/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_24-multiple-protecting_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:00:59,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:00:59,555 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:00:59,559 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:00:59,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:00:59,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:00:59,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:00:59,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:00:59,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:00:59,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:00:59,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:00:59,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:00:59,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:00:59,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:00:59,586 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:00:59,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:00:59,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:00:59,587 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:00:59,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:00:59,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:00:59,588 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:00:59,591 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:00:59,591 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:00:59,592 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:00:59,595 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:00:59,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:00:59,595 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:00:59,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:00:59,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:00:59,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:00:59,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:00:59,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:00:59,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:00:59,597 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:00:59,597 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:00:59,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:00:59,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:00:59,597 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:00:59,598 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:00:59,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:00:59,598 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:00:59,600 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:00:59,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:00:59,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:00:59,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:00:59,836 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:00:59,836 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:00:59,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_24-multiple-protecting_true_bound2.i [2023-08-03 16:01:01,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:01:01,248 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:01:01,248 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_24-multiple-protecting_true_bound2.i [2023-08-03 16:01:01,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c84bbe287/626667f70652480b9ce3c9505103fb0b/FLAG7bb822f0e [2023-08-03 16:01:01,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c84bbe287/626667f70652480b9ce3c9505103fb0b [2023-08-03 16:01:01,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:01:01,289 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:01:01,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:01:01,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:01:01,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:01:01,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:01:01" (1/1) ... [2023-08-03 16:01:01,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73cfec75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01, skipping insertion in model container [2023-08-03 16:01:01,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:01:01" (1/1) ... [2023-08-03 16:01:01,339 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:01:01,464 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_24-multiple-protecting_true_bound2.i[1096,1109] [2023-08-03 16:01:01,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:01:01,615 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:01:01,629 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_24-multiple-protecting_true_bound2.i[1096,1109] [2023-08-03 16:01:01,645 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:01:01,647 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:01:01,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:01:01,705 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:01:01,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01 WrapperNode [2023-08-03 16:01:01,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:01:01,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:01:01,707 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:01:01,707 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:01:01,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01" (1/1) ... [2023-08-03 16:01:01,723 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01" (1/1) ... [2023-08-03 16:01:01,744 INFO L138 Inliner]: procedures = 162, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 106 [2023-08-03 16:01:01,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:01:01,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:01:01,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:01:01,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:01:01,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01" (1/1) ... [2023-08-03 16:01:01,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01" (1/1) ... [2023-08-03 16:01:01,761 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01" (1/1) ... [2023-08-03 16:01:01,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01" (1/1) ... [2023-08-03 16:01:01,767 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01" (1/1) ... [2023-08-03 16:01:01,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01" (1/1) ... [2023-08-03 16:01:01,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01" (1/1) ... [2023-08-03 16:01:01,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01" (1/1) ... [2023-08-03 16:01:01,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:01:01,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:01:01,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:01:01,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:01:01,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01" (1/1) ... [2023-08-03 16:01:01,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:01:01,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:01:01,814 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 16:01:01,833 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 16:01:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 16:01:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:01:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:01:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:01:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:01:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:01:01,847 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:01:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:01:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:01:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:01:01,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:01:01,850 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 16:01:01,963 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:01:01,965 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:01:02,252 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:01:02,259 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:01:02,259 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 16:01:02,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:01:02 BoogieIcfgContainer [2023-08-03 16:01:02,261 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:01:02,263 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:01:02,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:01:02,273 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:01:02,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:01:01" (1/3) ... [2023-08-03 16:01:02,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd31da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:01:02, skipping insertion in model container [2023-08-03 16:01:02,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:01" (2/3) ... [2023-08-03 16:01:02,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd31da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:01:02, skipping insertion in model container [2023-08-03 16:01:02,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:01:02" (3/3) ... [2023-08-03 16:01:02,278 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_24-multiple-protecting_true_bound2.i [2023-08-03 16:01:02,287 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:01:02,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:01:02,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-03 16:01:02,296 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:01:02,380 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 16:01:02,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 145 transitions, 298 flow [2023-08-03 16:01:02,463 INFO L124 PetriNetUnfolderBase]: 13/211 cut-off events. [2023-08-03 16:01:02,463 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 16:01:02,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 211 events. 13/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 405 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 104. Up to 4 conditions per place. [2023-08-03 16:01:02,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 145 transitions, 298 flow [2023-08-03 16:01:02,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 125 transitions, 255 flow [2023-08-03 16:01:02,475 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:01:02,482 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 125 transitions, 255 flow [2023-08-03 16:01:02,484 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 125 transitions, 255 flow [2023-08-03 16:01:02,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 125 transitions, 255 flow [2023-08-03 16:01:02,514 INFO L124 PetriNetUnfolderBase]: 8/176 cut-off events. [2023-08-03 16:01:02,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:02,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 176 events. 