/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_25-struct_nr_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:32:09,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:32:09,378 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:32:09,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:32:09,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:32:09,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:32:09,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:32:09,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:32:09,426 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:32:09,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:32:09,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:32:09,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:32:09,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:32:09,428 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:32:09,431 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:32:09,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:32:09,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:32:09,437 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:32:09,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:32:09,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:32:09,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:32:09,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:32:09,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:32:09,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:32:09,440 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:32:09,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:32:09,441 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:32:09,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:32:09,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:32:09,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:32:09,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:32:09,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:32:09,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:32:09,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:32:09,444 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:32:09,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:32:09,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:32:09,444 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:32:09,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:32:09,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:32:09,444 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:32:09,445 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:32:09,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:32:09,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:32:09,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:32:09,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:32:09,693 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:32:09,694 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_25-struct_nr_true_bound2.i [2023-08-04 04:32:10,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:32:11,154 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:32:11,154 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_25-struct_nr_true_bound2.i [2023-08-04 04:32:11,166 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90d87b5b1/7112bd6f3fe74f008097ea276ae1f6d7/FLAG5e8f8bff0 [2023-08-04 04:32:11,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90d87b5b1/7112bd6f3fe74f008097ea276ae1f6d7 [2023-08-04 04:32:11,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:32:11,182 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:32:11,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:32:11,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:32:11,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:32:11,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:32:11" (1/1) ... [2023-08-04 04:32:11,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41fe28e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11, skipping insertion in model container [2023-08-04 04:32:11,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:32:11" (1/1) ... [2023-08-04 04:32:11,232 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:32:11,364 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_25-struct_nr_true_bound2.i[1086,1099] [2023-08-04 04:32:11,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:32:11,475 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:32:11,486 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_25-struct_nr_true_bound2.i[1086,1099] [2023-08-04 04:32:11,493 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-04 04:32:11,495 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-04 04:32:11,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:32:11,537 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:32:11,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11 WrapperNode [2023-08-04 04:32:11,538 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:32:11,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:32:11,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:32:11,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:32:11,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11" (1/1) ... [2023-08-04 04:32:11,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11" (1/1) ... [2023-08-04 04:32:11,574 INFO L138 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 92 [2023-08-04 04:32:11,575 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:32:11,575 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:32:11,575 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:32:11,576 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:32:11,582 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11" (1/1) ... [2023-08-04 04:32:11,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11" (1/1) ... [2023-08-04 04:32:11,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11" (1/1) ... [2023-08-04 04:32:11,585 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11" (1/1) ... [2023-08-04 04:32:11,590 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11" (1/1) ... [2023-08-04 04:32:11,593 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11" (1/1) ... [2023-08-04 04:32:11,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11" (1/1) ... [2023-08-04 04:32:11,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11" (1/1) ... [2023-08-04 04:32:11,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:32:11,599 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:32:11,599 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:32:11,599 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:32:11,600 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11" (1/1) ... [2023-08-04 04:32:11,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:32:11,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:11,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 04:32:11,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 04:32:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:32:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:32:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:32:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:32:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:32:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 04:32:11,664 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 04:32:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:32:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:32:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:32:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:32:11,668 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:32:11,786 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:32:11,788 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:32:11,944 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:32:11,950 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:32:11,950 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 04:32:11,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:32:11 BoogieIcfgContainer [2023-08-04 04:32:11,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:32:11,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:32:11,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:32:11,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:32:11,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:32:11" (1/3) ... [2023-08-04 04:32:11,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543034fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:32:11, skipping insertion in model container [2023-08-04 04:32:11,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:32:11" (2/3) ... [2023-08-04 04:32:11,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543034fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:32:11, skipping insertion in model container [2023-08-04 04:32:11,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:32:11" (3/3) ... [2023-08-04 04:32:11,960 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_25-struct_nr_true_bound2.i [2023-08-04 04:32:11,967 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:32:11,976 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:32:11,976 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-04 04:32:11,976 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:32:12,020 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 04:32:12,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 98 transitions, 204 flow [2023-08-04 04:32:12,100 INFO L124 PetriNetUnfolderBase]: 10/131 cut-off events. [2023-08-04 04:32:12,100 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:32:12,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 131 events. 10/131 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 252 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2023-08-04 04:32:12,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 98 transitions, 204 flow [2023-08-04 04:32:12,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 93 transitions, 191 flow [2023-08-04 04:32:12,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:32:12,126 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 93 transitions, 191 flow [2023-08-04 04:32:12,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 93 transitions, 191 flow [2023-08-04 04:32:12,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 93 transitions, 191 flow [2023-08-04 04:32:12,180 INFO L124 PetriNetUnfolderBase]: 9/126 cut-off events. [2023-08-04 04:32:12,180 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:12,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 126 events. 9/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 248 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2023-08-04 04:32:12,183 INFO L119 LiptonReduction]: Number of co-enabled transitions 2028 [2023-08-04 04:32:14,431 INFO L134 LiptonReduction]: Checked pairs total: 4165 [2023-08-04 04:32:14,431 INFO L136 LiptonReduction]: Total number of compositions: 89 [2023-08-04 04:32:14,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:32:14,449 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;@2e1f466b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:32:14,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-04 04:32:14,451 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:32:14,451 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-04 04:32:14,451 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:14,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:14,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-04 04:32:14,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:32:14,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:14,456 INFO L85 PathProgramCache]: Analyzing trace with hash 382, now seen corresponding path program 1 times [2023-08-04 04:32:14,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:14,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89369381] [2023-08-04 04:32:14,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:14,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:14,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:14,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89369381] [2023-08-04 04:32:14,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89369381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:14,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:14,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-04 04:32:14,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413672434] [2023-08-04 04:32:14,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:14,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:32:14,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:14,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:32:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:32:14,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-04 04:32:14,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:14,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:14,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-04 04:32:14,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:14,691 INFO L124 PetriNetUnfolderBase]: 90/223 cut-off events. [2023-08-04 04:32:14,691 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:14,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 223 events. 