/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_13-privatized_25-struct_nr_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 22:05:51,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 22:05:51,359 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 22:05:51,365 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 22:05:51,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 22:05:51,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 22:05:51,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 22:05:51,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 22:05:51,398 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 22:05:51,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 22:05:51,402 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 22:05:51,402 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 22:05:51,403 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 22:05:51,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 22:05:51,404 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 22:05:51,405 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 22:05:51,405 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 22:05:51,405 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 22:05:51,405 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 22:05:51,405 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 22:05:51,406 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 22:05:51,406 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 22:05:51,406 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 22:05:51,406 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 22:05:51,406 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 22:05:51,408 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 22:05:51,408 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 22:05:51,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 22:05:51,408 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 22:05:51,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 22:05:51,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:05:51,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 22:05:51,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 22:05:51,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 22:05:51,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 22:05:51,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 22:05:51,410 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 22:05:51,410 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 22:05:51,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 22:05:51,411 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 22:05:51,411 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 22:05:51,411 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 22:05:51,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 22:05:51,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 22:05:51,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 22:05:51,641 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 22:05:51,642 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 22:05:51,643 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_25-struct_nr_true_bound2.i [2023-08-03 22:05:52,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 22:05:53,008 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 22:05:53,009 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_25-struct_nr_true_bound2.i [2023-08-03 22:05:53,030 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92c57f0f2/92b7303d653e4d78bd28e5190f843f8f/FLAGc3e0f1421 [2023-08-03 22:05:53,040 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92c57f0f2/92b7303d653e4d78bd28e5190f843f8f [2023-08-03 22:05:53,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 22:05:53,043 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 22:05:53,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 22:05:53,044 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 22:05:53,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 22:05:53,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:05:53" (1/1) ... [2023-08-03 22:05:53,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4debb69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53, skipping insertion in model container [2023-08-03 22:05:53,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:05:53" (1/1) ... [2023-08-03 22:05:53,079 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 22:05:53,194 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_13-privatized_25-struct_nr_true_bound2.i[1086,1099] [2023-08-03 22:05:53,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:05:53,357 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 22:05:53,368 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_13-privatized_25-struct_nr_true_bound2.i[1086,1099] [2023-08-03 22:05:53,388 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 22:05:53,389 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 22:05:53,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:05:53,447 INFO L206 MainTranslator]: Completed translation [2023-08-03 22:05:53,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53 WrapperNode [2023-08-03 22:05:53,448 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 22:05:53,449 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 22:05:53,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 22:05:53,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 22:05:53,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53" (1/1) ... [2023-08-03 22:05:53,480 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53" (1/1) ... [2023-08-03 22:05:53,502 INFO L138 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 92 [2023-08-03 22:05:53,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 22:05:53,503 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 22:05:53,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 22:05:53,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 22:05:53,511 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53" (1/1) ... [2023-08-03 22:05:53,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53" (1/1) ... [2023-08-03 22:05:53,513 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53" (1/1) ... [2023-08-03 22:05:53,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53" (1/1) ... [2023-08-03 22:05:53,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53" (1/1) ... [2023-08-03 22:05:53,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53" (1/1) ... [2023-08-03 22:05:53,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53" (1/1) ... [2023-08-03 22:05:53,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53" (1/1) ... [2023-08-03 22:05:53,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 22:05:53,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 22:05:53,525 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 22:05:53,525 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 22:05:53,526 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53" (1/1) ... [2023-08-03 22:05:53,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:05:53,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:05:53,553 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 22:05:53,571 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 22:05:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 22:05:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 22:05:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 22:05:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 22:05:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 22:05:53,595 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 22:05:53,596 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 22:05:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 22:05:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 22:05:53,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 22:05:53,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 22:05:53,599 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 22:05:53,734 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 22:05:53,736 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 22:05:53,970 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 22:05:53,975 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 22:05:53,976 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 22:05:53,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:05:53 BoogieIcfgContainer [2023-08-03 22:05:53,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 22:05:53,980 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 22:05:53,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 22:05:53,982 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 22:05:53,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 10:05:53" (1/3) ... [2023-08-03 22:05:53,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5cdc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:05:53, skipping insertion in model container [2023-08-03 22:05:53,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:53" (2/3) ... [2023-08-03 22:05:53,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5cdc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:05:53, skipping insertion in model container [2023-08-03 22:05:53,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:05:53" (3/3) ... [2023-08-03 22:05:53,985 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_25-struct_nr_true_bound2.i [2023-08-03 22:05:53,998 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 22:05:54,004 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 22:05:54,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-03 22:05:54,005 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 22:05:54,044 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 22:05:54,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 98 transitions, 204 flow [2023-08-03 22:05:54,124 INFO L124 PetriNetUnfolderBase]: 10/131 cut-off events. [2023-08-03 22:05:54,124 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 22:05:54,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 131 events. 10/131 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 252 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2023-08-03 22:05:54,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 98 transitions, 204 flow [2023-08-03 22:05:54,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 92 transitions, 189 flow [2023-08-03 22:05:54,136 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:05:54,144 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 92 transitions, 189 flow [2023-08-03 22:05:54,146 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 92 transitions, 189 flow [2023-08-03 22:05:54,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 92 transitions, 189 flow [2023-08-03 22:05:54,170 INFO L124 PetriNetUnfolderBase]: 9/125 cut-off events. [2023-08-03 22:05:54,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:05:54,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 125 events. 9/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 245 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2023-08-03 22:05:54,173 INFO L119 LiptonReduction]: Number of co-enabled transitions 2028 [2023-08-03 22:05:56,280 INFO L134 LiptonReduction]: Checked pairs total: 4191 [2023-08-03 22:05:56,281 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-03 22:05:56,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:05:56,297 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;@4e69cbff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:05:56,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:05:56,303 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:05:56,303 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2023-08-03 22:05:56,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:05:56,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:05:56,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 22:05:56,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:05:56,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:05:56,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1723435762, now seen corresponding path program 1 times [2023-08-03 22:05:56,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:05:56,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792483589] [2023-08-03 22:05:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:56,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:05:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:05:56,426 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:05:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:05:56,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:05:56,488 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:05:56,490 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:05:56,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 22:05:56,491 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:05:56,494 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 22:05:56,494 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 22:05:56,494 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 22:05:56,515 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 22:05:56,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 126 transitions, 270 flow [2023-08-03 22:05:56,582 INFO L124 PetriNetUnfolderBase]: 18/216 cut-off events. [2023-08-03 22:05:56,583 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 22:05:56,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 216 events. 