8/176 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 331 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-03 16:01:02,517 INFO L119 LiptonReduction]: Number of co-enabled transitions 3762 [2023-08-03 16:01:05,539 INFO L134 LiptonReduction]: Checked pairs total: 11818 [2023-08-03 16:01:05,539 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-03 16:01:05,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:01:05,555 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;@4ff7f19a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:01:05,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 16:01:05,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:01:05,558 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 16:01:05,558 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:05,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:05,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:01:05,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:05,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:05,562 INFO L85 PathProgramCache]: Analyzing trace with hash 15040713, now seen corresponding path program 1 times [2023-08-03 16:01:05,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:05,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699585286] [2023-08-03 16:01:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:05,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:05,778 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 16:01:05,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:05,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699585286] [2023-08-03 16:01:05,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699585286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:05,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:05,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:01:05,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3047979] [2023-08-03 16:01:05,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:05,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:05,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:05,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:05,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 242 [2023-08-03 16:01:05,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 16:01:05,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:05,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 242 [2023-08-03 16:01:05,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:05,935 INFO L124 PetriNetUnfolderBase]: 228/520 cut-off events. [2023-08-03 16:01:05,935 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:05,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 520 events. 228/520 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2600 event pairs, 0 based on Foata normal form. 13/466 useless extension candidates. Maximal degree in co-relation 991. Up to 476 conditions per place. [2023-08-03 16:01:05,940 INFO L140 encePairwiseOnDemand]: 237/242 looper letters, 43 selfloop transitions, 2 changer transitions 1/52 dead transitions. [2023-08-03 16:01:05,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 201 flow [2023-08-03 16:01:05,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:05,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:05,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-08-03 16:01:05,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6005509641873278 [2023-08-03 16:01:05,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-08-03 16:01:05,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-08-03 16:01:05,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:05,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-08-03 16:01:05,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states 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 16:01:05,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 16:01:05,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 16:01:05,983 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 89 flow. Second operand 3 states and 436 transitions. [2023-08-03 16:01:05,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 201 flow [2023-08-03 16:01:05,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 201 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:01:05,987 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 89 flow [2023-08-03 16:01:05,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-08-03 16:01:05,992 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-03 16:01:05,992 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 89 flow [2023-08-03 16:01:05,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 16:01:05,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:05,993 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:01:05,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:01:05,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:05,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:05,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1599740748, now seen corresponding path program 1 times [2023-08-03 16:01:05,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:05,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443223072] [2023-08-03 16:01:05,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:05,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:01:06,054 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:01:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:01:06,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:01:06,101 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:01:06,102 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 16:01:06,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 16:01:06,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 16:01:06,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-03 16:01:06,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 16:01:06,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:01:06,108 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:01:06,111 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:01:06,111 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:01:06,145 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 16:01:06,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 180 transitions, 378 flow [2023-08-03 16:01:06,213 INFO L124 PetriNetUnfolderBase]: 22/336 cut-off events. [2023-08-03 16:01:06,213 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 16:01:06,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 336 events. 22/336 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 999 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2023-08-03 16:01:06,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 180 transitions, 378 flow [2023-08-03 16:01:06,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 159 transitions, 330 flow [2023-08-03 16:01:06,221 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:01:06,221 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 159 transitions, 330 flow [2023-08-03 16:01:06,221 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 159 transitions, 330 flow [2023-08-03 16:01:06,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 159 transitions, 330 flow [2023-08-03 16:01:06,245 INFO L124 PetriNetUnfolderBase]: 12/266 cut-off events. [2023-08-03 16:01:06,245 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:01:06,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 266 events. 12/266 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 779 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 177. Up to 6 conditions per place. [2023-08-03 16:01:06,253 INFO L119 LiptonReduction]: Number of co-enabled transitions 9768 [2023-08-03 16:01:08,992 INFO L134 LiptonReduction]: Checked pairs total: 38738 [2023-08-03 16:01:08,992 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-08-03 16:01:08,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:01:08,996 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;@4ff7f19a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:01:08,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 16:01:08,998 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:01:08,998 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-03 16:01:08,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:08,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:08,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:01:08,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:08,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:08,999 INFO L85 PathProgramCache]: Analyzing trace with hash 24893552, now seen corresponding path program 1 times [2023-08-03 16:01:09,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:09,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494834770] [2023-08-03 16:01:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:09,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:09,089 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 16:01:09,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:09,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494834770] [2023-08-03 16:01:09,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494834770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:09,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:09,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:01:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005073065] [2023-08-03 16:01:09,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:09,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:09,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:09,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:09,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:09,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 285 [2023-08-03 16:01:09,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states 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 16:01:09,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:09,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 285 [2023-08-03 16:01:09,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:10,042 INFO L124 PetriNetUnfolderBase]: 5526/10555 cut-off events. [2023-08-03 16:01:10,042 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 16:01:10,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19365 conditions, 10555 events. 5526/10555 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 81508 event pairs, 2574 based on Foata normal form. 169/9788 useless extension candidates. Maximal degree in co-relation 1444. Up to 8725 conditions per place. [2023-08-03 16:01:10,094 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 55 selfloop transitions, 2 changer transitions 1/79 dead transitions. [2023-08-03 16:01:10,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 286 flow [2023-08-03 16:01:10,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:10,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:10,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2023-08-03 16:01:10,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6385964912280702 [2023-08-03 16:01:10,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2023-08-03 16:01:10,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2023-08-03 16:01:10,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:10,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2023-08-03 16:01:10,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states 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 16:01:10,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 16:01:10,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 16:01:10,102 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 144 flow. Second operand 3 states and 546 transitions. [2023-08-03 16:01:10,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 286 flow [2023-08-03 16:01:10,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 284 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:01:10,106 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 150 flow [2023-08-03 16:01:10,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-08-03 16:01:10,107 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2023-08-03 16:01:10,107 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 150 flow [2023-08-03 16:01:10,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states 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 16:01:10,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:10,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:10,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:01:10,108 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:10,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash -42786035, now seen corresponding path program 1 times [2023-08-03 16:01:10,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:10,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137234956] [2023-08-03 