/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_30-traces-oplus-vs-meet_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:01:25,675 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:01:25,751 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:01:25,756 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:01:25,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:01:25,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:01:25,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:01:25,784 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:01:25,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:01:25,788 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:01:25,788 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:01:25,788 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:01:25,789 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:01:25,790 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:01:25,790 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:01:25,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:01:25,791 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:01:25,791 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:01:25,791 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:01:25,791 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:01:25,792 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:01:25,792 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:01:25,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:01:25,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:01:25,794 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:01:25,794 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:01:25,794 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:01:25,794 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:01:25,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:01:25,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:01:25,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:01:25,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:01:25,796 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:01:25,796 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:01:25,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:01:25,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:01:25,797 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:01:25,797 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:01:25,797 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:01:25,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:01:25,797 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:01:25,797 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:01:26,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:01:26,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:01:26,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:01:26,028 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:01:26,028 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:01:26,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_30-traces-oplus-vs-meet_true_bound2.i [2023-08-03 16:01:27,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:01:27,316 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:01:27,316 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_30-traces-oplus-vs-meet_true_bound2.i [2023-08-03 16:01:27,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdacba74b/e9a809692861444a907903f7f0138141/FLAG6362aef8e [2023-08-03 16:01:27,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdacba74b/e9a809692861444a907903f7f0138141 [2023-08-03 16:01:27,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:01:27,344 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:01:27,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:01:27,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:01:27,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:01:27,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:01:27" (1/1) ... [2023-08-03 16:01:27,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b58367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27, skipping insertion in model container [2023-08-03 16:01:27,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:01:27" (1/1) ... [2023-08-03 16:01:27,410 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:01:27,530 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_30-traces-oplus-vs-meet_true_bound2.i[1097,1110] [2023-08-03 16:01:27,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:01:27,676 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:01:27,688 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_30-traces-oplus-vs-meet_true_bound2.i[1097,1110] [2023-08-03 16:01:27,703 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:01:27,709 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:01:27,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:01:27,768 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:01:27,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27 WrapperNode [2023-08-03 16:01:27,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:01:27,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:01:27,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:01:27,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:01:27,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27" (1/1) ... [2023-08-03 16:01:27,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27" (1/1) ... [2023-08-03 16:01:27,821 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-08-03 16:01:27,821 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:01:27,822 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:01:27,822 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:01:27,822 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:01:27,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27" (1/1) ... [2023-08-03 16:01:27,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27" (1/1) ... [2023-08-03 16:01:27,831 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27" (1/1) ... [2023-08-03 16:01:27,831 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27" (1/1) ... [2023-08-03 16:01:27,843 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27" (1/1) ... [2023-08-03 16:01:27,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27" (1/1) ... [2023-08-03 16:01:27,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27" (1/1) ... [2023-08-03 16:01:27,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27" (1/1) ... [2023-08-03 16:01:27,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:01:27,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:01:27,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:01:27,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:01:27,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27" (1/1) ... [2023-08-03 16:01:27,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:01:27,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:01:27,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 16:01:27,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 16:01:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 16:01:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:01:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:01:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:01:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:01:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:01:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:01:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:01:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:01:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:01:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:01:27,914 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 16:01:28,020 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:01:28,022 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:01:28,171 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:01:28,177 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:01:28,177 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 16:01:28,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:01:28 BoogieIcfgContainer [2023-08-03 16:01:28,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:01:28,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:01:28,181 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:01:28,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:01:28,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:01:27" (1/3) ... [2023-08-03 16:01:28,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655c861d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:01:28, skipping insertion in model container [2023-08-03 16:01:28,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:01:27" (2/3) ... [2023-08-03 16:01:28,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655c861d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:01:28, skipping insertion in model container [2023-08-03 16:01:28,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:01:28" (3/3) ... [2023-08-03 16:01:28,186 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_30-traces-oplus-vs-meet_true_bound2.i [2023-08-03 16:01:28,193 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:01:28,201 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:01:28,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 16:01:28,201 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:01:28,243 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 16:01:28,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 90 transitions, 188 flow [2023-08-03 16:01:28,312 INFO L124 PetriNetUnfolderBase]: 8/120 cut-off events. [2023-08-03 16:01:28,312 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 16:01:28,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 120 events. 