18/216 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 578 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 133. Up to 8 conditions per place. [2023-08-03 22:05:56,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 126 transitions, 270 flow [2023-08-03 22:05:56,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 125 transitions, 268 flow [2023-08-03 22:05:56,590 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:05:56,591 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 125 transitions, 268 flow [2023-08-03 22:05:56,591 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 125 transitions, 268 flow [2023-08-03 22:05:56,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 125 transitions, 268 flow [2023-08-03 22:05:56,619 INFO L124 PetriNetUnfolderBase]: 18/215 cut-off events. [2023-08-03 22:05:56,620 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 22:05:56,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 215 events. 18/215 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 573 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 132. Up to 8 conditions per place. [2023-08-03 22:05:56,626 INFO L119 LiptonReduction]: Number of co-enabled transitions 5980 [2023-08-03 22:05:58,513 INFO L134 LiptonReduction]: Checked pairs total: 13259 [2023-08-03 22:05:58,513 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-03 22:05:58,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:05:58,516 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;@4e69cbff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:05:58,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:05:58,524 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:05:58,524 INFO L124 PetriNetUnfolderBase]: 4/51 cut-off events. [2023-08-03 22:05:58,524 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:05:58,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:05:58,524 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 22:05:58,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:05:58,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:05:58,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1133345318, now seen corresponding path program 1 times [2023-08-03 22:05:58,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:05:58,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468751873] [2023-08-03 22:05:58,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:58,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:05:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:05:58,718 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 22:05:58,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:05:58,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468751873] [2023-08-03 22:05:58,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468751873] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:05:58,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336412490] [2023-08-03 22:05:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:58,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:05:58,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:05:58,740 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 22:05:58,750 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 22:05:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:05:58,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 22:05:58,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:05:58,866 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 22:05:58,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 22:05:58,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336412490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:05:58,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 22:05:58,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 22:05:58,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060718593] [2023-08-03 22:05:58,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:05:58,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:05:58,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:05:58,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:05:58,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:05:58,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 242 [2023-08-03 22:05:58,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:58,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:05:58,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 242 [2023-08-03 22:05:58,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:05:59,228 INFO L124 PetriNetUnfolderBase]: 1604/2677 cut-off events. [2023-08-03 22:05:59,228 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-03 22:05:59,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5368 conditions, 2677 events. 1604/2677 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15731 event pairs, 0 based on Foata normal form. 110/2051 useless extension candidates. Maximal degree in co-relation 934. Up to 2458 conditions per place. [2023-08-03 22:05:59,234 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2023-08-03 22:05:59,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 262 flow [2023-08-03 22:05:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:05:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:05:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2023-08-03 22:05:59,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809917355371901 [2023-08-03 22:05:59,250 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 582 transitions. [2023-08-03 22:05:59,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 582 transitions. [2023-08-03 22:05:59,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:05:59,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 582 transitions. [2023-08-03 22:05:59,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:59,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:59,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:59,269 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 104 flow. Second operand 5 states and 582 transitions. [2023-08-03 22:05:59,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 262 flow [2023-08-03 22:05:59,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 64 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 22:05:59,277 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-03 22:05:59,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-03 22:05:59,287 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-08-03 22:05:59,288 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-03 22:05:59,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:59,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:05:59,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 22:05:59,494 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 22:05:59,494 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:05:59,495 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 22:05:59,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 126 transitions, 270 flow [2023-08-03 22:05:59,514 INFO L124 PetriNetUnfolderBase]: 18/216 cut-off events. [2023-08-03 22:05:59,514 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 22:05:59,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 216 events. 18/216 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 578 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 133. Up to 8 conditions per place. [2023-08-03 22:05:59,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 126 transitions, 270 flow [2023-08-03 22:05:59,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 126 transitions, 270 flow [2023-08-03 22:05:59,516 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:05:59,516 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 126 transitions, 270 flow [2023-08-03 22:05:59,516 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 126 transitions, 270 flow [2023-08-03 22:05:59,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 126 transitions, 270 flow [2023-08-03 22:05:59,531 INFO L124 PetriNetUnfolderBase]: 18/216 cut-off events. [2023-08-03 22:05:59,531 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 22:05:59,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 216 events. 18/216 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 578 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 133. Up to 8 conditions per place. [2023-08-03 22:05:59,535 INFO L119 LiptonReduction]: Number of co-enabled transitions 5980 [2023-08-03 22:06:01,456 INFO L134 LiptonReduction]: Checked pairs total: 13137 [2023-08-03 22:06:01,457 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-08-03 22:06:01,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 22:06:01,459 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;@4e69cbff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:06:01,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-03 22:06:01,460 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:06:01,460 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-03 22:06:01,460 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:06:01,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:01,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-03 22:06:01,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:01,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash 766, now seen corresponding path program 1 times [2023-08-03 22:06:01,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:01,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099874156] [2023-08-03 22:06:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:01,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:01,468 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 22:06:01,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:01,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099874156] [2023-08-03 22:06:01,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099874156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:06:01,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:06:01,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-03 22:06:01,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643539342] [2023-08-03 22:06:01,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:06:01,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 22:06:01,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:01,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 22:06:01,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 22:06:01,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 246 [2023-08-03 22:06:01,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 108.5) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:01,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:01,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 246 [2023-08-03 22:06:01,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:01,684 INFO L124 PetriNetUnfolderBase]: 1731/2994 cut-off events. [2023-08-03 22:06:01,685 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-03 22:06:01,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5896 conditions, 2994 events. 