16:01:10,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:10,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:10,200 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 16:01:10,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:10,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137234956] [2023-08-03 16:01:10,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137234956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:01:10,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257040701] [2023-08-03 16:01:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:10,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:01:10,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:01:10,211 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 16:01:10,235 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 16:01:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:10,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:01:10,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:01:10,323 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 16:01:10,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:01:10,346 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 16:01:10,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257040701] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:01:10,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:01:10,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:01:10,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389848513] [2023-08-03 16:01:10,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:01:10,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:10,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:10,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:10,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:01:10,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 285 [2023-08-03 16:01:10,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 16:01:10,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:10,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 285 [2023-08-03 16:01:10,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:11,152 INFO L124 PetriNetUnfolderBase]: 5047/9218 cut-off events. [2023-08-03 16:01:11,153 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2023-08-03 16:01:11,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17526 conditions, 9218 events. 5047/9218 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 67384 event pairs, 1781 based on Foata normal form. 13/8685 useless extension candidates. Maximal degree in co-relation 1376. Up to 7089 conditions per place. [2023-08-03 16:01:11,202 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 77 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2023-08-03 16:01:11,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 102 transitions, 386 flow [2023-08-03 16:01:11,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:01:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:01:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 726 transitions. [2023-08-03 16:01:11,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6368421052631579 [2023-08-03 16:01:11,204 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 726 transitions. [2023-08-03 16:01:11,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 726 transitions. [2023-08-03 16:01:11,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:11,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 726 transitions. [2023-08-03 16:01:11,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 states 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 16:01:11,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 16:01:11,209 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 16:01:11,209 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 150 flow. Second operand 4 states and 726 transitions. [2023-08-03 16:01:11,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 102 transitions, 386 flow [2023-08-03 16:01:11,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 102 transitions, 384 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:01:11,212 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 168 flow [2023-08-03 16:01:11,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-08-03 16:01:11,213 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2023-08-03 16:01:11,213 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 168 flow [2023-08-03 16:01:11,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 16:01:11,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:11,214 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:01:11,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:01:11,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:01:11,420 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:11,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:11,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1837407726, now seen corresponding path program 1 times [2023-08-03 16:01:11,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:11,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669759195] [2023-08-03 16:01:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:11,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:11,499 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 16:01:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:11,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669759195] [2023-08-03 16:01:11,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669759195] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:01:11,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696605424] [2023-08-03 16:01:11,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:11,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:01:11,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:01:11,502 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 16:01:11,504 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 16:01:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:11,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:01:11,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:01:11,611 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 16:01:11,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:01:11,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696605424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:11,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:01:11,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:01:11,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270088566] [2023-08-03 16:01:11,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:11,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:11,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:01:11,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 285 [2023-08-03 16:01:11,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 162.6) internal successors, (813), 5 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:11,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:11,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 285 [2023-08-03 16:01:11,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:12,266 INFO L124 PetriNetUnfolderBase]: 4760/7904 cut-off events. [2023-08-03 16:01:12,266 INFO L125 PetriNetUnfolderBase]: For 1027/1027 co-relation queries the response was YES. [2023-08-03 16:01:12,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16228 conditions, 7904 events. 4760/7904 cut-off events. For 1027/1027 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 53921 event pairs, 0 based on Foata normal form. 156/7579 useless extension candidates. Maximal degree in co-relation 1262. Up to 7088 conditions per place. [2023-08-03 16:01:12,302 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 77 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2023-08-03 16:01:12,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 100 transitions, 392 flow [2023-08-03 16:01:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:01:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:01:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 886 transitions. [2023-08-03 16:01:12,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217543859649123 [2023-08-03 16:01:12,305 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 886 transitions. [2023-08-03 16:01:12,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 886 transitions. [2023-08-03 16:01:12,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:12,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 886 transitions. [2023-08-03 16:01:12,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.2) internal successors, (886), 5 states have internal predecessors, (886), 0 states have call successors, (0), 0 states 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 16:01:12,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states 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 16:01:12,311 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states 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 16:01:12,311 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 168 flow. Second operand 5 states and 886 transitions. [2023-08-03 16:01:12,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 100 transitions, 392 flow [2023-08-03 16:01:12,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 100 transitions, 385 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 16:01:12,314 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 157 flow [2023-08-03 16:01:12,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2023-08-03 16:01:12,315 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2023-08-03 16:01:12,315 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 157 flow [2023-08-03 16:01:12,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 162.6) internal successors, (813), 5 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:12,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:12,316 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:12,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 16:01:12,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:01:12,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:12,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1125035977, now seen corresponding path program 1 times [2023-08-03 16:01:12,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:12,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723674060] [2023-08-03 16:01:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:12,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:12,606 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 16:01:12,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:12,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723674060] [2023-08-03 16:01:12,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723674060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:12,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:12,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 16:01:12,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724492255] [2023-08-03 16:01:12,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:12,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:12,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:12,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:12,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:12,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 285 [2023-08-03 16:01:12,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 16:01:12,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:12,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 285 [2023-08-03 16:01:12,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:13,713 INFO L124 PetriNetUnfolderBase]: 8475/15425 cut-off events. [2023-08-03 16:01:13,713 INFO L125 PetriNetUnfolderBase]: For 1736/1736 co-relation queries the response was YES. [2023-08-03 16:01:13,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29540 conditions, 15425 events. 