/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/weaver_popl20-threaded-sum-3.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:59:22,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:59:22,977 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:59:22,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:59:22,983 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:59:22,983 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:59:22,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:59:23,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:59:23,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:59:23,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:59:23,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:59:23,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:59:23,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:59:23,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:59:23,019 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:59:23,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:59:23,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:59:23,019 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:59:23,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:59:23,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:59:23,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:59:23,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:59:23,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:59:23,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:59:23,022 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:59:23,022 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:59:23,022 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:59:23,023 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:59:23,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:59:23,023 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:59:23,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:59:23,025 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:59:23,025 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:59:23,025 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:59:23,025 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:59:23,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:59:23,025 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:59:23,026 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:59:23,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:59:23,026 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:59:23,026 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:59:23,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:59:23,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:59:23,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:59:23,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:59:23,242 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:59:23,242 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:59:23,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-threaded-sum-3.wvr_bound2.c [2023-08-03 20:59:24,455 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:59:24,619 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:59:24,620 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-threaded-sum-3.wvr_bound2.c [2023-08-03 20:59:24,625 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/883077d1b/c6600cc12b994f469d26eab9a99ca178/FLAG64de78230 [2023-08-03 20:59:25,030 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/883077d1b/c6600cc12b994f469d26eab9a99ca178 [2023-08-03 20:59:25,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:59:25,033 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:59:25,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:59:25,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:59:25,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:59:25,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:59:25" (1/1) ... [2023-08-03 20:59:25,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e7bc37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25, skipping insertion in model container [2023-08-03 20:59:25,041 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:59:25" (1/1) ... [2023-08-03 20:59:25,063 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:59:25,210 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-threaded-sum-3.wvr_bound2.c[3200,3213] [2023-08-03 20:59:25,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:59:25,220 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:59:25,246 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-threaded-sum-3.wvr_bound2.c[3200,3213] [2023-08-03 20:59:25,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:59:25,254 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:59:25,254 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:59:25,259 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:59:25,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25 WrapperNode [2023-08-03 20:59:25,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:59:25,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:59:25,261 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:59:25,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:59:25,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25" (1/1) ... [2023-08-03 20:59:25,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25" (1/1) ... [2023-08-03 20:59:25,299 INFO L138 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 130 [2023-08-03 20:59:25,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:59:25,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:59:25,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:59:25,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:59:25,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25" (1/1) ... [2023-08-03 20:59:25,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25" (1/1) ... [2023-08-03 20:59:25,310 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25" (1/1) ... [2023-08-03 20:59:25,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25" (1/1) ... [2023-08-03 20:59:25,317 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25" (1/1) ... [2023-08-03 20:59:25,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25" (1/1) ... [2023-08-03 20:59:25,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25" (1/1) ... [2023-08-03 20:59:25,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25" (1/1) ... [2023-08-03 20:59:25,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:59:25,327 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:59:25,327 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:59:25,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:59:25,328 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25" (1/1) ... [2023-08-03 20:59:25,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:59:25,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:59:25,366 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 20:59:25,375 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 20:59:25,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:59:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:59:25,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:59:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:59:25,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:59:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 20:59:25,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 20:59:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:59:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:59:25,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:59:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:59:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:59:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:59:25,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:59:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:59:25,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:59:25,404 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 20:59:25,485 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:59:25,487 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:59:25,705 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:59:25,760 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:59:25,761 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-03 20:59:25,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:59:25 BoogieIcfgContainer [2023-08-03 20:59:25,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:59:25,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:59:25,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:59:25,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:59:25,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:59:25" (1/3) ... [2023-08-03 20:59:25,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8a5daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:59:25, skipping insertion in model container [2023-08-03 20:59:25,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:59:25" (2/3) ... [2023-08-03 20:59:25,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8a5daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:59:25, skipping insertion in model container [2023-08-03 20:59:25,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:59:25" (3/3) ... [2023-08-03 20:59:25,770 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-threaded-sum-3.wvr_bound2.c [2023-08-03 20:59:25,783 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:59:25,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:59:25,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:59:25,790 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:59:25,865 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 20:59:25,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 159 transitions, 360 flow [2023-08-03 20:59:26,152 INFO L124 PetriNetUnfolderBase]: 97/622 cut-off events. [2023-08-03 20:59:26,153 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:59:26,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 622 events. 97/622 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3127 event pairs, 0 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 339. Up to 16 conditions per place. [2023-08-03 20:59:26,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 159 transitions, 360 flow [2023-08-03 20:59:26,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 159 transitions, 360 flow [2023-08-03 20:59:26,176 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:59:26,184 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 159 transitions, 360 flow [2023-08-03 20:59:26,187 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 159 transitions, 360 flow [2023-08-03 20:59:26,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 159 transitions, 360 flow [2023-08-03 20:59:26,260 INFO L124 PetriNetUnfolderBase]: 97/622 cut-off events. [2023-08-03 20:59:26,261 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:59:26,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 622 events. 97/622 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3127 event pairs, 0 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 339. Up to 16 conditions per place. [2023-08-03 20:59:26,274 INFO L119 LiptonReduction]: Number of co-enabled transitions 4238 [2023-08-03 20:59:29,641 INFO L134 LiptonReduction]: Checked pairs total: 9874 [2023-08-03 20:59:29,642 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-03 20:59:29,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:59:29,661 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;@4c747dec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:59:29,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:59:29,666 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:59:29,666 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2023-08-03 20:59:29,666 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:59:29,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:59:29,667 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 20:59:29,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === 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 20:59:29,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:59:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1410198506, now seen corresponding path program 1 times [2023-08-03 20:59:29,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:59:29,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60085352] [2023-08-03 20:59:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:59:29,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:59:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:59:29,787 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:59:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:59:29,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:59:29,833 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:59:29,834 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 20:59:29,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 20:59:29,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:59:29,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:59:29,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:59:29,837 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 20:59:29,839 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:59:29,839 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:59:29,877 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 20:59:29,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 196 transitions, 482 flow [2023-08-03 20:59:30,377 INFO L124 PetriNetUnfolderBase]: 887/4087 cut-off events. [2023-08-03 20:59:30,377 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:59:30,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4761 conditions, 4087 events. 887/4087 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 32776 event pairs, 22 based on Foata normal form. 0/3444 useless extension candidates. Maximal degree in co-relation 2413. Up to 192 conditions per place. [2023-08-03 20:59:30,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 196 transitions, 482 flow [2023-08-03 20:59:30,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 196 transitions, 482 flow [2023-08-03 20:59:30,421 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:59:30,421 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 196 transitions, 482 flow [2023-08-03 20:59:30,421 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 196 transitions, 482 flow [2023-08-03 20:59:30,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 196 transitions, 482 flow [2023-08-03 20:59:30,859 INFO L124 PetriNetUnfolderBase]: 887/4087 cut-off events. [2023-08-03 20:59:30,859 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:59:30,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4761 conditions, 4087 events. 