8/120 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 178 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2023-08-03 16:01:28,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 90 transitions, 188 flow [2023-08-03 16:01:28,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 70 transitions, 145 flow [2023-08-03 16:01:28,323 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:01:28,330 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 70 transitions, 145 flow [2023-08-03 16:01:28,332 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 70 transitions, 145 flow [2023-08-03 16:01:28,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 70 transitions, 145 flow [2023-08-03 16:01:28,352 INFO L124 PetriNetUnfolderBase]: 3/85 cut-off events. [2023-08-03 16:01:28,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:28,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 85 events. 3/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 85 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2023-08-03 16:01:28,365 INFO L119 LiptonReduction]: Number of co-enabled transitions 588 [2023-08-03 16:01:30,587 INFO L134 LiptonReduction]: Checked pairs total: 1370 [2023-08-03 16:01:30,587 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-03 16:01:30,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:01:30,605 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;@1191bfdc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:01:30,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 16:01:30,607 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:01:30,607 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-03 16:01:30,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:30,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:30,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-03 16:01:30,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:30,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:30,612 INFO L85 PathProgramCache]: Analyzing trace with hash 315, now seen corresponding path program 1 times [2023-08-03 16:01:30,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:30,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585314715] [2023-08-03 16:01:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:30,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:30,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:30,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585314715] [2023-08-03 16:01:30,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585314715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:30,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:30,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-03 16:01:30,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12314005] [2023-08-03 16:01:30,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:30,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 16:01:30,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:30,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 16:01:30,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 16:01:30,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 151 [2023-08-03 16:01:30,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 39 flow. Second operand has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:30,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:30,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 151 [2023-08-03 16:01:30,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:30,806 INFO L124 PetriNetUnfolderBase]: 20/80 cut-off events. [2023-08-03 16:01:30,806 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:30,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 80 events. 20/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 239 event pairs, 20 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 122. Up to 56 conditions per place. [2023-08-03 16:01:30,808 INFO L140 encePairwiseOnDemand]: 150/151 looper letters, 11 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2023-08-03 16:01:30,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 16 transitions, 59 flow [2023-08-03 16:01:30,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 16:01:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 16:01:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 176 transitions. [2023-08-03 16:01:30,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5827814569536424 [2023-08-03 16:01:30,825 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 176 transitions. [2023-08-03 16:01:30,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 176 transitions. [2023-08-03 16:01:30,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:30,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 176 transitions. [2023-08-03 16:01:30,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 88.0) internal successors, (176), 2 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:30,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:30,840 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:30,841 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 39 flow. Second operand 2 states and 176 transitions. [2023-08-03 16:01:30,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 16 transitions, 59 flow [2023-08-03 16:01:30,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 59 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:01:30,844 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 37 flow [2023-08-03 16:01:30,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=37, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2023-08-03 16:01:30,849 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 0 predicate places. [2023-08-03 16:01:30,850 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 37 flow [2023-08-03 16:01:30,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:30,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:30,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:01:30,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:01:30,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:30,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:30,853 INFO L85 PathProgramCache]: Analyzing trace with hash 9666944, now seen corresponding path program 1 times [2023-08-03 16:01:30,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:30,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552277822] [2023-08-03 16:01:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:30,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:30,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:30,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552277822] [2023-08-03 16:01:30,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552277822] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:30,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:30,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:01:30,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764339665] [2023-08-03 16:01:30,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:30,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:30,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:30,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:30,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:30,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 151 [2023-08-03 16:01:30,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:30,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:30,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 151 [2023-08-03 16:01:30,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:31,012 INFO L124 PetriNetUnfolderBase]: 20/61 cut-off events. [2023-08-03 16:01:31,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:31,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 61 events. 