/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/pthread-wmm_safe026_tso_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:46:07,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:46:07,143 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:46:07,145 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:46:07,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:46:07,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:46:07,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:46:07,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:46:07,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:46:07,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:46:07,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:46:07,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:46:07,161 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:46:07,161 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:46:07,161 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:46:07,161 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:46:07,162 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:46:07,162 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:46:07,162 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:46:07,162 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:46:07,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:46:07,163 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:46:07,163 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:46:07,163 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:46:07,164 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:46:07,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:46:07,164 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:46:07,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:46:07,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:46:07,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:46:07,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:46:07,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:46:07,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:46:07,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:46:07,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:46:07,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:46:07,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:46:07,166 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:46:07,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:46:07,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:46:07,166 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:46:07,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:46:07,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:46:07,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:46:07,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:46:07,357 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:46:07,357 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:46:07,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe026_tso_bound2.i [2023-08-03 18:46:08,372 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:46:08,557 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:46:08,557 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe026_tso_bound2.i [2023-08-03 18:46:08,583 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25810861e/8ef974a074634fe5b93d5923d92b29c6/FLAG5c12dda25 [2023-08-03 18:46:08,600 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25810861e/8ef974a074634fe5b93d5923d92b29c6 [2023-08-03 18:46:08,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:46:08,605 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:46:08,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:46:08,607 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:46:08,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:46:08,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:46:08" (1/1) ... [2023-08-03 18:46:08,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eab42d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08, skipping insertion in model container [2023-08-03 18:46:08,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:46:08" (1/1) ... [2023-08-03 18:46:08,653 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:46:08,796 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe026_tso_bound2.i[945,958] [2023-08-03 18:46:08,907 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:46:08,916 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:46:08,926 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe026_tso_bound2.i[945,958] [2023-08-03 18:46:08,942 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:46:08,943 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:46:08,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:46:08,977 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:46:08,977 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:46:08,981 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:46:08,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08 WrapperNode [2023-08-03 18:46:08,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:46:08,982 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:46:08,982 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:46:08,982 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:46:08,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08" (1/1) ... [2023-08-03 18:46:08,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08" (1/1) ... [2023-08-03 18:46:09,007 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 94 [2023-08-03 18:46:09,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:46:09,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:46:09,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:46:09,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:46:09,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08" (1/1) ... [2023-08-03 18:46:09,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08" (1/1) ... [2023-08-03 18:46:09,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08" (1/1) ... [2023-08-03 18:46:09,015 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08" (1/1) ... [2023-08-03 18:46:09,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08" (1/1) ... [2023-08-03 18:46:09,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08" (1/1) ... [2023-08-03 18:46:09,021 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08" (1/1) ... [2023-08-03 18:46:09,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08" (1/1) ... [2023-08-03 18:46:09,024 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:46:09,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:46:09,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:46:09,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:46:09,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08" (1/1) ... [2023-08-03 18:46:09,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:46:09,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:46:09,066 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 18:46:09,070 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 18:46:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:46:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:46:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:46:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:46:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:46:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:46:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:46:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:46:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:46:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:46:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:46:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:46:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:46:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:46:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:46:09,090 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 18:46:09,179 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:46:09,180 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:46:09,368 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:46:09,372 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:46:09,373 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:46:09,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:46:09 BoogieIcfgContainer [2023-08-03 18:46:09,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:46:09,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:46:09,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:46:09,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:46:09,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:46:08" (1/3) ... [2023-08-03 18:46:09,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbbe047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:46:09, skipping insertion in model container [2023-08-03 18:46:09,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:46:08" (2/3) ... [2023-08-03 18:46:09,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbbe047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:46:09, skipping insertion in model container [2023-08-03 18:46:09,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:46:09" (3/3) ... [2023-08-03 18:46:09,379 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe026_tso_bound2.i [2023-08-03 18:46:09,384 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:46:09,390 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:46:09,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 18:46:09,390 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:46:09,425 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:46:09,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 104 transitions, 223 flow [2023-08-03 18:46:09,549 INFO L124 PetriNetUnfolderBase]: 30/411 cut-off events. [2023-08-03 18:46:09,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:46:09,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 411 events. 30/411 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1832 event pairs, 0 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 240. Up to 16 conditions per place. [2023-08-03 18:46:09,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 104 transitions, 223 flow [2023-08-03 18:46:09,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 92 transitions, 199 flow [2023-08-03 18:46:09,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:46:09,570 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 92 transitions, 199 flow [2023-08-03 18:46:09,573 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 92 transitions, 199 flow [2023-08-03 18:46:09,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 92 transitions, 199 flow [2023-08-03 18:46:09,626 INFO L124 PetriNetUnfolderBase]: 22/315 cut-off events. [2023-08-03 18:46:09,627 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:46:09,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 315 events. 22/315 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1309 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 192. Up to 16 conditions per place. [2023-08-03 18:46:09,631 INFO L119 LiptonReduction]: Number of co-enabled transitions 1586 [2023-08-03 18:46:10,919 INFO L134 LiptonReduction]: Checked pairs total: 2531 [2023-08-03 18:46:10,919 INFO L136 LiptonReduction]: Total number of compositions: 72 [2023-08-03 18:46:10,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:46:10,932 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;@5ad12753, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:46:10,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 18:46:10,935 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:46:10,935 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-03 18:46:10,935 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:46:10,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:10,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 18:46:10,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:10,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:10,941 INFO L85 PathProgramCache]: Analyzing trace with hash 347923340, now seen corresponding path program 1 times [2023-08-03 18:46:10,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:10,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951657945] [2023-08-03 18:46:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:10,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:11,131 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 18:46:11,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:11,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951657945] [2023-08-03 18:46:11,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951657945] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:46:11,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:46:11,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:46:11,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384701391] [2023-08-03 18:46:11,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:46:11,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:46:11,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:11,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:46:11,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:46:11,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 176 [2023-08-03 18:46:11,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:11,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:11,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 176 [2023-08-03 18:46:11,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:11,267 INFO L124 PetriNetUnfolderBase]: 400/751 cut-off events. [2023-08-03 18:46:11,267 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 18:46:11,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 751 events. 