887/4087 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 32776 event pairs, 22 based on Foata normal form. 0/3444 useless extension candidates. Maximal degree in co-relation 2413. Up to 192 conditions per place. [2023-08-03 20:59:30,932 INFO L119 LiptonReduction]: Number of co-enabled transitions 10772 [2023-08-03 20:59:34,199 INFO L134 LiptonReduction]: Checked pairs total: 31179 [2023-08-03 20:59:34,200 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-08-03 20:59:34,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:59:34,203 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;@4c747dec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:59:34,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:59:34,207 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:59:34,207 INFO L124 PetriNetUnfolderBase]: 2/31 cut-off events. [2023-08-03 20:59:34,207 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 20:59:34,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:59:34,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:59:34,208 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 20:59:34,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:59:34,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1731111466, now seen corresponding path program 1 times [2023-08-03 20:59:34,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:59:34,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277060023] [2023-08-03 20:59:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:59:34,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:59:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:59:34,363 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 20:59:34,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:59:34,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277060023] [2023-08-03 20:59:34,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277060023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:59:34,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:59:34,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 20:59:34,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681466757] [2023-08-03 20:59:34,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:59:34,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:59:34,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:59:34,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:59:34,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:59:34,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 333 [2023-08-03 20:59:34,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 20:59:34,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:59:34,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 333 [2023-08-03 20:59:34,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:00:06,857 INFO L124 PetriNetUnfolderBase]: 404704/504302 cut-off events. [2023-08-03 21:00:06,857 INFO L125 PetriNetUnfolderBase]: For 56500/56500 co-relation queries the response was YES. [2023-08-03 21:00:07,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008819 conditions, 504302 events. 404704/504302 cut-off events. For 56500/56500 co-relation queries the response was YES. Maximal size of possible extension queue 10962. Compared 2949669 event pairs, 186088 based on Foata normal form. 0/303259 useless extension candidates. Maximal degree in co-relation 354087. Up to 474548 conditions per place. [2023-08-03 21:00:10,060 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 59 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-08-03 21:00:10,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 82 transitions, 376 flow [2023-08-03 21:00:10,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:00:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:00:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-03 21:00:10,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2023-08-03 21:00:10,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-03 21:00:10,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-03 21:00:10,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:00:10,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-03 21:00:10,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:00:10,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:00:10,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:00:10,091 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 248 flow. Second operand 3 states and 498 transitions. [2023-08-03 21:00:10,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 82 transitions, 376 flow [2023-08-03 21:00:10,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:00:10,151 INFO L231 Difference]: Finished difference. Result has 70 places, 79 transitions, 258 flow [2023-08-03 21:00:10,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=70, PETRI_TRANSITIONS=79} [2023-08-03 21:00:10,155 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-08-03 21:00:10,155 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 79 transitions, 258 flow [2023-08-03 21:00:10,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:00:10,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:00:10,156 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 21:00:10,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 21:00:10,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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 21:00:10,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:00:10,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1222544154, now seen corresponding path program 1 times [2023-08-03 21:00:10,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:00:10,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209631462] [2023-08-03 21:00:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:00:10,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:00:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:00:10,278 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 21:00:10,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:00:10,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209631462] [2023-08-03 21:00:10,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209631462] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:00:10,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620902505] [2023-08-03 21:00:10,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:00:10,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:00:10,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:00:10,282 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 21:00:10,287 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 21:00:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:00:10,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:00:10,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:00:10,398 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 21:00:10,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:00:10,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620902505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:00:10,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:00:10,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 21:00:10,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802975279] [2023-08-03 21:00:10,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:00:10,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:00:10,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:00:10,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:00:10,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:00:10,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 333 [2023-08-03 21:00:10,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 79 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:00:10,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:00:10,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 333 [2023-08-03 21:00:10,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:00:38,847 INFO L124 PetriNetUnfolderBase]: 370202/469707 cut-off events. [2023-08-03 21:00:38,848 INFO L125 PetriNetUnfolderBase]: For 56439/56439 co-relation queries the response was YES. [2023-08-03 21:00:40,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939719 conditions, 469707 events. 370202/469707 cut-off events. For 56439/56439 co-relation queries the response was YES. Maximal size of possible extension queue 10962. Compared 2913627 event pairs, 151604 based on Foata normal form. 9/285969 useless extension candidates. Maximal degree in co-relation 428931. Up to 439993 conditions per place. [2023-08-03 21:00:42,093 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 62 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-08-03 21:00:42,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 86 transitions, 402 flow [2023-08-03 21:00:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:00:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:00:42,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 787 transitions. [2023-08-03 21:00:42,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47267267267267266 [2023-08-03 21:00:42,097 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 787 transitions. [2023-08-03 21:00:42,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 787 transitions. [2023-08-03 21:00:42,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:00:42,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 787 transitions. [2023-08-03 21:00:42,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.4) internal successors, (787), 5 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:00:42,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:00:42,103 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:00:42,104 INFO L175 Difference]: Start difference. First operand has 70 places, 79 transitions, 258 flow. Second operand 5 states and 787 transitions. [2023-08-03 21:00:42,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 86 transitions, 402 flow [2023-08-03 21:00:42,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 86 transitions, 392 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 21:00:42,135 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 263 flow [2023-08-03 21:00:42,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2023-08-03 21:00:42,137 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2023-08-03 21:00:42,137 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 263 flow [2023-08-03 21:00:42,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:00:42,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:00:42,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:00:42,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 21:00:42,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:00:42,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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 21:00:42,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:00:42,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1849774527, now seen corresponding path program 1 times [2023-08-03 21:00:42,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:00:42,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631180817] [2023-08-03 21:00:42,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:00:42,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:00:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:00:42,438 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 21:00:42,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:00:42,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631180817] [2023-08-03 21:00:42,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631180817] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:00:42,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595577548] [2023-08-03 21:00:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:00:42,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:00:42,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:00:42,442 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 21:00:42,445 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 21:00:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:00:42,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:00:42,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:00:42,526 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 21:00:42,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:00:42,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595577548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:00:42,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:00:42,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 21:00:42,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135930425] [2023-08-03 21:00:42,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:00:42,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:00:42,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:00:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:00:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:00:42,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 333 [2023-08-03 21:00:42,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:00:42,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:00:42,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 333 [2023-08-03 21:00:42,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:01:15,357 INFO L124 PetriNetUnfolderBase]: 401696/497018 cut-off events. [2023-08-03 21:01:15,358 INFO L125 PetriNetUnfolderBase]: For 48226/48226 co-relation queries the response was YES. [2023-08-03 21:01:16,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993076 conditions, 497018 events. 