/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-collitem-subst.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:35:36,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:35:36,511 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:35:36,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:35:36,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:35:36,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:35:36,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:35:36,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:35:36,537 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:35:36,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:35:36,540 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:35:36,541 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:35:36,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:35:36,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:35:36,542 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:35:36,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:35:36,543 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:35:36,543 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:35:36,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:35:36,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:35:36,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:35:36,543 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:35:36,544 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:35:36,544 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:35:36,544 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:35:36,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:35:36,545 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:35:36,545 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:35:36,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:35:36,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:35:36,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:35:36,546 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:35:36,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:35:36,547 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:35:36,547 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:35:36,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:35:36,547 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:35:36,547 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:35:36,547 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:35:36,547 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:35:36,547 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:35:36,547 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:35:36,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:35:36,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:35:36,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:35:36,717 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:35:36,719 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:35:36,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-collitem-subst.wvr_bound2.c [2023-08-03 19:35:37,644 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:35:37,781 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:35:37,781 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-collitem-subst.wvr_bound2.c [2023-08-03 19:35:37,786 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3576f9f/22c5c01202c740ac9603c98e1b72a0ad/FLAG4be4aba20 [2023-08-03 19:35:37,795 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be3576f9f/22c5c01202c740ac9603c98e1b72a0ad [2023-08-03 19:35:37,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:35:37,797 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:35:37,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:35:37,798 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:35:37,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:35:37,801 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:35:37" (1/1) ... [2023-08-03 19:35:37,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29eeafa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37, skipping insertion in model container [2023-08-03 19:35:37,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:35:37" (1/1) ... [2023-08-03 19:35:37,815 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:35:37,919 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_chl-collitem-subst.wvr_bound2.c[3787,3800] [2023-08-03 19:35:37,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:35:37,926 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:35:37,943 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_chl-collitem-subst.wvr_bound2.c[3787,3800] [2023-08-03 19:35:37,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:35:37,949 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:35:37,949 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:35:37,953 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:35:37,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37 WrapperNode [2023-08-03 19:35:37,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:35:37,954 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:35:37,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:35:37,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:35:37,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37" (1/1) ... [2023-08-03 19:35:37,977 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37" (1/1) ... [2023-08-03 19:35:38,006 INFO L138 Inliner]: procedures = 23, calls = 46, calls flagged for inlining = 18, calls inlined = 40, statements flattened = 413 [2023-08-03 19:35:38,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:35:38,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:35:38,007 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:35:38,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:35:38,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37" (1/1) ... [2023-08-03 19:35:38,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37" (1/1) ... [2023-08-03 19:35:38,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37" (1/1) ... [2023-08-03 19:35:38,015 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37" (1/1) ... [2023-08-03 19:35:38,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37" (1/1) ... [2023-08-03 19:35:38,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37" (1/1) ... [2023-08-03 19:35:38,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37" (1/1) ... [2023-08-03 19:35:38,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37" (1/1) ... [2023-08-03 19:35:38,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:35:38,035 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:35:38,036 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:35:38,036 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:35:38,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37" (1/1) ... [2023-08-03 19:35:38,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:35:38,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:35:38,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 19:35:38,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 19:35:38,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:35:38,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:35:38,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:35:38,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:35:38,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:35:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:35:38,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:35:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:35:38,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:35:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:35:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 19:35:38,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 19:35:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:35:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:35:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:35:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:35:38,096 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 19:35:38,172 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:35:38,173 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:35:38,536 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:35:38,829 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:35:38,829 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 19:35:38,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:35:38 BoogieIcfgContainer [2023-08-03 19:35:38,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:35:38,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:35:38,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:35:38,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:35:38,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:35:37" (1/3) ... [2023-08-03 19:35:38,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7316f674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:35:38, skipping insertion in model container [2023-08-03 19:35:38,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:35:37" (2/3) ... [2023-08-03 19:35:38,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7316f674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:35:38, skipping insertion in model container [2023-08-03 19:35:38,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:35:38" (3/3) ... [2023-08-03 19:35:38,838 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-collitem-subst.wvr_bound2.c [2023-08-03 19:35:38,844 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:35:38,849 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:35:38,850 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:35:38,850 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:35:38,918 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:35:38,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 186 transitions, 414 flow [2023-08-03 19:35:39,030 INFO L124 PetriNetUnfolderBase]: 90/668 cut-off events. [2023-08-03 19:35:39,030 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:35:39,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 668 events. 90/668 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3143 event pairs, 0 based on Foata normal form. 0/568 useless extension candidates. Maximal degree in co-relation 397. Up to 16 conditions per place. [2023-08-03 19:35:39,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 186 transitions, 414 flow [2023-08-03 19:35:39,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 176 transitions, 394 flow [2023-08-03 19:35:39,040 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:35:39,045 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 176 transitions, 394 flow [2023-08-03 19:35:39,047 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 176 transitions, 394 flow [2023-08-03 19:35:39,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 176 transitions, 394 flow [2023-08-03 19:35:39,096 INFO L124 PetriNetUnfolderBase]: 90/588 cut-off events. [2023-08-03 19:35:39,096 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:35:39,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 588 events. 