400/751 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3691 event pairs, 222 based on Foata normal form. 0/688 useless extension candidates. Maximal degree in co-relation 1459. Up to 668 conditions per place. [2023-08-03 18:46:11,273 INFO L140 encePairwiseOnDemand]: 173/176 looper letters, 21 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-03 18:46:11,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 117 flow [2023-08-03 18:46:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:46:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:46:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-03 18:46:11,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2023-08-03 18:46:11,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-03 18:46:11,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-03 18:46:11,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:11,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-03 18:46:11,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:11,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:11,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:11,295 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 65 flow. Second operand 3 states and 297 transitions. [2023-08-03 18:46:11,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 117 flow [2023-08-03 18:46:11,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 117 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:46:11,298 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 73 flow [2023-08-03 18:46:11,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-08-03 18:46:11,302 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-08-03 18:46:11,302 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 73 flow [2023-08-03 18:46:11,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:11,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:11,302 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:46:11,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:46:11,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:11,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:11,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2108485830, now seen corresponding path program 1 times [2023-08-03 18:46:11,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:11,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77716178] [2023-08-03 18:46:11,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:11,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:46:11,322 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:46:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:46:11,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:46:11,340 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:46:11,341 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 18:46:11,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 18:46:11,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 18:46:11,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 18:46:11,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:46:11,343 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:46:11,344 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:46:11,344 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:46:11,358 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:46:11,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 124 transitions, 284 flow [2023-08-03 18:46:11,449 INFO L124 PetriNetUnfolderBase]: 93/1297 cut-off events. [2023-08-03 18:46:11,449 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:46:11,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 1297 events. 93/1297 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8798 event pairs, 0 based on Foata normal form. 0/1138 useless extension candidates. Maximal degree in co-relation 938. Up to 54 conditions per place. [2023-08-03 18:46:11,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 124 transitions, 284 flow [2023-08-03 18:46:11,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 112 transitions, 260 flow [2023-08-03 18:46:11,455 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:46:11,455 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 112 transitions, 260 flow [2023-08-03 18:46:11,455 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 112 transitions, 260 flow [2023-08-03 18:46:11,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 112 transitions, 260 flow [2023-08-03 18:46:11,542 INFO L124 PetriNetUnfolderBase]: 66/973 cut-off events. [2023-08-03 18:46:11,543 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:46:11,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 973 events. 66/973 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6120 event pairs, 0 based on Foata normal form. 0/868 useless extension candidates. Maximal degree in co-relation 722. Up to 54 conditions per place. [2023-08-03 18:46:11,554 INFO L119 LiptonReduction]: Number of co-enabled transitions 3852 [2023-08-03 18:46:12,992 INFO L134 LiptonReduction]: Checked pairs total: 7235 [2023-08-03 18:46:12,993 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-03 18:46:12,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:46:13,001 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;@5ad12753, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:46:13,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 18:46:13,003 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:46:13,005 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-03 18:46:13,005 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:46:13,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:13,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 18:46:13,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:13,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:13,010 INFO L85 PathProgramCache]: Analyzing trace with hash 18149694, now seen corresponding path program 1 times [2023-08-03 18:46:13,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:13,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726421134] [2023-08-03 18:46:13,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:13,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:13,075 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 18:46:13,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:13,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726421134] [2023-08-03 18:46:13,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726421134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:46:13,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:46:13,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:46:13,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686721644] [2023-08-03 18:46:13,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:46:13,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:46:13,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:13,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:46:13,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:46:13,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 205 [2023-08-03 18:46:13,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:13,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:13,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 205 [2023-08-03 18:46:13,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:16,234 INFO L124 PetriNetUnfolderBase]: 33046/47186 cut-off events. [2023-08-03 18:46:16,234 INFO L125 PetriNetUnfolderBase]: For 1848/1848 co-relation queries the response was YES. [2023-08-03 18:46:16,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93375 conditions, 47186 events. 33046/47186 cut-off events. For 1848/1848 co-relation queries the response was YES. Maximal size of possible extension queue 1516. Compared 318132 event pairs, 26064 based on Foata normal form. 0/44968 useless extension candidates. Maximal degree in co-relation 26464. Up to 43520 conditions per place. [2023-08-03 18:46:16,454 INFO L140 encePairwiseOnDemand]: 201/205 looper letters, 31 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-03 18:46:16,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 43 transitions, 188 flow [2023-08-03 18:46:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:46:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:46:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-08-03 18:46:16,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.583739837398374 [2023-08-03 18:46:16,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-08-03 18:46:16,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-08-03 18:46:16,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:16,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-08-03 18:46:16,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:16,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:16,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:16,460 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 116 flow. Second operand 3 states and 359 transitions. [2023-08-03 18:46:16,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 43 transitions, 188 flow [2023-08-03 18:46:16,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 182 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 18:46:16,464 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 120 flow [2023-08-03 18:46:16,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-08-03 18:46:16,465 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-08-03 18:46:16,465 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 120 flow [2023-08-03 18:46:16,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:16,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:16,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:46:16,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:46:16,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:16,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:16,466 INFO L85 PathProgramCache]: Analyzing trace with hash -26648328, now seen corresponding path program 1 times [2023-08-03 18:46:16,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:16,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285272200] [2023-08-03 18:46:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:16,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:16,507 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 18:46:16,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285272200] [2023-08-03 18:46:16,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285272200] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:46:16,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255181347] [2023-08-03 18:46:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:16,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:16,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:46:16,510 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 18:46:16,529 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 18:46:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:16,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:46:16,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:46:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:46:16,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:46:16,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255181347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:46:16,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:46:16,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:46:16,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413460040] [2023-08-03 18:46:16,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:46:16,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:46:16,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:16,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:46:16,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:46:16,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 205 [2023-08-03 18:46:16,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:16,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:16,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 205 [2023-08-03 18:46:16,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:19,187 INFO L124 PetriNetUnfolderBase]: 31406/45080 cut-off events. [2023-08-03 18:46:19,187 INFO L125 PetriNetUnfolderBase]: For 1215/1215 co-relation queries the response was YES. [2023-08-03 18:46:19,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88432 conditions, 45080 events. 