/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x9.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 01:50:53,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 01:50:53,567 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 01:50:53,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 01:50:53,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 01:50:53,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 01:50:53,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 01:50:53,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 01:50:53,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 01:50:53,604 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 01:50:53,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 01:50:53,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 01:50:53,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 01:50:53,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 01:50:53,607 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 01:50:53,607 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 01:50:53,607 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 01:50:53,607 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 01:50:53,608 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 01:50:53,608 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 01:50:53,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 01:50:53,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 01:50:53,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 01:50:53,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 01:50:53,609 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 01:50:53,609 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 01:50:53,609 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 01:50:53,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 01:50:53,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 01:50:53,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 01:50:53,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:50:53,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 01:50:53,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 01:50:53,612 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 01:50:53,612 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 01:50:53,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 01:50:53,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 01:50:53,613 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 01:50:53,613 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 01:50:53,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 01:50:53,613 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 01:50:53,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 01:50:53,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 01:50:53,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 01:50:53,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 01:50:53,935 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 01:50:53,935 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 01:50:53,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x9.wvr_bound2.c [2023-08-04 01:50:55,270 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 01:50:55,456 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 01:50:55,457 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x9.wvr_bound2.c [2023-08-04 01:50:55,463 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb137ecb0/ebe566d2c4ae417db7bf9915b3bbbf45/FLAG9af2b8b80 [2023-08-04 01:50:55,478 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb137ecb0/ebe566d2c4ae417db7bf9915b3bbbf45 [2023-08-04 01:50:55,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 01:50:55,484 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 01:50:55,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 01:50:55,484 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 01:50:55,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 01:50:55,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:50:55" (1/1) ... [2023-08-04 01:50:55,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c24a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55, skipping insertion in model container [2023-08-04 01:50:55,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:50:55" (1/1) ... [2023-08-04 01:50:55,509 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 01:50:55,688 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp2x9.wvr_bound2.c[2993,3006] [2023-08-04 01:50:55,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:50:55,701 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 01:50:55,745 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_bench-exp2x9.wvr_bound2.c[2993,3006] [2023-08-04 01:50:55,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:50:55,759 INFO L206 MainTranslator]: Completed translation [2023-08-04 01:50:55,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55 WrapperNode [2023-08-04 01:50:55,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 01:50:55,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 01:50:55,763 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 01:50:55,763 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 01:50:55,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55" (1/1) ... [2023-08-04 01:50:55,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55" (1/1) ... [2023-08-04 01:50:55,820 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 160 [2023-08-04 01:50:55,821 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 01:50:55,821 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 01:50:55,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 01:50:55,822 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 01:50:55,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55" (1/1) ... [2023-08-04 01:50:55,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55" (1/1) ... [2023-08-04 01:50:55,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55" (1/1) ... [2023-08-04 01:50:55,844 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55" (1/1) ... [2023-08-04 01:50:55,853 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55" (1/1) ... [2023-08-04 01:50:55,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55" (1/1) ... [2023-08-04 01:50:55,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55" (1/1) ... [2023-08-04 01:50:55,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55" (1/1) ... [2023-08-04 01:50:55,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 01:50:55,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 01:50:55,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 01:50:55,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 01:50:55,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55" (1/1) ... [2023-08-04 01:50:55,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:50:55,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:50:55,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 01:50:55,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 01:50:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 01:50:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 01:50:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 01:50:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 01:50:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 01:50:55,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 01:50:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 01:50:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-04 01:50:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-04 01:50:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 01:50:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 01:50:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 01:50:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 01:50:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 01:50:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 01:50:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 01:50:55,941 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 01:50:56,044 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 01:50:56,046 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 01:50:56,397 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 01:50:56,405 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 01:50:56,405 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-04 01:50:56,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:50:56 BoogieIcfgContainer [2023-08-04 01:50:56,409 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 01:50:56,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 01:50:56,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 01:50:56,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 01:50:56,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 01:50:55" (1/3) ... [2023-08-04 01:50:56,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48de84ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:50:56, skipping insertion in model container [2023-08-04 01:50:56,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:50:55" (2/3) ... [2023-08-04 01:50:56,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48de84ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:50:56, skipping insertion in model container [2023-08-04 01:50:56,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:50:56" (3/3) ... [2023-08-04 01:50:56,424 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_bench-exp2x9.wvr_bound2.c [2023-08-04 01:50:56,433 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 01:50:56,442 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 01:50:56,442 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 01:50:56,443 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 01:50:56,552 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-04 01:50:56,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 215 transitions, 498 flow [2023-08-04 01:50:56,903 INFO L124 PetriNetUnfolderBase]: 269/1527 cut-off events. [2023-08-04 01:50:56,904 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-04 01:50:56,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 1527 events. 269/1527 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10407 event pairs, 0 based on Foata normal form. 0/1276 useless extension candidates. Maximal degree in co-relation 826. Up to 33 conditions per place. [2023-08-04 01:50:56,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 215 transitions, 498 flow [2023-08-04 01:50:56,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 215 transitions, 498 flow [2023-08-04 01:50:56,947 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:50:56,960 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 190 places, 215 transitions, 498 flow [2023-08-04 01:50:56,966 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 190 places, 215 transitions, 498 flow [2023-08-04 01:50:56,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 215 transitions, 498 flow [2023-08-04 01:50:57,151 INFO L124 PetriNetUnfolderBase]: 269/1527 cut-off events. [2023-08-04 01:50:57,152 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-04 01:50:57,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 1527 events. 