90/223 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 860 event pairs, 90 based on Foata normal form. 11/179 useless extension candidates. Maximal degree in co-relation 409. Up to 211 conditions per place. [2023-08-04 04:32:14,696 INFO L140 encePairwiseOnDemand]: 183/187 looper letters, 21 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2023-08-04 04:32:14,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 93 flow [2023-08-04 04:32:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:32:14,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:32:14,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 197 transitions. [2023-08-04 04:32:14,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267379679144385 [2023-08-04 04:32:14,712 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 197 transitions. [2023-08-04 04:32:14,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 197 transitions. [2023-08-04 04:32:14,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:14,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 197 transitions. [2023-08-04 04:32:14,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:14,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:14,727 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:14,728 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 61 flow. Second operand 2 states and 197 transitions. [2023-08-04 04:32:14,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 93 flow [2023-08-04 04:32:14,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 93 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:32:14,732 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 51 flow [2023-08-04 04:32:14,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=51, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-08-04 04:32:14,737 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-08-04 04:32:14,737 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 51 flow [2023-08-04 04:32:14,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:14,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:14,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:32:14,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:32:14,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:32:14,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:14,738 INFO L85 PathProgramCache]: Analyzing trace with hash 361247208, now seen corresponding path program 1 times [2023-08-04 04:32:14,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:14,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057025698] [2023-08-04 04:32:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:14,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:14,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:14,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057025698] [2023-08-04 04:32:14,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057025698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:14,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:14,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:32:14,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306116822] [2023-08-04 04:32:14,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:14,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:14,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:14,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 187 [2023-08-04 04:32:14,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:14,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:14,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 187 [2023-08-04 04:32:14,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:14,958 INFO L124 PetriNetUnfolderBase]: 90/213 cut-off events. [2023-08-04 04:32:14,958 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:14,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 213 events. 90/213 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 873 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 427. Up to 191 conditions per place. [2023-08-04 04:32:14,964 INFO L140 encePairwiseOnDemand]: 184/187 looper letters, 29 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-04 04:32:14,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 33 transitions, 133 flow [2023-08-04 04:32:14,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:14,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-04 04:32:14,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49554367201426025 [2023-08-04 04:32:14,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-04 04:32:14,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-04 04:32:14,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:14,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-04 04:32:14,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:14,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:14,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:14,979 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 51 flow. Second operand 3 states and 278 transitions. [2023-08-04 04:32:14,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 33 transitions, 133 flow [2023-08-04 04:32:14,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 133 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:32:14,980 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 59 flow [2023-08-04 04:32:14,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-04 04:32:14,983 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-08-04 04:32:14,985 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 59 flow [2023-08-04 04:32:14,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:14,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:14,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:32:14,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:32:14,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:32:14,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:14,990 INFO L85 PathProgramCache]: Analyzing trace with hash 361953861, now seen corresponding path program 1 times [2023-08-04 04:32:14,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:14,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955385840] [2023-08-04 04:32:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:14,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:15,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:15,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955385840] [2023-08-04 04:32:15,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955385840] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:15,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:15,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:32:15,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329013886] [2023-08-04 04:32:15,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:15,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:15,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:15,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:15,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:15,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-04 04:32:15,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:15,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-04 04:32:15,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:15,282 INFO L124 PetriNetUnfolderBase]: 85/198 cut-off events. [2023-08-04 04:32:15,283 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-04 04:32:15,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 198 events. 85/198 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 725 event pairs, 43 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 421. Up to 168 conditions per place. [2023-08-04 04:32:15,284 INFO L140 encePairwiseOnDemand]: 183/187 looper letters, 26 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-04 04:32:15,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 138 flow [2023-08-04 04:32:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:15,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:15,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-08-04 04:32:15,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48663101604278075 [2023-08-04 04:32:15,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-08-04 04:32:15,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-08-04 04:32:15,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:15,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-08-04 04:32:15,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,289 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,289 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 59 flow. Second operand 3 states and 273 transitions. [2023-08-04 04:32:15,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 138 flow [2023-08-04 04:32:15,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:32:15,290 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 74 flow [2023-08-04 04:32:15,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-04 04:32:15,291 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-08-04 04:32:15,291 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 74 flow [2023-08-04 04:32:15,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:15,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:15,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:32:15,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:32:15,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:15,292 INFO L85 PathProgramCache]: Analyzing trace with hash -54709342, now seen corresponding path program 1 times [2023-08-04 04:32:15,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:15,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833700356] [2023-08-04 04:32:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:15,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:15,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:15,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833700356] [2023-08-04 04:32:15,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833700356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:15,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:15,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:32:15,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286972747] [2023-08-04 04:32:15,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:15,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:15,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:15,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:15,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:15,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-04 04:32:15,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:15,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-04 04:32:15,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:15,475 INFO L124 PetriNetUnfolderBase]: 85/201 cut-off events. [2023-08-04 04:32:15,475 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-04 04:32:15,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 201 events. 85/201 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 763 event pairs, 49 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 446. Up to 157 conditions per place. [2023-08-04 04:32:15,476 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 28 selfloop transitions, 5 changer transitions 3/37 dead transitions. [2023-08-04 04:32:15,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 173 flow [2023-08-04 04:32:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:15,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-04 04:32:15,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49554367201426025 [2023-08-04 04:32:15,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-04 04:32:15,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-04 04:32:15,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:15,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-04 04:32:15,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,481 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 74 flow. Second operand 3 states and 278 transitions. [2023-08-04 04:32:15,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 173 flow [2023-08-04 04:32:15,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:15,484 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 100 flow [2023-08-04 04:32:15,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-04 04:32:15,485 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2023-08-04 04:32:15,485 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 100 flow [2023-08-04 04:32:15,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:15,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:15,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:32:15,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-04 04:32:15,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:15,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1692486145, now seen corresponding path program 1 times [2023-08-04 04:32:15,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:15,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803800833] [2023-08-04 04:32:15,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:15,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:15,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:15,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803800833] [2023-08-04 04:32:15,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803800833] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:32:15,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092879972] [2023-08-04 04:32:15,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:15,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:15,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:15,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:32:15,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:32:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:15,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:32:15,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:32:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:15,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:32:15,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:15,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092879972] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:32:15,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:32:15,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:32:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235750241] [2023-08-04 04:32:15,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:32:15,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:32:15,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:15,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:32:15,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:32:15,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-04 04:32:15,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:15,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-04 04:32:15,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:15,730 INFO L124 PetriNetUnfolderBase]: 12/36 cut-off events. [2023-08-04 04:32:15,730 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-04 04:32:15,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 36 events. 