401696/497018 cut-off events. For 48226/48226 co-relation queries the response was YES. Maximal size of possible extension queue 11059. Compared 2869033 event pairs, 185052 based on Foata normal form. 0/297524 useless extension candidates. Maximal degree in co-relation 338631. Up to 470322 conditions per place. [2023-08-03 21:01:18,599 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 64 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-08-03 21:01:18,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 87 transitions, 413 flow [2023-08-03 21:01:18,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:01:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:01:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2023-08-03 21:01:18,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2023-08-03 21:01:18,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2023-08-03 21:01:18,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2023-08-03 21:01:18,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:01:18,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2023-08-03 21:01:18,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:01:18,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:01:18,606 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:01:18,606 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 263 flow. Second operand 3 states and 501 transitions. [2023-08-03 21:01:18,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 87 transitions, 413 flow [2023-08-03 21:01:18,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 406 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 21:01:18,620 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 271 flow [2023-08-03 21:01:18,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2023-08-03 21:01:18,623 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2023-08-03 21:01:18,623 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 271 flow [2023-08-03 21:01:18,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:01:18,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:01:18,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:01:18,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 21:01:18,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 21:01:18,838 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 21:01:18,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:01:18,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1149646357, now seen corresponding path program 1 times [2023-08-03 21:01:18,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:01:18,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775389768] [2023-08-03 21:01:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:01:18,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:01:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:01:18,918 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 21:01:18,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:01:18,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775389768] [2023-08-03 21:01:18,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775389768] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:01:18,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197015716] [2023-08-03 21:01:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:01:18,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:01:18,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:01:18,921 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 21:01:18,923 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 21:01:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:01:18,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:01:18,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:01:18,998 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 21:01:18,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:01:18,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197015716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:01:18,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:01:18,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 21:01:18,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413642515] [2023-08-03 21:01:18,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:01:18,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:01:18,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:01:19,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:01:19,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:01:19,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 333 [2023-08-03 21:01:19,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:01:19,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:01:19,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 333 [2023-08-03 21:01:19,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:01:50,215 INFO L124 PetriNetUnfolderBase]: 409416/506766 cut-off events. [2023-08-03 21:01:50,215 INFO L125 PetriNetUnfolderBase]: For 37932/37932 co-relation queries the response was YES. [2023-08-03 21:01:51,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010796 conditions, 506766 events. 409416/506766 cut-off events. For 37932/37932 co-relation queries the response was YES. Maximal size of possible extension queue 11625. Compared 2986195 event pairs, 177310 based on Foata normal form. 0/303272 useless extension candidates. Maximal degree in co-relation 345336. Up to 473274 conditions per place. [2023-08-03 21:01:53,807 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 71 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-03 21:01:53,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 443 flow [2023-08-03 21:01:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:01:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:01:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-03 21:01:53,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065065065065065 [2023-08-03 21:01:53,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-03 21:01:53,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-03 21:01:53,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:01:53,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-03 21:01:53,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:01:53,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:01:53,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:01:53,814 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 271 flow. Second operand 3 states and 506 transitions. [2023-08-03 21:01:53,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 443 flow [2023-08-03 21:01:53,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 93 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:01:53,832 INFO L231 Difference]: Finished difference. Result has 75 places, 81 transitions, 280 flow [2023-08-03 21:01:53,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2023-08-03 21:01:53,833 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2023-08-03 21:01:53,833 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 280 flow [2023-08-03 21:01:53,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:01:53,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:01:53,834 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:01:53,840 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 21:01:54,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:01:54,035 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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 21:01:54,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:01:54,035 INFO L85 PathProgramCache]: Analyzing trace with hash -454610938, now seen corresponding path program 1 times [2023-08-03 21:01:54,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:01:54,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813567756] [2023-08-03 21:01:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:01:54,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:01:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:01:54,075 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 21:01:54,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:01:54,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813567756] [2023-08-03 21:01:54,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813567756] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:01:54,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313252759] [2023-08-03 21:01:54,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:01:54,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:01:54,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:01:54,077 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 21:01:54,080 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 21:01:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:01:54,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:01:54,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:01:54,167 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 21:01:54,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:01:54,188 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 21:01:54,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313252759] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:01:54,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:01:54,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 21:01:54,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630414201] [2023-08-03 21:01:54,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:01:54,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:01:54,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:01:54,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:01:54,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:01:54,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 333 [2023-08-03 21:01:54,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:01:54,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:01:54,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 333 [2023-08-03 21:01:54,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:02:23,796 INFO L124 PetriNetUnfolderBase]: 355524/448197 cut-off events. [2023-08-03 21:02:23,796 INFO L125 PetriNetUnfolderBase]: For 39822/39822 co-relation queries the response was YES. [2023-08-03 21:02:25,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900136 conditions, 448197 events. 355524/448197 cut-off events. For 39822/39822 co-relation queries the response was YES. Maximal size of possible extension queue 11511. Compared 2779618 event pairs, 146870 based on Foata normal form. 3/273484 useless extension candidates. Maximal degree in co-relation 275788. Up to 422148 conditions per place. [2023-08-03 21:02:26,800 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 64 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-08-03 21:02:26,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 87 transitions, 422 flow [2023-08-03 21:02:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:02:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:02:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 642 transitions. [2023-08-03 21:02:26,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481981981981982 [2023-08-03 21:02:26,803 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 642 transitions. [2023-08-03 21:02:26,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 642 transitions. [2023-08-03 21:02:26,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:02:26,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 642 transitions. [2023-08-03 21:02:26,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:02:26,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:02:26,808 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:02:26,808 INFO L175 Difference]: Start difference. First operand has 75 places, 81 transitions, 280 flow. Second operand 4 states and 642 transitions. [2023-08-03 21:02:26,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 87 transitions, 422 flow [2023-08-03 21:02:26,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 87 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:02:26,819 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 276 flow [2023-08-03 21:02:26,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2023-08-03 21:02:26,820 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 9 predicate places. [2023-08-03 21:02:26,820 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 276 flow [2023-08-03 21:02:26,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:02:26,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:02:26,821 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:02:26,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 21:02:27,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:02:27,026 INFO L420 AbstractCegarLoop]: === Iteration 6 === 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 21:02:27,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:02:27,026 INFO L85 PathProgramCache]: Analyzing trace with hash -151563300, now seen corresponding path program 1 times [2023-08-03 21:02:27,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:02:27,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144163758] [2023-08-03 21:02:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:02:27,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:02:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:02:27,096 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 21:02:27,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:02:27,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144163758] [2023-08-03 21:02:27,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144163758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:02:27,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508492508] [2023-08-03 21:02:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:02:27,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:02:27,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:02:27,098 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 21:02:27,101 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 21:02:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:02:27,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:02:27,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:02:27,192 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 21:02:27,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:02:27,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508492508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:02:27,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:02:27,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 21:02:27,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301118240] [2023-08-03 21:02:27,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:02:27,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:02:27,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:02:27,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:02:27,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:02:27,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 333 [2023-08-03 21:02:27,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 276 flow. Second operand has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:02:27,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:02:27,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 333 [2023-08-03 21:02:27,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:02:54,678 INFO L124 PetriNetUnfolderBase]: 356434/448797 cut-off events. [2023-08-03 21:02:54,678 INFO L125 PetriNetUnfolderBase]: For 39142/39142 co-relation queries the response was YES. [2023-08-03 21:02:56,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901038 conditions, 448797 events. 