31406/45080 cut-off events. For 1215/1215 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 304606 event pairs, 24928 based on Foata normal form. 0/43027 useless extension candidates. Maximal degree in co-relation 88395. Up to 40987 conditions per place. [2023-08-03 18:46:19,601 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 36 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-03 18:46:19,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 212 flow [2023-08-03 18:46:19,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:46:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:46:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-03 18:46:19,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886178861788618 [2023-08-03 18:46:19,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-03 18:46:19,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-03 18:46:19,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:19,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-03 18:46:19,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:19,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:19,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:19,607 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 120 flow. Second operand 3 states and 362 transitions. [2023-08-03 18:46:19,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 212 flow [2023-08-03 18:46:19,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:46:19,609 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 130 flow [2023-08-03 18:46:19,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2023-08-03 18:46:19,611 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2023-08-03 18:46:19,611 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 130 flow [2023-08-03 18:46:19,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:19,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:19,611 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:46:19,620 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 18:46:19,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:19,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:19,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:19,813 INFO L85 PathProgramCache]: Analyzing trace with hash -224131669, now seen corresponding path program 1 times [2023-08-03 18:46:19,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:19,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832439831] [2023-08-03 18:46:19,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:19,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:19,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:46:19,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:19,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832439831] [2023-08-03 18:46:19,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832439831] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:46:19,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534795744] [2023-08-03 18:46:19,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:19,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:19,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:46:19,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:46:19,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 18:46:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:19,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:46:19,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:46:19,989 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 18:46:19,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:46:19,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534795744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:46:19,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:46:19,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 18:46:19,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291483283] [2023-08-03 18:46:19,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:46:19,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:46:19,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:19,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:46:19,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:46:20,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 205 [2023-08-03 18:46:20,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:20,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:20,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 205 [2023-08-03 18:46:20,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:22,183 INFO L124 PetriNetUnfolderBase]: 31394/45039 cut-off events. [2023-08-03 18:46:22,183 INFO L125 PetriNetUnfolderBase]: For 1503/1503 co-relation queries the response was YES. [2023-08-03 18:46:22,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88701 conditions, 45039 events. 31394/45039 cut-off events. For 1503/1503 co-relation queries the response was YES. Maximal size of possible extension queue 1557. Compared 304178 event pairs, 20088 based on Foata normal form. 9/43139 useless extension candidates. Maximal degree in co-relation 25250. Up to 41065 conditions per place. [2023-08-03 18:46:22,475 INFO L140 encePairwiseOnDemand]: 201/205 looper letters, 35 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2023-08-03 18:46:22,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 48 transitions, 225 flow [2023-08-03 18:46:22,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:46:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:46:22,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2023-08-03 18:46:22,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2023-08-03 18:46:22,478 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2023-08-03 18:46:22,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2023-08-03 18:46:22,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:22,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2023-08-03 18:46:22,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:22,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:22,482 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:22,482 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 130 flow. Second operand 5 states and 574 transitions. [2023-08-03 18:46:22,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 48 transitions, 225 flow [2023-08-03 18:46:22,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 48 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:46:22,484 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 146 flow [2023-08-03 18:46:22,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2023-08-03 18:46:22,484 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2023-08-03 18:46:22,484 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 146 flow [2023-08-03 18:46:22,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:22,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:22,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:46:22,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 18:46:22,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:22,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:22,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:22,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2129776772, now seen corresponding path program 1 times [2023-08-03 18:46:22,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:22,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401625496] [2023-08-03 18:46:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:22,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:22,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:46:22,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:22,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401625496] [2023-08-03 18:46:22,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401625496] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:46:22,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999795787] [2023-08-03 18:46:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:22,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:22,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:46:22,743 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:46:22,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 18:46:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:22,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:46:22,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:46:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 18:46:22,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:46:22,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999795787] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:46:22,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:46:22,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:46:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061431784] [2023-08-03 18:46:22,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:46:22,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:46:22,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:22,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:46:22,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:46:22,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 205 [2023-08-03 18:46:22,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:22,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:22,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 205 [2023-08-03 18:46:22,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:25,820 INFO L124 PetriNetUnfolderBase]: 30722/43544 cut-off events. [2023-08-03 18:46:25,820 INFO L125 PetriNetUnfolderBase]: For 889/889 co-relation queries the response was YES. [2023-08-03 18:46:25,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86252 conditions, 43544 events. 30722/43544 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 1551. Compared 289156 event pairs, 23570 based on Foata normal form. 0/41815 useless extension candidates. Maximal degree in co-relation 24560. Up to 37736 conditions per place. [2023-08-03 18:46:25,999 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 42 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-03 18:46:26,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 258 flow [2023-08-03 18:46:26,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:46:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:46:26,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-08-03 18:46:26,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5951219512195122 [2023-08-03 18:46:26,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-08-03 18:46:26,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-08-03 18:46:26,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:26,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-08-03 18:46:26,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:26,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:26,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:26,004 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 146 flow. Second operand 3 states and 366 transitions. [2023-08-03 18:46:26,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 258 flow [2023-08-03 18:46:26,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 53 transitions, 251 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 18:46:26,007 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 151 flow [2023-08-03 18:46:26,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2023-08-03 18:46:26,010 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2023-08-03 18:46:26,010 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 151 flow [2023-08-03 18:46:26,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:26,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:26,010 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:46:26,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 18:46:26,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:26,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:26,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:26,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1031301502, now seen corresponding path program 1 times [2023-08-03 18:46:26,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:26,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82728731] [2023-08-03 