:13,994 INFO L140 encePairwiseOnDemand]: 515/521 looper letters, 97 selfloop transitions, 9 changer transitions 10/131 dead transitions. [2023-08-03 22:11:13,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 131 transitions, 1214 flow [2023-08-03 22:11:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:11:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:11:13,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 951 transitions. [2023-08-03 22:11:13,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45633397312859886 [2023-08-03 22:11:13,996 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 951 transitions. [2023-08-03 22:11:13,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 951 transitions. [2023-08-03 22:11:13,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:13,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 951 transitions. [2023-08-03 22:11:13,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:13,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:13,999 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:14,000 INFO L175 Difference]: Start difference. First operand has 119 places, 90 transitions, 713 flow. Second operand 4 states and 951 transitions. [2023-08-03 22:11:14,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 131 transitions, 1214 flow [2023-08-03 22:11:14,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 131 transitions, 1190 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-03 22:11:14,009 INFO L231 Difference]: Finished difference. Result has 117 places, 86 transitions, 666 flow [2023-08-03 22:11:14,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=666, PETRI_PLACES=117, PETRI_TRANSITIONS=86} [2023-08-03 22:11:14,010 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2023-08-03 22:11:14,010 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 86 transitions, 666 flow [2023-08-03 22:11:14,011 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) [2023-08-03 22:11:14,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:14,011 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:11:14,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-03 22:11:14,011 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-03 22:11:14,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:14,012 INFO L85 PathProgramCache]: Analyzing trace with hash -517587869, now seen corresponding path program 1 times [2023-08-03 22:11:14,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:14,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666756804] [2023-08-03 22:11:14,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:14,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:11:14,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:14,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666756804] [2023-08-03 22:11:14,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666756804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:14,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:14,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:11:14,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697188285] [2023-08-03 22:11:14,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:14,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:11:14,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:14,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:11:14,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:11:14,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 521 [2023-08-03 22:11:14,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 86 transitions, 666 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) [2023-08-03 22:11:14,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:14,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 521 [2023-08-03 22:11:14,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:14,323 INFO L124 PetriNetUnfolderBase]: 404/1024 cut-off events. [2023-08-03 22:11:14,323 INFO L125 PetriNetUnfolderBase]: For 2172/2172 co-relation queries the response was YES. [2023-08-03 22:11:14,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4096 conditions, 1024 events. 404/1024 cut-off events. For 2172/2172 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5557 event pairs, 310 based on Foata normal form. 10/1032 useless extension candidates. Maximal degree in co-relation 3689. Up to 731 conditions per place. [2023-08-03 22:11:14,327 INFO L140 encePairwiseOnDemand]: 517/521 looper letters, 52 selfloop transitions, 3 changer transitions 48/106 dead transitions. [2023-08-03 22:11:14,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 106 transitions, 996 flow [2023-08-03 22:11:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:11:14,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:11:14,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 937 transitions. [2023-08-03 22:11:14,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44961612284069097 [2023-08-03 22:11:14,329 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 937 transitions. [2023-08-03 22:11:14,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 937 transitions. [2023-08-03 22:11:14,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:14,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 937 transitions. [2023-08-03 22:11:14,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 234.25) internal successors, (937), 4 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:14,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:14,332 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:14,332 INFO L175 Difference]: Start difference. First operand has 117 places, 86 transitions, 666 flow. Second operand 4 states and 937 transitions. [2023-08-03 22:11:14,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 106 transitions, 996 flow [2023-08-03 22:11:14,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 106 transitions, 981 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 22:11:14,339 INFO L231 Difference]: Finished difference. Result has 116 places, 46 transitions, 335 flow [2023-08-03 22:11:14,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=335, PETRI_PLACES=116, PETRI_TRANSITIONS=46} [2023-08-03 22:11:14,339 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 63 predicate places. [2023-08-03 22:11:14,339 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 46 transitions, 335 flow [2023-08-03 22:11:14,340 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) [2023-08-03 22:11:14,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:11:14,340 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] [2023-08-03 22:11:14,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-03 22:11:14,340 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-03 22:11:14,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:11:14,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1373295439, now seen corresponding path program 1 times [2023-08-03 22:11:14,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:11:14,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940264966] [2023-08-03 22:11:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:11:14,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:11:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:11:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:11:14,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:11:14,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940264966] [2023-08-03 22:11:14,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940264966] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:11:14,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:11:14,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 22:11:14,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129581040] [2023-08-03 22:11:14,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:11:14,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 22:11:14,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:11:14,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 22:11:14,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:11:14,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 521 [2023-08-03 22:11:14,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 46 transitions, 335 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) [2023-08-03 22:11:14,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:11:14,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 521 [2023-08-03 22:11:14,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:11:14,700 INFO L124 PetriNetUnfolderBase]: 76/223 cut-off events. [2023-08-03 22:11:14,700 INFO L125 PetriNetUnfolderBase]: For 656/656 co-relation queries the response was YES. [2023-08-03 22:11:14,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 223 events. 