356434/448797 cut-off events. For 39142/39142 co-relation queries the response was YES. Maximal size of possible extension queue 11511. Compared 2776415 event pairs, 79958 based on Foata normal form. 81/273743 useless extension candidates. Maximal degree in co-relation 383654. Up to 422129 conditions per place. [2023-08-03 21:02:57,780 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 76 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2023-08-03 21:02:57,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 474 flow [2023-08-03 21:02:57,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:02:57,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:02:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 799 transitions. [2023-08-03 21:02:57,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4798798798798799 [2023-08-03 21:02:57,783 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 799 transitions. [2023-08-03 21:02:57,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 799 transitions. [2023-08-03 21:02:57,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:02:57,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 799 transitions. [2023-08-03 21:02:57,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.8) internal successors, (799), 5 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:02:57,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:02:57,789 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:02:57,789 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 276 flow. Second operand 5 states and 799 transitions. [2023-08-03 21:02:57,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 474 flow [2023-08-03 21:02:57,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 460 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 21:02:57,808 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 279 flow [2023-08-03 21:02:57,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=279, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2023-08-03 21:02:57,809 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 9 predicate places. [2023-08-03 21:02:57,809 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 279 flow [2023-08-03 21:02:57,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:02:57,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:02:57,809 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:02:57,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 21:02:58,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:02:58,014 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 21:02:58,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:02:58,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1430777214, now seen corresponding path program 1 times [2023-08-03 21:02:58,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:02:58,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722265321] [2023-08-03 21:02:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:02:58,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:02:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:02:58,068 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 21:02:58,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:02:58,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722265321] [2023-08-03 21:02:58,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722265321] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:02:58,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028368637] [2023-08-03 21:02:58,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:02:58,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:02:58,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:02:58,071 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 21:02:58,073 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 21:02:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:02:58,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:02:58,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:02:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:02:58,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:02:58,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028368637] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:02:58,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:02:58,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 21:02:58,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556119019] [2023-08-03 21:02:58,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:02:58,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:02:58,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:02:58,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:02:58,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:02:58,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 333 [2023-08-03 21:02:58,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:02:58,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:02:58,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 333 [2023-08-03 21:02:58,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:03:26,925 INFO L124 PetriNetUnfolderBase]: 354230/428265 cut-off events. [2023-08-03 21:03:26,926 INFO L125 PetriNetUnfolderBase]: For 21754/21754 co-relation queries the response was YES. [2023-08-03 21:03:27,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863392 conditions, 428265 events. 354230/428265 cut-off events. For 21754/21754 co-relation queries the response was YES. Maximal size of possible extension queue 9671. Compared 2269967 event pairs, 150750 based on Foata normal form. 0/255444 useless extension candidates. Maximal degree in co-relation 389592. Up to 351593 conditions per place. [2023-08-03 21:03:29,654 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 81 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-08-03 21:03:29,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 102 transitions, 503 flow [2023-08-03 21:03:29,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:03:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:03:29,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-08-03 21:03:29,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155155155155156 [2023-08-03 21:03:29,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-08-03 21:03:29,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-08-03 21:03:29,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:03:29,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-08-03 21:03:29,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:03:29,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:03:29,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:03:29,659 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 279 flow. Second operand 3 states and 515 transitions. [2023-08-03 21:03:29,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 102 transitions, 503 flow [2023-08-03 21:03:29,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 496 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 21:03:29,678 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 284 flow [2023-08-03 21:03:29,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2023-08-03 21:03:29,679 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2023-08-03 21:03:29,679 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 284 flow [2023-08-03 21:03:29,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:03:29,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:03:29,679 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:03:29,688 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 21:03:29,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:03:29,884 INFO L420 AbstractCegarLoop]: === Iteration 8 === 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 21:03:29,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:03:29,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1146334198, now seen corresponding path program 1 times [2023-08-03 21:03:29,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:03:29,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552241629] [2023-08-03 21:03:29,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:03:29,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:03:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:03:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 21:03:29,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:03:29,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552241629] [2023-08-03 21:03:29,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552241629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:03:29,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370084374] [2023-08-03 21:03:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:03:29,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:03:29,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:03:29,930 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 21:03:29,932 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 21:03:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:03:30,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:03:30,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:03:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 21:03:30,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:03:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 21:03:30,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370084374] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:03:30,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:03:30,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 21:03:30,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899390556] [2023-08-03 21:03:30,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:03:30,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:03:30,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:03:30,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:03:30,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:03:30,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 333 [2023-08-03 21:03:30,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:03:30,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:03:30,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 333 [2023-08-03 21:03:30,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:03:52,687 INFO L124 PetriNetUnfolderBase]: 280276/350860 cut-off events. [2023-08-03 21:03:52,687 INFO L125 PetriNetUnfolderBase]: For 35498/35498 co-relation queries the response was YES. [2023-08-03 21:03:54,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721495 conditions, 350860 events. 280276/350860 cut-off events. For 35498/35498 co-relation queries the response was YES. Maximal size of possible extension queue 9641. Compared 2115117 event pairs, 117883 based on Foata normal form. 27/218177 useless extension candidates. Maximal degree in co-relation 326078. Up to 334435 conditions per place. [2023-08-03 21:03:55,306 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 73 selfloop transitions, 3 changer transitions 0/95 dead transitions. [2023-08-03 21:03:55,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 95 transitions, 460 flow [2023-08-03 21:03:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:03:55,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:03:55,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 650 transitions. [2023-08-03 21:03:55,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487987987987988 [2023-08-03 21:03:55,308 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 650 transitions. [2023-08-03 21:03:55,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 650 transitions. [2023-08-03 21:03:55,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:03:55,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 650 transitions. [2023-08-03 21:03:55,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:03:55,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:03:55,311 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:03:55,311 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 284 flow. Second operand 4 states and 650 transitions. [2023-08-03 21:03:55,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 95 transitions, 460 flow [2023-08-03 21:03:55,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 95 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:03:55,544 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 280 flow [2023-08-03 21:03:55,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2023-08-03 21:03:55,544 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2023-08-03 21:03:55,544 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 280 flow [2023-08-03 21:03:55,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:03:55,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:03:55,545 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 21:03:55,552 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 21:03:55,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:03:55,749 INFO L420 AbstractCegarLoop]: === Iteration 9 === 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 21:03:55,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:03:55,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1181507135, now seen corresponding path program 1 times [2023-08-03 21:03:55,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:03:55,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023422812] [2023-08-03 