18:46:26,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:26,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:46:26,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82728731] [2023-08-03 18:46:26,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82728731] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:46:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964740616] [2023-08-03 18:46:26,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:26,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:26,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:46:26,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:46:26,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 18:46:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:26,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:46:26,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:46:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:46:26,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:46:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:46:26,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964740616] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:46:26,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:46:26,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:46:26,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645775380] [2023-08-03 18:46:26,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:46:26,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:46:26,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:26,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:46:26,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:46:26,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 205 [2023-08-03 18:46:26,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:26,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:26,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 205 [2023-08-03 18:46:26,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:28,336 INFO L124 PetriNetUnfolderBase]: 24220/34031 cut-off events. [2023-08-03 18:46:28,336 INFO L125 PetriNetUnfolderBase]: For 3738/3738 co-relation queries the response was YES. [2023-08-03 18:46:28,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70276 conditions, 34031 events. 24220/34031 cut-off events. For 3738/3738 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 214424 event pairs, 14814 based on Foata normal form. 3/34006 useless extension candidates. Maximal degree in co-relation 24970. Up to 31258 conditions per place. [2023-08-03 18:46:28,560 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 36 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-03 18:46:28,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 48 transitions, 237 flow [2023-08-03 18:46:28,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:46:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:46:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2023-08-03 18:46:28,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5682926829268292 [2023-08-03 18:46:28,562 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 466 transitions. [2023-08-03 18:46:28,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 466 transitions. [2023-08-03 18:46:28,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:28,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 466 transitions. [2023-08-03 18:46:28,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:28,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:28,565 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:28,565 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 151 flow. Second operand 4 states and 466 transitions. [2023-08-03 18:46:28,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 48 transitions, 237 flow [2023-08-03 18:46:28,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 48 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:46:28,570 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 147 flow [2023-08-03 18:46:28,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2023-08-03 18:46:28,571 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2023-08-03 18:46:28,571 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 147 flow [2023-08-03 18:46:28,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:28,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:28,571 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:46:28,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 18:46:28,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:28,776 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:28,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:28,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1871522258, now seen corresponding path program 1 times [2023-08-03 18:46:28,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:28,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28964129] [2023-08-03 18:46:28,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:28,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:46:28,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28964129] [2023-08-03 18:46:28,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28964129] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:46:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023774776] [2023-08-03 18:46:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:28,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:28,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:46:28,821 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:46:28,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 18:46:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:28,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:46:28,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:46:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:46:28,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:46:28,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023774776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:46:28,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:46:28,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:46:28,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455322870] [2023-08-03 18:46:28,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:46:28,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:46:28,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:28,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:46:28,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:46:28,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 205 [2023-08-03 18:46:28,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:28,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:28,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 205 [2023-08-03 18:46:28,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:30,788 INFO L124 PetriNetUnfolderBase]: 24004/33739 cut-off events. [2023-08-03 18:46:30,788 INFO L125 PetriNetUnfolderBase]: For 3166/3166 co-relation queries the response was YES. [2023-08-03 18:46:30,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69349 conditions, 33739 events. 24004/33739 cut-off events. For 3166/3166 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 212592 event pairs, 6718 based on Foata normal form. 81/33819 useless extension candidates. Maximal degree in co-relation 24641. Up to 30429 conditions per place. [2023-08-03 18:46:30,934 INFO L140 encePairwiseOnDemand]: 201/205 looper letters, 48 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2023-08-03 18:46:30,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 291 flow [2023-08-03 18:46:30,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:46:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:46:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 586 transitions. [2023-08-03 18:46:30,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5717073170731707 [2023-08-03 18:46:30,936 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 586 transitions. [2023-08-03 18:46:30,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 586 transitions. [2023-08-03 18:46:30,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:30,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 586 transitions. [2023-08-03 18:46:30,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:30,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:30,939 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:30,939 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 147 flow. Second operand 5 states and 586 transitions. [2023-08-03 18:46:30,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 291 flow [2023-08-03 18:46:30,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 18:46:30,942 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 159 flow [2023-08-03 18:46:30,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2023-08-03 18:46:30,942 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2023-08-03 18:46:30,942 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 159 flow [2023-08-03 18:46:30,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:30,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:30,943 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:46:30,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 18:46:31,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:31,147 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:31,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:31,148 INFO L85 PathProgramCache]: Analyzing trace with hash -745191460, now seen corresponding path program 1 times [2023-08-03 18:46:31,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:31,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130581757] [2023-08-03 18:46:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:31,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:46:31,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:31,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130581757] [2023-08-03 18:46:31,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130581757] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:46:31,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670747918] [2023-08-03 18:46:31,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:31,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:31,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:46:31,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:46:31,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 18:46:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:31,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:46:31,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:46:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:46:31,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:46:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:46:31,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670747918] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:46:31,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:46:31,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:46:31,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839783367] [2023-08-03 18:46:31,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:46:31,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:46:31,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:31,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:46:31,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:46:31,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 205 [2023-08-03 18:46:31,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:31,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:31,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 205 [2023-08-03 18:46:31,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:32,658 INFO L124 PetriNetUnfolderBase]: 18982/26368 cut-off events. [2023-08-03 18:46:32,658 INFO L125 PetriNetUnfolderBase]: For 2971/2971 co-relation queries the response was YES. [2023-08-03 18:46:32,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54505 conditions, 26368 events. 