90/588 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2555 event pairs, 0 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 357. Up to 16 conditions per place. [2023-08-03 19:35:39,100 INFO L119 LiptonReduction]: Number of co-enabled transitions 1368 [2023-08-03 19:35:47,157 INFO L134 LiptonReduction]: Checked pairs total: 4949 [2023-08-03 19:35:47,157 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-03 19:35:47,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:35:47,177 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;@6bddd6a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:35:47,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:35:47,181 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:35:47,181 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:35:47,181 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:35:47,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:35:47,182 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:35:47,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:35:47,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:35:47,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2028814189, now seen corresponding path program 1 times [2023-08-03 19:35:47,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:35:47,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438588785] [2023-08-03 19:35:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:35:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:35:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:35:47,270 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:35:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:35:47,298 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:35:47,299 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:35:47,300 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:35:47,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:35:47,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:35:47,301 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:35:47,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:35:47,301 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:35:47,303 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:35:47,303 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:35:47,380 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:35:47,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 207 transitions, 504 flow [2023-08-03 19:35:47,742 INFO L124 PetriNetUnfolderBase]: 898/4360 cut-off events. [2023-08-03 19:35:47,742 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:35:47,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5034 conditions, 4360 events. 898/4360 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 35087 event pairs, 11 based on Foata normal form. 0/3706 useless extension candidates. Maximal degree in co-relation 2512. Up to 192 conditions per place. [2023-08-03 19:35:47,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 207 transitions, 504 flow [2023-08-03 19:35:47,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 197 transitions, 484 flow [2023-08-03 19:35:47,764 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:35:47,764 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 197 transitions, 484 flow [2023-08-03 19:35:47,764 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 197 transitions, 484 flow [2023-08-03 19:35:47,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 197 transitions, 484 flow [2023-08-03 19:35:48,025 INFO L124 PetriNetUnfolderBase]: 898/3720 cut-off events. [2023-08-03 19:35:48,025 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:35:48,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 3720 events. 898/3720 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 27579 event pairs, 11 based on Foata normal form. 0/3130 useless extension candidates. Maximal degree in co-relation 2192. Up to 192 conditions per place. [2023-08-03 19:35:48,058 INFO L119 LiptonReduction]: Number of co-enabled transitions 3276 [2023-08-03 19:36:00,617 INFO L134 LiptonReduction]: Checked pairs total: 13824 [2023-08-03 19:36:00,617 INFO L136 LiptonReduction]: Total number of compositions: 152 [2023-08-03 19:36:00,619 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:36:00,620 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;@6bddd6a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:36:00,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:36:00,623 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:36:00,623 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:36:00,623 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 19:36:00,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:00,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:00,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:36:00,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:00,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1218192310, now seen corresponding path program 1 times [2023-08-03 19:36:00,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:00,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611562028] [2023-08-03 19:36:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:00,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:36:00,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:00,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611562028] [2023-08-03 19:36:00,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611562028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:00,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:36:00,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:36:00,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640844259] [2023-08-03 19:36:00,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:00,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:36:00,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:00,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:36:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:36:00,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 359 [2023-08-03 19:36:00,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 60 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:00,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:00,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 359 [2023-08-03 19:36:00,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:08,729 INFO L124 PetriNetUnfolderBase]: 21389/32152 cut-off events. [2023-08-03 19:36:08,729 INFO L125 PetriNetUnfolderBase]: For 7142/7142 co-relation queries the response was YES. [2023-08-03 19:36:08,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67270 conditions, 32152 events. 21389/32152 cut-off events. For 7142/7142 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 203976 event pairs, 14517 based on Foata normal form. 0/29584 useless extension candidates. Maximal degree in co-relation 27142. Up to 30193 conditions per place. [2023-08-03 19:36:08,862 INFO L140 encePairwiseOnDemand]: 355/359 looper letters, 51 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-03 19:36:08,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 320 flow [2023-08-03 19:36:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:36:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:36:08,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-08-03 19:36:08,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078922934076138 [2023-08-03 19:36:08,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-08-03 19:36:08,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-08-03 19:36:08,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:08,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-08-03 19:36:08,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:08,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:08,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:08,884 INFO L175 Difference]: Start difference. First operand has 54 places, 60 transitions, 210 flow. Second operand 3 states and 547 transitions. [2023-08-03 19:36:08,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 320 flow [2023-08-03 19:36:08,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:36:08,893 INFO L231 Difference]: Finished difference. Result has 57 places, 60 transitions, 220 flow [2023-08-03 19:36:08,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=57, PETRI_TRANSITIONS=60} [2023-08-03 19:36:08,896 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-03 19:36:08,897 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 60 transitions, 220 flow [2023-08-03 19:36:08,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:08,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:08,897 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:36:08,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:36:08,897 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:36:08,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:08,898 INFO L85 PathProgramCache]: Analyzing trace with hash 76087941, now seen corresponding path program 1 times [2023-08-03 19:36:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:08,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057353355] [2023-08-03 19:36:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:08,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:36:09,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:09,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057353355] [2023-08-03 19:36:09,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057353355] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:09,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062254780] [2023-08-03 19:36:09,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:09,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:09,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:09,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:36:09,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 19:36:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:09,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:36:09,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:09,227 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:36:09,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:36:09,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062254780] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:09,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:36:09,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:36:09,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96360509] [2023-08-03 19:36:09,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:09,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:36:09,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:09,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:36:09,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:36:09,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 359 [2023-08-03 19:36:09,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:09,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:09,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 359 [2023-08-03 19:36:09,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:17,160 INFO L124 PetriNetUnfolderBase]: 21385/32144 cut-off events. [2023-08-03 19:36:17,160 INFO L125 PetriNetUnfolderBase]: For 7136/7136 co-relation queries the response was YES. [2023-08-03 19:36:17,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67267 conditions, 32144 events. 21385/32144 cut-off events. For 7136/7136 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 204262 event pairs, 11616 based on Foata normal form. 4/29588 useless extension candidates. Maximal degree in co-relation 40613. Up to 30172 conditions per place. [2023-08-03 19:36:17,282 INFO L140 encePairwiseOnDemand]: 355/359 looper letters, 52 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-03 19:36:17,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 338 flow [2023-08-03 19:36:17,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:36:17,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:36:17,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 872 transitions. [2023-08-03 19:36:17,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48579387186629525 [2023-08-03 19:36:17,284 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 872 transitions. [2023-08-03 19:36:17,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 872 transitions. [2023-08-03 19:36:17,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:17,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 872 transitions. [2023-08-03 19:36:17,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 174.4) internal successors, (872), 5 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:17,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:17,290 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:17,290 INFO L175 Difference]: Start difference. First operand has 57 places, 60 transitions, 220 flow. Second operand 5 states and 872 transitions. [2023-08-03 19:36:17,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 338 flow [2023-08-03 19:36:17,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 328 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:36:17,295 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 225 flow [2023-08-03 19:36:17,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-08-03 19:36:17,296 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2023-08-03 19:36:17,296 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 225 flow [2023-08-03 19:36:17,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:17,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:17,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:17,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 