21:03:55,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:03:55,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:03:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:03:55,819 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 21:03:55,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:03:55,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023422812] [2023-08-03 21:03:55,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023422812] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:03:55,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019127119] [2023-08-03 21:03:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:03:55,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:03:55,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:03:55,821 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 21:03:55,823 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 21:03:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:03:55,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:03:55,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:03:55,916 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 21:03:55,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:03:55,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019127119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:03:55,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:03:55,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 21:03:55,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564006928] [2023-08-03 21:03:55,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:03:55,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:03:55,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:03:55,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:03:55,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:03:55,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 333 [2023-08-03 21:03:55,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 280 flow. Second operand has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:03:55,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:03:55,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 333 [2023-08-03 21:03:55,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:04:18,004 INFO L124 PetriNetUnfolderBase]: 283878/349948 cut-off events. [2023-08-03 21:04:18,004 INFO L125 PetriNetUnfolderBase]: For 23258/23258 co-relation queries the response was YES. [2023-08-03 21:04:19,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719469 conditions, 349948 events. 283878/349948 cut-off events. For 23258/23258 co-relation queries the response was YES. Maximal size of possible extension queue 9452. Compared 1986219 event pairs, 3981 based on Foata normal form. 1296/217524 useless extension candidates. Maximal degree in co-relation 329856. Up to 319216 conditions per place. [2023-08-03 21:04:21,270 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 92 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2023-08-03 21:04:21,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 114 transitions, 540 flow [2023-08-03 21:04:21,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:04:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:04:21,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 814 transitions. [2023-08-03 21:04:21,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2023-08-03 21:04:21,287 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 814 transitions. [2023-08-03 21:04:21,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 814 transitions. [2023-08-03 21:04:21,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:04:21,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 814 transitions. [2023-08-03 21:04:21,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.8) internal successors, (814), 5 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:04:21,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:04:21,291 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:04:21,291 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 280 flow. Second operand 5 states and 814 transitions. [2023-08-03 21:04:21,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 114 transitions, 540 flow [2023-08-03 21:04:21,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 114 transitions, 526 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 21:04:21,954 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 283 flow [2023-08-03 21:04:21,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2023-08-03 21:04:21,957 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2023-08-03 21:04:21,957 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 283 flow [2023-08-03 21:04:21,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:04:21,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:04:21,958 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:04:21,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 21:04:22,162 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,SelfDestructingSolverStorable9 [2023-08-03 21:04:22,162 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 21:04:22,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:04:22,162 INFO L85 PathProgramCache]: Analyzing trace with hash 665324550, now seen corresponding path program 1 times [2023-08-03 21:04:22,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:04:22,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276047370] [2023-08-03 21:04:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:04:22,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:04:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:04:22,268 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 21:04:22,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:04:22,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276047370] [2023-08-03 21:04:22,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276047370] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:04:22,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463737099] [2023-08-03 21:04:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:04:22,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:04:22,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:04:22,271 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 21:04:22,274 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 21:04:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:04:22,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:04:22,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:04:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 21:04:22,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:04:22,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463737099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:04:22,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:04:22,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 21:04:22,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827782589] [2023-08-03 21:04:22,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:04:22,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:04:22,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:04:22,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:04:22,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:04:22,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 333 [2023-08-03 21:04:22,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:04:22,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:04:22,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 333 [2023-08-03 21:04:22,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:04:45,633 INFO L124 PetriNetUnfolderBase]: 292926/358159 cut-off events. [2023-08-03 21:04:45,633 INFO L125 PetriNetUnfolderBase]: For 39009/39009 co-relation queries the response was YES. [2023-08-03 21:04:46,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735554 conditions, 358159 events. 292926/358159 cut-off events. For 39009/39009 co-relation queries the response was YES. Maximal size of possible extension queue 7517. Compared 1942086 event pairs, 114623 based on Foata normal form. 0/220974 useless extension candidates. Maximal degree in co-relation 354740. Up to 257939 conditions per place. [2023-08-03 21:04:47,995 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 82 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-08-03 21:04:47,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 102 transitions, 507 flow [2023-08-03 21:04:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:04:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:04:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-08-03 21:04:47,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155155155155156 [2023-08-03 21:04:47,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-08-03 21:04:47,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-08-03 21:04:47,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:04:47,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-08-03 21:04:47,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:04:47,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:04:47,999 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:04:47,999 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 283 flow. Second operand 3 states and 515 transitions. [2023-08-03 21:04:47,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 102 transitions, 507 flow [2023-08-03 21:04:48,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 102 transitions, 500 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 21:04:48,126 INFO L231 Difference]: Finished difference. Result has 81 places, 81 transitions, 288 flow [2023-08-03 21:04:48,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2023-08-03 21:04:48,126 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2023-08-03 21:04:48,127 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 288 flow [2023-08-03 21:04:48,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:04:48,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:04:48,127 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:04:48,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 21:04:48,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:04:48,332 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 21:04:48,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:04:48,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1178261476, now seen corresponding path program 1 times [2023-08-03 21:04:48,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:04:48,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228062108] [2023-08-03 21:04:48,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:04:48,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:04:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:04:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 21:04:48,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:04:48,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228062108] [2023-08-03 21:04:48,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228062108] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:04:48,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768860483] [2023-08-03 21:04:48,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:04:48,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:04:48,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:04:48,388 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 21:04:48,390 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 21:04:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:04:48,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:04:48,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:04:48,485 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 21:04:48,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:04:48,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768860483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:04:48,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:04:48,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 21:04:48,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327960288] [2023-08-03 21:04:48,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:04:48,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:04:48,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:04:48,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:04:48,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:04:48,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 333 [2023-08-03 21:04:48,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:04:48,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:04:48,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 333 [2023-08-03 21:04:48,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:05:11,856 INFO L124 PetriNetUnfolderBase]: 290439/356075 cut-off events. [2023-08-03 21:05:11,856 INFO L125 PetriNetUnfolderBase]: For 45167/45167 co-relation queries the response was YES. [2023-08-03 21:05:12,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744091 conditions, 356075 events. 