8475/15425 cut-off events. For 1736/1736 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 121743 event pairs, 2835 based on Foata normal form. 182/14796 useless extension candidates. Maximal degree in co-relation 23369. Up to 8500 conditions per place. [2023-08-03 16:01:13,800 INFO L140 encePairwiseOnDemand]: 276/285 looper letters, 81 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2023-08-03 16:01:13,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 105 transitions, 434 flow [2023-08-03 16:01:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:13,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 571 transitions. [2023-08-03 16:01:13,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6678362573099416 [2023-08-03 16:01:13,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 571 transitions. [2023-08-03 16:01:13,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 571 transitions. [2023-08-03 16:01:13,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:13,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 571 transitions. [2023-08-03 16:01:13,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:13,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 16:01:13,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 16:01:13,807 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 157 flow. Second operand 3 states and 571 transitions. [2023-08-03 16:01:13,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 105 transitions, 434 flow [2023-08-03 16:01:13,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 426 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:01:13,810 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 202 flow [2023-08-03 16:01:13,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2023-08-03 16:01:13,811 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 7 predicate places. [2023-08-03 16:01:13,811 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 202 flow [2023-08-03 16:01:13,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 16:01:13,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:13,812 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:13,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:01:13,812 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:13,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:13,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1160767447, now seen corresponding path program 1 times [2023-08-03 16:01:13,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:13,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4510231] [2023-08-03 16:01:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:13,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:01:13,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:13,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4510231] [2023-08-03 16:01:13,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4510231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:13,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:13,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:01:13,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932764594] [2023-08-03 16:01:13,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:13,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:01:13,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:13,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:01:13,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:01:14,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 285 [2023-08-03 16:01:14,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 16:01:14,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:14,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 285 [2023-08-03 16:01:14,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:14,513 INFO L124 PetriNetUnfolderBase]: 3102/6474 cut-off events. [2023-08-03 16:01:14,513 INFO L125 PetriNetUnfolderBase]: For 1591/1591 co-relation queries the response was YES. [2023-08-03 16:01:14,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13267 conditions, 6474 events. 3102/6474 cut-off events. For 1591/1591 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 49648 event pairs, 1386 based on Foata normal form. 330/6619 useless extension candidates. Maximal degree in co-relation 8302. Up to 3313 conditions per place. [2023-08-03 16:01:14,536 INFO L140 encePairwiseOnDemand]: 276/285 looper letters, 85 selfloop transitions, 9 changer transitions 0/113 dead transitions. [2023-08-03 16:01:14,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 113 transitions, 514 flow [2023-08-03 16:01:14,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:01:14,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:01:14,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 710 transitions. [2023-08-03 16:01:14,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2023-08-03 16:01:14,539 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 710 transitions. [2023-08-03 16:01:14,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 710 transitions. [2023-08-03 16:01:14,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:14,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 710 transitions. [2023-08-03 16:01:14,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 16:01:14,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 16:01:14,543 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 16:01:14,543 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 202 flow. Second operand 4 states and 710 transitions. [2023-08-03 16:01:14,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 113 transitions, 514 flow [2023-08-03 16:01:14,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 113 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:01:14,548 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 236 flow [2023-08-03 16:01:14,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2023-08-03 16:01:14,549 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 9 predicate places. [2023-08-03 16:01:14,549 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 236 flow [2023-08-03 16:01:14,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 16:01:14,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:14,550 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:14,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:01:14,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:14,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:14,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1593420946, now seen corresponding path program 1 times [2023-08-03 16:01:14,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:14,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024875446] [2023-08-03 16:01:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:14,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:14,621 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 16:01:14,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:14,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024875446] [2023-08-03 16:01:14,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024875446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:14,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:14,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 16:01:14,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311933144] [2023-08-03 16:01:14,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:14,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:14,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:14,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:14,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:14,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 285 [2023-08-03 16:01:14,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states 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 16:01:14,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:14,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 285 [2023-08-03 16:01:14,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:15,034 INFO L124 PetriNetUnfolderBase]: 2856/6257 cut-off events. [2023-08-03 16:01:15,034 INFO L125 PetriNetUnfolderBase]: For 2098/2102 co-relation queries the response was YES. [2023-08-03 16:01:15,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13460 conditions, 6257 events. 2856/6257 cut-off events. For 2098/2102 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 48750 event pairs, 1016 based on Foata normal form. 0/6036 useless extension candidates. Maximal degree in co-relation 9196. Up to 3948 conditions per place. [2023-08-03 16:01:15,062 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 80 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2023-08-03 16:01:15,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 108 transitions, 507 flow [2023-08-03 16:01:15,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:15,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:15,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2023-08-03 16:01:15,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6549707602339181 [2023-08-03 16:01:15,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2023-08-03 16:01:15,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2023-08-03 16:01:15,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:15,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2023-08-03 16:01:15,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 16:01:15,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 16:01:15,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 16:01:15,068 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 236 flow. Second operand 3 states and 560 transitions. [2023-08-03 16:01:15,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 108 transitions, 507 flow [2023-08-03 16:01:15,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 108 transitions, 506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:01:15,072 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 254 flow [2023-08-03 16:01:15,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2023-08-03 16:01:15,073 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 11 predicate places. [2023-08-03 16:01:15,073 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 254 flow [2023-08-03 16:01:15,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states 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 16:01:15,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:15,073 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:15,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 16:01:15,074 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:15,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:15,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1986308131, now seen corresponding path program 1 times [2023-08-03 16:01:15,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:15,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943070696] [2023-08-03 16:01:15,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:15,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:15,225 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 16:01:15,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:15,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943070696] [2023-08-03 16:01:15,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943070696] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:01:15,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930723582] [2023-08-03 16:01:15,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:15,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:01:15,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:01:15,227 