19:36:17,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:17,502 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:36:17,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:17,502 INFO L85 PathProgramCache]: Analyzing trace with hash 266058517, now seen corresponding path program 1 times [2023-08-03 19:36:17,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:17,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575909559] [2023-08-03 19:36:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:17,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:36:17,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:17,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575909559] [2023-08-03 19:36:17,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575909559] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:17,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726160375] [2023-08-03 19:36:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:17,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:17,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:17,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:36:17,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:36:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:17,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:36:17,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:36:17,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:36:17,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726160375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:17,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:36:17,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:36:17,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081554255] [2023-08-03 19:36:17,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:17,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:36:17,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:17,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:36:17,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:36:17,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 359 [2023-08-03 19:36:17,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:17,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:17,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 359 [2023-08-03 19:36:17,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:25,047 INFO L124 PetriNetUnfolderBase]: 21171/31780 cut-off events. [2023-08-03 19:36:25,047 INFO L125 PetriNetUnfolderBase]: For 5863/5863 co-relation queries the response was YES. [2023-08-03 19:36:25,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65835 conditions, 31780 events. 21171/31780 cut-off events. For 5863/5863 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 202037 event pairs, 14440 based on Foata normal form. 0/29292 useless extension candidates. Maximal degree in co-relation 28678. Up to 29811 conditions per place. [2023-08-03 19:36:25,168 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 54 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-08-03 19:36:25,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 65 transitions, 349 flow [2023-08-03 19:36:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:36:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:36:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2023-08-03 19:36:25,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088207985143919 [2023-08-03 19:36:25,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2023-08-03 19:36:25,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2023-08-03 19:36:25,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:25,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2023-08-03 19:36:25,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:25,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:25,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:25,174 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 225 flow. Second operand 3 states and 548 transitions. [2023-08-03 19:36:25,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 65 transitions, 349 flow [2023-08-03 19:36:25,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 65 transitions, 342 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:36:25,177 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 233 flow [2023-08-03 19:36:25,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-08-03 19:36:25,178 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2023-08-03 19:36:25,178 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 233 flow [2023-08-03 19:36:25,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:25,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:25,179 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:25,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 19:36:25,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 19:36:25,383 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:36:25,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:25,383 INFO L85 PathProgramCache]: Analyzing trace with hash 976086467, now seen corresponding path program 1 times [2023-08-03 19:36:25,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:25,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696054874] [2023-08-03 19:36:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:25,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:36:25,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:25,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696054874] [2023-08-03 19:36:25,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696054874] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:25,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696588001] [2023-08-03 19:36:25,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:25,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:25,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:25,438 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:36:25,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:36:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:25,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:36:25,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:36:25,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:36:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:36:25,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696588001] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:36:25,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:36:25,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:36:25,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305399085] [2023-08-03 19:36:25,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:36:25,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:36:25,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:25,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:36:25,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:36:25,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 359 [2023-08-03 19:36:25,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:25,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:25,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 359 [2023-08-03 19:36:25,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:32,419 INFO L124 PetriNetUnfolderBase]: 20579/30778 cut-off events. [2023-08-03 19:36:32,419 INFO L125 PetriNetUnfolderBase]: For 5665/5665 co-relation queries the response was YES. [2023-08-03 19:36:32,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63843 conditions, 30778 events. 20579/30778 cut-off events. For 5665/5665 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 192910 event pairs, 11374 based on Foata normal form. 2/28424 useless extension candidates. Maximal degree in co-relation 24794. Up to 28967 conditions per place. [2023-08-03 19:36:32,528 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 19:36:32,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 346 flow [2023-08-03 19:36:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:36:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:36:32,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 708 transitions. [2023-08-03 19:36:32,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49303621169916434 [2023-08-03 19:36:32,530 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 708 transitions. [2023-08-03 19:36:32,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 708 transitions. [2023-08-03 19:36:32,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:32,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 708 transitions. [2023-08-03 19:36:32,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:32,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:32,534 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:32,534 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 233 flow. Second operand 4 states and 708 transitions. [2023-08-03 19:36:32,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 346 flow [2023-08-03 19:36:32,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 344 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:36:32,539 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 228 flow [2023-08-03 19:36:32,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-08-03 19:36:32,539 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2023-08-03 19:36:32,539 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 228 flow [2023-08-03 19:36:32,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:32,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:32,540 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:32,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 19:36:32,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:32,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:36:32,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash -133590227, now seen corresponding path program 1 times [2023-08-03 19:36:32,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:32,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299633915] [2023-08-03 19:36:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:32,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:36:32,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:32,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299633915] [2023-08-03 19:36:32,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299633915] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:32,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491935819] [2023-08-03 19:36:32,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:32,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:32,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:32,813 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:36:32,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:36:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:32,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:36:32,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:36:32,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:36:32,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491935819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:32,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:36:32,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:36:32,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908755476] [2023-08-03 19:36:32,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:32,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:36:32,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:32,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:36:32,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:36:32,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 359 [2023-08-03 19:36:32,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:32,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:32,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 359 [2023-08-03 19:36:32,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:39,630 INFO L124 PetriNetUnfolderBase]: 20547/30722 cut-off events. [2023-08-03 19:36:39,630 INFO L125 PetriNetUnfolderBase]: For 5645/5645 co-relation queries the response was YES. [2023-08-03 19:36:39,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63722 conditions, 30722 events. 