20/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 197 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 120. Up to 46 conditions per place. [2023-08-03 16:01:31,013 INFO L140 encePairwiseOnDemand]: 148/151 looper letters, 14 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-03 16:01:31,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 21 transitions, 79 flow [2023-08-03 16:01:31,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:31,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:31,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-08-03 16:01:31,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540838852097131 [2023-08-03 16:01:31,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-08-03 16:01:31,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-08-03 16:01:31,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:31,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-08-03 16:01:31,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-03 16:01:31,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:31,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:31,019 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 37 flow. Second operand 3 states and 251 transitions. [2023-08-03 16:01:31,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 21 transitions, 79 flow [2023-08-03 16:01:31,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 79 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:01:31,020 INFO L231 Difference]: Finished difference. Result has 23 places, 16 transitions, 45 flow [2023-08-03 16:01:31,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=151, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2023-08-03 16:01:31,021 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2023-08-03 16:01:31,021 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 45 flow [2023-08-03 16:01:31,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:31,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:31,021 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:01:31,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:01:31,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:31,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:31,022 INFO L85 PathProgramCache]: Analyzing trace with hash 708521489, now seen corresponding path program 1 times [2023-08-03 16:01:31,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:31,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681068711] [2023-08-03 16:01:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:31,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:01:31,073 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:01:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:01:31,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:01:31,104 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:01:31,105 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 16:01:31,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 16:01:31,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 16:01:31,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:01:31,107 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 16:01:31,109 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:01:31,109 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:01:31,129 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 16:01:31,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 106 transitions, 230 flow [2023-08-03 16:01:31,173 INFO L124 PetriNetUnfolderBase]: 14/190 cut-off events. [2023-08-03 16:01:31,173 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 16:01:31,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 190 events. 14/190 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 408 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 122. Up to 8 conditions per place. [2023-08-03 16:01:31,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 106 transitions, 230 flow [2023-08-03 16:01:31,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 85 transitions, 182 flow [2023-08-03 16:01:31,177 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:01:31,177 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 85 transitions, 182 flow [2023-08-03 16:01:31,177 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 85 transitions, 182 flow [2023-08-03 16:01:31,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 85 transitions, 182 flow [2023-08-03 16:01:31,190 INFO L124 PetriNetUnfolderBase]: 4/120 cut-off events. [2023-08-03 16:01:31,190 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:01:31,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 120 events. 4/120 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 170 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-08-03 16:01:31,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 1596 [2023-08-03 16:01:33,281 INFO L134 LiptonReduction]: Checked pairs total: 4886 [2023-08-03 16:01:33,281 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-03 16:01:33,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:01:33,284 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;@1191bfdc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:01:33,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 16:01:33,284 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:01:33,284 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-03 16:01:33,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:01:33,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:33,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-03 16:01:33,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:33,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:33,285 INFO L85 PathProgramCache]: Analyzing trace with hash 503, now seen corresponding path program 1 times [2023-08-03 16:01:33,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:33,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714064042] [2023-08-03 16:01:33,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:33,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:33,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:33,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714064042] [2023-08-03 16:01:33,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714064042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:33,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:33,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-03 16:01:33,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398077164] [2023-08-03 16:01:33,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:33,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 16:01:33,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:33,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 16:01:33,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 16:01:33,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 172 [2023-08-03 16:01:33,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 66 flow. Second operand has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:33,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 172 [2023-08-03 16:01:33,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:33,377 INFO L124 PetriNetUnfolderBase]: 355/751 cut-off events. [2023-08-03 16:01:33,377 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-03 16:01:33,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 751 events. 355/751 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4037 event pairs, 355 based on Foata normal form. 0/705 useless extension candidates. Maximal degree in co-relation 213. Up to 613 conditions per place. [2023-08-03 16:01:33,382 INFO L140 encePairwiseOnDemand]: 171/172 looper letters, 18 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-03 16:01:33,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 100 flow [2023-08-03 16:01:33,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 16:01:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 16:01:33,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 211 transitions. [2023-08-03 16:01:33,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6133720930232558 [2023-08-03 16:01:33,384 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 211 transitions. [2023-08-03 16:01:33,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 211 transitions. [2023-08-03 16:01:33,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:33,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 211 transitions. [2023-08-03 16:01:33,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,386 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,387 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 66 flow. Second operand 2 states and 211 transitions. [2023-08-03 16:01:33,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 100 flow [2023-08-03 16:01:33,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 98 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:01:33,388 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 62 flow [2023-08-03 16:01:33,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-03 16:01:33,389 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2023-08-03 16:01:33,389 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 62 flow [2023-08-03 16:01:33,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:33,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:01:33,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 16:01:33,390 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:33,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:33,390 INFO L85 PathProgramCache]: Analyzing trace with hash 15453028, now seen corresponding path program 1 times [2023-08-03 16:01:33,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:33,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048019140] [2023-08-03 16:01:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:33,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:33,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:33,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048019140] [2023-08-03 16:01:33,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048019140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:33,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:33,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:01:33,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868030380] [2023-08-03 16:01:33,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:33,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:33,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:33,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:33,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 172 [2023-08-03 16:01:33,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:33,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 172 [2023-08-03 16:01:33,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:33,539 INFO L124 PetriNetUnfolderBase]: 355/733 cut-off events. [2023-08-03 16:01:33,540 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 16:01:33,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 733 events. 