269/1527 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10407 event pairs, 0 based on Foata normal form. 0/1276 useless extension candidates. Maximal degree in co-relation 826. Up to 33 conditions per place. [2023-08-04 01:50:57,198 INFO L119 LiptonReduction]: Number of co-enabled transitions 11424 [2023-08-04 01:51:01,080 INFO L134 LiptonReduction]: Checked pairs total: 48078 [2023-08-04 01:51:01,080 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-04 01:51:01,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:51:01,100 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;@4bfc96cd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:51:01,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:51:01,120 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:51:01,120 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-08-04 01:51:01,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:51:01,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:51:01,121 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 01:51:01,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:51:01,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:51:01,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1034070890, now seen corresponding path program 1 times [2023-08-04 01:51:01,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:51:01,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568523952] [2023-08-04 01:51:01,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:51:01,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:51:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:51:01,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:51:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:51:01,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:51:01,354 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:51:01,355 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 01:51:01,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 01:51:01,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 01:51:01,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 01:51:01,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 01:51:01,357 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 01:51:01,359 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 01:51:01,360 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 01:51:01,360 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 01:51:01,393 INFO L144 ThreadInstanceAdder]: Constructed 32 joinOtherThreadTransitions. [2023-08-04 01:51:01,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 283 transitions, 710 flow [2023-08-04 01:51:04,849 INFO L124 PetriNetUnfolderBase]: 5482/20520 cut-off events. [2023-08-04 01:51:04,850 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:51:05,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24905 conditions, 20520 events. 5482/20520 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 217016 event pairs, 162 based on Foata normal form. 0/17559 useless extension candidates. Maximal degree in co-relation 12379. Up to 1024 conditions per place. [2023-08-04 01:51:05,059 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 283 transitions, 710 flow [2023-08-04 01:51:05,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 283 transitions, 710 flow [2023-08-04 01:51:05,183 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:51:05,184 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 283 transitions, 710 flow [2023-08-04 01:51:05,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 283 transitions, 710 flow [2023-08-04 01:51:05,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 283 transitions, 710 flow [2023-08-04 01:51:07,680 INFO L124 PetriNetUnfolderBase]: 5482/20520 cut-off events. [2023-08-04 01:51:07,680 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:51:07,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24905 conditions, 20520 events. 5482/20520 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 217016 event pairs, 162 based on Foata normal form. 0/17559 useless extension candidates. Maximal degree in co-relation 12379. Up to 1024 conditions per place. [2023-08-04 01:51:08,226 INFO L119 LiptonReduction]: Number of co-enabled transitions 30912 [2023-08-04 01:51:12,084 INFO L134 LiptonReduction]: Checked pairs total: 201808 [2023-08-04 01:51:12,084 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-08-04 01:51:12,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:51:12,087 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;@4bfc96cd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:51:12,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:51:12,103 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:51:12,103 INFO L124 PetriNetUnfolderBase]: 8/166 cut-off events. [2023-08-04 01:51:12,103 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 01:51:12,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:51:12,104 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 01:51:12,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:51:12,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:51:12,106 INFO L85 PathProgramCache]: Analyzing trace with hash -13173220, now seen corresponding path program 1 times [2023-08-04 01:51:12,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:51:12,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034368990] [2023-08-04 01:51:12,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:51:12,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:51:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:51:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:51:12,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:51:12,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034368990] [2023-08-04 01:51:12,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034368990] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:51:12,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064030198] [2023-08-04 01:51:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:51:12,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:51:12,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:51:12,357 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:51:12,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 01:51:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:51:12,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:51:12,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:51:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:51:12,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:51:12,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064030198] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:51:12,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:51:12,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 01:51:12,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303840834] [2023-08-04 01:51:12,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:51:12,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:51:12,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:51:12,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:51:12,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:51:12,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-04 01:51:12,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 150 transitions, 444 flow. Second operand has 5 states, 5 states have (on average 220.6) internal successors, (1103), 5 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:51:12,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:51:12,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-04 01:51:12,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:51:54,238 INFO L124 PetriNetUnfolderBase]: 311218/437869 cut-off events. [2023-08-04 01:51:54,239 INFO L125 PetriNetUnfolderBase]: For 94812/94812 co-relation queries the response was YES. [2023-08-04 01:51:58,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915096 conditions, 437869 events. 311218/437869 cut-off events. For 94812/94812 co-relation queries the response was YES. Maximal size of possible extension queue 6512. Compared 3281724 event pairs, 184474 based on Foata normal form. 0/408793 useless extension candidates. Maximal degree in co-relation 374791. Up to 402421 conditions per place. [2023-08-04 01:52:01,476 INFO L140 encePairwiseOnDemand]: 434/439 looper letters, 75 selfloop transitions, 5 changer transitions 0/155 dead transitions. [2023-08-04 01:52:01,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 155 transitions, 610 flow [2023-08-04 01:52:01,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:52:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:52:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1177 transitions. [2023-08-04 01:52:01,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362186788154898 [2023-08-04 01:52:01,499 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1177 transitions. [2023-08-04 01:52:01,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1177 transitions. [2023-08-04 01:52:01,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:52:01,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1177 transitions. [2023-08-04 01:52:01,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 235.4) internal successors, (1177), 5 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:01,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:01,521 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:01,523 INFO L175 Difference]: Start difference. First operand has 127 places, 150 transitions, 444 flow. Second operand 5 states and 1177 transitions. [2023-08-04 01:52:01,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 155 transitions, 610 flow [2023-08-04 01:52:01,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 155 transitions, 600 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:52:01,669 INFO L231 Difference]: Finished difference. Result has 128 places, 151 transitions, 449 flow [2023-08-04 01:52:01,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=449, PETRI_PLACES=128, PETRI_TRANSITIONS=151} [2023-08-04 01:52:01,675 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 1 predicate places. [2023-08-04 01:52:01,676 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 151 transitions, 449 flow [2023-08-04 01:52:01,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.6) internal successors, (1103), 5 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:01,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:52:01,677 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 01:52:01,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 01:52:01,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:52:01,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:52:01,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:52:01,883 INFO L85 PathProgramCache]: Analyzing trace with hash -139215115, now seen corresponding path program 1 times [2023-08-04 01:52:01,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:52:01,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965013238] [2023-08-04 01:52:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:52:01,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:52:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:52:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:52:01,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:52:01,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965013238] [2023-08-04 01:52:01,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965013238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:52:01,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:52:01,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:52:01,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515637751] [2023-08-04 01:52:01,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:52:01,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:52:01,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:52:01,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:52:01,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:52:01,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 439 [2023-08-04 01:52:01,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 151 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:01,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:52:01,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 439 [2023-08-04 01:52:01,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:52:44,563 INFO L124 PetriNetUnfolderBase]: 308542/431085 cut-off events. [2023-08-04 01:52:44,563 INFO L125 PetriNetUnfolderBase]: For 89252/89252 co-relation queries the response was YES. [2023-08-04 01:52:48,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895228 conditions, 431085 events. 308542/431085 cut-off events. For 89252/89252 co-relation queries the response was YES. Maximal size of possible extension queue 6718. Compared 3188587 event pairs, 212877 based on Foata normal form. 1/401943 useless extension candidates. Maximal degree in co-relation 277846. Up to 398767 conditions per place. [2023-08-04 01:52:51,369 INFO L140 encePairwiseOnDemand]: 436/439 looper letters, 75 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2023-08-04 01:52:51,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 152 transitions, 604 flow [2023-08-04 01:52:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:52:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:52:51,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 737 transitions. [2023-08-04 01:52:51,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5596051632498101 [2023-08-04 01:52:51,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 737 transitions. [2023-08-04 01:52:51,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 737 transitions. [2023-08-04 01:52:51,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:52:51,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 737 transitions. [2023-08-04 01:52:51,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:51,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:51,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:51,378 INFO L175 Difference]: Start difference. First operand has 128 places, 151 transitions, 449 flow. Second operand 3 states and 737 transitions. [2023-08-04 01:52:51,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 152 transitions, 604 flow [2023-08-04 01:52:51,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 152 transitions, 603 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:52:51,461 INFO L231 Difference]: Finished difference. Result has 129 places, 150 transitions, 447 flow [2023-08-04 01:52:51,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=447, PETRI_PLACES=129, PETRI_TRANSITIONS=150} [2023-08-04 01:52:51,462 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 2 predicate places. [2023-08-04 01:52:51,462 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 150 transitions, 447 flow [2023-08-04 01:52:51,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:51,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:52:51,463 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:52:51,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 01:52:51,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:52:51,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:52:51,464 INFO L85 PathProgramCache]: Analyzing trace with hash -23824915, now seen corresponding path program 1 times [2023-08-04 01:52:51,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:52:51,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628912679] [2023-08-04 01:52:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:52:51,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:52:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:52:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:52:51,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:52:51,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628912679] [2023-08-04 01:52:51,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628912679] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:52:51,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686376776] [2023-08-04 01:52:51,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:52:51,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:52:51,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:52:51,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:52:51,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 01:52:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:52:51,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:52:51,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:52:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:52:51,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:52:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:52:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686376776] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:52:51,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:52:51,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 01:52:51,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347656207] [2023-08-04 01:52:51,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:52:51,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:52:51,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:52:51,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:52:51,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:52:51,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-04 01:52:51,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 150 transitions, 447 flow. Second operand has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:52:51,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:52:51,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-04 01:52:51,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:53:33,513 INFO L124 PetriNetUnfolderBase]: 302050/418593 cut-off events. [2023-08-04 01:53:33,528 INFO L125 PetriNetUnfolderBase]: For 88256/88256 co-relation queries the response was YES. [2023-08-04 01:53:37,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872895 conditions, 418593 events. 302050/418593 cut-off events. For 88256/88256 co-relation queries the response was YES. Maximal size of possible extension queue 6282. Compared 3028297 event pairs, 179809 based on Foata normal form. 2/389964 useless extension candidates. Maximal degree in co-relation 544630. Up to 390281 conditions per place. [2023-08-04 01:53:40,250 INFO L140 encePairwiseOnDemand]: 436/439 looper letters, 75 selfloop transitions, 3 changer transitions 0/153 dead transitions. [2023-08-04 01:53:40,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 153 transitions, 608 flow [2023-08-04 01:53:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:53:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:53:40,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 955 transitions. [2023-08-04 01:53:40,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5438496583143508 [2023-08-04 01:53:40,263 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 955 transitions. [2023-08-04 01:53:40,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 955 transitions. [2023-08-04 01:53:40,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:53:40,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 955 transitions. [2023-08-04 01:53:40,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:40,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:40,270 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:40,270 INFO L175 Difference]: Start difference. First operand has 129 places, 150 transitions, 447 flow. Second operand 4 states and 955 transitions. [2023-08-04 01:53:40,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 153 transitions, 608 flow [2023-08-04 01:53:40,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 153 transitions, 604 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:53:40,377 INFO L231 Difference]: Finished difference. Result has 130 places, 149 transitions, 444 flow [2023-08-04 01:53:40,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=444, PETRI_PLACES=130, PETRI_TRANSITIONS=149} [2023-08-04 01:53:40,378 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 3 predicate places. [2023-08-04 01:53:40,378 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 149 transitions, 444 flow [2023-08-04 01:53:40,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:40,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:53:40,379 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:53:40,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 01:53:40,580 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 [2023-08-04 01:53:40,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:53:40,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:53:40,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1985037692, now seen corresponding path program 1 times [2023-08-04 01:53:40,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:53:40,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730233104] [2023-08-04 01:53:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:53:40,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:53:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:53:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:53:40,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:53:40,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730233104] [2023-08-04 01:53:40,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730233104] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:53:40,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249763918] [2023-08-04 01:53:40,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:53:40,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:53:40,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:53:40,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:53:40,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 