20547/30722 cut-off events. For 5645/5645 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 192595 event pairs, 5780 based on Foata normal form. 16/28382 useless extension candidates. Maximal degree in co-relation 38931. Up to 28798 conditions per place. [2023-08-03 19:36:39,755 INFO L140 encePairwiseOnDemand]: 355/359 looper letters, 59 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-03 19:36:39,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 372 flow [2023-08-03 19:36:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:36:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:36:39,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 878 transitions. [2023-08-03 19:36:39,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891364902506964 [2023-08-03 19:36:39,757 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 878 transitions. [2023-08-03 19:36:39,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 878 transitions. [2023-08-03 19:36:39,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:39,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 878 transitions. [2023-08-03 19:36:39,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:39,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:39,762 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:39,762 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 228 flow. Second operand 5 states and 878 transitions. [2023-08-03 19:36:39,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 372 flow [2023-08-03 19:36:39,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 358 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:36:39,766 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 229 flow [2023-08-03 19:36:39,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-08-03 19:36:39,767 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2023-08-03 19:36:39,767 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 229 flow [2023-08-03 19:36:39,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:39,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:39,768 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:39,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 19:36:39,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:39,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:36:39,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:39,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1158330922, now seen corresponding path program 1 times [2023-08-03 19:36:39,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:39,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10108160] [2023-08-03 19:36:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:39,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:36:40,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:40,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10108160] [2023-08-03 19:36:40,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10108160] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:40,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359800430] [2023-08-03 19:36:40,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:40,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:40,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:40,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:36:40,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:36:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:40,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:36:40,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:36:40,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:36:40,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359800430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:40,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:36:40,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:36:40,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258859604] [2023-08-03 19:36:40,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:40,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:36:40,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:40,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:36:40,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:36:40,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 359 [2023-08-03 19:36:40,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:40,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:40,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 359 [2023-08-03 19:36:40,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:46,909 INFO L124 PetriNetUnfolderBase]: 20523/31040 cut-off events. [2023-08-03 19:36:46,909 INFO L125 PetriNetUnfolderBase]: For 3626/3626 co-relation queries the response was YES. [2023-08-03 19:36:46,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63361 conditions, 31040 events. 20523/31040 cut-off events. For 3626/3626 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 199619 event pairs, 14176 based on Foata normal form. 0/28708 useless extension candidates. Maximal degree in co-relation 38713. Up to 28639 conditions per place. [2023-08-03 19:36:47,015 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 57 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-08-03 19:36:47,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 363 flow [2023-08-03 19:36:47,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:36:47,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:36:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 550 transitions. [2023-08-03 19:36:47,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510677808727948 [2023-08-03 19:36:47,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 550 transitions. [2023-08-03 19:36:47,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 550 transitions. [2023-08-03 19:36:47,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:47,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 550 transitions. [2023-08-03 19:36:47,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:47,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:47,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:47,020 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 229 flow. Second operand 3 states and 550 transitions. [2023-08-03 19:36:47,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 363 flow [2023-08-03 19:36:47,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 67 transitions, 356 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:36:47,027 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 237 flow [2023-08-03 19:36:47,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-08-03 19:36:47,028 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-08-03 19:36:47,028 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 237 flow [2023-08-03 19:36:47,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:47,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:47,028 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:47,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 19:36:47,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:47,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:36:47,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:47,234 INFO L85 PathProgramCache]: Analyzing trace with hash 249866225, now seen corresponding path program 1 times [2023-08-03 19:36:47,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:47,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594262766] [2023-08-03 19:36:47,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:47,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:36:47,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:47,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594262766] [2023-08-03 19:36:47,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594262766] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:47,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221031114] [2023-08-03 19:36:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:47,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:47,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:47,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:36:47,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:36:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:47,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:36:47,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:36:47,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:36:47,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221031114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:36:47,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:36:47,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:36:47,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156955014] [2023-08-03 19:36:47,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:36:47,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:36:47,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:47,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:36:47,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:36:47,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 359 [2023-08-03 19:36:47,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:47,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:47,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 359 [2023-08-03 19:36:47,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:36:53,595 INFO L124 PetriNetUnfolderBase]: 18859/28736 cut-off events. [2023-08-03 19:36:53,595 INFO L125 PetriNetUnfolderBase]: For 3426/3426 co-relation queries the response was YES. [2023-08-03 19:36:53,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59174 conditions, 28736 events. 18859/28736 cut-off events. For 3426/3426 co-relation queries the response was YES. Maximal size of possible extension queue 923. Compared 184835 event pairs, 13848 based on Foata normal form. 0/26740 useless extension candidates. Maximal degree in co-relation 36667. Up to 24559 conditions per place. [2023-08-03 19:36:53,726 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 66 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-03 19:36:53,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 415 flow [2023-08-03 19:36:53,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:36:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:36:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-08-03 19:36:53,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171773444753947 [2023-08-03 19:36:53,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-08-03 19:36:53,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-08-03 19:36:53,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:36:53,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-08-03 19:36:53,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:53,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:53,731 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:53,731 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 237 flow. Second operand 3 states and 557 transitions. [2023-08-03 19:36:53,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 415 flow [2023-08-03 19:36:53,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:36:53,734 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 246 flow [2023-08-03 19:36:53,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2023-08-03 19:36:53,735 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2023-08-03 19:36:53,735 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 246 flow [2023-08-03 19:36:53,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:53,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:36:53,736 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:36:53,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 19:36:53,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:53,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:36:53,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:36:53,943 INFO L85 PathProgramCache]: Analyzing trace with hash 95965047, now seen corresponding path program 1 times [2023-08-03 19:36:53,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:36:53,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456913062] [2023-08-03 19:36:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:53,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:36:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:36:53,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:36:53,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456913062] [2023-08-03 