355/733 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3902 event pairs, 190 based on Foata normal form. 0/691 useless extension candidates. Maximal degree in co-relation 1368. Up to 602 conditions per place. [2023-08-03 16:01:33,546 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 23 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-03 16:01:33,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 126 flow [2023-08-03 16:01:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-08-03 16:01:33,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5852713178294574 [2023-08-03 16:01:33,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-08-03 16:01:33,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-08-03 16:01:33,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:33,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-08-03 16:01:33,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,557 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,557 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 62 flow. Second operand 3 states and 302 transitions. [2023-08-03 16:01:33,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 126 flow [2023-08-03 16:01:33,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:01:33,559 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 74 flow [2023-08-03 16:01:33,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-08-03 16:01:33,559 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-08-03 16:01:33,560 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 74 flow [2023-08-03 16:01:33,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:33,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:33,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 16:01:33,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:33,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:33,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2053038019, now seen corresponding path program 1 times [2023-08-03 16:01:33,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:33,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018673564] [2023-08-03 16:01:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:33,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:33,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:33,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018673564] [2023-08-03 16:01:33,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018673564] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:01:33,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983096115] [2023-08-03 16:01:33,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:33,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:01:33,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:01:33,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:01:33,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 16:01:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:33,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:01:33,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:01:33,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:33,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:01:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:33,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983096115] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:01:33,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:01:33,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-03 16:01:33,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802334386] [2023-08-03 16:01:33,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:01:33,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:01:33,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:33,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:01:33,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:01:33,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 172 [2023-08-03 16:01:33,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:33,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 172 [2023-08-03 16:01:33,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:33,844 INFO L124 PetriNetUnfolderBase]: 340/634 cut-off events. [2023-08-03 16:01:33,844 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-08-03 16:01:33,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 634 events. 340/634 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3134 event pairs, 54 based on Foata normal form. 6/634 useless extension candidates. Maximal degree in co-relation 1327. Up to 385 conditions per place. [2023-08-03 16:01:33,847 INFO L140 encePairwiseOnDemand]: 168/172 looper letters, 32 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2023-08-03 16:01:33,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 180 flow [2023-08-03 16:01:33,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:01:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:01:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 401 transitions. [2023-08-03 16:01:33,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5828488372093024 [2023-08-03 16:01:33,849 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 401 transitions. [2023-08-03 16:01:33,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 401 transitions. [2023-08-03 16:01:33,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:33,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 401 transitions. [2023-08-03 16:01:33,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,853 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,853 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 74 flow. Second operand 4 states and 401 transitions. [2023-08-03 16:01:33,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 180 flow [2023-08-03 16:01:33,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:01:33,855 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 92 flow [2023-08-03 16:01:33,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-03 16:01:33,855 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2023-08-03 16:01:33,856 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 92 flow [2023-08-03 16:01:33,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:33,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:33,856 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:01:33,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:01:34,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-03 16:01:34,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:34,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:34,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1958654635, now seen corresponding path program 1 times [2023-08-03 16:01:34,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:34,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379844685] [2023-08-03 16:01:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:34,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:01:34,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:34,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379844685] [2023-08-03 16:01:34,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379844685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:34,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:34,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:01:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210283773] [2023-08-03 16:01:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:34,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:01:34,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 172 [2023-08-03 16:01:34,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:34,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 172 [2023-08-03 16:01:34,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:34,240 INFO L124 PetriNetUnfolderBase]: 280/514 cut-off events. [2023-08-03 16:01:34,240 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2023-08-03 16:01:34,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 514 events. 