290439/356075 cut-off events. For 45167/45167 co-relation queries the response was YES. Maximal size of possible extension queue 7274. Compared 1942609 event pairs, 135868 based on Foata normal form. 0/224527 useless extension candidates. Maximal degree in co-relation 363446. Up to 304466 conditions per place. [2023-08-03 21:05:14,112 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 83 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-08-03 21:05:14,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 103 transitions, 514 flow [2023-08-03 21:05:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:05:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:05:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-08-03 21:05:14,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155155155155156 [2023-08-03 21:05:14,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-08-03 21:05:14,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-08-03 21:05:14,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:05:14,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-08-03 21:05:14,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:05:14,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:05:14,121 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:05:14,121 INFO L175 Difference]: Start difference. First operand has 81 places, 81 transitions, 288 flow. Second operand 3 states and 515 transitions. [2023-08-03 21:05:14,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 103 transitions, 514 flow [2023-08-03 21:05:23,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 103 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:05:23,278 INFO L231 Difference]: Finished difference. Result has 83 places, 82 transitions, 298 flow [2023-08-03 21:05:23,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=83, PETRI_TRANSITIONS=82} [2023-08-03 21:05:23,279 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2023-08-03 21:05:23,279 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 82 transitions, 298 flow [2023-08-03 21:05:23,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:05:23,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:05:23,280 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:05:23,285 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 21:05:23,481 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,SelfDestructingSolverStorable11 [2023-08-03 21:05:23,481 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 21:05:23,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:05:23,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1913209057, now seen corresponding path program 1 times [2023-08-03 21:05:23,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:05:23,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978835660] [2023-08-03 21:05:23,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:05:23,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:05:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:05:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 21:05:23,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:05:23,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978835660] [2023-08-03 21:05:23,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978835660] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:05:23,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821393834] [2023-08-03 21:05:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:05:23,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:05:23,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:05:23,542 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:05:23,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 21:05:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:05:23,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:05:23,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:05:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 21:05:23,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:05:23,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 21:05:23,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821393834] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:05:23,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:05:23,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 21:05:23,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510636942] [2023-08-03 21:05:23,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:05:23,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:05:23,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:05:23,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:05:23,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:05:23,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 333 [2023-08-03 21:05:23,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 82 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:05:23,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:05:23,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 333 [2023-08-03 21:05:23,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:05:45,078 INFO L124 PetriNetUnfolderBase]: 247672/309019 cut-off events. [2023-08-03 21:05:45,078 INFO L125 PetriNetUnfolderBase]: For 30978/30978 co-relation queries the response was YES. [2023-08-03 21:05:46,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654270 conditions, 309019 events. 247672/309019 cut-off events. For 30978/30978 co-relation queries the response was YES. Maximal size of possible extension queue 7417. Compared 1840249 event pairs, 88882 based on Foata normal form. 324/200851 useless extension candidates. Maximal degree in co-relation 551178. Up to 280930 conditions per place. [2023-08-03 21:05:47,268 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 86 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2023-08-03 21:05:47,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 107 transitions, 522 flow [2023-08-03 21:05:47,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:05:47,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:05:47,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 661 transitions. [2023-08-03 21:05:47,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49624624624624625 [2023-08-03 21:05:47,270 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 661 transitions. [2023-08-03 21:05:47,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 661 transitions. [2023-08-03 21:05:47,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:05:47,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 661 transitions. [2023-08-03 21:05:47,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:05:47,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:05:47,272 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:05:47,272 INFO L175 Difference]: Start difference. First operand has 83 places, 82 transitions, 298 flow. Second operand 4 states and 661 transitions. [2023-08-03 21:05:47,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 107 transitions, 522 flow [2023-08-03 21:05:59,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 107 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:05:59,259 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 294 flow [2023-08-03 21:05:59,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2023-08-03 21:05:59,260 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 17 predicate places. [2023-08-03 21:05:59,260 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 294 flow [2023-08-03 21:05:59,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:05:59,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:05:59,260 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:05:59,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-03 21:05:59,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 21:05:59,465 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 21:05:59,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:05:59,465 INFO L85 PathProgramCache]: Analyzing trace with hash 768225683, now seen corresponding path program 1 times [2023-08-03 21:05:59,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:05:59,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033633032] [2023-08-03 21:05:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:05:59,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:05:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:05:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 21:05:59,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:05:59,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033633032] [2023-08-03 21:05:59,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033633032] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:05:59,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794987599] [2023-08-03 21:05:59,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:05:59,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:05:59,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:05:59,582 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:05:59,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 21:05:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:05:59,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:05:59,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:05:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 21:05:59,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:05:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 21:05:59,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794987599] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:05:59,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:05:59,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 21:05:59,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081110625] [2023-08-03 21:05:59,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:05:59,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:05:59,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:05:59,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:05:59,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:05:59,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 333 [2023-08-03 21:05:59,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:05:59,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:05:59,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 333 [2023-08-03 21:05:59,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:06:13,900 INFO L124 PetriNetUnfolderBase]: 183939/225034 cut-off events. [2023-08-03 21:06:13,900 INFO L125 PetriNetUnfolderBase]: For 31598/31598 co-relation queries the response was YES. [2023-08-03 21:06:14,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472833 conditions, 225034 events. 183939/225034 cut-off events. For 31598/31598 co-relation queries the response was YES. Maximal size of possible extension queue 3780. Compared 1146281 event pairs, 45830 based on Foata normal form. 2376/144438 useless extension candidates. Maximal degree in co-relation 446356. Up to 105092 conditions per place. [2023-08-03 21:06:15,234 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 95 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-08-03 21:06:15,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 117 transitions, 576 flow [2023-08-03 21:06:15,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:06:15,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:06:15,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 671 transitions. [2023-08-03 21:06:15,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037537537537538 [2023-08-03 21:06:15,236 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 671 transitions. [2023-08-03 21:06:15,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 671 transitions. [2023-08-03 21:06:15,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:06:15,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 671 transitions. [2023-08-03 21:06:15,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:06:15,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:06:15,240 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:06:15,240 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 294 flow. Second operand 4 states and 671 transitions. [2023-08-03 21:06:15,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 117 transitions, 576 flow [2023-08-03 21:06:18,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 117 transitions, 570 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 21:06:18,110 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 308 flow [2023-08-03 21:06:18,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2023-08-03 21:06:18,110 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 19 predicate places. [2023-08-03 21:06:18,110 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 308 flow [2023-08-03 21:06:18,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:06:18,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:06:18,111 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:06:18,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 21:06:18,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 21:06:18,317 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 21:06:18,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:06:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash 2051075749, now seen corresponding path program 1 times [2023-08-03 21:06:18,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:06:18,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594066279] [2023-08-03 21:06:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:06:18,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:06:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:06:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 21:06:18,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:06:18,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594066279] [2023-08-03 21:06:18,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594066279] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:06:18,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802000760] [2023-08-03 21:06:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:06:18,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:06:18,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:06:18,398 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:06:18,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 21:06:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:06:18,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:06:18,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:06:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 21:06:18,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:06:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 21:06:18,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802000760] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:06:18,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:06:18,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 21:06:18,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145082981] [2023-08-03 21:06:18,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:06:18,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:06:18,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:06:18,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:06:18,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:06:18,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 333 [2023-08-03 21:06:18,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 151.4) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:06:18,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:06:18,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 333 [2023-08-03 21:06:18,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:06:32,832 INFO L124 PetriNetUnfolderBase]: 176325/215273 cut-off events. [2023-08-03 21:06:32,833 INFO L125 PetriNetUnfolderBase]: For 55308/55308 co-relation queries the response was YES. [2023-08-03 21:06:33,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471879 conditions, 215273 events. 