01:53:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:53:40,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:53:40,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:53:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:53:40,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:53:40,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249763918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:53:40,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:53:40,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:53:40,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545019385] [2023-08-04 01:53:40,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:53:40,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:53:40,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:53:40,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:53:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:53:40,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-04 01:53:40,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 149 transitions, 444 flow. Second operand has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:53:40,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:53:40,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-04 01:53:40,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:54:20,683 INFO L124 PetriNetUnfolderBase]: 302050/419005 cut-off events. [2023-08-04 01:54:20,684 INFO L125 PetriNetUnfolderBase]: For 86668/86668 co-relation queries the response was YES. [2023-08-04 01:54:26,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873247 conditions, 419005 events. 302050/419005 cut-off events. For 86668/86668 co-relation queries the response was YES. Maximal size of possible extension queue 6282. Compared 3041141 event pairs, 120731 based on Foata normal form. 0/390480 useless extension candidates. Maximal degree in co-relation 544850. Up to 390112 conditions per place. [2023-08-04 01:54:28,460 INFO L140 encePairwiseOnDemand]: 435/439 looper letters, 82 selfloop transitions, 5 changer transitions 0/161 dead transitions. [2023-08-04 01:54:28,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 161 transitions, 638 flow [2023-08-04 01:54:28,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:54:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:54:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1182 transitions. [2023-08-04 01:54:28,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538496583143508 [2023-08-04 01:54:28,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1182 transitions. [2023-08-04 01:54:28,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1182 transitions. [2023-08-04 01:54:28,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:54:28,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1182 transitions. [2023-08-04 01:54:28,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 236.4) internal successors, (1182), 5 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:28,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:28,472 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:28,472 INFO L175 Difference]: Start difference. First operand has 130 places, 149 transitions, 444 flow. Second operand 5 states and 1182 transitions. [2023-08-04 01:54:28,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 161 transitions, 638 flow [2023-08-04 01:54:28,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 161 transitions, 622 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 01:54:28,539 INFO L231 Difference]: Finished difference. Result has 129 places, 151 transitions, 445 flow [2023-08-04 01:54:28,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=445, PETRI_PLACES=129, PETRI_TRANSITIONS=151} [2023-08-04 01:54:28,539 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 2 predicate places. [2023-08-04 01:54:28,540 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 151 transitions, 445 flow [2023-08-04 01:54:28,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:54:28,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:54:28,541 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:54:28,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 01:54:28,746 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 [2023-08-04 01:54:28,747 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:54:28,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:54:28,747 INFO L85 PathProgramCache]: Analyzing trace with hash -848232186, now seen corresponding path program 1 times [2023-08-04 01:54:28,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:54:28,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062269189] [2023-08-04 01:54:28,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:54:28,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:54:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:54:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:54:28,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:54:28,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062269189] [2023-08-04 01:54:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062269189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:54:28,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:54:28,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 01:54:28,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831395902] [2023-08-04 01:54:28,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:54:28,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:54:28,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:54:28,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:54:28,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:54:28,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 439 [2023-08-04 01:54:28,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 151 transitions, 445 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 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) [2023-08-04 01:54:28,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:54:28,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 439 [2023-08-04 01:54:28,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:55:06,616 INFO L124 PetriNetUnfolderBase]: 300342/414261 cut-off events. [2023-08-04 01:55:06,617 INFO L125 PetriNetUnfolderBase]: For 81546/81546 co-relation queries the response was YES. [2023-08-04 01:55:11,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 857160 conditions, 414261 events. 300342/414261 cut-off events. For 81546/81546 co-relation queries the response was YES. Maximal size of possible extension queue 6722. Compared 2965109 event pairs, 209413 based on Foata normal form. 4/385536 useless extension candidates. Maximal degree in co-relation 332426. Up to 387957 conditions per place. [2023-08-04 01:55:14,243 INFO L140 encePairwiseOnDemand]: 436/439 looper letters, 78 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2023-08-04 01:55:14,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 154 transitions, 610 flow [2023-08-04 01:55:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:55:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:55:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 739 transitions. [2023-08-04 01:55:14,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611237661351557 [2023-08-04 01:55:14,246 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 739 transitions. [2023-08-04 01:55:14,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 739 transitions. [2023-08-04 01:55:14,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:55:14,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 739 transitions. [2023-08-04 01:55:14,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.33333333333334) internal successors, (739), 3 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:14,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:14,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:14,251 INFO L175 Difference]: Start difference. First operand has 129 places, 151 transitions, 445 flow. Second operand 3 states and 739 transitions. [2023-08-04 01:55:14,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 154 transitions, 610 flow [2023-08-04 01:55:14,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 154 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:55:14,340 INFO L231 Difference]: Finished difference. Result has 130 places, 150 transitions, 443 flow [2023-08-04 01:55:14,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=443, PETRI_PLACES=130, PETRI_TRANSITIONS=150} [2023-08-04 01:55:14,341 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 3 predicate places. [2023-08-04 01:55:14,341 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 150 transitions, 443 flow [2023-08-04 01:55:14,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 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) [2023-08-04 01:55:14,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:55:14,342 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:55:14,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 01:55:14,342 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:55:14,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:55:14,342 INFO L85 PathProgramCache]: Analyzing trace with hash -50125519, now seen corresponding path program 1 times [2023-08-04 01:55:14,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:55:14,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685740004] [2023-08-04 01:55:14,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:55:14,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:55:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:55:14,383 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:55:14,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:55:14,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685740004] [2023-08-04 01:55:14,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685740004] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:55:14,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342268266] [2023-08-04 01:55:14,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:55:14,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:55:14,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:55:14,385 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:55:14,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 01:55:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:55:14,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:55:14,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:55:14,490 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:55:14,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:55:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:55:14,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342268266] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:55:14,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:55:14,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:55:14,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138087869] [2023-08-04 01:55:14,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:55:14,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:55:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:55:14,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:55:14,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:55:14,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-04 01:55:14,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 150 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 222.6) internal successors, (1113), 5 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:55:14,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:55:14,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-04 01:55:14,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:55:53,990 INFO L124 PetriNetUnfolderBase]: 296286/406797 cut-off events. [2023-08-04 01:55:53,990 INFO L125 PetriNetUnfolderBase]: For 80982/80982 co-relation queries the response was YES. [2023-08-04 01:55:58,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843772 conditions, 406797 events. 