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 16:01:15,230 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 16:01:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:15,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 16:01:15,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:01:15,372 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 16:01:15,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:01:15,438 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 16:01:15,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930723582] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:01:15,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:01:15,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-03 16:01:15,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681298175] [2023-08-03 16:01:15,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:01:15,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:01:15,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:15,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:01:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:01:15,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 285 [2023-08-03 16:01:15,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states 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 16:01:15,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:15,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 285 [2023-08-03 16:01:15,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:16,142 INFO L124 PetriNetUnfolderBase]: 3457/7150 cut-off events. [2023-08-03 16:01:16,142 INFO L125 PetriNetUnfolderBase]: For 2858/2859 co-relation queries the response was YES. [2023-08-03 16:01:16,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16835 conditions, 7150 events. 3457/7150 cut-off events. For 2858/2859 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 56542 event pairs, 1345 based on Foata normal form. 81/7067 useless extension candidates. Maximal degree in co-relation 8598. Up to 2981 conditions per place. [2023-08-03 16:01:16,167 INFO L140 encePairwiseOnDemand]: 273/285 looper letters, 168 selfloop transitions, 12 changer transitions 0/200 dead transitions. [2023-08-03 16:01:16,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 200 transitions, 1004 flow [2023-08-03 16:01:16,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 16:01:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 16:01:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1267 transitions. [2023-08-03 16:01:16,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6350877192982456 [2023-08-03 16:01:16,171 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1267 transitions. [2023-08-03 16:01:16,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1267 transitions. [2023-08-03 16:01:16,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:16,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1267 transitions. [2023-08-03 16:01:16,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states 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 16:01:16,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 16:01:16,178 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 16:01:16,178 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 254 flow. Second operand 7 states and 1267 transitions. [2023-08-03 16:01:16,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 200 transitions, 1004 flow [2023-08-03 16:01:16,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 200 transitions, 995 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:01:16,183 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 331 flow [2023-08-03 16:01:16,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=331, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2023-08-03 16:01:16,183 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2023-08-03 16:01:16,183 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 331 flow [2023-08-03 16:01:16,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states 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 16:01:16,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:16,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:16,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 16:01:16,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:01:16,390 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:16,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:16,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1786556018, now seen corresponding path program 1 times [2023-08-03 16:01:16,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:16,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237585134] [2023-08-03 16:01:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:16,534 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 16:01:16,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:16,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237585134] [2023-08-03 16:01:16,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237585134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:16,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:16,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:01:16,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92113952] [2023-08-03 16:01:16,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:16,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:01:16,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:16,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:01:16,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:01:16,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 285 [2023-08-03 16:01:16,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 0 states have call successors, (0), 0 states 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 16:01:16,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:16,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 285 [2023-08-03 16:01:16,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:17,343 INFO L124 PetriNetUnfolderBase]: 3833/8205 cut-off events. [2023-08-03 16:01:17,344 INFO L125 PetriNetUnfolderBase]: For 4708/4733 co-relation queries the response was YES. [2023-08-03 16:01:17,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19846 conditions, 8205 events. 3833/8205 cut-off events. For 4708/4733 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 67734 event pairs, 1745 based on Foata normal form. 111/8242 useless extension candidates. Maximal degree in co-relation 10975. Up to 3405 conditions per place. [2023-08-03 16:01:17,366 INFO L140 encePairwiseOnDemand]: 273/285 looper letters, 163 selfloop transitions, 14 changer transitions 0/197 dead transitions. [2023-08-03 16:01:17,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 197 transitions, 1043 flow [2023-08-03 16:01:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 16:01:17,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 16:01:17,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1262 transitions. [2023-08-03 16:01:17,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6325814536340852 [2023-08-03 16:01:17,369 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1262 transitions. [2023-08-03 16:01:17,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1262 transitions. [2023-08-03 16:01:17,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:17,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1262 transitions. [2023-08-03 16:01:17,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.28571428571428) internal successors, (1262), 7 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states 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 16:01:17,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 16:01:17,376 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states 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 16:01:17,376 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 331 flow. Second operand 7 states and 1262 transitions. [2023-08-03 16:01:17,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 197 transitions, 1043 flow [2023-08-03 16:01:17,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 197 transitions, 1043 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:01:17,385 INFO L231 Difference]: Finished difference. Result has 102 places, 88 transitions, 427 flow [2023-08-03 16:01:17,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=102, PETRI_TRANSITIONS=88} [2023-08-03 16:01:17,386 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 32 predicate places. [2023-08-03 16:01:17,386 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 88 transitions, 427 flow [2023-08-03 16:01:17,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 0 states have call successors, (0), 0 states 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 16:01:17,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:17,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:17,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 16:01:17,387 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:17,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:17,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1008475996, now seen corresponding path program 1 times [2023-08-03 16:01:17,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:17,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558735575] [2023-08-03 16:01:17,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:17,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:17,463 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 16:01:17,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:17,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558735575] [2023-08-03 16:01:17,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558735575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:17,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:17,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:01:17,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246279703] [2023-08-03 16:01:17,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:17,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:17,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:17,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:17,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:17,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 285 [2023-08-03 16:01:17,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 88 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 16:01:17,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:17,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 285 [2023-08-03 16:01:17,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:18,439 INFO L124 PetriNetUnfolderBase]: 5278/11664 cut-off events. [2023-08-03 16:01:18,439 INFO L125 PetriNetUnfolderBase]: For 9629/9714 co-relation queries the response was YES. [2023-08-03 16:01:18,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30999 conditions, 11664 events. 