19:36:53,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456913062] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:36:53,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596600594] [2023-08-03 19:36:53,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:36:53,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:36:53,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:36:53,972 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:36:53,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:36:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:36:54,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:36:54,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:36:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:36:54,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:36:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:36:54,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596600594] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:36:54,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:36:54,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:36:54,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268946213] [2023-08-03 19:36:54,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:36:54,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:36:54,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:36:54,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:36:54,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:36:54,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 359 [2023-08-03 19:36:54,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 166.6) internal successors, (833), 5 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:36:54,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:36:54,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 359 [2023-08-03 19:36:54,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:00,017 INFO L124 PetriNetUnfolderBase]: 18011/27400 cut-off events. [2023-08-03 19:37:00,018 INFO L125 PetriNetUnfolderBase]: For 4239/4239 co-relation queries the response was YES. [2023-08-03 19:37:00,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58065 conditions, 27400 events. 18011/27400 cut-off events. For 4239/4239 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 173442 event pairs, 10290 based on Foata normal form. 8/26077 useless extension candidates. Maximal degree in co-relation 36435. Up to 25503 conditions per place. [2023-08-03 19:37:00,134 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 59 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-08-03 19:37:00,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 69 transitions, 380 flow [2023-08-03 19:37:00,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:37:00,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:37:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 712 transitions. [2023-08-03 19:37:00,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4958217270194986 [2023-08-03 19:37:00,136 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 712 transitions. [2023-08-03 19:37:00,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 712 transitions. [2023-08-03 19:37:00,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:00,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 712 transitions. [2023-08-03 19:37:00,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:00,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:00,139 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:00,139 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 246 flow. Second operand 4 states and 712 transitions. [2023-08-03 19:37:00,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 69 transitions, 380 flow [2023-08-03 19:37:00,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 378 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:37:00,145 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 242 flow [2023-08-03 19:37:00,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-03 19:37:00,145 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2023-08-03 19:37:00,145 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 242 flow [2023-08-03 19:37:00,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.6) internal successors, (833), 5 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:00,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:00,146 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:00,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 19:37:00,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:00,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:37:00,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:00,350 INFO L85 PathProgramCache]: Analyzing trace with hash -861146465, now seen corresponding path program 1 times [2023-08-03 19:37:00,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:00,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593455545] [2023-08-03 19:37:00,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:00,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:37:00,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:00,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593455545] [2023-08-03 19:37:00,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593455545] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:00,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123742638] [2023-08-03 19:37:00,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:00,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:00,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:00,389 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:37:00,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:37:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:00,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:37:00,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:00,546 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:37:00,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:37:00,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123742638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:37:00,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:37:00,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:37:00,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830275830] [2023-08-03 19:37:00,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:37:00,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:37:00,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:00,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:37:00,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:37:00,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 359 [2023-08-03 19:37:00,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 166.6) internal successors, (833), 5 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:00,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:00,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 359 [2023-08-03 19:37:00,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:06,447 INFO L124 PetriNetUnfolderBase]: 17819/27112 cut-off events. [2023-08-03 19:37:06,448 INFO L125 PetriNetUnfolderBase]: For 3835/3835 co-relation queries the response was YES. [2023-08-03 19:37:06,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57213 conditions, 27112 events. 17819/27112 cut-off events. For 3835/3835 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 171528 event pairs, 766 based on Foata normal form. 64/25845 useless extension candidates. Maximal degree in co-relation 36017. Up to 24534 conditions per place. [2023-08-03 19:37:06,533 INFO L140 encePairwiseOnDemand]: 355/359 looper letters, 67 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-08-03 19:37:06,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 416 flow [2023-08-03 19:37:06,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:37:06,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:37:06,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 884 transitions. [2023-08-03 19:37:06,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924791086350975 [2023-08-03 19:37:06,535 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 884 transitions. [2023-08-03 19:37:06,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 884 transitions. [2023-08-03 19:37:06,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:06,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 884 transitions. [2023-08-03 19:37:06,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:06,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:06,539 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:06,539 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 242 flow. Second operand 5 states and 884 transitions. [2023-08-03 19:37:06,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 416 flow [2023-08-03 19:37:06,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 402 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:37:06,544 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 245 flow [2023-08-03 19:37:06,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-03 19:37:06,545 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2023-08-03 19:37:06,545 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 245 flow [2023-08-03 19:37:06,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.6) internal successors, (833), 5 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:06,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:06,545 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:06,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 19:37:06,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 19:37:06,749 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:37:06,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:06,749 INFO L85 PathProgramCache]: Analyzing trace with hash 216553425, now seen corresponding path program 1 times [2023-08-03 19:37:06,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:06,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234457979] [2023-08-03 19:37:06,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:06,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:37:06,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:06,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234457979] [2023-08-03 19:37:06,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234457979] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:06,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476020318] [2023-08-03 19:37:06,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:06,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:06,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:06,815 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:37:06,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:37:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:06,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:37:06,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:37:06,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:37:06,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476020318] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:37:06,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:37:06,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:37:06,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873149318] [2023-08-03 19:37:06,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:37:06,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:37:06,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:06,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:37:06,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:06,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 359 [2023-08-03 19:37:06,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:06,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:06,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 359 [2023-08-03 19:37:06,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:12,713 INFO L124 PetriNetUnfolderBase]: 17130/26587 cut-off events. [2023-08-03 19:37:12,713 INFO L125 PetriNetUnfolderBase]: For 4135/4135 co-relation queries the response was YES. [2023-08-03 19:37:12,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55951 conditions, 26587 events. 