1731/2994 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16608 event pairs, 1720 based on Foata normal form. 118/2261 useless extension candidates. Maximal degree in co-relation 2309. Up to 2839 conditions per place. [2023-08-03 22:06:01,700 INFO L140 encePairwiseOnDemand]: 242/246 looper letters, 33 selfloop transitions, 0 changer transitions 0/38 dead transitions. [2023-08-03 22:06:01,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 160 flow [2023-08-03 22:06:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 22:06:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 22:06:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 253 transitions. [2023-08-03 22:06:01,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142276422764228 [2023-08-03 22:06:01,702 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 253 transitions. [2023-08-03 22:06:01,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 253 transitions. [2023-08-03 22:06:01,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:01,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 253 transitions. [2023-08-03 22:06:01,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.5) internal successors, (253), 2 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:01,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:01,705 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:01,705 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 106 flow. Second operand 2 states and 253 transitions. [2023-08-03 22:06:01,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 160 flow [2023-08-03 22:06:01,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:06:01,710 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 94 flow [2023-08-03 22:06:01,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-03 22:06:01,711 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2023-08-03 22:06:01,712 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 94 flow [2023-08-03 22:06:01,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 108.5) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:01,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:01,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 22:06:01,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 22:06:01,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:01,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash 730903146, now seen corresponding path program 1 times [2023-08-03 22:06:01,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:01,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98306188] [2023-08-03 22:06:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:01,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:01,746 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 22:06:01,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:01,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98306188] [2023-08-03 22:06:01,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98306188] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:06:01,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:06:01,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:06:01,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271632004] [2023-08-03 22:06:01,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:06:01,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:06:01,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:01,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:06:01,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:06:01,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 246 [2023-08-03 22:06:01,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:01,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:01,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 246 [2023-08-03 22:06:01,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:01,955 INFO L124 PetriNetUnfolderBase]: 1730/2949 cut-off events. [2023-08-03 22:06:01,956 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-03 22:06:01,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5850 conditions, 2949 events. 1730/2949 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 16359 event pairs, 784 based on Foata normal form. 0/2092 useless extension candidates. Maximal degree in co-relation 5845. Up to 2820 conditions per place. [2023-08-03 22:06:01,968 INFO L140 encePairwiseOnDemand]: 243/246 looper letters, 41 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-03 22:06:01,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 200 flow [2023-08-03 22:06:01,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:06:01,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:06:01,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-08-03 22:06:01,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823848238482385 [2023-08-03 22:06:01,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-08-03 22:06:01,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-08-03 22:06:01,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:01,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-08-03 22:06:01,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:01,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:01,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:01,974 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 94 flow. Second operand 3 states and 356 transitions. [2023-08-03 22:06:01,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 200 flow [2023-08-03 22:06:01,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 200 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:06:01,975 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 106 flow [2023-08-03 22:06:01,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-03 22:06:01,976 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-08-03 22:06:01,976 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 106 flow [2023-08-03 22:06:01,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:01,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:01,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 22:06:01,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 22:06:01,977 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:01,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash 731394483, now seen corresponding path program 1 times [2023-08-03 22:06:01,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:01,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690070688] [2023-08-03 22:06:01,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:01,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:02,042 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 22:06:02,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:02,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690070688] [2023-08-03 22:06:02,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690070688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:06:02,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:06:02,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 22:06:02,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668720841] [2023-08-03 22:06:02,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:06:02,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:06:02,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:02,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:06:02,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:06:02,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 246 [2023-08-03 22:06:02,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:02,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:02,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 246 [2023-08-03 22:06:02,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:02,319 INFO L124 PetriNetUnfolderBase]: 1958/3330 cut-off events. [2023-08-03 22:06:02,320 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2023-08-03 22:06:02,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6765 conditions, 3330 events. 1958/3330 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18646 event pairs, 1049 based on Foata normal form. 0/2553 useless extension candidates. Maximal degree in co-relation 6758. Up to 2874 conditions per place. [2023-08-03 22:06:02,333 INFO L140 encePairwiseOnDemand]: 236/246 looper letters, 53 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2023-08-03 22:06:02,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 291 flow [2023-08-03 22:06:02,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:06:02,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:06:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2023-08-03 22:06:02,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4932249322493225 [2023-08-03 22:06:02,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2023-08-03 22:06:02,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2023-08-03 22:06:02,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:02,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2023-08-03 22:06:02,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:02,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:02,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:02,339 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 106 flow. Second operand 3 states and 364 transitions. [2023-08-03 22:06:02,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 291 flow [2023-08-03 22:06:02,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:06:02,342 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 162 flow [2023-08-03 22:06:02,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-08-03 22:06:02,346 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2023-08-03 22:06:02,346 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 162 flow [2023-08-03 22:06:02,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:02,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:02,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:06:02,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 22:06:02,347 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:02,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:02,347 INFO L85 PathProgramCache]: Analyzing trace with hash 603963709, now seen corresponding path program 1 times [2023-08-03 22:06:02,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:02,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423095271] [2023-08-03 22:06:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:02,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:02,431 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 22:06:02,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:02,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423095271] [2023-08-03 22:06:02,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423095271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:06:02,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:06:02,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:06:02,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823169899] [2023-08-03 22:06:02,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:06:02,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:06:02,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:02,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:06:02,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:06:02,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 246 [2023-08-03 22:06:02,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:02,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:02,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 246 [2023-08-03 22:06:02,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:02,813 INFO L124 PetriNetUnfolderBase]: 2546/4320 cut-off events. [2023-08-03 22:06:02,813 INFO L125 PetriNetUnfolderBase]: For 1098/1098 co-relation queries the response was YES. [2023-08-03 22:06:02,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10241 conditions, 4320 events. 2546/4320 cut-off events. For 1098/1098 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 26425 event pairs, 822 based on Foata normal form. 26/3839 useless extension candidates. Maximal degree in co-relation 10233. Up to 1612 conditions per place. [2023-08-03 22:06:02,839 INFO L140 encePairwiseOnDemand]: 237/246 looper letters, 95 selfloop transitions, 18 changer transitions 1/118 dead transitions. [2023-08-03 22:06:02,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 118 transitions, 611 flow [2023-08-03 22:06:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:06:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:06:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 601 transitions. [2023-08-03 22:06:02,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4886178861788618 [2023-08-03 22:06:02,841 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 601 transitions. [2023-08-03 22:06:02,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 601 transitions. [2023-08-03 22:06:02,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:02,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 601 transitions. [2023-08-03 22:06:02,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:02,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:02,846 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:02,846 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 162 flow. Second operand 5 states and 601 transitions. [2023-08-03 22:06:02,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 118 transitions, 611 flow [2023-08-03 22:06:02,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 118 transitions, 593 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 22:06:02,856 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 283 flow [2023-08-03 22:06:02,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2023-08-03 22:06:02,857 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2023-08-03 22:06:02,857 