76/223 cut-off events. For 656/656 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 878 event pairs, 53 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 994. Up to 114 conditions per place. [2023-08-03 22:11:14,700 INFO L140 encePairwiseOnDemand]: 515/521 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2023-08-03 22:11:14,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 59 transitions, 509 flow [2023-08-03 22:11:14,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:11:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:11:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 897 transitions. [2023-08-03 22:11:14,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43042226487523993 [2023-08-03 22:11:14,702 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 897 transitions. [2023-08-03 22:11:14,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 897 transitions. [2023-08-03 22:11:14,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:11:14,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 897 transitions. [2023-08-03 22:11:14,702 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) [2023-08-03 22:11:14,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:14,704 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 521.0) internal successors, (2605), 5 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:11:14,704 INFO L175 Difference]: Start difference. First operand has 116 places, 46 transitions, 335 flow. Second operand 4 states and 897 transitions. [2023-08-03 22:11:14,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 59 transitions, 509 flow [2023-08-03 22:11:14,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 59 transitions, 395 flow, removed 8 selfloop flow, removed 24 redundant places. [2023-08-03 22:11:14,705 INFO L231 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2023-08-03 22:11:14,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=521, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=75, 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=78, PETRI_TRANSITIONS=0} [2023-08-03 22:11:14,706 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2023-08-03 22:11:14,706 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2023-08-03 22:11:14,706 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) [2023-08-03 22:11:14,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-08-03 22:11:14,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-08-03 22:11:14,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-08-03 22:11:14,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-08-03 22:11:14,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2023-08-03 22:11:14,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-08-03 22:11:14,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-08-03 22:11:14,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-08-03 22:11:14,707 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-08-03 22:11:14,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-03 22:11:14,707 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:11:14,708 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (2/2) [2023-08-03 22:11:14,710 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 22:11:14,710 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 22:11:14,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 10:11:14 BasicIcfg [2023-08-03 22:11:14,714 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 22:11:14,714 INFO L158 Benchmark]: Toolchain (without parser) took 42382.78ms. Allocated memory was 327.2MB in the beginning and 5.9GB in the end (delta: 5.6GB). Free memory was 278.3MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 934.5MB. Max. memory is 16.0GB. [2023-08-03 22:11:14,714 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 327.2MB. Free memory is still 279.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:11:14,714 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.00ms. Allocated memory is still 327.2MB. Free memory was 278.3MB in the beginning and 258.0MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 22:11:14,715 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.49ms. Allocated memory is still 327.2MB. Free memory was 258.0MB in the beginning and 255.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:11:14,715 INFO L158 Benchmark]: Boogie Preprocessor took 30.68ms. Allocated memory is still 327.2MB. Free memory was 255.7MB in the beginning and 253.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:11:14,715 INFO L158 Benchmark]: RCFGBuilder took 458.46ms. Allocated memory is still 327.2MB. Free memory was 253.6MB in the beginning and 235.9MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 22:11:14,715 INFO L158 Benchmark]: TraceAbstraction took 41426.12ms. Allocated memory was 432.0MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 398.6MB in the beginning and 4.9GB in the end (delta: -4.5GB). Peak memory consumption was 947.9MB. Max. memory is 16.0GB. [2023-08-03 22:11:14,716 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 327.2MB. Free memory is still 279.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 387.00ms. Allocated memory is still 327.2MB. Free memory was 278.3MB in the beginning and 258.0MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.49ms. Allocated memory is still 327.2MB. Free memory was 258.0MB in the beginning and 255.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.68ms. Allocated memory is still 327.2MB. Free memory was 255.7MB in the beginning and 253.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 458.46ms. Allocated memory is still 327.2MB. Free memory was 253.6MB in the beginning and 235.9MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 41426.12ms. Allocated memory was 432.0MB in the beginning and 5.9GB in the end (delta: 5.5GB). Free memory was 398.6MB in the beginning and 4.9GB in the end (delta: -4.5GB). Peak memory consumption was 947.9MB. 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: 4.5s, 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: 5.6s, 239 PlacesBefore, 53 PlacesAfterwards, 249 TransitionsBefore, 52 TransitionsAfterwards, 28424 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 168 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 52 ConcurrentYvCompositions, 11 ChoiceCompositions, 270 TotalNumberOfCompositions, 44145 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28383, independent: 27961, independent conditional: 0, independent unconditional: 27961, dependent: 422, dependent conditional: 0, dependent unconditional: 422, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 16289, independent: 16187, independent conditional: 0, independent unconditional: 16187, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 28383, independent: 11774, independent conditional: 0, independent unconditional: 11774, dependent: 320, dependent conditional: 0, dependent unconditional: 320, unknown: 16289, unknown conditional: 0, unknown unconditional: 16289] , Statistics on independence cache: Total cache size (in pairs): 369, Positive cache size: 332, Positive conditional cache size: 0, Positive unconditional cache size: 332, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 239 PlacesBefore, 53 PlacesAfterwards, 249 TransitionsBefore, 52 TransitionsAfterwards, 28424 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 167 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 54 ConcurrentYvCompositions, 11 ChoiceCompositions, 271 TotalNumberOfCompositions, 41287 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26766, independent: 26423, independent conditional: 0, independent unconditional: 26423, dependent: 343, dependent conditional: 0, dependent unconditional: 343, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 16230, independent: 16133, independent conditional: 0, independent unconditional: 16133, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 26766, independent: 10290, independent conditional: 0, independent unconditional: 10290, dependent: 246, dependent conditional: 0, dependent unconditional: 246, unknown: 16230, unknown conditional: 0, unknown unconditional: 16230] , Statistics on independence cache: Total cache size (in pairs): 325, Positive cache size: 288, Positive conditional cache size: 0, Positive unconditional cache size: 288, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, 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 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: 4.8s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, 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: 6.9s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 0.2s 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=116occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.2s 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 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: 29.5s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 21.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4102 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3400 mSDsluCounter, 964 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 842 mSDsCounter, 278 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7178 IncrementalHoareTripleChecker+Invalid, 7456 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 278 mSolverCounterUnsat, 122 mSDtfsCounter, 7178 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2072occurred in iteration=16, InterpolantAutomatonStates: 143, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 428 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 418 ConstructedInterpolants, 0 QuantifiedInterpolants, 1883 SizeOfPredicates, 0 NumberOfNonLiveVariables, 179 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 23 InterpolantComputations, 20 PerfectInterpolantSequences, 90/93 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! [2023-08-03 22:11:14,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...