18982/26368 cut-off events. For 2971/2971 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 157319 event pairs, 11848 based on Foata normal form. 27/26394 useless extension candidates. Maximal degree in co-relation 19322. Up to 23785 conditions per place. [2023-08-03 18:46:32,773 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 44 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-08-03 18:46:32,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 55 transitions, 275 flow [2023-08-03 18:46:32,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:46:32,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:46:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 474 transitions. [2023-08-03 18:46:32,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780487804878048 [2023-08-03 18:46:32,774 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 474 transitions. [2023-08-03 18:46:32,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 474 transitions. [2023-08-03 18:46:32,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:32,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 474 transitions. [2023-08-03 18:46:32,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:32,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:32,776 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:32,776 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 159 flow. Second operand 4 states and 474 transitions. [2023-08-03 18:46:32,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 55 transitions, 275 flow [2023-08-03 18:46:32,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 55 transitions, 270 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:46:32,779 INFO L231 Difference]: Finished difference. Result has 65 places, 40 transitions, 150 flow [2023-08-03 18:46:32,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=65, PETRI_TRANSITIONS=40} [2023-08-03 18:46:32,780 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2023-08-03 18:46:32,780 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 40 transitions, 150 flow [2023-08-03 18:46:32,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:32,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:32,780 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:46:32,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 18:46:32,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:32,985 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:32,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:32,985 INFO L85 PathProgramCache]: Analyzing trace with hash 114675071, now seen corresponding path program 1 times [2023-08-03 18:46:32,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:32,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246878944] [2023-08-03 18:46:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:32,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:46:33,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:33,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246878944] [2023-08-03 18:46:33,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246878944] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:46:33,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882682331] [2023-08-03 18:46:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:33,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:33,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:46:33,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:46:33,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 18:46:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:33,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:46:33,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:46:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:46:33,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:46:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:46:33,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882682331] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:46:33,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:46:33,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:46:33,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121489292] [2023-08-03 18:46:33,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:46:33,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:46:33,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:33,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:46:33,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:46:33,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 205 [2023-08-03 18:46:33,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 40 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:33,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:33,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 205 [2023-08-03 18:46:33,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:34,551 INFO L124 PetriNetUnfolderBase]: 17362/23371 cut-off events. [2023-08-03 18:46:34,551 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2023-08-03 18:46:34,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49186 conditions, 23371 events. 17362/23371 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 1060. Compared 129107 event pairs, 6886 based on Foata normal form. 243/23613 useless extension candidates. Maximal degree in co-relation 17441. Up to 11794 conditions per place. [2023-08-03 18:46:34,661 INFO L140 encePairwiseOnDemand]: 201/205 looper letters, 52 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-03 18:46:34,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 310 flow [2023-08-03 18:46:34,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:46:34,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:46:34,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 483 transitions. [2023-08-03 18:46:34,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5890243902439024 [2023-08-03 18:46:34,663 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 483 transitions. [2023-08-03 18:46:34,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 483 transitions. [2023-08-03 18:46:34,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:34,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 483 transitions. [2023-08-03 18:46:34,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:34,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:34,665 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:34,665 INFO L175 Difference]: Start difference. First operand has 65 places, 40 transitions, 150 flow. Second operand 4 states and 483 transitions. [2023-08-03 18:46:34,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 310 flow [2023-08-03 18:46:34,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 304 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:46:34,667 INFO L231 Difference]: Finished difference. Result has 67 places, 41 transitions, 164 flow [2023-08-03 18:46:34,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=67, PETRI_TRANSITIONS=41} [2023-08-03 18:46:34,667 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2023-08-03 18:46:34,667 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 41 transitions, 164 flow [2023-08-03 18:46:34,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:34,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:34,668 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:46:34,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 18:46:34,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:34,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:34,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:34,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1072498921, now seen corresponding path program 1 times [2023-08-03 18:46:34,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:34,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696181082] [2023-08-03 18:46:34,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:34,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:46:34,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:34,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696181082] [2023-08-03 18:46:34,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696181082] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:46:34,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400569179] [2023-08-03 18:46:34,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:34,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:34,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:46:34,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:46:34,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 18:46:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:35,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:46:35,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:46:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:46:35,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:46:35,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400569179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:46:35,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:46:35,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:46:35,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326581834] [2023-08-03 18:46:35,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:46:35,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:46:35,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:35,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:46:35,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:46:35,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 205 [2023-08-03 18:46:35,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 41 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:35,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:35,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 205 [2023-08-03 18:46:35,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:36,184 INFO L124 PetriNetUnfolderBase]: 14446/19240 cut-off events. [2023-08-03 18:46:36,184 INFO L125 PetriNetUnfolderBase]: For 7135/7135 co-relation queries the response was YES. [2023-08-03 18:46:36,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43967 conditions, 19240 events. 14446/19240 cut-off events. For 7135/7135 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 99317 event pairs, 568 based on Foata normal form. 729/19968 useless extension candidates. Maximal degree in co-relation 15539. Up to 10935 conditions per place. [2023-08-03 18:46:36,275 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 60 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-03 18:46:36,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 344 flow [2023-08-03 18:46:36,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:46:36,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:46:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 597 transitions. [2023-08-03 18:46:36,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5824390243902439 [2023-08-03 18:46:36,278 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 597 transitions. [2023-08-03 18:46:36,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 597 transitions. [2023-08-03 18:46:36,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:36,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 597 transitions. [2023-08-03 18:46:36,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.4) internal successors, (597), 5 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:36,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:36,280 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:36,280 INFO L175 Difference]: Start difference. First operand has 67 places, 41 transitions, 164 flow. Second operand 5 states and 597 transitions. [2023-08-03 18:46:36,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 344 flow [2023-08-03 18:46:36,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 337 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 18:46:36,296 INFO L231 Difference]: Finished difference. Result has 67 places, 39 transitions, 153 flow [2023-08-03 18:46:36,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=67, PETRI_TRANSITIONS=39} [2023-08-03 18:46:36,296 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2023-08-03 18:46:36,296 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 39 transitions, 153 flow [2023-08-03 18:46:36,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:36,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:36,297 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:46:36,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 18:46:36,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-03 18:46:36,502 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:36,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:36,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1072498252, now seen corresponding path program 1 times [2023-08-03 18:46:36,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:36,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039872152] [2023-08-03 18:46:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:36,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:46:36,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:36,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039872152] [2023-08-03 18:46:36,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039872152] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:46:36,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:46:36,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:46:36,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779036968] [2023-08-03 18:46:36,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:46:36,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:46:36,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:36,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:46:36,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:46:36,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 205 [2023-08-03 18:46:36,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 39 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:36,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:36,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 205 [2023-08-03 18:46:36,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:41,840 INFO L124 PetriNetUnfolderBase]: 76294/97209 cut-off events. [2023-08-03 18:46:41,840 INFO L125 PetriNetUnfolderBase]: For 45898/45898 co-relation queries the response was YES. [2023-08-03 18:46:42,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219863 conditions, 97209 events. 