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 283 flow [2023-08-03 22:06:02,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:02,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:02,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:06:02,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 22:06:02,858 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:02,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2121867557, now seen corresponding path program 1 times [2023-08-03 22:06:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:02,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218369860] [2023-08-03 22:06:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:02,904 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 22:06:02,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:02,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218369860] [2023-08-03 22:06:02,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218369860] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:06:02,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114560793] [2023-08-03 22:06:02,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:02,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:06:02,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:06:02,914 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 22:06:02,935 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 22:06:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:02,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 22:06:02,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:06:02,983 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 22:06:02,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:06:02,998 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 22:06:02,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114560793] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:06:02,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:06:02,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 22:06:02,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766238872] [2023-08-03 22:06:02,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:06:02,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:06:02,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:03,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:06:03,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:06:03,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 246 [2023-08-03 22:06:03,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 283 flow. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:03,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:03,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 246 [2023-08-03 22:06:03,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:03,378 INFO L124 PetriNetUnfolderBase]: 2321/3928 cut-off events. [2023-08-03 22:06:03,378 INFO L125 PetriNetUnfolderBase]: For 3994/4099 co-relation queries the response was YES. [2023-08-03 22:06:03,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11229 conditions, 3928 events. 2321/3928 cut-off events. For 3994/4099 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 23815 event pairs, 683 based on Foata normal form. 85/3616 useless extension candidates. Maximal degree in co-relation 11218. Up to 3418 conditions per place. [2023-08-03 22:06:03,401 INFO L140 encePairwiseOnDemand]: 242/246 looper letters, 79 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2023-08-03 22:06:03,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 90 transitions, 594 flow [2023-08-03 22:06:03,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:06:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:06:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2023-08-03 22:06:03,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766260162601626 [2023-08-03 22:06:03,403 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 469 transitions. [2023-08-03 22:06:03,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 469 transitions. [2023-08-03 22:06:03,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:03,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 469 transitions. [2023-08-03 22:06:03,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:03,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:03,407 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:03,407 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 283 flow. Second operand 4 states and 469 transitions. [2023-08-03 22:06:03,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 90 transitions, 594 flow [2023-08-03 22:06:03,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 90 transitions, 594 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:06:03,415 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 303 flow [2023-08-03 22:06:03,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=303, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2023-08-03 22:06:03,416 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2023-08-03 22:06:03,417 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 303 flow [2023-08-03 22:06:03,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:03,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:03,417 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:06:03,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 22:06:03,622 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,SelfDestructingSolverStorable6 [2023-08-03 22:06:03,622 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:03,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1476155885, now seen corresponding path program 1 times [2023-08-03 22:06:03,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:03,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884454399] [2023-08-03 22:06:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:03,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:06:03,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:03,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884454399] [2023-08-03 22:06:03,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884454399] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:06:03,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:06:03,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:06:03,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343491630] [2023-08-03 22:06:03,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:06:03,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:06:03,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:03,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:06:03,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:06:03,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 246 [2023-08-03 22:06:03,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:03,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:03,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 246 [2023-08-03 22:06:03,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:03,818 INFO L124 PetriNetUnfolderBase]: 183/505 cut-off events. [2023-08-03 22:06:03,818 INFO L125 PetriNetUnfolderBase]: For 595/595 co-relation queries the response was YES. [2023-08-03 22:06:03,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 505 events. 183/505 cut-off events. For 595/595 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2493 event pairs, 17 based on Foata normal form. 112/555 useless extension candidates. Maximal degree in co-relation 1468. Up to 373 conditions per place. [2023-08-03 22:06:03,820 INFO L140 encePairwiseOnDemand]: 240/246 looper letters, 42 selfloop transitions, 6 changer transitions 1/54 dead transitions. [2023-08-03 22:06:03,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 349 flow [2023-08-03 22:06:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:06:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:06:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-08-03 22:06:03,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46883468834688347 [2023-08-03 22:06:03,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-08-03 22:06:03,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-08-03 22:06:03,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:03,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-08-03 22:06:03,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:03,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:03,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:03,825 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 303 flow. Second operand 3 states and 346 transitions. [2023-08-03 22:06:03,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 349 flow [2023-08-03 22:06:03,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 313 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-03 22:06:03,828 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 178 flow [2023-08-03 22:06:03,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-08-03 22:06:03,829 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-08-03 22:06:03,830 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 178 flow [2023-08-03 22:06:03,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:03,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:03,830 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:06:03,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 22:06:03,830 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:03,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:03,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1747191097, now seen corresponding path program 1 times [2023-08-03 22:06:03,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:03,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308565595] [2023-08-03 22:06:03,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:03,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:03,877 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 22:06:03,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:03,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308565595] [2023-08-03 22:06:03,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308565595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:06:03,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:06:03,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:06:03,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828770482] [2023-08-03 22:06:03,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:06:03,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:06:03,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:06:03,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:06:03,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 246 [2023-08-03 22:06:03,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:03,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:03,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 246 [2023-08-03 22:06:03,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:04,021 INFO L124 PetriNetUnfolderBase]: 188/494 cut-off events. [2023-08-03 22:06:04,021 INFO L125 PetriNetUnfolderBase]: For 385/385 co-relation queries the response was YES. [2023-08-03 22:06:04,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 494 events. 