280/514 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2349 event pairs, 43 based on Foata normal form. 36/544 useless extension candidates. Maximal degree in co-relation 1216. Up to 384 conditions per place. [2023-08-03 16:01:34,243 INFO L140 encePairwiseOnDemand]: 169/172 looper letters, 32 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-03 16:01:34,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 42 transitions, 186 flow [2023-08-03 16:01:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:01:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:01:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2023-08-03 16:01:34,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709302325581396 [2023-08-03 16:01:34,245 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2023-08-03 16:01:34,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2023-08-03 16:01:34,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:34,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2023-08-03 16:01:34,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,249 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,249 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 92 flow. Second operand 5 states and 491 transitions. [2023-08-03 16:01:34,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 42 transitions, 186 flow [2023-08-03 16:01:34,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 179 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 16:01:34,252 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 81 flow [2023-08-03 16:01:34,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=81, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2023-08-03 16:01:34,253 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2023-08-03 16:01:34,253 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 81 flow [2023-08-03 16:01:34,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:34,254 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:34,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:01:34,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:34,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:34,255 INFO L85 PathProgramCache]: Analyzing trace with hash 588744001, now seen corresponding path program 1 times [2023-08-03 16:01:34,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:34,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234942633] [2023-08-03 16:01:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:34,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:01:34,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:34,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234942633] [2023-08-03 16:01:34,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234942633] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:34,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:34,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 16:01:34,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009062014] [2023-08-03 16:01:34,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:34,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:34,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:34,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:34,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:34,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 172 [2023-08-03 16:01:34,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:34,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 172 [2023-08-03 16:01:34,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:34,449 INFO L124 PetriNetUnfolderBase]: 331/705 cut-off events. [2023-08-03 16:01:34,449 INFO L125 PetriNetUnfolderBase]: For 471/471 co-relation queries the response was YES. [2023-08-03 16:01:34,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544 conditions, 705 events. 331/705 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3838 event pairs, 194 based on Foata normal form. 31/719 useless extension candidates. Maximal degree in co-relation 1537. Up to 371 conditions per place. [2023-08-03 16:01:34,453 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 32 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2023-08-03 16:01:34,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 210 flow [2023-08-03 16:01:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:34,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:34,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-08-03 16:01:34,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5988372093023255 [2023-08-03 16:01:34,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-08-03 16:01:34,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-08-03 16:01:34,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:34,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-08-03 16:01:34,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,457 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 81 flow. Second operand 3 states and 309 transitions. [2023-08-03 16:01:34,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 210 flow [2023-08-03 16:01:34,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 202 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:01:34,460 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 114 flow [2023-08-03 16:01:34,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-08-03 16:01:34,462 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2023-08-03 16:01:34,462 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 114 flow [2023-08-03 16:01:34,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:34,462 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:34,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 16:01:34,462 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:34,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1302038120, now seen corresponding path program 1 times [2023-08-03 16:01:34,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:34,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749552528] [2023-08-03 16:01:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:34,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:01:34,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:34,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749552528] [2023-08-03 16:01:34,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749552528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:34,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:34,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:01:34,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290323499] [2023-08-03 16:01:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:34,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:01:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:01:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:01:34,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 172 [2023-08-03 16:01:34,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:34,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 172 [2023-08-03 16:01:34,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:34,701 INFO L124 PetriNetUnfolderBase]: 241/556 cut-off events. [2023-08-03 16:01:34,701 INFO L125 PetriNetUnfolderBase]: For 572/572 co-relation queries the response was YES. [2023-08-03 16:01:34,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 556 events. 241/556 cut-off events. For 572/572 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2746 event pairs, 111 based on Foata normal form. 127/683 useless extension candidates. Maximal degree in co-relation 1518. Up to 287 conditions per place. [2023-08-03 16:01:34,704 INFO L140 encePairwiseOnDemand]: 161/172 looper letters, 29 selfloop transitions, 11 changer transitions 5/48 dead transitions. [2023-08-03 16:01:34,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 270 flow [2023-08-03 16:01:34,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:01:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:01:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-03 16:01:34,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562015503875969 [2023-08-03 16:01:34,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-03 16:01:34,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-03 16:01:34,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:34,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-03 16:01:34,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,709 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 114 flow. Second operand 3 states and 290 transitions. [2023-08-03 16:01:34,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 270 flow [2023-08-03 16:01:34,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:01:34,712 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 149 flow [2023-08-03 16:01:34,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-08-03 16:01:34,714 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-08-03 16:01:34,714 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 149 flow [2023-08-03 16:01:34,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:01:34,715 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:34,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 16:01:34,715 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:01:34,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:01:34,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1528559407, now seen corresponding path program 1 times [2023-08-03 