5278/11664 cut-off events. For 9629/9714 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 102738 event pairs, 2057 based on Foata normal form. 1983/13632 useless extension candidates. Maximal degree in co-relation 17933. Up to 5755 conditions per place. [2023-08-03 16:01:18,479 INFO L140 encePairwiseOnDemand]: 257/285 looper letters, 92 selfloop transitions, 35 changer transitions 0/144 dead transitions. [2023-08-03 16:01:18,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 144 transitions, 956 flow [2023-08-03 16:01:18,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:18,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:18,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-08-03 16:01:18,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5953216374269006 [2023-08-03 16:01:18,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-08-03 16:01:18,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-08-03 16:01:18,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:18,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-08-03 16:01:18,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states 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 16:01:18,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 16:01:18,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 16:01:18,484 INFO L175 Difference]: Start difference. First operand has 102 places, 88 transitions, 427 flow. Second operand 3 states and 509 transitions. [2023-08-03 16:01:18,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 144 transitions, 956 flow [2023-08-03 16:01:18,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 144 transitions, 956 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:01:18,497 INFO L231 Difference]: Finished difference. Result has 105 places, 111 transitions, 661 flow [2023-08-03 16:01:18,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=661, PETRI_PLACES=105, PETRI_TRANSITIONS=111} [2023-08-03 16:01:18,498 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2023-08-03 16:01:18,498 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 111 transitions, 661 flow [2023-08-03 16:01:18,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 16:01:18,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:18,499 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:18,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 16:01:18,499 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:18,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1194837620, now seen corresponding path program 1 times [2023-08-03 16:01:18,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:18,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340109582] [2023-08-03 16:01:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:18,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:18,698 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 16:01:18,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:18,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340109582] [2023-08-03 16:01:18,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340109582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:18,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:18,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:01:18,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600261026] [2023-08-03 16:01:18,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:18,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:18,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:18,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:18,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:01:18,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 285 [2023-08-03 16:01:18,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 111 transitions, 661 flow. Second operand has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:18,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:18,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 285 [2023-08-03 16:01:18,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:19,314 INFO L124 PetriNetUnfolderBase]: 2891/5848 cut-off events. [2023-08-03 16:01:19,314 INFO L125 PetriNetUnfolderBase]: For 7004/7008 co-relation queries the response was YES. [2023-08-03 16:01:19,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19941 conditions, 5848 events. 2891/5848 cut-off events. For 7004/7008 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 41492 event pairs, 645 based on Foata normal form. 113/5951 useless extension candidates. Maximal degree in co-relation 16252. Up to 4912 conditions per place. [2023-08-03 16:01:19,344 INFO L140 encePairwiseOnDemand]: 279/285 looper letters, 95 selfloop transitions, 10 changer transitions 9/129 dead transitions. [2023-08-03 16:01:19,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 129 transitions, 923 flow [2023-08-03 16:01:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:01:19,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:01:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 641 transitions. [2023-08-03 16:01:19,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622807017543859 [2023-08-03 16:01:19,347 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 641 transitions. [2023-08-03 16:01:19,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 641 transitions. [2023-08-03 16:01:19,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:19,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 641 transitions. [2023-08-03 16:01:19,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.25) internal successors, (641), 4 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 16:01:19,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 16:01:19,350 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 16:01:19,351 INFO L175 Difference]: Start difference. First operand has 105 places, 111 transitions, 661 flow. Second operand 4 states and 641 transitions. [2023-08-03 16:01:19,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 129 transitions, 923 flow [2023-08-03 16:01:19,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 129 transitions, 868 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 16:01:19,374 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 498 flow [2023-08-03 16:01:19,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=498, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2023-08-03 16:01:19,374 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2023-08-03 16:01:19,375 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 498 flow [2023-08-03 16:01:19,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:19,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:19,375 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:19,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 16:01:19,375 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:19,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:19,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1387957708, now seen corresponding path program 1 times [2023-08-03 16:01:19,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:19,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665235258] [2023-08-03 16:01:19,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:19,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:19,611 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 16:01:19,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:19,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665235258] [2023-08-03 16:01:19,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665235258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:19,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:19,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 16:01:19,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878367408] [2023-08-03 16:01:19,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:19,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 16:01:19,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:19,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 16:01:19,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-03 16:01:19,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 285 [2023-08-03 16:01:19,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 498 flow. Second operand has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states 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 16:01:19,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:19,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 285 [2023-08-03 16:01:19,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:20,176 INFO L124 PetriNetUnfolderBase]: 1769/3911 cut-off events. [2023-08-03 16:01:20,176 INFO L125 PetriNetUnfolderBase]: For 5565/5604 co-relation queries the response was YES. [2023-08-03 16:01:20,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12056 conditions, 3911 events. 1769/3911 cut-off events. For 5565/5604 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 27624 event pairs, 1166 based on Foata normal form. 117/3985 useless extension candidates. Maximal degree in co-relation 9381. Up to 2827 conditions per place. [2023-08-03 16:01:20,189 INFO L140 encePairwiseOnDemand]: 273/285 looper letters, 85 selfloop transitions, 23 changer transitions 0/133 dead transitions. [2023-08-03 16:01:20,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 133 transitions, 920 flow [2023-08-03 16:01:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-03 16:01:20,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-03 16:01:20,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1609 transitions. [2023-08-03 16:01:20,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645614035087719 [2023-08-03 16:01:20,192 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1609 transitions. [2023-08-03 16:01:20,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1609 transitions. [2023-08-03 16:01:20,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:20,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1609 transitions. [2023-08-03 16:01:20,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states 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 16:01:20,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 285.0) internal successors, (3135), 11 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states 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 16:01:20,201 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 285.0) internal successors, (3135), 11 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states 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 16:01:20,201 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 498 flow. Second operand 10 states and 1609 transitions. [2023-08-03 16:01:20,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 133 transitions, 920 flow [2023-08-03 16:01:20,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 133 transitions, 882 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 16:01:20,208 INFO L231 Difference]: Finished difference. Result has 105 places, 91 transitions, 508 flow [2023-08-03 16:01:20,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=508, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2023-08-03 16:01:20,213 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2023-08-03 16:01:20,213 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 508 flow [2023-08-03 16:01:20,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states 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 16:01:20,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:20,213 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:20,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 16:01:20,214 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:20,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:20,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1206967778, now seen corresponding path program 1 times [2023-08-03 16:01:20,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:20,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23990301] [2023-08-03 16:01:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:20,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:01:20,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:20,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23990301] [2023-08-03 16:01:20,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23990301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:20,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:20,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:01:20,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146401450] [2023-08-03 16:01:20,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:20,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:20,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:20,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:20,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:01:20,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 285 [2023-08-03 16:01:20,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 508 flow. Second operand has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:20,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:20,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 285 [2023-08-03 16:01:20,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:20,697 INFO L124 PetriNetUnfolderBase]: 458/1406 cut-off events. [2023-08-03 16:01:20,697 INFO L125 PetriNetUnfolderBase]: For 2303/2318 co-relation queries the response was YES. [2023-08-03 16:01:20,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4566 conditions, 1406 events. 