188/494 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2234 event pairs, 78 based on Foata normal form. 16/461 useless extension candidates. Maximal degree in co-relation 1410. Up to 179 conditions per place. [2023-08-03 22:06:04,023 INFO L140 encePairwiseOnDemand]: 241/246 looper letters, 61 selfloop transitions, 9 changer transitions 4/77 dead transitions. [2023-08-03 22:06:04,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 464 flow [2023-08-03 22:06:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:06:04,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:06:04,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 561 transitions. [2023-08-03 22:06:04,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560975609756098 [2023-08-03 22:06:04,025 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 561 transitions. [2023-08-03 22:06:04,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 561 transitions. [2023-08-03 22:06:04,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:04,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 561 transitions. [2023-08-03 22:06:04,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.2) internal successors, (561), 5 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,029 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,029 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 178 flow. Second operand 5 states and 561 transitions. [2023-08-03 22:06:04,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 464 flow [2023-08-03 22:06:04,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:06:04,032 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 198 flow [2023-08-03 22:06:04,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2023-08-03 22:06:04,034 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2023-08-03 22:06:04,034 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 198 flow [2023-08-03 22:06:04,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:04,034 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:06:04,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 22:06:04,034 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:04,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:04,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1817860595, now seen corresponding path program 1 times [2023-08-03 22:06:04,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:04,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145924448] [2023-08-03 22:06:04,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:04,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:04,118 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 22:06:04,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:04,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145924448] [2023-08-03 22:06:04,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145924448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:06:04,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:06:04,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:06:04,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55595529] [2023-08-03 22:06:04,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:06:04,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:06:04,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:04,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:06:04,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:06:04,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 246 [2023-08-03 22:06:04,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:04,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 246 [2023-08-03 22:06:04,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:04,263 INFO L124 PetriNetUnfolderBase]: 176/474 cut-off events. [2023-08-03 22:06:04,264 INFO L125 PetriNetUnfolderBase]: For 473/473 co-relation queries the response was YES. [2023-08-03 22:06:04,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 474 events. 176/474 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2100 event pairs, 104 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 1375. Up to 373 conditions per place. [2023-08-03 22:06:04,265 INFO L140 encePairwiseOnDemand]: 238/246 looper letters, 47 selfloop transitions, 8 changer transitions 2/61 dead transitions. [2023-08-03 22:06:04,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 375 flow [2023-08-03 22:06:04,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:06:04,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:06:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 540 transitions. [2023-08-03 22:06:04,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2023-08-03 22:06:04,267 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 540 transitions. [2023-08-03 22:06:04,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 540 transitions. [2023-08-03 22:06:04,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:04,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 540 transitions. [2023-08-03 22:06:04,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,271 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 198 flow. Second operand 5 states and 540 transitions. [2023-08-03 22:06:04,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 375 flow [2023-08-03 22:06:04,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 61 transitions, 375 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:06:04,273 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 232 flow [2023-08-03 22:06:04,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-03 22:06:04,274 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 18 predicate places. [2023-08-03 22:06:04,274 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 232 flow [2023-08-03 22:06:04,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:04,274 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:06:04,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 22:06:04,275 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:04,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:04,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1458395297, now seen corresponding path program 1 times [2023-08-03 22:06:04,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:04,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450833525] [2023-08-03 22:06:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:04,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 22:06:04,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450833525] [2023-08-03 22:06:04,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450833525] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:06:04,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437265455] [2023-08-03 22:06:04,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:04,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:06:04,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:06:04,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:06:04,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 22:06:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:04,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-03 22:06:04,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:06:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 22:06:04,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:06:04,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 22:06:04,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437265455] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:06:04,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:06:04,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2023-08-03 22:06:04,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255961731] [2023-08-03 22:06:04,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:06:04,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:06:04,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:04,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:06:04,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:06:04,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 246 [2023-08-03 22:06:04,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:04,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 246 [2023-08-03 22:06:04,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:04,679 INFO L124 PetriNetUnfolderBase]: 192/530 cut-off events. [2023-08-03 22:06:04,679 INFO L125 PetriNetUnfolderBase]: For 596/596 co-relation queries the response was YES. [2023-08-03 22:06:04,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 530 events. 192/530 cut-off events. For 596/596 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2512 event pairs, 75 based on Foata normal form. 10/486 useless extension candidates. Maximal degree in co-relation 1584. Up to 198 conditions per place. [2023-08-03 22:06:04,681 INFO L140 encePairwiseOnDemand]: 239/246 looper letters, 64 selfloop transitions, 11 changer transitions 10/89 dead transitions. [2023-08-03 22:06:04,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 89 transitions, 584 flow [2023-08-03 22:06:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:06:04,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:06:04,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 572 transitions. [2023-08-03 22:06:04,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46504065040650405 [2023-08-03 22:06:04,683 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 572 transitions. [2023-08-03 22:06:04,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 572 transitions. [2023-08-03 22:06:04,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:04,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 572 transitions. [2023-08-03 22:06:04,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,687 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,687 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 232 flow. Second operand 5 states and 572 transitions. [2023-08-03 22:06:04,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 89 transitions, 584 flow [2023-08-03 22:06:04,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 584 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:06:04,690 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 270 flow [2023-08-03 22:06:04,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-08-03 22:06:04,690 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2023-08-03 22:06:04,690 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 270 flow [2023-08-03 22:06:04,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:04,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:04,691 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:06:04,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 22:06:04,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:06:04,897 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:04,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:04,897 INFO L85 PathProgramCache]: Analyzing trace with hash 140239076, now seen corresponding path program 1 times [2023-08-03 22:06:04,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:04,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131953895] [2023-08-03 22:06:04,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:04,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:05,003 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 22:06:05,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:05,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131953895] [2023-08-03 22:06:05,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131953895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:06:05,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:06:05,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:06:05,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813491690] [2023-08-03 22:06:05,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:06:05,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:06:05,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:05,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:06:05,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:06:05,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 246 [2023-08-03 22:06:05,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:05,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:05,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 246 [2023-08-03 22:06:05,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:05,171 INFO L124 PetriNetUnfolderBase]: 225/659 cut-off events. [2023-08-03 22:06:05,171 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2023-08-03 22:06:05,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 659 events. 