76294/97209 cut-off events. For 45898/45898 co-relation queries the response was YES. Maximal size of possible extension queue 2930. Compared 522717 event pairs, 27670 based on Foata normal form. 1732/98908 useless extension candidates. Maximal degree in co-relation 80243. Up to 64029 conditions per place. [2023-08-03 18:46:42,442 INFO L140 encePairwiseOnDemand]: 195/205 looper letters, 54 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2023-08-03 18:46:42,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 380 flow [2023-08-03 18:46:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:46:42,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:46:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-03 18:46:42,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886178861788618 [2023-08-03 18:46:42,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-03 18:46:42,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-03 18:46:42,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:42,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-03 18:46:42,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:42,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:42,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:42,445 INFO L175 Difference]: Start difference. First operand has 67 places, 39 transitions, 153 flow. Second operand 3 states and 362 transitions. [2023-08-03 18:46:42,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 380 flow [2023-08-03 18:46:42,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 370 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:46:42,470 INFO L231 Difference]: Finished difference. Result has 68 places, 47 transitions, 218 flow [2023-08-03 18:46:42,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2023-08-03 18:46:42,471 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2023-08-03 18:46:42,471 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 218 flow [2023-08-03 18:46:42,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:42,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:42,471 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:46:42,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 18:46:42,471 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:42,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1112291963, now seen corresponding path program 1 times [2023-08-03 18:46:42,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:42,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8819986] [2023-08-03 18:46:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:42,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:42,556 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:46:42,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:42,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8819986] [2023-08-03 18:46:42,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8819986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:46:42,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:46:42,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:46:42,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135652136] [2023-08-03 18:46:42,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:46:42,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 18:46:42,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:42,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 18:46:42,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 18:46:42,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 205 [2023-08-03 18:46:42,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:42,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:42,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 205 [2023-08-03 18:46:42,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:47,763 INFO L124 PetriNetUnfolderBase]: 75342/95997 cut-off events. [2023-08-03 18:46:47,764 INFO L125 PetriNetUnfolderBase]: For 68428/68428 co-relation queries the response was YES. [2023-08-03 18:46:48,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275985 conditions, 95997 events. 75342/95997 cut-off events. For 68428/68428 co-relation queries the response was YES. Maximal size of possible extension queue 2883. Compared 511812 event pairs, 11054 based on Foata normal form. 128/96124 useless extension candidates. Maximal degree in co-relation 106566. Up to 57997 conditions per place. [2023-08-03 18:46:48,565 INFO L140 encePairwiseOnDemand]: 195/205 looper letters, 67 selfloop transitions, 13 changer transitions 0/83 dead transitions. [2023-08-03 18:46:48,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 522 flow [2023-08-03 18:46:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:46:48,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:46:48,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 474 transitions. [2023-08-03 18:46:48,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780487804878048 [2023-08-03 18:46:48,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 474 transitions. [2023-08-03 18:46:48,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 474 transitions. [2023-08-03 18:46:48,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:48,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 474 transitions. [2023-08-03 18:46:48,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:48,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:48,574 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:48,574 INFO L175 Difference]: Start difference. First operand has 68 places, 47 transitions, 218 flow. Second operand 4 states and 474 transitions. [2023-08-03 18:46:48,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 522 flow [2023-08-03 18:46:48,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 492 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:46:48,866 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 298 flow [2023-08-03 18:46:48,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2023-08-03 18:46:48,866 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2023-08-03 18:46:48,866 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 298 flow [2023-08-03 18:46:48,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:48,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:48,867 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:46:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 18:46:48,867 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:48,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1112291808, now seen corresponding path program 1 times [2023-08-03 18:46:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:48,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607626628] [2023-08-03 18:46:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:48,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:48,962 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:46:48,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:48,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607626628] [2023-08-03 18:46:48,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607626628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:46:48,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:46:48,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:46:48,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295771320] [2023-08-03 18:46:48,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:46:48,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 18:46:48,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:48,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 18:46:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 18:46:48,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 205 [2023-08-03 18:46:48,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:48,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:48,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 205 [2023-08-03 18:46:48,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:54,474 INFO L124 PetriNetUnfolderBase]: 74538/94471 cut-off events. [2023-08-03 18:46:54,474 INFO L125 PetriNetUnfolderBase]: For 106064/106064 co-relation queries the response was YES. [2023-08-03 18:46:54,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297098 conditions, 94471 events. 74538/94471 cut-off events. For 106064/106064 co-relation queries the response was YES. Maximal size of possible extension queue 2844. Compared 507575 event pairs, 16904 based on Foata normal form. 60/94514 useless extension candidates. Maximal degree in co-relation 234278. Up to 61741 conditions per place. [2023-08-03 18:46:55,102 INFO L140 encePairwiseOnDemand]: 195/205 looper letters, 83 selfloop transitions, 23 changer transitions 0/109 dead transitions. [2023-08-03 18:46:55,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 109 transitions, 777 flow [2023-08-03 18:46:55,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:46:55,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:46:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 489 transitions. [2023-08-03 18:46:55,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5963414634146341 [2023-08-03 18:46:55,103 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 489 transitions. [2023-08-03 18:46:55,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 489 transitions. [2023-08-03 18:46:55,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:55,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 489 transitions. [2023-08-03 18:46:55,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:55,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:55,105 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:55,105 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 298 flow. Second operand 4 states and 489 transitions. [2023-08-03 18:46:55,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 109 transitions, 777 flow [2023-08-03 18:46:55,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 109 transitions, 777 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:46:55,199 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 445 flow [2023-08-03 18:46:55,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=445, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2023-08-03 18:46:55,199 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2023-08-03 18:46:55,199 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 445 flow [2023-08-03 18:46:55,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:55,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:55,199 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:46:55,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 18:46:55,200 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:46:55,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:55,200 INFO L85 PathProgramCache]: Analyzing trace with hash 121311737, now seen corresponding path program 1 times [2023-08-03 18:46:55,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:55,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462002292] [2023-08-03 18:46:55,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:55,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:46:55,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:55,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462002292] [2023-08-03 18:46:55,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462002292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:46:55,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:46:55,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:46:55,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883465236] [2023-08-03 18:46:55,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:46:55,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:46:55,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:55,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:46:55,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:46:55,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 205 [2023-08-03 18:46:55,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 445 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:55,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:55,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 205 [2023-08-03 18:46:55,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:47:00,016 INFO L124 PetriNetUnfolderBase]: 54408/70380 cut-off events. [2023-08-03 18:47:00,016 INFO L125 PetriNetUnfolderBase]: For 157114/164911 co-relation queries the response was YES. [2023-08-03 18:47:00,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244873 conditions, 70380 events. 