458/1406 cut-off events. For 2303/2318 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8918 event pairs, 119 based on Foata normal form. 216/1621 useless extension candidates. Maximal degree in co-relation 2715. Up to 715 conditions per place. [2023-08-03 16:01:20,704 INFO L140 encePairwiseOnDemand]: 279/285 looper letters, 72 selfloop transitions, 12 changer transitions 0/112 dead transitions. [2023-08-03 16:01:20,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 112 transitions, 810 flow [2023-08-03 16:01:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:01:20,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:01:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 678 transitions. [2023-08-03 16:01:20,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947368421052631 [2023-08-03 16:01:20,706 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 678 transitions. [2023-08-03 16:01:20,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 678 transitions. [2023-08-03 16:01:20,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:20,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 678 transitions. [2023-08-03 16:01:20,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states 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 16:01:20,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 16:01:20,709 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 16:01:20,710 INFO L175 Difference]: Start difference. First operand has 105 places, 91 transitions, 508 flow. Second operand 4 states and 678 transitions. [2023-08-03 16:01:20,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 112 transitions, 810 flow [2023-08-03 16:01:20,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 112 transitions, 754 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-03 16:01:20,716 INFO L231 Difference]: Finished difference. Result has 99 places, 90 transitions, 482 flow [2023-08-03 16:01:20,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=482, PETRI_PLACES=99, PETRI_TRANSITIONS=90} [2023-08-03 16:01:20,716 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 29 predicate places. [2023-08-03 16:01:20,716 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 90 transitions, 482 flow [2023-08-03 16:01:20,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:20,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:20,717 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:20,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 16:01:20,717 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:20,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:20,717 INFO L85 PathProgramCache]: Analyzing trace with hash -119316033, now seen corresponding path program 1 times [2023-08-03 16:01:20,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:20,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195009933] [2023-08-03 16:01:20,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:20,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:20,846 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 16:01:20,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:20,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195009933] [2023-08-03 16:01:20,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195009933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:20,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:20,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:01:20,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253636123] [2023-08-03 16:01:20,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:20,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:01:20,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:20,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:01:20,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:01:20,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 285 [2023-08-03 16:01:20,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 90 transitions, 482 flow. Second operand has 6 states, 6 states have (on average 161.66666666666666) internal successors, (970), 6 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 16:01:20,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:20,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 285 [2023-08-03 16:01:20,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:21,120 INFO L124 PetriNetUnfolderBase]: 437/1350 cut-off events. [2023-08-03 16:01:21,120 INFO L125 PetriNetUnfolderBase]: For 2435/2446 co-relation queries the response was YES. [2023-08-03 16:01:21,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4377 conditions, 1350 events. 437/1350 cut-off events. For 2435/2446 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8458 event pairs, 189 based on Foata normal form. 6/1344 useless extension candidates. Maximal degree in co-relation 2784. Up to 442 conditions per place. [2023-08-03 16:01:21,125 INFO L140 encePairwiseOnDemand]: 278/285 looper letters, 97 selfloop transitions, 7 changer transitions 7/144 dead transitions. [2023-08-03 16:01:21,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 144 transitions, 1010 flow [2023-08-03 16:01:21,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 16:01:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 16:01:21,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1030 transitions. [2023-08-03 16:01:21,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6023391812865497 [2023-08-03 16:01:21,128 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1030 transitions. [2023-08-03 16:01:21,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1030 transitions. [2023-08-03 16:01:21,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:21,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1030 transitions. [2023-08-03 16:01:21,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 16:01:21,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 16:01:21,133 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 16:01:21,133 INFO L175 Difference]: Start difference. First operand has 99 places, 90 transitions, 482 flow. Second operand 6 states and 1030 transitions. [2023-08-03 16:01:21,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 144 transitions, 1010 flow [2023-08-03 16:01:21,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 144 transitions, 993 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:01:21,139 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 498 flow [2023-08-03 16:01:21,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=498, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2023-08-03 16:01:21,140 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2023-08-03 16:01:21,140 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 498 flow [2023-08-03 16:01:21,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.66666666666666) internal successors, (970), 6 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 16:01:21,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:21,141 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:21,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-03 16:01:21,141 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:21,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:21,142 INFO L85 PathProgramCache]: Analyzing trace with hash -207970855, now seen corresponding path program 1 times [2023-08-03 16:01:21,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:21,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348745915] [2023-08-03 16:01:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:21,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:21,277 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 16:01:21,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:21,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348745915] [2023-08-03 16:01:21,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348745915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:21,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:21,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:01:21,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569937896] [2023-08-03 16:01:21,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:21,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 16:01:21,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 16:01:21,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:01:21,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 285 [2023-08-03 16:01:21,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 498 flow. Second operand has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 16:01:21,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:21,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 285 [2023-08-03 16:01:21,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:21,533 INFO L124 PetriNetUnfolderBase]: 412/1283 cut-off events. [2023-08-03 16:01:21,533 INFO L125 PetriNetUnfolderBase]: For 2258/2269 co-relation queries the response was YES. [2023-08-03 16:01:21,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4279 conditions, 1283 events. 