225/659 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3457 event pairs, 154 based on Foata normal form. 3/588 useless extension candidates. Maximal degree in co-relation 2046. Up to 367 conditions per place. [2023-08-03 22:06:05,173 INFO L140 encePairwiseOnDemand]: 238/246 looper letters, 66 selfloop transitions, 8 changer transitions 18/95 dead transitions. [2023-08-03 22:06:05,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 679 flow [2023-08-03 22:06:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:06:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:06:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 577 transitions. [2023-08-03 22:06:05,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691056910569106 [2023-08-03 22:06:05,176 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 577 transitions. [2023-08-03 22:06:05,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 577 transitions. [2023-08-03 22:06:05,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:05,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 577 transitions. [2023-08-03 22:06:05,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.4) internal successors, (577), 5 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:05,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:05,179 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:05,179 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 270 flow. Second operand 5 states and 577 transitions. [2023-08-03 22:06:05,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 679 flow [2023-08-03 22:06:05,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 647 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 22:06:05,215 INFO L231 Difference]: Finished difference. Result has 72 places, 48 transitions, 294 flow [2023-08-03 22:06:05,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=72, PETRI_TRANSITIONS=48} [2023-08-03 22:06:05,216 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2023-08-03 22:06:05,216 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 48 transitions, 294 flow [2023-08-03 22:06:05,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:05,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:05,216 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:06:05,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 22:06:05,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:05,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:05,217 INFO L85 PathProgramCache]: Analyzing trace with hash -630091813, now seen corresponding path program 1 times [2023-08-03 22:06:05,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:05,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039901173] [2023-08-03 22:06:05,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:05,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:05,314 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 22:06:05,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:05,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039901173] [2023-08-03 22:06:05,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039901173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:06:05,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:06:05,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:06:05,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752950576] [2023-08-03 22:06:05,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:06:05,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 22:06:05,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:05,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 22:06:05,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:06:05,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 246 [2023-08-03 22:06:05,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 48 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 98.33333333333333) internal successors, (590), 6 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:05,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:05,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 246 [2023-08-03 22:06:05,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:05,479 INFO L124 PetriNetUnfolderBase]: 96/344 cut-off events. [2023-08-03 22:06:05,480 INFO L125 PetriNetUnfolderBase]: For 500/500 co-relation queries the response was YES. [2023-08-03 22:06:05,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 344 events. 96/344 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1476 event pairs, 57 based on Foata normal form. 6/316 useless extension candidates. Maximal degree in co-relation 1030. Up to 260 conditions per place. [2023-08-03 22:06:05,481 INFO L140 encePairwiseOnDemand]: 236/246 looper letters, 48 selfloop transitions, 10 changer transitions 0/61 dead transitions. [2023-08-03 22:06:05,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 61 transitions, 461 flow [2023-08-03 22:06:05,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 22:06:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 22:06:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 626 transitions. [2023-08-03 22:06:05,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4241192411924119 [2023-08-03 22:06:05,483 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 626 transitions. [2023-08-03 22:06:05,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 626 transitions. [2023-08-03 22:06:05,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:05,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 626 transitions. [2023-08-03 22:06:05,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.33333333333333) internal successors, (626), 6 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:05,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 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 22:06:05,487 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 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 22:06:05,487 INFO L175 Difference]: Start difference. First operand has 72 places, 48 transitions, 294 flow. Second operand 6 states and 626 transitions. [2023-08-03 22:06:05,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 61 transitions, 461 flow [2023-08-03 22:06:05,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 61 transitions, 444 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 22:06:05,490 INFO L231 Difference]: Finished difference. Result has 73 places, 49 transitions, 318 flow [2023-08-03 22:06:05,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=73, PETRI_TRANSITIONS=49} [2023-08-03 22:06:05,491 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2023-08-03 22:06:05,491 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 49 transitions, 318 flow [2023-08-03 22:06:05,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.33333333333333) internal successors, (590), 6 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:05,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:05,491 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:06:05,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 22:06:05,492 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:05,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:05,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1529766860, now seen corresponding path program 1 times [2023-08-03 22:06:05,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:05,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514701126] [2023-08-03 22:06:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:05,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:06:05,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:05,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514701126] [2023-08-03 22:06:05,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514701126] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:06:05,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363623011] [2023-08-03 22:06:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:05,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:06:05,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:06:05,587 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:06:05,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 22:06:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:05,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 22:06:05,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:06:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:06:05,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:06:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:06:05,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363623011] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:06:05,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:06:05,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-03 22:06:05,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492602491] [2023-08-03 22:06:05,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:06:05,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 22:06:05,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:05,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 22:06:05,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:06:05,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 246 [2023-08-03 22:06:05,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 49 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:05,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:05,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 246 [2023-08-03 22:06:05,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:05,972 INFO L124 PetriNetUnfolderBase]: 96/341 cut-off events. [2023-08-03 22:06:05,972 INFO L125 PetriNetUnfolderBase]: For 538/538 co-relation queries the response was YES. [2023-08-03 22:06:05,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 341 events. 96/341 cut-off events. For 538/538 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1462 event pairs, 62 based on Foata normal form. 2/309 useless extension candidates. Maximal degree in co-relation 1030. Up to 120 conditions per place. [2023-08-03 22:06:05,974 INFO L140 encePairwiseOnDemand]: 237/246 looper letters, 60 selfloop transitions, 12 changer transitions 8/83 dead transitions. [2023-08-03 22:06:05,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 83 transitions, 613 flow [2023-08-03 22:06:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 22:06:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 22:06:05,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 939 transitions. [2023-08-03 22:06:05,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4241192411924119 [2023-08-03 22:06:05,977 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 939 transitions. [2023-08-03 22:06:05,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 939 transitions. [2023-08-03 22:06:05,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:05,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 939 transitions. [2023-08-03 22:06:05,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.33333333333333) internal successors, (939), 9 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:05,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:05,984 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:05,984 INFO L175 Difference]: Start difference. First operand has 73 places, 49 transitions, 318 flow. Second operand 9 states and 939 transitions. [2023-08-03 22:06:05,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 83 transitions, 613 flow [2023-08-03 22:06:05,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 603 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 22:06:05,987 INFO L231 Difference]: Finished difference. Result has 80 places, 48 transitions, 313 flow [2023-08-03 22:06:05,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=313, PETRI_PLACES=80, PETRI_TRANSITIONS=48} [2023-08-03 22:06:05,989 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2023-08-03 22:06:05,989 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 48 transitions, 313 flow [2023-08-03 22:06:05,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.66666666666667) internal successors, (592), 6 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:05,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:05,989 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:06:05,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 22:06:06,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:06:06,195 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:06,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:06,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2030748276, now seen corresponding path program 1 times [2023-08-03 22:06:06,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:06,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447196874] [2023-08-03 22:06:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:06,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:06,291 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 22:06:06,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:06,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447196874] [2023-08-03 22:06:06,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447196874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:06:06,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:06:06,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:06:06,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822489172] [2023-08-03 22:06:06,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:06:06,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 22:06:06,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:06,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 22:06:06,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:06:06,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 246 [2023-08-03 22:06:06,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 48 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 98.33333333333333) internal successors, (590), 6 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:06,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:06,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 246 [2023-08-03 22:06:06,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:06,488 INFO L124 PetriNetUnfolderBase]: 90/301 cut-off events. [2023-08-03 22:06:06,488 INFO L125 PetriNetUnfolderBase]: For 553/553 co-relation queries the response was YES. [2023-08-03 22:06:06,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952 conditions, 301 events. 