12/36 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 7/43 useless extension candidates. Maximal degree in co-relation 93. Up to 26 conditions per place. [2023-08-04 04:32:15,730 INFO L140 encePairwiseOnDemand]: 184/187 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-04 04:32:15,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 18 transitions, 93 flow [2023-08-04 04:32:15,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:32:15,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:32:15,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2023-08-04 04:32:15,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572192513368984 [2023-08-04 04:32:15,732 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 342 transitions. [2023-08-04 04:32:15,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 342 transitions. [2023-08-04 04:32:15,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:15,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 342 transitions. [2023-08-04 04:32:15,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,735 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,735 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 100 flow. Second operand 4 states and 342 transitions. [2023-08-04 04:32:15,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 18 transitions, 93 flow [2023-08-04 04:32:15,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 18 transitions, 73 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-04 04:32:15,736 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 04:32:15,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-04 04:32:15,737 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -11 predicate places. [2023-08-04 04:32:15,737 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 04:32:15,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,739 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-04 04:32:15,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-04 04:32:15,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-04 04:32:15,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-04 04:32:15,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-08-04 04:32:15,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-04 04:32:15,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 04:32:15,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:15,946 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 04:32:15,947 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:32:15,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 98 transitions, 204 flow [2023-08-04 04:32:15,962 INFO L124 PetriNetUnfolderBase]: 10/131 cut-off events. [2023-08-04 04:32:15,962 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:32:15,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 131 events. 10/131 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 252 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2023-08-04 04:32:15,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 98 transitions, 204 flow [2023-08-04 04:32:15,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 92 transitions, 189 flow [2023-08-04 04:32:15,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:32:15,964 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 92 transitions, 189 flow [2023-08-04 04:32:15,964 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 92 transitions, 189 flow [2023-08-04 04:32:15,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 92 transitions, 189 flow [2023-08-04 04:32:15,973 INFO L124 PetriNetUnfolderBase]: 9/125 cut-off events. [2023-08-04 04:32:15,973 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:15,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 125 events. 9/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 245 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2023-08-04 04:32:15,975 INFO L119 LiptonReduction]: Number of co-enabled transitions 2028 [2023-08-04 04:32:17,684 INFO L134 LiptonReduction]: Checked pairs total: 3547 [2023-08-04 04:32:17,685 INFO L136 LiptonReduction]: Total number of compositions: 89 [2023-08-04 04:32:17,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:32:17,687 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;@2e1f466b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:32:17,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:32:17,690 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:32:17,690 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2023-08-04 04:32:17,690 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:17,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:17,690 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:32:17,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:32:17,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:17,691 INFO L85 PathProgramCache]: Analyzing trace with hash 991807118, now seen corresponding path program 1 times [2023-08-04 04:32:17,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:17,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560400834] [2023-08-04 04:32:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:17,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:32:17,704 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:32:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:32:17,723 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:32:17,724 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:32:17,724 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:32:17,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:32:17,724 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:32:17,725 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:32:17,725 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:32:17,725 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:32:17,741 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-04 04:32:17,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 126 transitions, 270 flow [2023-08-04 04:32:17,760 INFO L124 PetriNetUnfolderBase]: 18/216 cut-off events. [2023-08-04 04:32:17,760 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:32:17,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 216 events. 18/216 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 578 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 133. Up to 8 conditions per place. [2023-08-04 04:32:17,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 126 transitions, 270 flow [2023-08-04 04:32:17,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 126 transitions, 270 flow [2023-08-04 04:32:17,763 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:32:17,763 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 126 transitions, 270 flow [2023-08-04 04:32:17,763 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 126 transitions, 270 flow [2023-08-04 04:32:17,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 126 transitions, 270 flow [2023-08-04 04:32:17,781 INFO L124 PetriNetUnfolderBase]: 18/216 cut-off events. [2023-08-04 04:32:17,782 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:32:17,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 216 events. 18/216 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 578 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 133. Up to 8 conditions per place. [2023-08-04 04:32:17,789 INFO L119 LiptonReduction]: Number of co-enabled transitions 5980 [2023-08-04 04:32:19,789 INFO L134 LiptonReduction]: Checked pairs total: 13249 [2023-08-04 04:32:19,789 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-08-04 04:32:19,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:32:19,791 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;@2e1f466b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:32:19,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-04 04:32:19,792 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:32:19,792 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-04 04:32:19,792 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:19,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:19,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-04 04:32:19,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:32:19,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:19,793 INFO L85 PathProgramCache]: Analyzing trace with hash 741, now seen corresponding path program 1 times [2023-08-04 04:32:19,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:19,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652446837] [2023-08-04 04:32:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:19,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:19,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:19,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652446837] [2023-08-04 04:32:19,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652446837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:19,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:19,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-04 04:32:19,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331611077] [2023-08-04 04:32:19,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:19,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:32:19,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:19,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:32:19,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:32:19,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 243 [2023-08-04 04:32:19,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 108.5) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:19,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:19,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 243 [2023-08-04 04:32:19,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:20,064 INFO L124 PetriNetUnfolderBase]: 1731/2994 cut-off events. [2023-08-04 04:32:20,064 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-04 04:32:20,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5896 conditions, 2994 events. 