17130/26587 cut-off events. For 4135/4135 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 173741 event pairs, 11236 based on Foata normal form. 0/25640 useless extension candidates. Maximal degree in co-relation 36216. Up to 18927 conditions per place. [2023-08-03 19:37:12,795 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 67 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-03 19:37:12,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 423 flow [2023-08-03 19:37:12,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:37:12,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:37:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-08-03 19:37:12,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171773444753947 [2023-08-03 19:37:12,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-08-03 19:37:12,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-08-03 19:37:12,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:12,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-08-03 19:37:12,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:12,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:12,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:12,799 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 245 flow. Second operand 3 states and 557 transitions. [2023-08-03 19:37:12,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 423 flow [2023-08-03 19:37:12,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 416 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:37:12,804 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 250 flow [2023-08-03 19:37:12,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2023-08-03 19:37:12,804 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2023-08-03 19:37:12,805 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 250 flow [2023-08-03 19:37:12,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:12,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:12,805 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:12,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:37:13,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:13,005 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:37:13,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:13,006 INFO L85 PathProgramCache]: Analyzing trace with hash -993653062, now seen corresponding path program 1 times [2023-08-03 19:37:13,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:13,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880950210] [2023-08-03 19:37:13,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:13,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:37:13,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:13,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880950210] [2023-08-03 19:37:13,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880950210] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:13,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495264864] [2023-08-03 19:37:13,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:13,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:13,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:13,071 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:37:13,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:37:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:13,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:37:13,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:37:13,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:37:13,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495264864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:37:13,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:37:13,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:37:13,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284820003] [2023-08-03 19:37:13,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:37:13,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:37:13,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:13,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:37:13,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:13,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 359 [2023-08-03 19:37:13,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:13,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:13,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 359 [2023-08-03 19:37:13,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:18,919 INFO L124 PetriNetUnfolderBase]: 16921/26510 cut-off events. [2023-08-03 19:37:18,919 INFO L125 PetriNetUnfolderBase]: For 5291/5291 co-relation queries the response was YES. [2023-08-03 19:37:18,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58083 conditions, 26510 events. 16921/26510 cut-off events. For 5291/5291 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 174185 event pairs, 12627 based on Foata normal form. 0/26276 useless extension candidates. Maximal degree in co-relation 38209. Up to 21081 conditions per place. [2023-08-03 19:37:19,006 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 68 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-03 19:37:19,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 76 transitions, 430 flow [2023-08-03 19:37:19,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:37:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:37:19,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-08-03 19:37:19,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171773444753947 [2023-08-03 19:37:19,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-08-03 19:37:19,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-08-03 19:37:19,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:19,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-08-03 19:37:19,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:19,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:19,012 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:19,012 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 250 flow. Second operand 3 states and 557 transitions. [2023-08-03 19:37:19,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 76 transitions, 430 flow [2023-08-03 19:37:19,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 76 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:37:19,135 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 260 flow [2023-08-03 19:37:19,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-08-03 19:37:19,136 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2023-08-03 19:37:19,136 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 260 flow [2023-08-03 19:37:19,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:19,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:19,136 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:19,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:37:19,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-03 19:37:19,337 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:37:19,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:19,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1788095560, now seen corresponding path program 1 times [2023-08-03 19:37:19,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:19,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917378624] [2023-08-03 19:37:19,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:19,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:37:19,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:19,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917378624] [2023-08-03 19:37:19,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917378624] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:19,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893964756] [2023-08-03 19:37:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:19,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:19,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:19,409 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:37:19,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:37:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:19,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:37:19,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:37:19,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:37:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:37:19,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893964756] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:37:19,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:37:19,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:37:19,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946961518] [2023-08-03 19:37:19,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:37:19,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:37:19,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:19,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:37:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:19,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 359 [2023-08-03 19:37:19,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:19,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:19,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 359 [2023-08-03 19:37:19,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:25,174 INFO L124 PetriNetUnfolderBase]: 16521/25886 cut-off events. [2023-08-03 19:37:25,174 INFO L125 PetriNetUnfolderBase]: For 5005/5005 co-relation queries the response was YES. [2023-08-03 19:37:25,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57464 conditions, 25886 events. 16521/25886 cut-off events. For 5005/5005 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 168534 event pairs, 9695 based on Foata normal form. 32/25917 useless extension candidates. Maximal degree in co-relation 42454. Up to 23507 conditions per place. [2023-08-03 19:37:25,262 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 65 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2023-08-03 19:37:25,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 414 flow [2023-08-03 19:37:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:37:25,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:37:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 716 transitions. [2023-08-03 19:37:25,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4986072423398329 [2023-08-03 19:37:25,264 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 716 transitions. [2023-08-03 19:37:25,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 716 transitions. [2023-08-03 19:37:25,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:25,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 716 transitions. [2023-08-03 19:37:25,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:25,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:25,266 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:25,267 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 260 flow. Second operand 4 states and 716 transitions. [2023-08-03 19:37:25,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 414 flow [2023-08-03 19:37:25,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:37:25,450 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 256 flow [2023-08-03 19:37:25,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2023-08-03 19:37:25,451 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2023-08-03 19:37:25,451 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 256 flow [2023-08-03 19:37:25,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:25,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:25,451 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:25,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-03 19:37:25,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 19:37:25,653 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:37:25,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:25,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1645397582, now seen corresponding path program 1 times [2023-08-03 19:37:25,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:25,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265116128] [2023-08-03 19:37:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:25,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:37:25,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:25,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265116128] [2023-08-03 19:37:25,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265116128] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:25,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420691247] [2023-08-03 19:37:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:25,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:25,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:25,727 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:37:25,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:37:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:25,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:37:25,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:37:25,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:37:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:37:25,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420691247] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:37:25,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:37:25,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:37:25,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277992692] [2023-08-03 19:37:25,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:37:25,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:37:25,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:25,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:37:25,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:25,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 359 [2023-08-03 19:37:25,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 256 flow. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:25,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:25,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 359 [2023-08-03 19:37:25,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:29,471 INFO L124 PetriNetUnfolderBase]: 10381/16522 cut-off events. [2023-08-03 19:37:29,472 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2023-08-03 19:37:29,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36751 conditions, 16522 events. 10381/16522 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 100024 event pairs, 5440 based on Foata normal form. 192/16713 useless extension candidates. Maximal degree in co-relation 31654. Up to 9564 conditions per place. [2023-08-03 19:37:29,532 INFO L140 encePairwiseOnDemand]: 355/359 looper letters, 72 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2023-08-03 19:37:29,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 82 transitions, 460 flow [2023-08-03 19:37:29,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:37:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:37:29,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 724 transitions. [2023-08-03 19:37:29,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041782729805014 [2023-08-03 19:37:29,534 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 724 transitions. [2023-08-03 19:37:29,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 724 transitions. [2023-08-03 19:37:29,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:29,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 724 transitions. [2023-08-03 19:37:29,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:29,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:29,537 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:29,537 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 256 flow. Second operand 4 states and 724 transitions. [2023-08-03 19:37:29,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 82 transitions, 460 flow [2023-08-03 19:37:29,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 454 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:37:29,603 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 270 flow [2023-08-03 19:37:29,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2023-08-03 19:37:29,603 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2023-08-03 19:37:29,603 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 270 flow [2023-08-03 19:37:29,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:29,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:29,604 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:29,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 19:37:29,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 19:37:29,805 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:37:29,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:29,805 INFO L85 PathProgramCache]: Analyzing trace with hash -560924324, now seen corresponding path program 1 times [2023-08-03 19:37:29,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:29,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473644856] [2023-08-03 19:37:29,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:29,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:37:29,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:29,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473644856] [2023-08-03 19:37:29,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473644856] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:29,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667907665] [2023-08-03 19:37:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:29,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:29,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:29,880 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:37:29,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 19:37:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:30,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:37:30,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:37:30,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:37:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:37:30,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667907665] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:37:30,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:37:30,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:37:30,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823733452] [2023-08-03 19:37:30,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:37:30,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:37:30,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:30,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:37:30,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:30,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 359 [2023-08-03 19:37:30,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:30,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:30,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 359 [2023-08-03 19:37:30,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:33,354 INFO L124 PetriNetUnfolderBase]: 9421/14931 cut-off events. [2023-08-03 19:37:33,354 INFO L125 PetriNetUnfolderBase]: For 6527/6527 co-relation queries the response was YES. [2023-08-03 19:37:33,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35869 conditions, 14931 events. 9421/14931 cut-off events. For 6527/6527 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 88089 event pairs, 5948 based on Foata normal form. 233/15163 useless extension candidates. Maximal degree in co-relation 34761. Up to 8751 conditions per place. [2023-08-03 19:37:33,414 INFO L140 encePairwiseOnDemand]: 355/359 looper letters, 73 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-03 19:37:33,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 476 flow [2023-08-03 19:37:33,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:37:33,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:37:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 724 transitions. [2023-08-03 19:37:33,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041782729805014 [2023-08-03 19:37:33,416 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 724 transitions. [2023-08-03 19:37:33,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 724 transitions. [2023-08-03 19:37:33,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:33,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 724 transitions. [2023-08-03 19:37:33,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:33,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:33,419 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:33,419 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 270 flow. Second operand 4 states and 724 transitions. [2023-08-03 19:37:33,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 476 flow [2023-08-03 19:37:33,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 83 transitions, 472 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:37:33,485 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 286 flow [2023-08-03 19:37:33,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2023-08-03 19:37:33,485 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2023-08-03 19:37:33,485 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 286 flow [2023-08-03 19:37:33,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:33,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:33,486 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:33,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 19:37:33,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 19:37:33,686 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:37:33,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:33,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1571650, now seen corresponding path program 1 times [2023-08-03 19:37:33,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:33,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601877036] [2023-08-03 19:37:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:33,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:37:33,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:33,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601877036] [2023-08-03 19:37:33,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601877036] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:33,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391597305] [2023-08-03 19:37:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:33,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:33,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:33,813 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:37:33,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 19:37:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:34,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:37:34,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:37:34,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:37:34,052 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:37:34,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391597305] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:37:34,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:37:34,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:37:34,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663564543] [2023-08-03 19:37:34,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:37:34,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:37:34,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:34,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:37:34,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:34,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 359 [2023-08-03 19:37:34,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:34,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:34,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 359 [2023-08-03 19:37:34,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:37,337 INFO L124 PetriNetUnfolderBase]: 9409/14896 cut-off events. [2023-08-03 19:37:37,338 INFO L125 PetriNetUnfolderBase]: For 7481/7481 co-relation queries the response was YES. [2023-08-03 19:37:37,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37502 conditions, 14896 events. 