296286/406797 cut-off events. For 80982/80982 co-relation queries the response was YES. Maximal size of possible extension queue 6559. Compared 2872464 event pairs, 179121 based on Foata normal form. 8/378364 useless extension candidates. Maximal degree in co-relation 329718. Up to 382717 conditions per place. [2023-08-04 01:56:00,383 INFO L140 encePairwiseOnDemand]: 436/439 looper letters, 80 selfloop transitions, 3 changer transitions 0/157 dead transitions. [2023-08-04 01:56:00,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 157 transitions, 622 flow [2023-08-04 01:56:00,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:56:00,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:56:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 959 transitions. [2023-08-04 01:56:00,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461275626423691 [2023-08-04 01:56:00,386 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 959 transitions. [2023-08-04 01:56:00,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 959 transitions. [2023-08-04 01:56:00,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:56:00,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 959 transitions. [2023-08-04 01:56:00,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:00,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:00,391 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:00,391 INFO L175 Difference]: Start difference. First operand has 130 places, 150 transitions, 443 flow. Second operand 4 states and 959 transitions. [2023-08-04 01:56:00,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 157 transitions, 622 flow [2023-08-04 01:56:00,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 157 transitions, 618 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:56:00,511 INFO L231 Difference]: Finished difference. Result has 131 places, 149 transitions, 440 flow [2023-08-04 01:56:00,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=131, PETRI_TRANSITIONS=149} [2023-08-04 01:56:00,512 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 4 predicate places. [2023-08-04 01:56:00,512 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 149 transitions, 440 flow [2023-08-04 01:56:00,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.6) internal successors, (1113), 5 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:00,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:56:00,512 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:56:00,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 01:56:00,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:56:00,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:56:00,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:56:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash -216070789, now seen corresponding path program 1 times [2023-08-04 01:56:00,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:56:00,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976458944] [2023-08-04 01:56:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:56:00,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:56:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:56:00,801 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:56:00,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:56:00,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976458944] [2023-08-04 01:56:00,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976458944] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:56:00,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712047408] [2023-08-04 01:56:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:56:00,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:56:00,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:56:00,803 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:56:00,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 01:56:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:56:00,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:56:00,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:56:00,911 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:56:00,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:56:00,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712047408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:56:00,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:56:00,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:56:00,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343395305] [2023-08-04 01:56:00,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:56:00,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:56:00,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:56:00,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:56:00,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:56:00,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-04 01:56:00,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 149 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 222.6) internal successors, (1113), 5 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:00,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:56:00,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-04 01:56:00,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:56:36,671 INFO L124 PetriNetUnfolderBase]: 296126/407967 cut-off events. [2023-08-04 01:56:36,671 INFO L125 PetriNetUnfolderBase]: For 73934/73934 co-relation queries the response was YES. [2023-08-04 01:56:41,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844638 conditions, 407967 events. 296126/407967 cut-off events. For 73934/73934 co-relation queries the response was YES. Maximal size of possible extension queue 6568. Compared 2915152 event pairs, 63173 based on Foata normal form. 0/379980 useless extension candidates. Maximal degree in co-relation 330250. Up to 381748 conditions per place. [2023-08-04 01:56:44,968 INFO L140 encePairwiseOnDemand]: 435/439 looper letters, 89 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2023-08-04 01:56:44,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 167 transitions, 660 flow [2023-08-04 01:56:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:56:44,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:56:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1188 transitions. [2023-08-04 01:56:44,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5412300683371298 [2023-08-04 01:56:44,971 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1188 transitions. [2023-08-04 01:56:44,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1188 transitions. [2023-08-04 01:56:44,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:56:44,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1188 transitions. [2023-08-04 01:56:44,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 237.6) internal successors, (1188), 5 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:44,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:44,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:44,977 INFO L175 Difference]: Start difference. First operand has 131 places, 149 transitions, 440 flow. Second operand 5 states and 1188 transitions. [2023-08-04 01:56:44,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 167 transitions, 660 flow [2023-08-04 01:56:45,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 167 transitions, 644 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 01:56:45,010 INFO L231 Difference]: Finished difference. Result has 130 places, 151 transitions, 441 flow [2023-08-04 01:56:45,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=130, PETRI_TRANSITIONS=151} [2023-08-04 01:56:45,011 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 3 predicate places. [2023-08-04 01:56:45,011 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 151 transitions, 441 flow [2023-08-04 01:56:45,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.6) internal successors, (1113), 5 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:45,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:56:45,012 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:56:45,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 01:56:45,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:56:45,213 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:56:45,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:56:45,213 INFO L85 PathProgramCache]: Analyzing trace with hash 633942275, now seen corresponding path program 1 times [2023-08-04 01:56:45,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:56:45,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992736878] [2023-08-04 01:56:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:56:45,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:56:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:56:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:56:45,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:56:45,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992736878] [2023-08-04 01:56:45,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992736878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:56:45,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:56:45,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 01:56:45,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887260502] [2023-08-04 01:56:45,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:56:45,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:56:45,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:56:45,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:56:45,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:56:45,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 439 [2023-08-04 01:56:45,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 151 transitions, 441 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:56:45,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:56:45,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 439 [2023-08-04 01:56:45,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:57:22,439 INFO L124 PetriNetUnfolderBase]: 295134/404815 cut-off events. [2023-08-04 01:57:22,439 INFO L125 PetriNetUnfolderBase]: For 68422/68422 co-relation queries the response was YES. [2023-08-04 01:57:27,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831478 conditions, 404815 events. 