1731/2994 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16597 event pairs, 1720 based on Foata normal form. 118/2261 useless extension candidates. Maximal degree in co-relation 2309. Up to 2839 conditions per place. [2023-08-04 04:32:20,080 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 33 selfloop transitions, 0 changer transitions 0/38 dead transitions. [2023-08-04 04:32:20,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 160 flow [2023-08-04 04:32:20,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:32:20,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:32:20,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 253 transitions. [2023-08-04 04:32:20,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205761316872428 [2023-08-04 04:32:20,081 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 253 transitions. [2023-08-04 04:32:20,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 253 transitions. [2023-08-04 04:32:20,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:20,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 253 transitions. [2023-08-04 04:32:20,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.5) internal successors, (253), 2 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,084 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,084 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 106 flow. Second operand 2 states and 253 transitions. [2023-08-04 04:32:20,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 160 flow [2023-08-04 04:32:20,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:32:20,090 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 94 flow [2023-08-04 04:32:20,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-04 04:32:20,092 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2023-08-04 04:32:20,092 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 94 flow [2023-08-04 04:32:20,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 108.5) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:20,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:32:20,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:32:20,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:32:20,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:20,093 INFO L85 PathProgramCache]: Analyzing trace with hash 705259054, now seen corresponding path program 1 times [2023-08-04 04:32:20,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:20,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343381519] [2023-08-04 04:32:20,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:20,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:20,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:20,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343381519] [2023-08-04 04:32:20,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343381519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:20,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:20,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:32:20,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814978841] [2023-08-04 04:32:20,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:20,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:20,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:20,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:20,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:20,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 243 [2023-08-04 04:32:20,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:20,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 243 [2023-08-04 04:32:20,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:20,338 INFO L124 PetriNetUnfolderBase]: 1730/2949 cut-off events. [2023-08-04 04:32:20,338 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-04 04:32:20,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5850 conditions, 2949 events. 1730/2949 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 16352 event pairs, 784 based on Foata normal form. 0/2092 useless extension candidates. Maximal degree in co-relation 5845. Up to 2820 conditions per place. [2023-08-04 04:32:20,357 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 41 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-04 04:32:20,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 200 flow [2023-08-04 04:32:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:20,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-08-04 04:32:20,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883401920438957 [2023-08-04 04:32:20,359 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-08-04 04:32:20,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-08-04 04:32:20,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:20,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-08-04 04:32:20,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,362 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,362 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 94 flow. Second operand 3 states and 356 transitions. [2023-08-04 04:32:20,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 200 flow [2023-08-04 04:32:20,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 200 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:32:20,365 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 106 flow [2023-08-04 04:32:20,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-04 04:32:20,367 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-08-04 04:32:20,367 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 106 flow [2023-08-04 04:32:20,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:20,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:32:20,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:32:20,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:32:20,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:20,369 INFO L85 PathProgramCache]: Analyzing trace with hash 706040363, now seen corresponding path program 1 times [2023-08-04 04:32:20,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:20,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911489839] [2023-08-04 04:32:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:20,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:20,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:20,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911489839] [2023-08-04 04:32:20,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911489839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:20,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:20,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:32:20,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652288975] [2023-08-04 04:32:20,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:20,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:20,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:20,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:20,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:20,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 243 [2023-08-04 04:32:20,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:20,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 243 [2023-08-04 04:32:20,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:20,805 INFO L124 PetriNetUnfolderBase]: 1958/3330 cut-off events. [2023-08-04 04:32:20,805 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2023-08-04 04:32:20,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6765 conditions, 3330 events. 1958/3330 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18651 event pairs, 1049 based on Foata normal form. 0/2553 useless extension candidates. Maximal degree in co-relation 6758. Up to 2874 conditions per place. [2023-08-04 04:32:20,822 INFO L140 encePairwiseOnDemand]: 233/243 looper letters, 53 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2023-08-04 04:32:20,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 291 flow [2023-08-04 04:32:20,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:20,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:20,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2023-08-04 04:32:20,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4993141289437586 [2023-08-04 04:32:20,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2023-08-04 04:32:20,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2023-08-04 04:32:20,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:20,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2023-08-04 04:32:20,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,829 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 106 flow. Second operand 3 states and 364 transitions. [2023-08-04 04:32:20,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 291 flow [2023-08-04 04:32:20,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:20,832 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 162 flow [2023-08-04 04:32:20,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-08-04 04:32:20,835 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2023-08-04 04:32:20,835 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 162 flow [2023-08-04 04:32:20,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:20,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:20,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:32:20,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:32:20,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:20,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1193795902, now seen corresponding path program 1 times [2023-08-04 04:32:20,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:20,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454829450] [2023-08-04 04:32:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:20,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:20,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:20,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454829450] [2023-08-04 04:32:20,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454829450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:20,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:20,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:32:20,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124318102] [2023-08-04 04:32:20,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:20,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:32:20,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:20,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:32:20,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:32:20,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 243 [2023-08-04 04:32:20,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:20,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 243 [2023-08-04 04:32:20,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:21,283 INFO L124 PetriNetUnfolderBase]: 2546/4320 cut-off events. [2023-08-04 04:32:21,283 INFO L125 PetriNetUnfolderBase]: For 1098/1098 co-relation queries the response was YES. [2023-08-04 04:32:21,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10241 conditions, 4320 events. 2546/4320 cut-off events. For 1098/1098 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 26418 event pairs, 822 based on Foata normal form. 26/3839 useless extension candidates. Maximal degree in co-relation 10233. Up to 1612 conditions per place. [2023-08-04 04:32:21,313 INFO L140 encePairwiseOnDemand]: 234/243 looper letters, 95 selfloop transitions, 18 changer transitions 1/118 dead transitions. [2023-08-04 04:32:21,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 118 transitions, 611 flow [2023-08-04 04:32:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:32:21,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:32:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 601 transitions. [2023-08-04 04:32:21,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49465020576131685 [2023-08-04 04:32:21,316 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 601 transitions. [2023-08-04 04:32:21,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 601 transitions. [2023-08-04 04:32:21,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:21,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 601 transitions. [2023-08-04 04:32:21,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:21,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:21,320 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:21,320 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 162 flow. Second operand 5 states and 601 transitions. [2023-08-04 04:32:21,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 118 transitions, 611 flow [2023-08-04 04:32:21,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 118 transitions, 593 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:32:21,327 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 283 flow [2023-08-04 04:32:21,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2023-08-04 04:32:21,328 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2023-08-04 04:32:21,328 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 283 flow [2023-08-04 04:32:21,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:21,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:21,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:21,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 04:32:21,329 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:32:21,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:21,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1768087882, now seen corresponding path program 1 times [2023-08-04 04:32:21,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:21,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894349569] [2023-08-04 04:32:21,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:21,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:21,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:21,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894349569] [2023-08-04 04:32:21,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894349569] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:32:21,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881769913] [2023-08-04 04:32:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:21,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:21,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:21,361 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:32:21,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:32:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:21,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:32:21,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:32:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:21,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:32:21,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:21,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881769913] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:32:21,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:32:21,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:32:21,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899023692] [2023-08-04 04:32:21,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:32:21,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:32:21,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:21,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:32:21,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:32:21,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 243 [2023-08-04 04:32:21,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 283 flow. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:21,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:21,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 243 [2023-08-04 04:32:21,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:21,820 INFO L124 PetriNetUnfolderBase]: 2321/3928 cut-off events. [2023-08-04 04:32:21,820 INFO L125 PetriNetUnfolderBase]: For 3994/4099 co-relation queries the response was YES. [2023-08-04 04:32:21,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11229 conditions, 3928 events. 2321/3928 cut-off events. For 3994/4099 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 23818 event pairs, 683 based on Foata normal form. 85/3616 useless extension candidates. Maximal degree in co-relation 11218. Up to 3418 conditions per place. [2023-08-04 04:32:21,853 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 79 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2023-08-04 04:32:21,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 90 transitions, 594 flow [2023-08-04 04:32:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:32:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:32:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 469 transitions. [2023-08-04 04:32:21,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825102880658436 [2023-08-04 04:32:21,855 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 469 transitions. [2023-08-04 04:32:21,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 469 transitions. [2023-08-04 04:32:21,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:21,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 469 transitions. [2023-08-04 04:32:21,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:21,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:21,858 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:21,858 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 283 flow. Second operand 4 states and 469 transitions. [2023-08-04 04:32:21,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 90 transitions, 594 flow [2023-08-04 04:32:21,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 90 transitions, 594 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:32:21,867 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 303 flow [2023-08-04 04:32:21,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=303, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2023-08-04 04:32:21,868 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2023-08-04 04:32:21,868 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 303 flow [2023-08-04 04:32:21,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:21,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:21,869 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:21,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:32:22,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-04 04:32:22,074 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:32:22,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:22,074 INFO L85 PathProgramCache]: Analyzing trace with hash 505081322, now seen corresponding path program 1 times [2023-08-04 04:32:22,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:22,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713873432] [2023-08-04 04:32:22,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:22,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:22,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:22,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713873432] [2023-08-04 04:32:22,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713873432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:22,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:22,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:32:22,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796832766] [2023-08-04 04:32:22,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:22,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:22,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:22,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:22,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:22,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 243 [2023-08-04 04:32:22,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:22,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 243 [2023-08-04 04:32:22,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:22,235 INFO L124 PetriNetUnfolderBase]: 183/505 cut-off events. [2023-08-04 04:32:22,235 INFO L125 PetriNetUnfolderBase]: For 595/595 co-relation queries the response was YES. [2023-08-04 04:32:22,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 505 events. 183/505 cut-off events. For 595/595 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2483 event pairs, 17 based on Foata normal form. 112/555 useless extension candidates. Maximal degree in co-relation 1468. Up to 373 conditions per place. [2023-08-04 04:32:22,238 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 42 selfloop transitions, 6 changer transitions 1/54 dead transitions. [2023-08-04 04:32:22,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 349 flow [2023-08-04 04:32:22,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-08-04 04:32:22,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47462277091906724 [2023-08-04 04:32:22,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-08-04 04:32:22,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-08-04 04:32:22,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:22,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-08-04 04:32:22,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,242 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 303 flow. Second operand 3 states and 346 transitions. [2023-08-04 04:32:22,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 349 flow [2023-08-04 04:32:22,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 313 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-04 04:32:22,246 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 178 flow [2023-08-04 04:32:22,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-08-04 04:32:22,246 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-08-04 04:32:22,247 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 178 flow [2023-08-04 04:32:22,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:22,247 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:22,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 04:32:22,247 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:32:22,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:22,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2088652367, now seen corresponding path program 1 times [2023-08-04 04:32:22,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:22,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754008190] [2023-08-04 04:32:22,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:22,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:32:22,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:22,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754008190] [2023-08-04 04:32:22,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754008190] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:22,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:22,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:32:22,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381923847] [2023-08-04 04:32:22,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:22,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:32:22,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:22,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:32:22,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:32:22,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 243 [2023-08-04 04:32:22,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:22,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 243 [2023-08-04 04:32:22,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:22,441 INFO L124 PetriNetUnfolderBase]: 188/494 cut-off events. [2023-08-04 04:32:22,441 INFO L125 PetriNetUnfolderBase]: For 385/385 co-relation queries the response was YES. [2023-08-04 04:32:22,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 494 events. 188/494 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2239 event pairs, 78 based on Foata normal form. 16/461 useless extension candidates. Maximal degree in co-relation 1410. Up to 179 conditions per place. [2023-08-04 04:32:22,444 INFO L140 encePairwiseOnDemand]: 238/243 looper letters, 61 selfloop transitions, 9 changer transitions 4/77 dead transitions. [2023-08-04 04:32:22,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 464 flow [2023-08-04 04:32:22,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:32:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:32:22,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 561 transitions. [2023-08-04 04:32:22,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617283950617284 [2023-08-04 04:32:22,446 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 561 transitions. [2023-08-04 04:32:22,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 561 transitions. [2023-08-04 04:32:22,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:22,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 561 transitions. [2023-08-04 04:32:22,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.2) internal successors, (561), 5 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,450 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,450 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 178 flow. Second operand 5 states and 561 transitions. [2023-08-04 04:32:22,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 464 flow [2023-08-04 04:32:22,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:22,452 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 198 flow [2023-08-04 04:32:22,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2023-08-04 04:32:22,453 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2023-08-04 04:32:22,453 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 198 flow [2023-08-04 04:32:22,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:22,453 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:22,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 04:32:22,454 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:32:22,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:22,454 INFO L85 PathProgramCache]: Analyzing trace with hash -554201473, now seen corresponding path program 1 times [2023-08-04 04:32:22,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:22,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120791020] [2023-08-04 04:32:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:22,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:22,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:22,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120791020] [2023-08-04 04:32:22,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120791020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:22,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:22,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:32:22,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599844524] [2023-08-04 04:32:22,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:22,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:32:22,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:22,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:32:22,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:32:22,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 243 [2023-08-04 04:32:22,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:22,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 243 [2023-08-04 04:32:22,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:22,687 INFO L124 PetriNetUnfolderBase]: 176/474 cut-off events. [2023-08-04 04:32:22,687 INFO L125 PetriNetUnfolderBase]: For 473/473 co-relation queries the response was YES. [2023-08-04 04:32:22,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 474 events. 