54408/70380 cut-off events. For 157114/164911 co-relation queries the response was YES. Maximal size of possible extension queue 3144. Compared 405849 event pairs, 10740 based on Foata normal form. 1710/66583 useless extension candidates. Maximal degree in co-relation 191813. Up to 62382 conditions per place. [2023-08-03 18:47:00,543 INFO L140 encePairwiseOnDemand]: 197/205 looper letters, 81 selfloop transitions, 7 changer transitions 0/105 dead transitions. [2023-08-03 18:47:00,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 105 transitions, 868 flow [2023-08-03 18:47:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:47:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:47:00,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2023-08-03 18:47:00,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6016260162601627 [2023-08-03 18:47:00,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2023-08-03 18:47:00,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2023-08-03 18:47:00,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:47:00,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2023-08-03 18:47:00,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:00,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:00,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:00,547 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 445 flow. Second operand 3 states and 370 transitions. [2023-08-03 18:47:00,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 105 transitions, 868 flow [2023-08-03 18:47:00,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 864 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 18:47:00,687 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 488 flow [2023-08-03 18:47:00,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2023-08-03 18:47:00,695 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2023-08-03 18:47:00,695 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 488 flow [2023-08-03 18:47:00,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:00,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:47:00,695 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:47:00,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-03 18:47:00,696 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:47:00,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:47:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash -472725299, now seen corresponding path program 1 times [2023-08-03 18:47:00,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:47:00,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940091626] [2023-08-03 18:47:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:47:00,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:47:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:47:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 18:47:00,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:47:00,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940091626] [2023-08-03 18:47:00,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940091626] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:47:00,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183275281] [2023-08-03 18:47:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:47:00,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:47:00,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:47:00,893 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:47:00,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 18:47:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:47:00,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-03 18:47:00,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:47:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:47:01,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:47:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:47:01,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183275281] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:47:01,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:47:01,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-03 18:47:01,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301105871] [2023-08-03 18:47:01,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:47:01,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 18:47:01,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:47:01,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 18:47:01,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2023-08-03 18:47:01,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 205 [2023-08-03 18:47:01,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 488 flow. Second operand has 13 states, 13 states have (on average 98.84615384615384) internal successors, (1285), 13 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:01,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:47:01,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 205 [2023-08-03 18:47:01,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:47:09,171 INFO L124 PetriNetUnfolderBase]: 90348/116700 cut-off events. [2023-08-03 18:47:09,171 INFO L125 PetriNetUnfolderBase]: For 285803/285803 co-relation queries the response was YES. [2023-08-03 18:47:09,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457708 conditions, 116700 events. 90348/116700 cut-off events. For 285803/285803 co-relation queries the response was YES. Maximal size of possible extension queue 3774. Compared 671062 event pairs, 3110 based on Foata normal form. 3017/119663 useless extension candidates. Maximal degree in co-relation 189177. Up to 46384 conditions per place. [2023-08-03 18:47:10,297 INFO L140 encePairwiseOnDemand]: 188/205 looper letters, 221 selfloop transitions, 218 changer transitions 0/442 dead transitions. [2023-08-03 18:47:10,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 442 transitions, 3704 flow [2023-08-03 18:47:10,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-03 18:47:10,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-03 18:47:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1736 transitions. [2023-08-03 18:47:10,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645528455284553 [2023-08-03 18:47:10,300 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1736 transitions. [2023-08-03 18:47:10,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1736 transitions. [2023-08-03 18:47:10,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:47:10,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1736 transitions. [2023-08-03 18:47:10,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 115.73333333333333) internal successors, (1736), 15 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:10,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 205.0) internal successors, (3280), 16 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:10,306 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 205.0) internal successors, (3280), 16 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:10,306 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 488 flow. Second operand 15 states and 1736 transitions. [2023-08-03 18:47:10,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 442 transitions, 3704 flow [2023-08-03 18:47:11,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 442 transitions, 3675 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:47:11,183 INFO L231 Difference]: Finished difference. Result has 102 places, 292 transitions, 2881 flow [2023-08-03 18:47:11,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2881, PETRI_PLACES=102, PETRI_TRANSITIONS=292} [2023-08-03 18:47:11,184 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 50 predicate places. [2023-08-03 18:47:11,184 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 292 transitions, 2881 flow [2023-08-03 18:47:11,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 98.84615384615384) internal successors, (1285), 13 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:11,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:47:11,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:47:11,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-03 18:47:11,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 18:47:11,392 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:47:11,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:47:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash 616614425, now seen corresponding path program 1 times [2023-08-03 18:47:11,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:47:11,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502904905] [2023-08-03 18:47:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:47:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:47:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:47:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 18:47:11,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:47:11,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502904905] [2023-08-03 18:47:11,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502904905] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:47:11,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407448726] [2023-08-03 18:47:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:47:11,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:47:11,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:47:11,489 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:47:11,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 18:47:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:47:11,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-03 18:47:11,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:47:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 18:47:11,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:47:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 18:47:11,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407448726] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:47:11,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:47:11,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 15 [2023-08-03 18:47:11,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45779451] [2023-08-03 18:47:11,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:47:11,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-03 18:47:11,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:47:11,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-03 18:47:11,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-08-03 18:47:11,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 205 [2023-08-03 18:47:11,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 292 transitions, 2881 flow. Second operand has 16 states, 16 states have (on average 98.1875) internal successors, (1571), 16 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:11,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:47:11,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 205 [2023-08-03 18:47:11,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:47:25,470 INFO L124 PetriNetUnfolderBase]: 110007/143815 cut-off events. [2023-08-03 18:47:25,471 INFO L125 PetriNetUnfolderBase]: For 686554/686554 co-relation queries the response was YES. [2023-08-03 18:47:26,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761948 conditions, 143815 events. 