176325/215273 cut-off events. For 55308/55308 co-relation queries the response was YES. Maximal size of possible extension queue 3753. Compared 1082511 event pairs, 74597 based on Foata normal form. 919/136152 useless extension candidates. Maximal degree in co-relation 468225. Up to 159718 conditions per place. [2023-08-03 21:06:34,168 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 96 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2023-08-03 21:06:34,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 118 transitions, 592 flow [2023-08-03 21:06:34,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:06:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:06:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 671 transitions. [2023-08-03 21:06:34,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037537537537538 [2023-08-03 21:06:34,170 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 671 transitions. [2023-08-03 21:06:34,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 671 transitions. [2023-08-03 21:06:34,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:06:34,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 671 transitions. [2023-08-03 21:06:34,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:06:34,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:06:34,174 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:06:34,174 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 308 flow. Second operand 4 states and 671 transitions. [2023-08-03 21:06:34,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 118 transitions, 592 flow [2023-08-03 21:06:37,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 588 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 21:06:37,216 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 324 flow [2023-08-03 21:06:37,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2023-08-03 21:06:37,216 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 23 predicate places. [2023-08-03 21:06:37,216 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 324 flow [2023-08-03 21:06:37,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.4) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:06:37,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:06:37,217 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:06:37,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 21:06:37,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 21:06:37,422 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 21:06:37,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:06:37,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1830432987, now seen corresponding path program 1 times [2023-08-03 21:06:37,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:06:37,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387259149] [2023-08-03 21:06:37,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:06:37,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:06:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:06:37,488 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 21:06:37,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:06:37,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387259149] [2023-08-03 21:06:37,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387259149] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:06:37,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320650082] [2023-08-03 21:06:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:06:37,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:06:37,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:06:37,490 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:06:37,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 21:06:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:06:37,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:06:37,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:06:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 21:06:37,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:06:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 21:06:37,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320650082] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:06:37,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:06:37,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 21:06:37,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016336994] [2023-08-03 21:06:37,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:06:37,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:06:37,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:06:37,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:06:37,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:06:37,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 333 [2023-08-03 21:06:37,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:06:37,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:06:37,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 333 [2023-08-03 21:06:37,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:06:52,347 INFO L124 PetriNetUnfolderBase]: 176299/215228 cut-off events. [2023-08-03 21:06:52,348 INFO L125 PetriNetUnfolderBase]: For 53710/53710 co-relation queries the response was YES. [2023-08-03 21:06:53,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478704 conditions, 215228 events. 176299/215228 cut-off events. For 53710/53710 co-relation queries the response was YES. Maximal size of possible extension queue 3753. Compared 1082482 event pairs, 93451 based on Foata normal form. 21/135221 useless extension candidates. Maximal degree in co-relation 474971. Up to 205279 conditions per place. [2023-08-03 21:06:53,904 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 95 selfloop transitions, 3 changer transitions 3/119 dead transitions. [2023-08-03 21:06:53,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 119 transitions, 610 flow [2023-08-03 21:06:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:06:53,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:06:53,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 671 transitions. [2023-08-03 21:06:53,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037537537537538 [2023-08-03 21:06:53,906 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 671 transitions. [2023-08-03 21:06:53,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 671 transitions. [2023-08-03 21:06:53,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:06:53,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 671 transitions. [2023-08-03 21:06:53,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:06:53,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:06:53,909 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:06:53,909 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 324 flow. Second operand 4 states and 671 transitions. [2023-08-03 21:06:53,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 119 transitions, 610 flow [2023-08-03 21:07:02,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 119 transitions, 606 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 21:07:02,172 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 322 flow [2023-08-03 21:07:02,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2023-08-03 21:07:02,172 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 27 predicate places. [2023-08-03 21:07:02,173 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 322 flow [2023-08-03 21:07:02,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:07:02,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:07:02,174 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:07:02,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-03 21:07:02,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:07:02,379 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 21:07:02,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:07:02,379 INFO L85 PathProgramCache]: Analyzing trace with hash -902500546, now seen corresponding path program 1 times [2023-08-03 21:07:02,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:07:02,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271149863] [2023-08-03 21:07:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:07:02,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:07:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:07:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 21:07:03,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:07:03,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271149863] [2023-08-03 21:07:03,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271149863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:07:03,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:07:03,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:07:03,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276224887] [2023-08-03 21:07:03,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:07:03,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 21:07:03,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:07:03,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 21:07:03,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 21:07:03,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 333 [2023-08-03 21:07:03,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:07:03,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:07:03,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 333 [2023-08-03 21:07:03,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:07:19,794 INFO L124 PetriNetUnfolderBase]: 193775/238719 cut-off events. [2023-08-03 21:07:19,794 INFO L125 PetriNetUnfolderBase]: For 93110/93110 co-relation queries the response was YES. [2023-08-03 21:07:20,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520253 conditions, 238719 events. 193775/238719 cut-off events. For 93110/93110 co-relation queries the response was YES. Maximal size of possible extension queue 4667. Compared 1268187 event pairs, 12985 based on Foata normal form. 0/156395 useless extension candidates. Maximal degree in co-relation 519932. Up to 210821 conditions per place. [2023-08-03 21:07:21,425 INFO L140 encePairwiseOnDemand]: 326/333 looper letters, 150 selfloop transitions, 9 changer transitions 0/175 dead transitions. [2023-08-03 21:07:21,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 175 transitions, 1056 flow [2023-08-03 21:07:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:07:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:07:21,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 694 transitions. [2023-08-03 21:07:21,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521021021021021 [2023-08-03 21:07:21,427 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 694 transitions. [2023-08-03 21:07:21,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 694 transitions. [2023-08-03 21:07:21,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:07:21,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 694 transitions. [2023-08-03 21:07:21,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:07:21,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:07:21,431 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:07:21,431 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 322 flow. Second operand 4 states and 694 transitions. [2023-08-03 21:07:21,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 175 transitions, 1056 flow [2023-08-03 21:07:23,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 175 transitions, 1032 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-03 21:07:23,059 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 368 flow [2023-08-03 21:07:23,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=368, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-08-03 21:07:23,060 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 28 predicate places. [2023-08-03 21:07:23,060 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 368 flow [2023-08-03 21:07:23,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:07:23,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:07:23,060 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:07:23,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-03 21:07:23,060 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 21:07:23,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:07:23,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1104648140, now seen corresponding path program 1 times [2023-08-03 21:07:23,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:07:23,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430369068] [2023-08-03 21:07:23,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:07:23,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:07:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:07:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 21:07:23,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:07:23,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430369068] [2023-08-03 21:07:23,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430369068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:07:23,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:07:23,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 21:07:23,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147392224] [2023-08-03 21:07:23,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:07:23,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:07:23,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:07:23,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:07:23,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:07:23,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 333 [2023-08-03 21:07:23,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 368 flow. Second operand has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:07:23,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:07:23,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 333 [2023-08-03 21:07:23,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:08:00,536 INFO L124 PetriNetUnfolderBase]: 401428/488856 cut-off events. [2023-08-03 21:08:00,536 INFO L125 PetriNetUnfolderBase]: For 227913/227913 co-relation queries the response was YES. [2023-08-03 21:08:02,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202346 conditions, 488856 events. 