176/474 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2098 event pairs, 104 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 1375. Up to 373 conditions per place. [2023-08-04 04:32:22,689 INFO L140 encePairwiseOnDemand]: 235/243 looper letters, 47 selfloop transitions, 8 changer transitions 2/61 dead transitions. [2023-08-04 04:32:22,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 375 flow [2023-08-04 04:32:22,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:32:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:32:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 540 transitions. [2023-08-04 04:32:22,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-04 04:32:22,691 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 540 transitions. [2023-08-04 04:32:22,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 540 transitions. [2023-08-04 04:32:22,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:22,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 540 transitions. [2023-08-04 04:32:22,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,695 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,695 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 198 flow. Second operand 5 states and 540 transitions. [2023-08-04 04:32:22,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 375 flow [2023-08-04 04:32:22,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 61 transitions, 375 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:32:22,697 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 232 flow [2023-08-04 04:32:22,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-04 04:32:22,698 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 18 predicate places. [2023-08-04 04:32:22,698 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 232 flow [2023-08-04 04:32:22,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:22,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:22,698 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:22,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 04:32:22,699 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:32:22,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:22,699 INFO L85 PathProgramCache]: Analyzing trace with hash 312147659, now seen corresponding path program 1 times [2023-08-04 04:32:22,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:22,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505565522] [2023-08-04 04:32:22,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:22,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:32:22,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:22,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505565522] [2023-08-04 04:32:22,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505565522] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:32:22,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775783933] [2023-08-04 04:32:22,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:22,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:22,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:22,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:32:22,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:32:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:22,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-04 04:32:22,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:32:22,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:32:22,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:32:22,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775783933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:22,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:32:22,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [2] total 5 [2023-08-04 04:32:22,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356573279] [2023-08-04 04:32:22,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:22,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:32:22,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:22,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:32:22,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:32:23,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 243 [2023-08-04 04:32:23,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 99.16666666666667) internal successors, (595), 6 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:23,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 243 [2023-08-04 04:32:23,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:23,195 INFO L124 PetriNetUnfolderBase]: 192/528 cut-off events. [2023-08-04 04:32:23,196 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2023-08-04 04:32:23,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1597 conditions, 528 events. 192/528 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2511 event pairs, 64 based on Foata normal form. 10/486 useless extension candidates. Maximal degree in co-relation 1582. Up to 155 conditions per place. [2023-08-04 04:32:23,198 INFO L140 encePairwiseOnDemand]: 235/243 looper letters, 64 selfloop transitions, 12 changer transitions 16/96 dead transitions. [2023-08-04 04:32:23,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 96 transitions, 626 flow [2023-08-04 04:32:23,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:32:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:32:23,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 666 transitions. [2023-08-04 04:32:23,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2023-08-04 04:32:23,201 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 666 transitions. [2023-08-04 04:32:23,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 666 transitions. [2023-08-04 04:32:23,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:23,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 666 transitions. [2023-08-04 04:32:23,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,205 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,205 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 232 flow. Second operand 6 states and 666 transitions. [2023-08-04 04:32:23,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 96 transitions, 626 flow [2023-08-04 04:32:23,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 626 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:32:23,209 INFO L231 Difference]: Finished difference. Result has 68 places, 47 transitions, 272 flow [2023-08-04 04:32:23,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2023-08-04 04:32:23,209 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 24 predicate places. [2023-08-04 04:32:23,209 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 272 flow [2023-08-04 04:32:23,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.16666666666667) internal successors, (595), 6 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:23,210 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:23,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 04:32:23,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:23,415 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:32:23,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1849985113, now seen corresponding path program 1 times [2023-08-04 04:32:23,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:23,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317954288] [2023-08-04 04:32:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:23,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:32:23,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:23,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317954288] [2023-08-04 04:32:23,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317954288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:23,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:23,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:32:23,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149371874] [2023-08-04 04:32:23,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:23,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:32:23,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:23,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:32:23,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:32:23,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 243 [2023-08-04 04:32:23,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:23,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 243 [2023-08-04 04:32:23,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:23,749 INFO L124 PetriNetUnfolderBase]: 207/574 cut-off events. [2023-08-04 04:32:23,749 INFO L125 PetriNetUnfolderBase]: For 1046/1046 co-relation queries the response was YES. [2023-08-04 04:32:23,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1844 conditions, 574 events. 207/574 cut-off events. For 1046/1046 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2855 event pairs, 80 based on Foata normal form. 10/519 useless extension candidates. Maximal degree in co-relation 1827. Up to 199 conditions per place. [2023-08-04 04:32:23,752 INFO L140 encePairwiseOnDemand]: 234/243 looper letters, 63 selfloop transitions, 12 changer transitions 17/94 dead transitions. [2023-08-04 04:32:23,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 659 flow [2023-08-04 04:32:23,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:32:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:32:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 667 transitions. [2023-08-04 04:32:23,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45747599451303156 [2023-08-04 04:32:23,755 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 667 transitions. [2023-08-04 04:32:23,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 667 transitions. [2023-08-04 04:32:23,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:23,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 667 transitions. [2023-08-04 04:32:23,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.16666666666667) internal successors, (667), 6 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,760 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 243.0) internal successors, (1701), 7 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,760 INFO L175 Difference]: Start difference. First operand has 68 places, 47 transitions, 272 flow. Second operand 6 states and 667 transitions. [2023-08-04 04:32:23,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 659 flow [2023-08-04 04:32:23,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 94 transitions, 633 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 04:32:23,764 INFO L231 Difference]: Finished difference. Result has 73 places, 45 transitions, 279 flow [2023-08-04 04:32:23,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=73, PETRI_TRANSITIONS=45} [2023-08-04 04:32:23,765 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2023-08-04 04:32:23,765 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 45 transitions, 279 flow [2023-08-04 04:32:23,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:23,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:23,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-04 04:32:23,766 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:32:23,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:23,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1623481136, now seen corresponding path program 1 times [2023-08-04 04:32:23,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:23,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757850526] [2023-08-04 04:32:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:23,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:23,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:23,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757850526] [2023-08-04 04:32:23,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757850526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:23,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:23,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:32:23,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780113744] [2023-08-04 04:32:23,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:23,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:32:23,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:23,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:32:23,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:32:23,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 243 [2023-08-04 04:32:23,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 45 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:23,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 243 [2023-08-04 04:32:23,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:24,030 INFO L124 PetriNetUnfolderBase]: 66/242 cut-off events. [2023-08-04 04:32:24,030 INFO L125 PetriNetUnfolderBase]: For 490/490 co-relation queries the response was YES. [2023-08-04 04:32:24,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 242 events. 