90/301 cut-off events. For 553/553 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1204 event pairs, 64 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 930. Up to 191 conditions per place. [2023-08-03 22:06:06,490 INFO L140 encePairwiseOnDemand]: 237/246 looper letters, 56 selfloop transitions, 11 changer transitions 2/72 dead transitions. [2023-08-03 22:06:06,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 72 transitions, 550 flow [2023-08-03 22:06:06,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 22:06:06,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 22:06:06,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 927 transitions. [2023-08-03 22:06:06,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186991869918699 [2023-08-03 22:06:06,493 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 927 transitions. [2023-08-03 22:06:06,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 927 transitions. [2023-08-03 22:06:06,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:06,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 927 transitions. [2023-08-03 22:06:06,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 103.0) internal successors, (927), 9 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:06,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:06,498 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:06,498 INFO L175 Difference]: Start difference. First operand has 80 places, 48 transitions, 313 flow. Second operand 9 states and 927 transitions. [2023-08-03 22:06:06,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 72 transitions, 550 flow [2023-08-03 22:06:06,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 502 flow, removed 3 selfloop flow, removed 12 redundant places. [2023-08-03 22:06:06,501 INFO L231 Difference]: Finished difference. Result has 78 places, 49 transitions, 303 flow [2023-08-03 22:06:06,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=303, PETRI_PLACES=78, PETRI_TRANSITIONS=49} [2023-08-03 22:06:06,502 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 34 predicate places. [2023-08-03 22:06:06,502 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 49 transitions, 303 flow [2023-08-03 22:06:06,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.33333333333333) internal successors, (590), 6 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:06,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:06,503 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:06:06,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-03 22:06:06,503 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:06,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:06,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1371836796, now seen corresponding path program 1 times [2023-08-03 22:06:06,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:06,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552452204] [2023-08-03 22:06:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:06,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:06:06,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:06,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552452204] [2023-08-03 22:06:06,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552452204] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:06:06,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126736321] [2023-08-03 22:06:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:06,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:06:06,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:06:06,629 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:06:06,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 22:06:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:06,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-03 22:06:06,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:06:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:06:06,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:06:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:06:06,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126736321] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:06:06,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:06:06,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-08-03 22:06:06,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759328713] [2023-08-03 22:06:06,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:06:06,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 22:06:06,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:06,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 22:06:06,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-03 22:06:06,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 246 [2023-08-03 22:06:06,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 49 transitions, 303 flow. Second operand has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:06,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:06,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 246 [2023-08-03 22:06:06,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:07,097 INFO L124 PetriNetUnfolderBase]: 83/266 cut-off events. [2023-08-03 22:06:07,097 INFO L125 PetriNetUnfolderBase]: For 420/420 co-relation queries the response was YES. [2023-08-03 22:06:07,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 266 events. 83/266 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1064 event pairs, 44 based on Foata normal form. 7/249 useless extension candidates. Maximal degree in co-relation 808. Up to 97 conditions per place. [2023-08-03 22:06:07,099 INFO L140 encePairwiseOnDemand]: 236/246 looper letters, 49 selfloop transitions, 11 changer transitions 13/76 dead transitions. [2023-08-03 22:06:07,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 76 transitions, 550 flow [2023-08-03 22:06:07,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 22:06:07,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 22:06:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1102 transitions. [2023-08-03 22:06:07,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072431633407243 [2023-08-03 22:06:07,102 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1102 transitions. [2023-08-03 22:06:07,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1102 transitions. [2023-08-03 22:06:07,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:07,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1102 transitions. [2023-08-03 22:06:07,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 100.18181818181819) internal successors, (1102), 11 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:07,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:07,108 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:07,108 INFO L175 Difference]: Start difference. First operand has 78 places, 49 transitions, 303 flow. Second operand 11 states and 1102 transitions. [2023-08-03 22:06:07,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 76 transitions, 550 flow [2023-08-03 22:06:07,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 524 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-03 22:06:07,111 INFO L231 Difference]: Finished difference. Result has 82 places, 44 transitions, 271 flow [2023-08-03 22:06:07,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=271, PETRI_PLACES=82, PETRI_TRANSITIONS=44} [2023-08-03 22:06:07,112 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2023-08-03 22:06:07,112 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 44 transitions, 271 flow [2023-08-03 22:06:07,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:07,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:07,112 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:06:07,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 22:06:07,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 22:06:07,318 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:07,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:07,319 INFO L85 PathProgramCache]: Analyzing trace with hash 620744833, now seen corresponding path program 1 times [2023-08-03 22:06:07,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:07,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616260386] [2023-08-03 22:06:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:07,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:07,438 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 22:06:07,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:07,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616260386] [2023-08-03 22:06:07,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616260386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:06:07,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:06:07,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 22:06:07,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604594979] [2023-08-03 22:06:07,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:06:07,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 22:06:07,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:07,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 22:06:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-03 22:06:07,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 246 [2023-08-03 22:06:07,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 44 transitions, 271 flow. Second operand has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:07,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:07,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 246 [2023-08-03 22:06:07,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:07,666 INFO L124 PetriNetUnfolderBase]: 59/198 cut-off events. [2023-08-03 22:06:07,666 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2023-08-03 22:06:07,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 198 events. 59/198 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 694 event pairs, 23 based on Foata normal form. 14/198 useless extension candidates. Maximal degree in co-relation 625. Up to 66 conditions per place. [2023-08-03 22:06:07,667 INFO L140 encePairwiseOnDemand]: 236/246 looper letters, 23 selfloop transitions, 2 changer transitions 36/63 dead transitions. [2023-08-03 22:06:07,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 63 transitions, 461 flow [2023-08-03 22:06:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 22:06:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 22:06:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1090 transitions. [2023-08-03 22:06:07,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4028085735402809 [2023-08-03 22:06:07,671 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1090 transitions. [2023-08-03 22:06:07,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1090 transitions. [2023-08-03 22:06:07,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:07,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1090 transitions. [2023-08-03 22:06:07,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 99.0909090909091) internal successors, (1090), 11 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:07,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:07,677 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:07,677 INFO L175 Difference]: Start difference. First operand has 82 places, 44 transitions, 271 flow. Second operand 11 states and 1090 transitions. [2023-08-03 22:06:07,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 63 transitions, 461 flow [2023-08-03 22:06:07,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 63 transitions, 416 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-08-03 22:06:07,679 INFO L231 Difference]: Finished difference. Result has 75 places, 23 transitions, 124 flow [2023-08-03 22:06:07,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=124, PETRI_PLACES=75, PETRI_TRANSITIONS=23} [2023-08-03 22:06:07,680 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2023-08-03 22:06:07,680 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 23 transitions, 124 flow [2023-08-03 22:06:07,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.71428571428571) internal successors, (677), 7 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:07,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:06:07,680 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 22:06:07,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-03 22:06:07,680 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:06:07,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:06:07,681 INFO L85 PathProgramCache]: Analyzing trace with hash -100503541, now seen corresponding path program 1 times [2023-08-03 22:06:07,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:06:07,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864870988] [2023-08-03 