295134/404815 cut-off events. For 68422/68422 co-relation queries the response was YES. Maximal size of possible extension queue 6923. Compared 2853601 event pairs, 208089 based on Foata normal form. 16/376648 useless extension candidates. Maximal degree in co-relation 325168. Up to 381117 conditions per place. [2023-08-04 01:57:30,672 INFO L140 encePairwiseOnDemand]: 436/439 looper letters, 81 selfloop transitions, 2 changer transitions 0/156 dead transitions. [2023-08-04 01:57:30,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 156 transitions, 616 flow [2023-08-04 01:57:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:57:30,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:57:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 741 transitions. [2023-08-04 01:57:30,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5626423690205011 [2023-08-04 01:57:30,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 741 transitions. [2023-08-04 01:57:30,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 741 transitions. [2023-08-04 01:57:30,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:57:30,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 741 transitions. [2023-08-04 01:57:30,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:30,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:30,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:30,678 INFO L175 Difference]: Start difference. First operand has 130 places, 151 transitions, 441 flow. Second operand 3 states and 741 transitions. [2023-08-04 01:57:30,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 156 transitions, 616 flow [2023-08-04 01:57:30,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 156 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:57:30,769 INFO L231 Difference]: Finished difference. Result has 131 places, 150 transitions, 439 flow [2023-08-04 01:57:30,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=439, PETRI_PLACES=131, PETRI_TRANSITIONS=150} [2023-08-04 01:57:30,770 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 4 predicate places. [2023-08-04 01:57:30,770 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 150 transitions, 439 flow [2023-08-04 01:57:30,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:30,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:57:30,771 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:57:30,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 01:57:30,771 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:57:30,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:57:30,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1969689580, now seen corresponding path program 1 times [2023-08-04 01:57:30,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:57:30,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021806669] [2023-08-04 01:57:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:57:30,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:57:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:57:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:57:30,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:57:30,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021806669] [2023-08-04 01:57:30,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021806669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:57:30,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883457059] [2023-08-04 01:57:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:57:30,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:57:30,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:57:30,839 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) [2023-08-04 01:57:30,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 01:57:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:57:30,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:57:30,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:57:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:57:30,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:57:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-04 01:57:30,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883457059] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:57:30,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:57:30,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:57:30,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990258206] [2023-08-04 01:57:30,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:57:30,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:57:30,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:57:30,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:57:30,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:57:30,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-04 01:57:30,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 150 transitions, 439 flow. Second operand has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:57:30,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:57:30,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-04 01:57:30,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:58:10,279 INFO L124 PetriNetUnfolderBase]: 292830/400783 cut-off events. [2023-08-04 01:58:10,279 INFO L125 PetriNetUnfolderBase]: For 68134/68134 co-relation queries the response was YES. [2023-08-04 01:58:14,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824230 conditions, 400783 events. 292830/400783 cut-off events. For 68134/68134 co-relation queries the response was YES. Maximal size of possible extension queue 6627. Compared 2799191 event pairs, 179541 based on Foata normal form. 32/372792 useless extension candidates. Maximal degree in co-relation 323676. Up to 377821 conditions per place. [2023-08-04 01:58:16,913 INFO L140 encePairwiseOnDemand]: 436/439 looper letters, 85 selfloop transitions, 3 changer transitions 0/161 dead transitions. [2023-08-04 01:58:16,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 161 transitions, 636 flow [2023-08-04 01:58:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:58:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:58:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 963 transitions. [2023-08-04 01:58:16,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484054669703873 [2023-08-04 01:58:16,915 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 963 transitions. [2023-08-04 01:58:16,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 963 transitions. [2023-08-04 01:58:16,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:58:16,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 963 transitions. [2023-08-04 01:58:16,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:16,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:16,921 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:16,921 INFO L175 Difference]: Start difference. First operand has 131 places, 150 transitions, 439 flow. Second operand 4 states and 963 transitions. [2023-08-04 01:58:16,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 161 transitions, 636 flow [2023-08-04 01:58:17,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 161 transitions, 632 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:58:17,031 INFO L231 Difference]: Finished difference. Result has 132 places, 149 transitions, 436 flow [2023-08-04 01:58:17,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=436, PETRI_PLACES=132, PETRI_TRANSITIONS=149} [2023-08-04 01:58:17,032 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 5 predicate places. [2023-08-04 01:58:17,032 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 149 transitions, 436 flow [2023-08-04 01:58:17,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:17,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:58:17,033 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:58:17,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 01:58:17,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:58:17,234 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:58:17,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:58:17,234 INFO L85 PathProgramCache]: Analyzing trace with hash 234169332, now seen corresponding path program 1 times [2023-08-04 01:58:17,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:58:17,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543507376] [2023-08-04 01:58:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:58:17,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:58:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:58:17,316 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:58:17,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:58:17,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543507376] [2023-08-04 01:58:17,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543507376] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:58:17,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665110931] [2023-08-04 01:58:17,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:58:17,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:58:17,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:58:17,318 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) [2023-08-04 01:58:17,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 01:58:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:58:17,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:58:17,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:58:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:58:17,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:58:17,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665110931] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:58:17,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:58:17,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:58:17,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132971250] [2023-08-04 01:58:17,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:58:17,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:58:17,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:58:17,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:58:17,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:58:17,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 439 [2023-08-04 01:58:17,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 149 transitions, 436 flow. Second operand has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:17,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:58:17,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 439 [2023-08-04 01:58:17,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:58:51,356 INFO L124 PetriNetUnfolderBase]: 291806/404695 cut-off events. [2023-08-04 01:58:51,356 INFO L125 PetriNetUnfolderBase]: For 44518/44518 co-relation queries the response was YES. [2023-08-04 01:58:56,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826670 conditions, 404695 events. 