412/1283 cut-off events. For 2258/2269 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7909 event pairs, 164 based on Foata normal form. 7/1279 useless extension candidates. Maximal degree in co-relation 2933. Up to 414 conditions per place. [2023-08-03 16:01:21,538 INFO L140 encePairwiseOnDemand]: 278/285 looper letters, 88 selfloop transitions, 7 changer transitions 7/138 dead transitions. [2023-08-03 16:01:21,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 138 transitions, 959 flow [2023-08-03 16:01:21,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 16:01:21,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 16:01:21,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1024 transitions. [2023-08-03 16:01:21,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5988304093567252 [2023-08-03 16:01:21,540 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1024 transitions. [2023-08-03 16:01:21,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1024 transitions. [2023-08-03 16:01:21,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:21,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1024 transitions. [2023-08-03 16:01:21,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states 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 16:01:21,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 16:01:21,545 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 16:01:21,546 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 498 flow. Second operand 6 states and 1024 transitions. [2023-08-03 16:01:21,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 138 transitions, 959 flow [2023-08-03 16:01:21,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 138 transitions, 946 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:01:21,552 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 519 flow [2023-08-03 16:01:21,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2023-08-03 16:01:21,553 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 41 predicate places. [2023-08-03 16:01:21,553 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 519 flow [2023-08-03 16:01:21,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 0 states have call successors, (0), 0 states 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 16:01:21,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:21,553 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:21,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-03 16:01:21,554 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:01:21,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:21,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2141282456, now seen corresponding path program 1 times [2023-08-03 16:01:21,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:21,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858338495] [2023-08-03 16:01:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:21,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:21,770 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 16:01:21,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:21,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858338495] [2023-08-03 16:01:21,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858338495] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:21,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:21,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 16:01:21,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517942435] [2023-08-03 16:01:21,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:21,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 16:01:21,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:21,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 16:01:21,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-03 16:01:21,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 285 [2023-08-03 16:01:21,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 519 flow. Second operand has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states 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 16:01:21,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:21,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 285 [2023-08-03 16:01:21,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:22,131 INFO L124 PetriNetUnfolderBase]: 443/1284 cut-off events. [2023-08-03 16:01:22,131 INFO L125 PetriNetUnfolderBase]: For 2402/2414 co-relation queries the response was YES. [2023-08-03 16:01:22,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4499 conditions, 1284 events. 443/1284 cut-off events. For 2402/2414 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7721 event pairs, 217 based on Foata normal form. 5/1278 useless extension candidates. Maximal degree in co-relation 3081. Up to 607 conditions per place. [2023-08-03 16:01:22,134 INFO L140 encePairwiseOnDemand]: 275/285 looper letters, 0 selfloop transitions, 0 changer transitions 137/137 dead transitions. [2023-08-03 16:01:22,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 137 transitions, 984 flow [2023-08-03 16:01:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 16:01:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 16:01:22,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1305 transitions. [2023-08-03 16:01:22,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5723684210526315 [2023-08-03 16:01:22,137 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1305 transitions. [2023-08-03 16:01:22,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1305 transitions. [2023-08-03 16:01:22,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:22,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1305 transitions. [2023-08-03 16:01:22,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 163.125) internal successors, (1305), 8 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:22,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 16:01:22,143 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states 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 16:01:22,143 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 519 flow. Second operand 8 states and 1305 transitions. [2023-08-03 16:01:22,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 137 transitions, 984 flow [2023-08-03 16:01:22,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 137 transitions, 969 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:01:22,151 INFO L231 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2023-08-03 16:01:22,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2023-08-03 16:01:22,151 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 44 predicate places. [2023-08-03 16:01:22,152 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2023-08-03 16:01:22,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states 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 16:01:22,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-03 16:01:22,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 16:01:22,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 16:01:22,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-03 16:01:22,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 16:01:22,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-03 16:01:22,153 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:22,154 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:01:22,154 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:01:22,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:01:22 BasicIcfg [2023-08-03 16:01:22,157 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:01:22,158 INFO L158 Benchmark]: Toolchain (without parser) took 20869.45ms. Allocated memory was 562.0MB in the beginning and 1.2GB in the end (delta: 593.5MB). Free memory was 507.8MB in the beginning and 1.0GB in the end (delta: -492.9MB). Peak memory consumption was 103.5MB. Max. memory is 16.0GB. [2023-08-03 16:01:22,158 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 356.5MB. Free memory is still 303.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:01:22,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.00ms. Allocated memory is still 562.0MB. Free memory was 507.8MB in the beginning and 487.9MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 16:01:22,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.22ms. Allocated memory is still 562.0MB. Free memory was 487.9MB in the beginning and 485.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:01:22,159 INFO L158 Benchmark]: Boogie Preprocessor took 35.11ms. Allocated memory is still 562.0MB. Free memory was 485.9MB in the beginning and 484.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:01:22,159 INFO L158 Benchmark]: RCFGBuilder took 480.44ms. Allocated memory is still 562.0MB. Free memory was 484.1MB in the beginning and 467.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 16:01:22,159 INFO L158 Benchmark]: TraceAbstraction took 19894.70ms. Allocated memory was 562.0MB in the beginning and 1.2GB in the end (delta: 593.5MB). Free memory was 466.3MB in the beginning and 1.0GB in the end (delta: -534.4MB). Peak memory consumption was 61.5MB. Max. memory is 16.0GB. [2023-08-03 16:01:22,160 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 356.5MB. Free memory is still 303.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 417.00ms. Allocated memory is still 562.0MB. Free memory was 507.8MB in the beginning and 487.9MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.22ms. Allocated memory is still 562.0MB. Free memory was 487.9MB in the beginning and 485.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.11ms. Allocated memory is still 562.0MB. Free memory was 485.9MB in the beginning and 484.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 480.44ms. Allocated memory is still 562.0MB. Free memory was 484.1MB in the beginning and 467.0MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 19894.70ms. Allocated memory was 562.0MB in the beginning and 1.2GB in the end (delta: 593.5MB). Free memory was 466.3MB in the beginning and 1.0GB in the end (delta: -534.4MB). Peak memory consumption was 61.5MB. 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: 3.1s, 124 PlacesBefore, 43 PlacesAfterwards, 125 TransitionsBefore, 42 TransitionsAfterwards, 3762 CoEnabledTransitionPairs, 7 FixpointIterations, 33 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 97 TotalNumberOfCompositions, 11818 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3416, independent: 2987, independent conditional: 0, independent unconditional: 2987, dependent: 429, dependent conditional: 0, dependent unconditional: 429, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1819, independent: 1762, independent conditional: 0, independent unconditional: 1762, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3416, independent: 1225, independent conditional: 0, independent unconditional: 1225, dependent: 372, dependent conditional: 0, dependent unconditional: 372, unknown: 1819, unknown conditional: 0, unknown unconditional: 1819] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 160 PlacesBefore, 70 PlacesAfterwards, 159 TransitionsBefore, 66 TransitionsAfterwards, 9768 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 105 TotalNumberOfCompositions, 38738 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10589, independent: 9901, independent conditional: 0, independent unconditional: 9901, dependent: 688, dependent conditional: 0, dependent unconditional: 688, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4423, independent: 4295, independent conditional: 0, independent unconditional: 4295, dependent: 128, dependent conditional: 0, dependent unconditional: 128, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10589, independent: 5606, independent conditional: 0, independent unconditional: 5606, dependent: 560, dependent conditional: 0, dependent unconditional: 560, unknown: 4423, unknown conditional: 0, unknown unconditional: 4423] , Statistics on independence cache: Total cache size (in pairs): 490, Positive cache size: 409, Positive conditional cache size: 0, Positive unconditional cache size: 409, Negative cache size: 81, Negative conditional cache size: 0, Negative unconditional cache size: 81, 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 with 1 thread instances CFG has 3 procedures, 173 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 207 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.0s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1620 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1179 mSDsluCounter, 368 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 287 mSDsCounter, 294 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4274 IncrementalHoareTripleChecker+Invalid, 4568 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 294 mSolverCounterUnsat, 81 mSDtfsCounter, 4274 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 80 SyntacticMatches, 14 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=661occurred in iteration=9, InterpolantAutomatonStates: 77, 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, 1.9s InterpolantComputationTime, 413 NumberOfCodeBlocks, 413 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 423 ConstructedInterpolants, 0 QuantifiedInterpolants, 1866 SizeOfPredicates, 3 NumberOfNonLiveVariables, 464 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 20 InterpolantComputations, 13 PerfectInterpolantSequences, 86/103 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 16:01:22,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...