66/242 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 892 event pairs, 36 based on Foata normal form. 20/244 useless extension candidates. Maximal degree in co-relation 777. Up to 127 conditions per place. [2023-08-04 04:32:24,031 INFO L140 encePairwiseOnDemand]: 232/243 looper letters, 28 selfloop transitions, 6 changer transitions 15/51 dead transitions. [2023-08-04 04:32:24,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 51 transitions, 401 flow [2023-08-04 04:32:24,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:32:24,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:32:24,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2023-08-04 04:32:24,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2023-08-04 04:32:24,033 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 522 transitions. [2023-08-04 04:32:24,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 522 transitions. [2023-08-04 04:32:24,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:24,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 522 transitions. [2023-08-04 04:32:24,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:24,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:24,037 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:24,037 INFO L175 Difference]: Start difference. First operand has 73 places, 45 transitions, 279 flow. Second operand 5 states and 522 transitions. [2023-08-04 04:32:24,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 51 transitions, 401 flow [2023-08-04 04:32:24,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 51 transitions, 370 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-04 04:32:24,040 INFO L231 Difference]: Finished difference. Result has 67 places, 30 transitions, 200 flow [2023-08-04 04:32:24,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=67, PETRI_TRANSITIONS=30} [2023-08-04 04:32:24,040 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2023-08-04 04:32:24,040 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 30 transitions, 200 flow [2023-08-04 04:32:24,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:24,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:24,041 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:24,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-04 04:32:24,041 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:32:24,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2010304034, now seen corresponding path program 1 times [2023-08-04 04:32:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:24,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320747845] [2023-08-04 04:32:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:24,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 04:32:24,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:24,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320747845] [2023-08-04 04:32:24,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320747845] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:32:24,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615134036] [2023-08-04 04:32:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:24,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:24,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:24,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:32:24,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 04:32:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:24,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-04 04:32:24,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:32:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:32:24,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:32:24,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615134036] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:24,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:32:24,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 7 [2023-08-04 04:32:24,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658276393] [2023-08-04 04:32:24,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:24,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 04:32:24,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:24,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 04:32:24,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-04 04:32:24,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 243 [2023-08-04 04:32:24,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 30 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:24,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:24,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 243 [2023-08-04 04:32:24,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:24,532 INFO L124 PetriNetUnfolderBase]: 40/131 cut-off events. [2023-08-04 04:32:24,532 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2023-08-04 04:32:24,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 131 events. 40/131 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 436 event pairs, 6 based on Foata normal form. 2/133 useless extension candidates. Maximal degree in co-relation 480. Up to 44 conditions per place. [2023-08-04 04:32:24,533 INFO L140 encePairwiseOnDemand]: 234/243 looper letters, 33 selfloop transitions, 7 changer transitions 8/50 dead transitions. [2023-08-04 04:32:24,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 50 transitions, 398 flow [2023-08-04 04:32:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 04:32:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 04:32:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 796 transitions. [2023-08-04 04:32:24,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4094650205761317 [2023-08-04 04:32:24,535 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 796 transitions. [2023-08-04 04:32:24,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 796 transitions. [2023-08-04 04:32:24,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:24,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 796 transitions. [2023-08-04 04:32:24,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.5) internal successors, (796), 8 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:24,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 243.0) internal successors, (2187), 9 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:24,540 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 243.0) internal successors, (2187), 9 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:24,540 INFO L175 Difference]: Start difference. First operand has 67 places, 30 transitions, 200 flow. Second operand 8 states and 796 transitions. [2023-08-04 04:32:24,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 50 transitions, 398 flow [2023-08-04 04:32:24,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 366 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-04 04:32:24,543 INFO L231 Difference]: Finished difference. Result has 60 places, 26 transitions, 162 flow [2023-08-04 04:32:24,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=162, PETRI_PLACES=60, PETRI_TRANSITIONS=26} [2023-08-04 04:32:24,543 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2023-08-04 04:32:24,544 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 26 transitions, 162 flow [2023-08-04 04:32:24,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:24,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:24,544 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:24,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 04:32:24,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-04 04:32:24,751 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-04 04:32:24,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:24,751 INFO L85 PathProgramCache]: Analyzing trace with hash 21222322, now seen corresponding path program 1 times [2023-08-04 04:32:24,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:24,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726193781] [2023-08-04 04:32:24,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:24,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 04:32:24,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:24,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726193781] [2023-08-04 04:32:24,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726193781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:24,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:24,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-04 04:32:24,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552995350] [2023-08-04 04:32:24,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:24,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-04 04:32:24,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:24,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-04 04:32:24,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-04 04:32:24,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 243 [2023-08-04 04:32:24,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 26 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:24,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:24,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 243 [2023-08-04 04:32:24,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:25,086 INFO L124 PetriNetUnfolderBase]: 37/112 cut-off events. [2023-08-04 04:32:25,086 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2023-08-04 04:32:25,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 112 events. 37/112 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 349 event pairs, 9 based on Foata normal form. 2/114 useless extension candidates. Maximal degree in co-relation 415. Up to 41 conditions per place. [2023-08-04 04:32:25,087 INFO L140 encePairwiseOnDemand]: 235/243 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2023-08-04 04:32:25,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 36 transitions, 281 flow [2023-08-04 04:32:25,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 04:32:25,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 04:32:25,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 785 transitions. [2023-08-04 04:32:25,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4038065843621399 [2023-08-04 04:32:25,089 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 785 transitions. [2023-08-04 04:32:25,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 785 transitions. [2023-08-04 04:32:25,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:25,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 785 transitions. [2023-08-04 04:32:25,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 98.125) internal successors, (785), 8 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:25,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 243.0) internal successors, (2187), 9 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:25,094 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 243.0) internal successors, (2187), 9 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:25,094 INFO L175 Difference]: Start difference. First operand has 60 places, 26 transitions, 162 flow. Second operand 8 states and 785 transitions. [2023-08-04 04:32:25,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 36 transitions, 281 flow [2023-08-04 04:32:25,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 36 transitions, 239 flow, removed 1 selfloop flow, removed 12 redundant places. [2023-08-04 04:32:25,095 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-08-04 04:32:25,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-08-04 04:32:25,096 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2023-08-04 04:32:25,096 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-08-04 04:32:25,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:25,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2023-08-04 04:32:25,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-08-04 04:32:25,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-08-04 04:32:25,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-08-04 04:32:25,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2023-08-04 04:32:25,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2023-08-04 04:32:25,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2023-08-04 04:32:25,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-08-04 04:32:25,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-04 04:32:25,097 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:25,098 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:32:25,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 126 transitions, 270 flow [2023-08-04 04:32:25,114 INFO L124 PetriNetUnfolderBase]: 18/216 cut-off events. [2023-08-04 04:32:25,114 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:32:25,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 216 events. 18/216 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 578 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 133. Up to 8 conditions per place. [2023-08-04 04:32:25,115 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 126 transitions, 270 flow [2023-08-04 04:32:25,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 125 transitions, 268 flow [2023-08-04 04:32:25,116 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:32:25,116 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 125 transitions, 268 flow [2023-08-04 04:32:25,116 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 125 transitions, 268 flow [2023-08-04 04:32:25,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 125 transitions, 268 flow [2023-08-04 04:32:25,130 INFO L124 PetriNetUnfolderBase]: 18/215 cut-off events. [2023-08-04 04:32:25,130 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:32:25,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 215 events. 