110007/143815 cut-off events. For 686554/686554 co-relation queries the response was YES. Maximal size of possible extension queue 5428. Compared 888507 event pairs, 1203 based on Foata normal form. 4336/148057 useless extension candidates. Maximal degree in co-relation 659579. Up to 52918 conditions per place. [2023-08-03 18:47:27,318 INFO L140 encePairwiseOnDemand]: 188/205 looper letters, 436 selfloop transitions, 732 changer transitions 0/1171 dead transitions. [2023-08-03 18:47:27,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 1171 transitions, 12493 flow [2023-08-03 18:47:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-03 18:47:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-03 18:47:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3996 transitions. [2023-08-03 18:47:27,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5569337979094077 [2023-08-03 18:47:27,335 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3996 transitions. [2023-08-03 18:47:27,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3996 transitions. [2023-08-03 18:47:27,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:47:27,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3996 transitions. [2023-08-03 18:47:27,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 114.17142857142858) internal successors, (3996), 35 states have internal predecessors, (3996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:27,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 205.0) internal successors, (7380), 36 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:27,380 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 205.0) internal successors, (7380), 36 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:27,380 INFO L175 Difference]: Start difference. First operand has 102 places, 292 transitions, 2881 flow. Second operand 35 states and 3996 transitions. [2023-08-03 18:47:27,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 1171 transitions, 12493 flow [2023-08-03 18:47:44,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 1171 transitions, 12150 flow, removed 157 selfloop flow, removed 1 redundant places. [2023-08-03 18:47:44,420 INFO L231 Difference]: Finished difference. Result has 147 places, 840 transitions, 9890 flow [2023-08-03 18:47:44,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=2642, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=9890, PETRI_PLACES=147, PETRI_TRANSITIONS=840} [2023-08-03 18:47:44,420 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 95 predicate places. [2023-08-03 18:47:44,421 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 840 transitions, 9890 flow [2023-08-03 18:47:44,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 98.1875) internal successors, (1571), 16 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:47:44,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:47:44,421 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:47:44,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 18:47:44,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 18:47:44,626 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:47:44,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:47:44,626 INFO L85 PathProgramCache]: Analyzing trace with hash -486597358, now seen corresponding path program 1 times [2023-08-03 18:47:44,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:47:44,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169207388] [2023-08-03 18:47:44,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:47:44,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:47:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:47:44,644 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:47:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:47:44,665 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:47:44,665 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:47:44,665 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 18:47:44,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 18:47:44,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 18:47:44,665 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 18:47:44,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 18:47:44,665 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:47:44,669 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 18:47:44,669 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 18:47:44,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 06:47:44 BasicIcfg [2023-08-03 18:47:44,736 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 18:47:44,736 INFO L158 Benchmark]: Toolchain (without parser) took 96131.28ms. Allocated memory was 417.3MB in the beginning and 15.7GB in the end (delta: 15.3GB). Free memory was 382.4MB in the beginning and 9.0GB in the end (delta: -8.7GB). Peak memory consumption was 6.7GB. Max. memory is 16.0GB. [2023-08-03 18:47:44,736 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 327.2MB. Free memory was 283.8MB in the beginning and 283.7MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:47:44,736 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.36ms. Allocated memory is still 417.3MB. Free memory was 382.2MB in the beginning and 361.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 18:47:44,736 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.05ms. Allocated memory is still 417.3MB. Free memory was 361.7MB in the beginning and 359.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:47:44,737 INFO L158 Benchmark]: Boogie Preprocessor took 16.16ms. Allocated memory is still 417.3MB. Free memory was 359.6MB in the beginning and 358.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:47:44,737 INFO L158 Benchmark]: RCFGBuilder took 349.86ms. Allocated memory is still 417.3MB. Free memory was 357.5MB in the beginning and 343.2MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 18:47:44,737 INFO L158 Benchmark]: TraceAbstraction took 95360.25ms. Allocated memory was 417.3MB in the beginning and 15.7GB in the end (delta: 15.3GB). Free memory was 342.4MB in the beginning and 9.0GB in the end (delta: -8.7GB). Peak memory consumption was 6.6GB. Max. memory is 16.0GB. [2023-08-03 18:47:44,738 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 327.2MB. Free memory was 283.8MB in the beginning and 283.7MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 375.36ms. Allocated memory is still 417.3MB. Free memory was 382.2MB in the beginning and 361.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.05ms. Allocated memory is still 417.3MB. Free memory was 361.7MB in the beginning and 359.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.16ms. Allocated memory is still 417.3MB. Free memory was 359.6MB in the beginning and 358.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 349.86ms. Allocated memory is still 417.3MB. Free memory was 357.5MB in the beginning and 343.2MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 95360.25ms. Allocated memory was 417.3MB in the beginning and 15.7GB in the end (delta: 15.3GB). Free memory was 342.4MB in the beginning and 9.0GB in the end (delta: -8.7GB). Peak memory consumption was 6.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 95 PlacesBefore, 32 PlacesAfterwards, 92 TransitionsBefore, 25 TransitionsAfterwards, 1586 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 72 TotalNumberOfCompositions, 2531 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1784, independent: 1716, independent conditional: 0, independent unconditional: 1716, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 858, independent: 839, independent conditional: 0, independent unconditional: 839, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1784, independent: 877, independent conditional: 0, independent unconditional: 877, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 858, unknown conditional: 0, unknown unconditional: 858] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 67, Positive conditional cache size: 0, Positive unconditional cache size: 67, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 121 PlacesBefore, 52 PlacesAfterwards, 112 TransitionsBefore, 40 TransitionsAfterwards, 3852 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 81 TotalNumberOfCompositions, 7235 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3575, independent: 3452, independent conditional: 0, independent unconditional: 3452, dependent: 123, dependent conditional: 0, dependent unconditional: 123, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1903, independent: 1862, independent conditional: 0, independent unconditional: 1862, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3575, independent: 1590, independent conditional: 0, independent unconditional: 1590, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 1903, unknown conditional: 0, unknown unconditional: 1903] , Statistics on independence cache: Total cache size (in pairs): 144, Positive cache size: 129, Positive conditional cache size: 0, Positive unconditional cache size: 129, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L713] 0 int __unbuffered_p2_EBX = 0; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L719] 0 int y = 0; [L773] 0 pthread_t t2411[2]; [L774] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t2411={5:0}, x=0, y=0] [L774] COND TRUE 0 asdf<2 [L774] FCALL, FORK 0 pthread_create(&t2411[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2411[asdf], ((void *)0), P0, ((void *)0))=-6, t2411={5:0}, x=0, y=0] [L774] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t2411={5:0}, x=0, y=0] [L774] COND TRUE 0 asdf<2 [L774] FCALL, FORK 0 pthread_create(&t2411[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2411[asdf], ((void *)0), P0, ((void *)0))=-5, t2411={5:0}, x=0, y=0] [L774] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2411={5:0}, x=0, y=0] [L774] COND FALSE 0 !(asdf<2) [L775] 0 pthread_t t2412[2]; [L776] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2411={5:0}, t2412={6:0}, x=0, y=0] [L776] COND TRUE 0 asdf<2 [L776] FCALL, FORK 0 pthread_create(&t2412[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2412[asdf], ((void *)0), P1, ((void *)0))=-4, t2411={5:0}, t2412={6:0}, x=0, y=0] [L776] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2411={5:0}, t2412={6:0}, x=0, y=0] [L776] COND TRUE 0 asdf<2 [L776] FCALL, FORK 0 pthread_create(&t2412[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2412[asdf], ((void *)0), P1, ((void *)0))=-3, t2411={5:0}, t2412={6:0}, x=0, y=0] [L776] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2411={5:0}, t2412={6:0}, x=0, y=0] [L776] COND FALSE 0 !(asdf<2) [L777] 0 pthread_t t2413[2]; [L778] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2411={5:0}, t2412={6:0}, t2413={3:0}, x=0, y=0] [L778] COND TRUE 0 asdf<2 [L778] FCALL, FORK 0 pthread_create(&t2413[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2413[asdf], ((void *)0), P2, ((void *)0))=-2, t2411={5:0}, t2412={6:0}, t2413={3:0}, x=0, y=0] [L778] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2411={5:0}, t2412={6:0}, t2413={3:0}, x=0, y=0] [L778] COND TRUE 0 asdf<2 [L778] FCALL, FORK 0 pthread_create(&t2413[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2413[asdf], ((void *)0), P2, ((void *)0))=-1, t2411={5:0}, t2412={6:0}, t2413={3:0}, x=0, y=0] [L738] 3 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=2, y=0] [L738] 4 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=2, y=0] [L778] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=2, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2411={5:0}, t2412={6:0}, t2413={3:0}, x=2, y=0] [L743] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L745] 3 return 0; [L743] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L745] 4 return 0; [L750] 5 __unbuffered_p2_EAX = x VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=2, y=0] [L753] 5 __unbuffered_p2_EBX = y VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=2, y=0] [L758] 5 __unbuffered_cnt = __unbuffered_cnt + 1 [L760] 5 return 0; [L778] COND FALSE 0 !(asdf<2) [L780] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L782] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L782] RET 0 assume_abort_if_not(main$tmp_guard0) [L786] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p2_EAX == 2 && __unbuffered_p2_EBX == 0) [L788] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, x=2, y=0] - UnprovableResult [Line: 774]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 776]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 120 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 46 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=73occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 140 locations, 4 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: 93.3s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 86.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1298 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1153 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 142 mSDsCounter, 398 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2842 IncrementalHoareTripleChecker+Invalid, 3240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 398 mSolverCounterUnsat, 62 mSDtfsCounter, 2842 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 398 GetRequests, 305 SyntacticMatches, 6 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9890occurred in iteration=15, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 580 NumberOfCodeBlocks, 580 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 2531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1606 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 30 InterpolantComputations, 10 PerfectInterpolantSequences, 313/360 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-03 18:47:44,780 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...