16:01:34,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:01:34,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406737393] [2023-08-03 16:01:34,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:01:34,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:01:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:01:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:01:34,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:01:34,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406737393] [2023-08-03 16:01:34,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406737393] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:01:34,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:01:34,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 16:01:34,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849833886] [2023-08-03 16:01:34,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:01:34,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:01:34,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:01:34,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:01:34,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:01:34,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 172 [2023-08-03 16:01:34,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:34,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:01:34,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 172 [2023-08-03 16:01:34,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:01:35,029 INFO L124 PetriNetUnfolderBase]: 57/193 cut-off events. [2023-08-03 16:01:35,029 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2023-08-03 16:01:35,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 193 events. 57/193 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 766 event pairs, 9 based on Foata normal form. 60/253 useless extension candidates. Maximal degree in co-relation 653. Up to 143 conditions per place. [2023-08-03 16:01:35,030 INFO L140 encePairwiseOnDemand]: 166/172 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2023-08-03 16:01:35,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 32 transitions, 214 flow [2023-08-03 16:01:35,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:01:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:01:35,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2023-08-03 16:01:35,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2023-08-03 16:01:35,032 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2023-08-03 16:01:35,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2023-08-03 16:01:35,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:01:35,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2023-08-03 16:01:35,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:35,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:35,035 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 172.0) internal successors, (860), 5 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:35,035 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 149 flow. Second operand 4 states and 360 transitions. [2023-08-03 16:01:35,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 32 transitions, 214 flow [2023-08-03 16:01:35,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 192 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:01:35,036 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-03 16:01:35,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-03 16:01:35,037 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2023-08-03 16:01:35,037 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-03 16:01:35,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:01:35,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 16:01:35,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 16:01:35,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 16:01:35,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 16:01:35,038 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:01:35,040 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:01:35,040 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:01:35,043 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:01:35 BasicIcfg [2023-08-03 16:01:35,043 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:01:35,043 INFO L158 Benchmark]: Toolchain (without parser) took 7699.48ms. Allocated memory was 553.6MB in the beginning and 664.8MB in the end (delta: 111.1MB). Free memory was 512.2MB in the beginning and 593.6MB in the end (delta: -81.4MB). Peak memory consumption was 30.2MB. Max. memory is 16.0GB. [2023-08-03 16:01:35,044 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 373.3MB. Free memory is still 326.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:01:35,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 423.55ms. Allocated memory is still 553.6MB. Free memory was 512.2MB in the beginning and 492.6MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 16:01:35,044 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.04ms. Allocated memory is still 553.6MB. Free memory was 492.6MB in the beginning and 490.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:01:35,044 INFO L158 Benchmark]: Boogie Preprocessor took 28.33ms. Allocated memory is still 553.6MB. Free memory was 490.9MB in the beginning and 489.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:01:35,044 INFO L158 Benchmark]: RCFGBuilder took 322.96ms. Allocated memory is still 553.6MB. Free memory was 489.2MB in the beginning and 475.1MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 16:01:35,045 INFO L158 Benchmark]: TraceAbstraction took 6862.37ms. Allocated memory was 553.6MB in the beginning and 664.8MB in the end (delta: 111.1MB). Free memory was 474.5MB in the beginning and 593.6MB in the end (delta: -119.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:01:35,046 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 373.3MB. Free memory is still 326.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 423.55ms. Allocated memory is still 553.6MB. Free memory was 512.2MB in the beginning and 492.6MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.04ms. Allocated memory is still 553.6MB. Free memory was 492.6MB in the beginning and 490.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.33ms. Allocated memory is still 553.6MB. Free memory was 490.9MB in the beginning and 489.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 322.96ms. Allocated memory is still 553.6MB. Free memory was 489.2MB in the beginning and 475.1MB in the end (delta: 14.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 6862.37ms. Allocated memory was 553.6MB in the beginning and 664.8MB in the end (delta: 111.1MB). Free memory was 474.5MB in the beginning and 593.6MB in the end (delta: -119.1MB). There was no memory consumed. 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, 71 PlacesBefore, 20 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 588 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 61 TotalNumberOfCompositions, 1370 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 858, independent: 742, independent conditional: 0, independent unconditional: 742, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 315, independent: 293, independent conditional: 0, independent unconditional: 293, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 858, independent: 449, independent conditional: 0, independent unconditional: 449, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 315, unknown conditional: 0, unknown unconditional: 315] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 88 PlacesBefore, 32 PlacesAfterwards, 85 TransitionsBefore, 27 TransitionsAfterwards, 1596 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 4886 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1475, independent: 1264, independent conditional: 0, independent unconditional: 1264, dependent: 211, dependent conditional: 0, dependent unconditional: 211, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 686, independent: 657, independent conditional: 0, independent unconditional: 657, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1475, independent: 607, independent conditional: 0, independent unconditional: 607, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 686, unknown conditional: 0, unknown unconditional: 686] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 101 locations, 3 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: 2.8s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=2, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 116 locations, 3 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: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 254 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 534 IncrementalHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 44 mSDtfsCounter, 534 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=6, InterpolantAutomatonStates: 24, 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, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 271 SizeOfPredicates, 0 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 26/29 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 16:01:35,061 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...