18/215 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 573 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 132. Up to 8 conditions per place. [2023-08-04 04:32:25,134 INFO L119 LiptonReduction]: Number of co-enabled transitions 5980 [2023-08-04 04:32:26,850 INFO L134 LiptonReduction]: Checked pairs total: 13185 [2023-08-04 04:32:26,850 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-04 04:32:26,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:32:26,852 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;@2e1f466b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:32:26,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:32:26,855 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:32:26,856 INFO L124 PetriNetUnfolderBase]: 4/51 cut-off events. [2023-08-04 04:32:26,856 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:32:26,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:26,856 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 04:32:26,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:32:26,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:26,856 INFO L85 PathProgramCache]: Analyzing trace with hash -967535444, now seen corresponding path program 1 times [2023-08-04 04:32:26,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:26,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146672837] [2023-08-04 04:32:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:26,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:26,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:26,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146672837] [2023-08-04 04:32:26,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146672837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:32:26,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164560765] [2023-08-04 04:32:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:26,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:26,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:26,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:32:26,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 04:32:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:26,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:32:26,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:32:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:26,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:32:26,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164560765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:26,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:32:26,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 04:32:26,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118557263] [2023-08-04 04:32:26,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:26,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:32:26,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:26,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:32:26,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:32:27,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 242 [2023-08-04 04:32:27,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:27,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:27,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 242 [2023-08-04 04:32:27,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:27,196 INFO L124 PetriNetUnfolderBase]: 1604/2677 cut-off events. [2023-08-04 04:32:27,196 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-04 04:32:27,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5368 conditions, 2677 events. 1604/2677 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15711 event pairs, 0 based on Foata normal form. 110/2051 useless extension candidates. Maximal degree in co-relation 934. Up to 2458 conditions per place. [2023-08-04 04:32:27,201 INFO L140 encePairwiseOnDemand]: 235/242 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2023-08-04 04:32:27,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 262 flow [2023-08-04 04:32:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:32:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:32:27,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 582 transitions. [2023-08-04 04:32:27,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809917355371901 [2023-08-04 04:32:27,204 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 582 transitions. [2023-08-04 04:32:27,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 582 transitions. [2023-08-04 04:32:27,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:27,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 582 transitions. [2023-08-04 04:32:27,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:27,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:27,208 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 242.0) internal successors, (1452), 6 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:27,208 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 104 flow. Second operand 5 states and 582 transitions. [2023-08-04 04:32:27,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 262 flow [2023-08-04 04:32:27,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 64 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:32:27,209 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-04 04:32:27,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-04 04:32:27,210 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-08-04 04:32:27,210 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-04 04:32:27,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:27,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:32:27,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 04:32:27,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:27,416 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:32:27,417 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:32:27,417 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:32:27,417 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:32:27,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:32:27 BasicIcfg [2023-08-04 04:32:27,422 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:32:27,423 INFO L158 Benchmark]: Toolchain (without parser) took 16241.41ms. Allocated memory was 453.0MB in the beginning and 654.3MB in the end (delta: 201.3MB). Free memory was 401.8MB in the beginning and 424.0MB in the end (delta: -22.3MB). Peak memory consumption was 181.7MB. Max. memory is 16.0GB. [2023-08-04 04:32:27,423 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 337.6MB. Free memory is still 289.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:32:27,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.55ms. Allocated memory is still 453.0MB. Free memory was 401.5MB in the beginning and 382.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 04:32:27,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.99ms. Allocated memory is still 453.0MB. Free memory was 382.3MB in the beginning and 380.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:32:27,424 INFO L158 Benchmark]: Boogie Preprocessor took 22.88ms. Allocated memory is still 453.0MB. Free memory was 380.2MB in the beginning and 379.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:32:27,424 INFO L158 Benchmark]: RCFGBuilder took 353.68ms. Allocated memory is still 453.0MB. Free memory was 378.7MB in the beginning and 417.3MB in the end (delta: -38.6MB). Peak memory consumption was 20.3MB. Max. memory is 16.0GB. [2023-08-04 04:32:27,424 INFO L158 Benchmark]: TraceAbstraction took 15468.19ms. Allocated memory was 453.0MB in the beginning and 654.3MB in the end (delta: 201.3MB). Free memory was 416.8MB in the beginning and 424.0MB in the end (delta: -7.2MB). Peak memory consumption was 194.9MB. Max. memory is 16.0GB. [2023-08-04 04:32:27,428 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 337.6MB. Free memory is still 289.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 355.55ms. Allocated memory is still 453.0MB. Free memory was 401.5MB in the beginning and 382.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.99ms. Allocated memory is still 453.0MB. Free memory was 382.3MB in the beginning and 380.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.88ms. Allocated memory is still 453.0MB. Free memory was 380.2MB in the beginning and 379.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 353.68ms. Allocated memory is still 453.0MB. Free memory was 378.7MB in the beginning and 417.3MB in the end (delta: -38.6MB). Peak memory consumption was 20.3MB. Max. memory is 16.0GB. * TraceAbstraction took 15468.19ms. Allocated memory was 453.0MB in the beginning and 654.3MB in the end (delta: 201.3MB). Free memory was 416.8MB in the beginning and 424.0MB in the end (delta: -7.2MB). Peak memory consumption was 194.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 90 PlacesBefore, 29 PlacesAfterwards, 93 TransitionsBefore, 28 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 89 TotalNumberOfCompositions, 4165 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2202, independent: 2019, independent conditional: 0, independent unconditional: 2019, dependent: 183, dependent conditional: 0, dependent unconditional: 183, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1160, independent: 1122, independent conditional: 0, independent unconditional: 1122, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2202, independent: 897, independent conditional: 0, independent unconditional: 897, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 1160, unknown conditional: 0, unknown unconditional: 1160] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 89 PlacesBefore, 26 PlacesAfterwards, 92 TransitionsBefore, 24 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 89 TotalNumberOfCompositions, 3547 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2141, independent: 1985, independent conditional: 0, independent unconditional: 1985, dependent: 156, dependent conditional: 0, dependent unconditional: 156, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1155, independent: 1119, independent conditional: 0, independent unconditional: 1119, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2141, independent: 866, independent conditional: 0, independent unconditional: 866, dependent: 120, dependent conditional: 0, dependent unconditional: 120, unknown: 1155, unknown conditional: 0, unknown unconditional: 1155] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 121 PlacesBefore, 44 PlacesAfterwards, 126 TransitionsBefore, 44 TransitionsAfterwards, 5980 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 117 TotalNumberOfCompositions, 13249 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6358, independent: 6107, independent conditional: 0, independent unconditional: 6107, dependent: 251, dependent conditional: 0, dependent unconditional: 251, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3217, independent: 3161, independent conditional: 0, independent unconditional: 3161, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6358, independent: 2946, independent conditional: 0, independent unconditional: 2946, dependent: 195, dependent conditional: 0, dependent unconditional: 195, unknown: 3217, unknown conditional: 0, unknown unconditional: 3217] , Statistics on independence cache: Total cache size (in pairs): 145, Positive cache size: 118, Positive conditional cache size: 0, Positive unconditional cache size: 118, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 120 PlacesBefore, 43 PlacesAfterwards, 125 TransitionsBefore, 43 TransitionsAfterwards, 5980 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 116 TotalNumberOfCompositions, 13185 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6581, independent: 6332, independent conditional: 0, independent unconditional: 6332, dependent: 249, dependent conditional: 0, dependent unconditional: 249, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3268, independent: 3204, independent conditional: 0, independent unconditional: 3204, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6581, independent: 3128, independent conditional: 0, independent unconditional: 3128, dependent: 185, dependent conditional: 0, dependent unconditional: 185, unknown: 3268, unknown conditional: 0, unknown unconditional: 3268] , Statistics on independence cache: Total cache size (in pairs): 183, Positive cache size: 151, Positive conditional cache size: 0, Positive unconditional cache size: 151, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, 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, 117 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 125 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 233 IncrementalHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 10 mSDtfsCounter, 233 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=4, InterpolantAutomatonStates: 15, 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, 0.5s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 89 SizeOfPredicates, 0 NumberOfNonLiveVariables, 93 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 142 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.4s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 920 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 679 mSDsluCounter, 343 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 302 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2201 IncrementalHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 41 mSDtfsCounter, 2201 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 52 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=303occurred in iteration=5, InterpolantAutomatonStates: 63, 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, 1.1s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 656 SizeOfPredicates, 14 NumberOfNonLiveVariables, 384 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 17 InterpolantComputations, 12 PerfectInterpolantSequences, 36/43 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 117 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 142 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.3s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 117 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 117 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 04:32:27,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...