291806/404695 cut-off events. For 44518/44518 co-relation queries the response was YES. Maximal size of possible extension queue 6625. Compared 2938976 event pairs, 9211 based on Foata normal form. 0/378258 useless extension candidates. Maximal degree in co-relation 325548. Up to 372772 conditions per place. [2023-08-04 01:58:56,554 INFO L140 encePairwiseOnDemand]: 435/439 looper letters, 0 selfloop transitions, 0 changer transitions 173/173 dead transitions. [2023-08-04 01:58:56,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 173 transitions, 682 flow [2023-08-04 01:58:56,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:58:56,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:58:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1194 transitions. [2023-08-04 01:58:56,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439635535307517 [2023-08-04 01:58:56,564 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1194 transitions. [2023-08-04 01:58:56,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1194 transitions. [2023-08-04 01:58:56,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:58:56,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1194 transitions. [2023-08-04 01:58:56,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 238.8) internal successors, (1194), 5 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:56,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:56,583 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 439.0) internal successors, (2634), 6 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:56,584 INFO L175 Difference]: Start difference. First operand has 132 places, 149 transitions, 436 flow. Second operand 5 states and 1194 transitions. [2023-08-04 01:58:56,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 173 transitions, 682 flow [2023-08-04 01:58:56,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 173 transitions, 666 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-04 01:58:56,740 INFO L231 Difference]: Finished difference. Result has 130 places, 0 transitions, 0 flow [2023-08-04 01:58:56,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=439, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=130, PETRI_TRANSITIONS=0} [2023-08-04 01:58:56,755 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 3 predicate places. [2023-08-04 01:58:56,755 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 0 transitions, 0 flow [2023-08-04 01:58:56,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 223.6) internal successors, (1118), 5 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:58:56,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 01:58:56,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 01:58:56,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 01:58:56,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 01:58:56,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-04 01:58:56,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:58:56,957 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:58:56,958 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 01:58:56,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 283 transitions, 710 flow [2023-08-04 01:58:59,510 INFO L124 PetriNetUnfolderBase]: 5482/20520 cut-off events. [2023-08-04 01:58:59,511 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:58:59,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24905 conditions, 20520 events. 5482/20520 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 217016 event pairs, 162 based on Foata normal form. 0/17559 useless extension candidates. Maximal degree in co-relation 12379. Up to 1024 conditions per place. [2023-08-04 01:58:59,753 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 283 transitions, 710 flow [2023-08-04 01:59:00,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 283 transitions, 710 flow [2023-08-04 01:59:00,001 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:59:00,001 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 283 transitions, 710 flow [2023-08-04 01:59:00,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 283 transitions, 710 flow [2023-08-04 01:59:00,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 283 transitions, 710 flow [2023-08-04 01:59:02,261 INFO L124 PetriNetUnfolderBase]: 5482/20520 cut-off events. [2023-08-04 01:59:02,261 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2023-08-04 01:59:02,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24905 conditions, 20520 events. 5482/20520 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 217016 event pairs, 162 based on Foata normal form. 0/17559 useless extension candidates. Maximal degree in co-relation 12379. Up to 1024 conditions per place. [2023-08-04 01:59:02,666 INFO L119 LiptonReduction]: Number of co-enabled transitions 30912 [2023-08-04 01:59:06,065 INFO L134 LiptonReduction]: Checked pairs total: 226672 [2023-08-04 01:59:06,066 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-04 01:59:06,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 01:59:06,067 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;@4bfc96cd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:59:06,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 01:59:06,071 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:59:06,071 INFO L124 PetriNetUnfolderBase]: 0/64 cut-off events. [2023-08-04 01:59:06,071 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 01:59:06,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:59:06,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:59:06,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:59:06,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:59:06,072 INFO L85 PathProgramCache]: Analyzing trace with hash 81041352, now seen corresponding path program 1 times [2023-08-04 01:59:06,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:59:06,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717709353] [2023-08-04 01:59:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:59:06,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:59:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:59:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:59:06,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:59:06,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717709353] [2023-08-04 01:59:06,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717709353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:59:06,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:59:06,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:59:06,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519989978] [2023-08-04 01:59:06,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:59:06,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:59:06,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:59:06,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:59:06,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:59:06,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 442 [2023-08-04 01:59:06,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 150 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:59:06,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:59:06,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 442 [2023-08-04 01:59:06,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:59:43,349 INFO L124 PetriNetUnfolderBase]: 308544/431077 cut-off events. [2023-08-04 01:59:43,349 INFO L125 PetriNetUnfolderBase]: For 99898/99898 co-relation queries the response was YES. [2023-08-04 01:59:48,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903965 conditions, 431077 events. 308544/431077 cut-off events. For 99898/99898 co-relation queries the response was YES. Maximal size of possible extension queue 6718. Compared 3188808 event pairs, 212879 based on Foata normal form. 0/401752 useless extension candidates. Maximal degree in co-relation 373680. Up to 398775 conditions per place. [2023-08-04 01:59:52,599 INFO L140 encePairwiseOnDemand]: 438/442 looper letters, 74 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2023-08-04 01:59:52,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 152 transitions, 600 flow [2023-08-04 01:59:52,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:59:52,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:59:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 738 transitions. [2023-08-04 01:59:52,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565610859728507 [2023-08-04 01:59:52,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 738 transitions. [2023-08-04 01:59:52,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 738 transitions. [2023-08-04 01:59:52,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:59:52,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 738 transitions. [2023-08-04 01:59:52,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.0) internal successors, (738), 3 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) [2023-08-04 01:59:52,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:59:52,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:59:52,634 INFO L175 Difference]: Start difference. First operand has 127 places, 150 transitions, 444 flow. Second operand 3 states and 738 transitions. [2023-08-04 01:59:52,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 152 transitions, 600 flow [2023-08-04 01:59:52,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 152 transitions, 600 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 01:59:52,780 INFO L231 Difference]: Finished difference. Result has 129 places, 150 transitions, 454 flow [2023-08-04 01:59:52,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=129, PETRI_TRANSITIONS=150} [2023-08-04 01:59:52,781 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, 2 predicate places. [2023-08-04 01:59:52,781 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 150 transitions, 454 flow [2023-08-04 01:59:52,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:59:52,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:59:52,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:59:52,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 01:59:52,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:59:52,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:59:52,782 INFO L85 PathProgramCache]: Analyzing trace with hash -97556119, now seen corresponding path program 1 times [2023-08-04 01:59:52,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:59:52,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826394735] [2023-08-04 