22:06:07,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:07,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:06:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:06:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:06:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864870988] [2023-08-03 22:06:07,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864870988] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:06:07,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116772885] [2023-08-03 22:06:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:06:07,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:06:07,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:06:07,815 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:06:07,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 22:06:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:06:07,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-03 22:06:07,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:06:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:06:07,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:06:08,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 22:06:08,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116772885] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:06:08,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:06:08,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-08-03 22:06:08,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935451491] [2023-08-03 22:06:08,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:06:08,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 22:06:08,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:06:08,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 22:06:08,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-03 22:06:08,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 246 [2023-08-03 22:06:08,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 23 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:08,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:06:08,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 246 [2023-08-03 22:06:08,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:06:08,198 INFO L124 PetriNetUnfolderBase]: 30/89 cut-off events. [2023-08-03 22:06:08,198 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2023-08-03 22:06:08,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 89 events. 30/89 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 228 event pairs, 5 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 305. Up to 31 conditions per place. [2023-08-03 22:06:08,198 INFO L140 encePairwiseOnDemand]: 236/246 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-08-03 22:06:08,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 35 transitions, 251 flow [2023-08-03 22:06:08,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 22:06:08,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 22:06:08,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 877 transitions. [2023-08-03 22:06:08,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3961156278229449 [2023-08-03 22:06:08,201 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 877 transitions. [2023-08-03 22:06:08,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 877 transitions. [2023-08-03 22:06:08,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:06:08,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 877 transitions. [2023-08-03 22:06:08,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.44444444444444) internal successors, (877), 9 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:08,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:08,206 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:08,206 INFO L175 Difference]: Start difference. First operand has 75 places, 23 transitions, 124 flow. Second operand 9 states and 877 transitions. [2023-08-03 22:06:08,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 35 transitions, 251 flow [2023-08-03 22:06:08,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 35 transitions, 219 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-08-03 22:06:08,208 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-03 22:06:08,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-03 22:06:08,208 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-08-03 22:06:08,208 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-03 22:06:08,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:06:08,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-08-03 22:06:08,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-08-03 22:06:08,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-08-03 22:06:08,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-08-03 22:06:08,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-08-03 22:06:08,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-08-03 22:06:08,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2023-08-03 22:06:08,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-08-03 22:06:08,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 22:06:08,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-03 22:06:08,410 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:06:08,410 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (2/2) [2023-08-03 22:06:08,412 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 22:06:08,412 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 22:06:08,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 10:06:08 BasicIcfg [2023-08-03 22:06:08,416 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 22:06:08,416 INFO L158 Benchmark]: Toolchain (without parser) took 15373.06ms. Allocated memory was 362.8MB in the beginning and 692.1MB in the end (delta: 329.3MB). Free memory was 306.9MB in the beginning and 587.0MB in the end (delta: -280.1MB). Peak memory consumption was 49.8MB. Max. memory is 16.0GB. [2023-08-03 22:06:08,416 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 362.8MB. Free memory is still 315.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:06:08,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.99ms. Allocated memory is still 362.8MB. Free memory was 306.9MB in the beginning and 287.7MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 22:06:08,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.59ms. Allocated memory is still 362.8MB. Free memory was 287.7MB in the beginning and 285.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:06:08,417 INFO L158 Benchmark]: Boogie Preprocessor took 21.71ms. Allocated memory is still 362.8MB. Free memory was 285.6MB in the beginning and 284.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:06:08,417 INFO L158 Benchmark]: RCFGBuilder took 451.91ms. Allocated memory was 362.8MB in the beginning and 576.7MB in the end (delta: 213.9MB). Free memory was 283.9MB in the beginning and 541.0MB in the end (delta: -257.2MB). Peak memory consumption was 18.2MB. Max. memory is 16.0GB. [2023-08-03 22:06:08,418 INFO L158 Benchmark]: TraceAbstraction took 14436.15ms. Allocated memory was 576.7MB in the beginning and 692.1MB in the end (delta: 115.3MB). Free memory was 541.0MB in the beginning and 587.0MB in the end (delta: -46.0MB). Peak memory consumption was 69.3MB. Max. memory is 16.0GB. [2023-08-03 22:06:08,419 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 362.8MB. Free memory is still 315.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 403.99ms. Allocated memory is still 362.8MB. Free memory was 306.9MB in the beginning and 287.7MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.59ms. Allocated memory is still 362.8MB. Free memory was 287.7MB in the beginning and 285.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.71ms. Allocated memory is still 362.8MB. Free memory was 285.6MB in the beginning and 284.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 451.91ms. Allocated memory was 362.8MB in the beginning and 576.7MB in the end (delta: 213.9MB). Free memory was 283.9MB in the beginning and 541.0MB in the end (delta: -257.2MB). Peak memory consumption was 18.2MB. Max. memory is 16.0GB. * TraceAbstraction took 14436.15ms. Allocated memory was 576.7MB in the beginning and 692.1MB in the end (delta: 115.3MB). Free memory was 541.0MB in the beginning and 587.0MB in the end (delta: -46.0MB). Peak memory consumption was 69.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 89 PlacesBefore, 28 PlacesAfterwards, 92 TransitionsBefore, 27 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 86 TotalNumberOfCompositions, 4191 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2178, independent: 1993, independent conditional: 0, independent unconditional: 1993, dependent: 185, dependent conditional: 0, dependent unconditional: 185, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1151, independent: 1118, independent conditional: 0, independent unconditional: 1118, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2178, independent: 875, independent conditional: 0, independent unconditional: 875, dependent: 152, dependent conditional: 0, dependent unconditional: 152, unknown: 1151, unknown conditional: 0, unknown unconditional: 1151] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 120 PlacesBefore, 43 PlacesAfterwards, 125 TransitionsBefore, 43 TransitionsAfterwards, 5980 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 116 TotalNumberOfCompositions, 13259 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6445, independent: 6192, independent conditional: 0, independent unconditional: 6192, dependent: 253, dependent conditional: 0, dependent unconditional: 253, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3189, independent: 3128, independent conditional: 0, independent unconditional: 3128, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6445, independent: 3064, independent conditional: 0, independent unconditional: 3064, dependent: 192, dependent conditional: 0, dependent unconditional: 192, unknown: 3189, unknown conditional: 0, unknown unconditional: 3189] , Statistics on independence cache: Total cache size (in pairs): 171, Positive cache size: 145, Positive conditional cache size: 0, Positive unconditional cache size: 145, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 121 PlacesBefore, 44 PlacesAfterwards, 126 TransitionsBefore, 44 TransitionsAfterwards, 5980 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 120 TotalNumberOfCompositions, 13137 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6623, independent: 6376, independent conditional: 0, independent unconditional: 6376, dependent: 247, dependent conditional: 0, dependent unconditional: 247, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3215, independent: 3159, independent conditional: 0, independent unconditional: 3159, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6623, independent: 3217, independent conditional: 0, independent unconditional: 3217, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 3215, unknown conditional: 0, unknown unconditional: 3215] , Statistics on independence cache: Total cache size (in pairs): 184, Positive cache size: 158, Positive conditional cache size: 0, Positive unconditional cache size: 158, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, 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 - 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, 117 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: 2.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred 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, 142 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 117 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 117 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=104occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 103 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, 142 locations, 9 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: 8.9s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1103 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 806 mSDsluCounter, 539 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 408 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3080 IncrementalHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 131 mSDtfsCounter, 3080 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 178 SyntacticMatches, 14 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=318occurred in iteration=11, InterpolantAutomatonStates: 95, 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, 1.6s InterpolantComputationTime, 316 NumberOfCodeBlocks, 316 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 382 ConstructedInterpolants, 0 QuantifiedInterpolants, 2408 SizeOfPredicates, 14 NumberOfNonLiveVariables, 746 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 26 InterpolantComputations, 11 PerfectInterpolantSequences, 60/93 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 22:06:08,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...