401428/488856 cut-off events. For 227913/227913 co-relation queries the response was YES. Maximal size of possible extension queue 9246. Compared 2689188 event pairs, 93271 based on Foata normal form. 1098/400882 useless extension candidates. Maximal degree in co-relation 1201486. Up to 288125 conditions per place. [2023-08-03 21:08:05,016 INFO L140 encePairwiseOnDemand]: 322/333 looper letters, 206 selfloop transitions, 33 changer transitions 0/253 dead transitions. [2023-08-03 21:08:05,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 253 transitions, 1578 flow [2023-08-03 21:08:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:08:05,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:08:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 896 transitions. [2023-08-03 21:08:05,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381381381381382 [2023-08-03 21:08:05,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 896 transitions. [2023-08-03 21:08:05,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 896 transitions. [2023-08-03 21:08:05,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:08:05,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 896 transitions. [2023-08-03 21:08:05,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.2) internal successors, (896), 5 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:08:05,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:08:05,025 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:08:05,025 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 368 flow. Second operand 5 states and 896 transitions. [2023-08-03 21:08:05,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 253 transitions, 1578 flow [2023-08-03 21:08:27,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 253 transitions, 1578 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:08:27,595 INFO L231 Difference]: Finished difference. Result has 103 places, 118 transitions, 618 flow [2023-08-03 21:08:27,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=618, PETRI_PLACES=103, PETRI_TRANSITIONS=118} [2023-08-03 21:08:27,595 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 35 predicate places. [2023-08-03 21:08:27,595 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 118 transitions, 618 flow [2023-08-03 21:08:27,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:08:27,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:08:27,596 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:08:27,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 21:08:27,596 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 21:08:27,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:08:27,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1863978724, now seen corresponding path program 2 times [2023-08-03 21:08:27,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:08:27,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903992356] [2023-08-03 21:08:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:08:27,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:08:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:08:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 21:08:28,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:08:28,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903992356] [2023-08-03 21:08:28,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903992356] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:08:28,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775362529] [2023-08-03 21:08:28,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 21:08:28,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:08:28,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:08:28,105 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:08:28,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 21:08:28,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 21:08:28,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:08:28,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-03 21:08:28,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:08:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-03 21:08:28,316 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:08:28,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775362529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:08:28,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:08:28,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-08-03 21:08:28,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159308926] [2023-08-03 21:08:28,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:08:28,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 21:08:28,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:08:28,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 21:08:28,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-03 21:08:28,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 333 [2023-08-03 21:08:28,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 118 transitions, 618 flow. Second operand has 4 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:08:28,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:08:28,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 333 [2023-08-03 21:08:28,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:09:22,733 INFO L124 PetriNetUnfolderBase]: 421564/523143 cut-off events. [2023-08-03 21:09:22,733 INFO L125 PetriNetUnfolderBase]: For 653783/688730 co-relation queries the response was YES. [2023-08-03 21:09:25,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1614970 conditions, 523143 events. 421564/523143 cut-off events. For 653783/688730 co-relation queries the response was YES. Maximal size of possible extension queue 10665. Compared 3059754 event pairs, 87096 based on Foata normal form. 33434/498381 useless extension candidates. Maximal degree in co-relation 1614024. Up to 483067 conditions per place. [2023-08-03 21:09:27,352 INFO L140 encePairwiseOnDemand]: 324/333 looper letters, 208 selfloop transitions, 59 changer transitions 0/287 dead transitions. [2023-08-03 21:09:27,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 287 transitions, 2141 flow [2023-08-03 21:09:27,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:09:27,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:09:27,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 885 transitions. [2023-08-03 21:09:27,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2023-08-03 21:09:27,355 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 885 transitions. [2023-08-03 21:09:27,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 885 transitions. [2023-08-03 21:09:27,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:09:27,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 885 transitions. [2023-08-03 21:09:27,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.0) internal successors, (885), 5 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:09:27,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:09:27,358 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:09:27,358 INFO L175 Difference]: Start difference. First operand has 103 places, 118 transitions, 618 flow. Second operand 5 states and 885 transitions. [2023-08-03 21:09:27,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 287 transitions, 2141 flow Received shutdown request... [2023-08-03 21:09:42,196 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 21:09:42,196 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 21:09:43,209 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 [2023-08-03 21:09:43,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-03 21:09:47,093 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 21:09:47,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-03 21:09:47,093 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-03 21:09:47,093 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 21:09:47,094 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 21:09:47,094 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 21:09:47,094 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:09:47,095 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:09:47,095 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:09:47,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:09:47 BasicIcfg [2023-08-03 21:09:47,098 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:09:47,098 INFO L158 Benchmark]: Toolchain (without parser) took 622065.03ms. Allocated memory was 348.1MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 305.2MB in the beginning and 10.5GB in the end (delta: -10.2GB). Peak memory consumption was 8.8GB. Max. memory is 16.0GB. [2023-08-03 21:09:47,098 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 348.1MB. Free memory is still 303.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:09:47,099 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.07ms. Allocated memory is still 348.1MB. Free memory was 304.9MB in the beginning and 293.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 21:09:47,099 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.25ms. Allocated memory is still 348.1MB. Free memory was 293.0MB in the beginning and 291.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:09:47,099 INFO L158 Benchmark]: Boogie Preprocessor took 26.78ms. Allocated memory is still 348.1MB. Free memory was 291.0MB in the beginning and 289.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:09:47,099 INFO L158 Benchmark]: RCFGBuilder took 435.65ms. Allocated memory is still 348.1MB. Free memory was 289.3MB in the beginning and 269.0MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 21:09:47,099 INFO L158 Benchmark]: TraceAbstraction took 621332.82ms. Allocated memory was 348.1MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 267.9MB in the beginning and 10.5GB in the end (delta: -10.2GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. [2023-08-03 21:09:47,101 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 348.1MB. Free memory is still 303.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 226.07ms. Allocated memory is still 348.1MB. Free memory was 304.9MB in the beginning and 293.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.25ms. Allocated memory is still 348.1MB. Free memory was 293.0MB in the beginning and 291.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.78ms. Allocated memory is still 348.1MB. Free memory was 291.0MB in the beginning and 289.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 435.65ms. Allocated memory is still 348.1MB. Free memory was 289.3MB in the beginning and 269.0MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 621332.82ms. Allocated memory was 348.1MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 267.9MB in the beginning and 10.5GB in the end (delta: -10.2GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 143 PlacesBefore, 45 PlacesAfterwards, 159 TransitionsBefore, 50 TransitionsAfterwards, 4238 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 19 ConcurrentYvCompositions, 11 ChoiceCompositions, 125 TotalNumberOfCompositions, 9874 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8371, independent: 8320, independent conditional: 0, independent unconditional: 8320, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2201, independent: 2188, independent conditional: 0, independent unconditional: 2188, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8371, independent: 6132, independent conditional: 0, independent unconditional: 6132, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 2201, unknown conditional: 0, unknown unconditional: 2201] , Statistics on independence cache: Total cache size (in pairs): 268, Positive cache size: 262, Positive conditional cache size: 0, Positive unconditional cache size: 262, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 171 PlacesBefore, 68 PlacesAfterwards, 196 TransitionsBefore, 79 TransitionsAfterwards, 10772 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 25 ConcurrentYvCompositions, 14 ChoiceCompositions, 137 TotalNumberOfCompositions, 31179 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23855, independent: 23743, independent conditional: 0, independent unconditional: 23743, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5373, independent: 5352, independent conditional: 0, independent unconditional: 5352, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23855, independent: 18391, independent conditional: 0, independent unconditional: 18391, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 5373, unknown conditional: 0, unknown unconditional: 5373] , Statistics on independence cache: Total cache size (in pairs): 875, Positive cache size: 862, Positive conditional cache size: 0, Positive unconditional cache size: 862, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 159 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: 3.9s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 181 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: 617.2s, OverallIterations: 18, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 605.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1309 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1113 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3302 IncrementalHoareTripleChecker+Invalid, 3371 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 24 mSDtfsCounter, 3302 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 811 GetRequests, 736 SyntacticMatches, 13 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=618occurred in iteration=17, InterpolantAutomatonStates: 66, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1145 NumberOfCodeBlocks, 1145 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 1357 ConstructedInterpolants, 0 QuantifiedInterpolants, 3823 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2685 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 39 InterpolantComputations, 12 PerfectInterpolantSequences, 599/644 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 could not prove your program: Timeout Completed graceful shutdown