01:59:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:59:52,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:59:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:59:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:59:52,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:59:52,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826394735] [2023-08-04 01:59:52,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826394735] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:59:52,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770831333] [2023-08-04 01:59:52,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:59:52,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:59:52,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:59:52,854 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) [2023-08-04 01:59:52,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 01:59:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:59:52,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:59:52,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:59:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:59:52,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:59:52,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770831333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:59:52,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:59:52,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:59:52,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365821040] [2023-08-04 01:59:52,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:59:52,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:59:52,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:59:52,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:59:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:59:53,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 442 [2023-08-04 01:59:53,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 150 transitions, 454 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:59:53,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:59:53,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 442 [2023-08-04 01:59:53,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-04 02:00:22,225 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 02:00:22,230 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 [2023-08-04 02:00:23,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 02:00:23,244 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 [2023-08-04 02:00:26,227 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 02:00:26,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 02:00:26,228 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-04 02:00:26,228 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 02:00:26,228 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (2/2) [2023-08-04 02:00:26,229 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 02:00:26,229 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 02:00:26,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 02:00:26 BasicIcfg [2023-08-04 02:00:26,236 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 02:00:26,236 INFO L158 Benchmark]: Toolchain (without parser) took 570752.85ms. Allocated memory was 450.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 405.8MB in the beginning and 8.0GB in the end (delta: -7.6GB). Peak memory consumption was 8.3GB. Max. memory is 16.0GB. [2023-08-04 02:00:26,237 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 325.1MB. Free memory was 278.7MB in the beginning and 278.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 02:00:26,237 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.49ms. Allocated memory is still 450.9MB. Free memory was 405.5MB in the beginning and 393.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-04 02:00:26,237 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.32ms. Allocated memory is still 450.9MB. Free memory was 393.6MB in the beginning and 391.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 02:00:26,237 INFO L158 Benchmark]: Boogie Preprocessor took 44.17ms. Allocated memory is still 450.9MB. Free memory was 391.5MB in the beginning and 389.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 02:00:26,237 INFO L158 Benchmark]: RCFGBuilder took 543.01ms. Allocated memory is still 450.9MB. Free memory was 389.7MB in the beginning and 371.1MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-04 02:00:26,238 INFO L158 Benchmark]: TraceAbstraction took 569824.79ms. Allocated memory was 450.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 370.5MB in the beginning and 8.0GB in the end (delta: -7.7GB). Peak memory consumption was 8.3GB. Max. memory is 16.0GB. [2023-08-04 02:00:26,240 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 325.1MB. Free memory was 278.7MB in the beginning and 278.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 277.49ms. Allocated memory is still 450.9MB. Free memory was 405.5MB in the beginning and 393.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.32ms. Allocated memory is still 450.9MB. Free memory was 393.6MB in the beginning and 391.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 44.17ms. Allocated memory is still 450.9MB. Free memory was 391.5MB in the beginning and 389.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 543.01ms. Allocated memory is still 450.9MB. Free memory was 389.7MB in the beginning and 371.1MB in the end (delta: 18.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 569824.79ms. Allocated memory was 450.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 370.5MB in the beginning and 8.0GB in the end (delta: -7.7GB). Peak memory consumption was 8.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 190 PlacesBefore, 75 PlacesAfterwards, 215 TransitionsBefore, 86 TransitionsAfterwards, 11424 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 26 ConcurrentYvCompositions, 14 ChoiceCompositions, 149 TotalNumberOfCompositions, 48078 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 44393, independent: 44056, independent conditional: 0, independent unconditional: 44056, dependent: 337, dependent conditional: 0, dependent unconditional: 337, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6362, independent: 6251, independent conditional: 0, independent unconditional: 6251, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 44393, independent: 37805, independent conditional: 0, independent unconditional: 37805, dependent: 226, dependent conditional: 0, dependent unconditional: 226, unknown: 6362, unknown conditional: 0, unknown unconditional: 6362] , Statistics on independence cache: Total cache size (in pairs): 1644, Positive cache size: 1616, Positive conditional cache size: 0, Positive unconditional cache size: 1616, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 242 PlacesBefore, 127 PlacesAfterwards, 283 TransitionsBefore, 150 TransitionsAfterwards, 30912 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 34 ConcurrentYvCompositions, 18 ChoiceCompositions, 156 TotalNumberOfCompositions, 201808 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 131647, independent: 130683, independent conditional: 0, independent unconditional: 130683, dependent: 964, dependent conditional: 0, dependent unconditional: 964, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 15423, independent: 15201, independent conditional: 0, independent unconditional: 15201, dependent: 222, dependent conditional: 0, dependent unconditional: 222, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 131647, independent: 115482, independent conditional: 0, independent unconditional: 115482, dependent: 742, dependent conditional: 0, dependent unconditional: 742, unknown: 15423, unknown conditional: 0, unknown unconditional: 15423] , Statistics on independence cache: Total cache size (in pairs): 4830, Positive cache size: 4765, Positive conditional cache size: 0, Positive unconditional cache size: 4765, Negative cache size: 65, Negative conditional cache size: 0, Negative unconditional cache size: 65, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 242 PlacesBefore, 127 PlacesAfterwards, 283 TransitionsBefore, 150 TransitionsAfterwards, 30912 CoEnabledTransitionPairs, 7 FixpointIterations, 43 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 34 ConcurrentYvCompositions, 18 ChoiceCompositions, 159 TotalNumberOfCompositions, 226672 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 150465, independent: 149357, independent conditional: 0, independent unconditional: 149357, dependent: 1108, dependent conditional: 0, dependent unconditional: 1108, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 15430, independent: 15214, independent conditional: 0, independent unconditional: 15214, dependent: 216, dependent conditional: 0, dependent unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 150465, independent: 134143, independent conditional: 0, independent unconditional: 134143, dependent: 892, dependent conditional: 0, dependent unconditional: 892, unknown: 15430, unknown conditional: 0, unknown unconditional: 15430] , Statistics on independence cache: Total cache size (in pairs): 4859, Positive cache size: 4794, Positive conditional cache size: 0, Positive unconditional cache size: 4794, Negative cache size: 65, Negative conditional cache size: 0, Negative unconditional cache size: 65, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 9 procedures, 226 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 13 procedures, 270 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 475.6s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 461.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 730 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 650 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1663 IncrementalHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 17 mSDtfsCounter, 1663 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 242 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=449occurred in iteration=1, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 409 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 704 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1142 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 284/313 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 1 thread instances CFG has 13 procedures, 270 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 89.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 79.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 309 IncrementalHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 8 mSDtfsCounter, 309 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=454occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 46 SizeOfPredicates, 0 NumberOfNonLiveVariables, 119 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 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 !ENTRY org.eclipse.osgi 4 0 2023-08-04 02:00:26.296 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb137ecb0/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb137ecb0/.metadata/.log.