9409/14896 cut-off events. For 7481/7481 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87827 event pairs, 8414 based on Foata normal form. 13/14908 useless extension candidates. Maximal degree in co-relation 36401. Up to 13454 conditions per place. [2023-08-03 19:37:37,398 INFO L140 encePairwiseOnDemand]: 355/359 looper letters, 72 selfloop transitions, 3 changer transitions 3/84 dead transitions. [2023-08-03 19:37:37,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 494 flow [2023-08-03 19:37:37,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:37:37,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:37:37,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 724 transitions. [2023-08-03 19:37:37,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041782729805014 [2023-08-03 19:37:37,400 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 724 transitions. [2023-08-03 19:37:37,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 724 transitions. [2023-08-03 19:37:37,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:37,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 724 transitions. [2023-08-03 19:37:37,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:37,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:37,403 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:37,403 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 286 flow. Second operand 4 states and 724 transitions. [2023-08-03 19:37:37,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 494 flow [2023-08-03 19:37:37,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 490 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:37:37,540 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 284 flow [2023-08-03 19:37:37,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2023-08-03 19:37:37,540 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2023-08-03 19:37:37,540 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 284 flow [2023-08-03 19:37:37,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:37,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:37,541 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:37,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 19:37:37,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:37,745 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:37:37,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:37,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1127582315, now seen corresponding path program 1 times [2023-08-03 19:37:37,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:37,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362477010] [2023-08-03 19:37:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:37,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:37:42,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:42,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362477010] [2023-08-03 19:37:42,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362477010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:42,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4841844] [2023-08-03 19:37:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:42,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:42,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:42,354 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:37:42,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 19:37:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:42,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-03 19:37:42,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-03 19:37:48,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:37:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:37:53,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4841844] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:37:53,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:37:53,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2023-08-03 19:37:53,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663178053] [2023-08-03 19:37:53,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:37:53,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-03 19:37:53,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:53,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-03 19:37:53,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-03 19:37:53,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 359 [2023-08-03 19:37:53,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 284 flow. Second operand has 16 states, 16 states have (on average 146.5625) internal successors, (2345), 16 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:53,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:53,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 359 [2023-08-03 19:37:53,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:01,449 INFO L124 PetriNetUnfolderBase]: 15094/24038 cut-off events. [2023-08-03 19:38:01,450 INFO L125 PetriNetUnfolderBase]: For 16832/16832 co-relation queries the response was YES. [2023-08-03 19:38:01,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60185 conditions, 24038 events. 15094/24038 cut-off events. For 16832/16832 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 163271 event pairs, 1393 based on Foata normal form. 2/23905 useless extension candidates. Maximal degree in co-relation 60098. Up to 6568 conditions per place. [2023-08-03 19:38:01,521 INFO L140 encePairwiseOnDemand]: 350/359 looper letters, 159 selfloop transitions, 14 changer transitions 93/272 dead transitions. [2023-08-03 19:38:01,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 272 transitions, 1823 flow [2023-08-03 19:38:01,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 19:38:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 19:38:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1790 transitions. [2023-08-03 19:38:01,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532793112180299 [2023-08-03 19:38:01,525 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1790 transitions. [2023-08-03 19:38:01,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1790 transitions. [2023-08-03 19:38:01,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:01,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1790 transitions. [2023-08-03 19:38:01,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 162.72727272727272) internal successors, (1790), 11 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:01,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 359.0) internal successors, (4308), 12 states have internal predecessors, (4308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:01,530 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 359.0) internal successors, (4308), 12 states have internal predecessors, (4308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:01,530 INFO L175 Difference]: Start difference. First operand has 82 places, 62 transitions, 284 flow. Second operand 11 states and 1790 transitions. [2023-08-03 19:38:01,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 272 transitions, 1823 flow [2023-08-03 19:38:01,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 272 transitions, 1773 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-03 19:38:01,773 INFO L231 Difference]: Finished difference. Result has 97 places, 75 transitions, 409 flow [2023-08-03 19:38:01,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=409, PETRI_PLACES=97, PETRI_TRANSITIONS=75} [2023-08-03 19:38:01,774 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2023-08-03 19:38:01,774 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 75 transitions, 409 flow [2023-08-03 19:38:01,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 146.5625) internal successors, (2345), 16 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:01,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:01,774 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:38:01,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-03 19:38:01,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 19:38:01,980 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:38:01,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:01,981 INFO L85 PathProgramCache]: Analyzing trace with hash 834656895, now seen corresponding path program 2 times [2023-08-03 19:38:01,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:01,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489610285] [2023-08-03 19:38:01,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:01,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:38:06,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:06,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489610285] [2023-08-03 19:38:06,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489610285] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:06,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28635101] [2023-08-03 19:38:06,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:38:06,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:06,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:06,150 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:38:06,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-03 19:38:06,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:38:06,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:38:06,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-03 19:38:06,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:38:10,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:38:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:38:15,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28635101] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:38:15,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:38:15,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 6] total 15 [2023-08-03 19:38:15,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100701417] [2023-08-03 19:38:15,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:38:15,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-03 19:38:15,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:15,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-03 19:38:15,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-08-03 19:38:15,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 359 [2023-08-03 19:38:15,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 75 transitions, 409 flow. Second operand has 16 states, 16 states have (on average 145.5625) internal successors, (2329), 16 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:15,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:15,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 359 [2023-08-03 19:38:15,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:23,043 INFO L124 PetriNetUnfolderBase]: 15274/25595 cut-off events. [2023-08-03 19:38:23,043 INFO L125 PetriNetUnfolderBase]: For 77409/77409 co-relation queries the response was YES. [2023-08-03 19:38:23,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97937 conditions, 25595 events. 15274/25595 cut-off events. For 77409/77409 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 189243 event pairs, 2405 based on Foata normal form. 1/25491 useless extension candidates. Maximal degree in co-relation 97896. Up to 10924 conditions per place. [2023-08-03 19:38:23,163 INFO L140 encePairwiseOnDemand]: 350/359 looper letters, 136 selfloop transitions, 10 changer transitions 74/226 dead transitions. [2023-08-03 19:38:23,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 226 transitions, 1684 flow [2023-08-03 19:38:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 19:38:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 19:38:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1463 transitions. [2023-08-03 19:38:23,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45280099040544725 [2023-08-03 19:38:23,167 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1463 transitions. [2023-08-03 19:38:23,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1463 transitions. [2023-08-03 19:38:23,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:23,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1463 transitions. [2023-08-03 19:38:23,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 162.55555555555554) internal successors, (1463), 9 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:23,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 359.0) internal successors, (3590), 10 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:23,171 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 359.0) internal successors, (3590), 10 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:23,171 INFO L175 Difference]: Start difference. First operand has 97 places, 75 transitions, 409 flow. Second operand 9 states and 1463 transitions. [2023-08-03 19:38:23,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 226 transitions, 1684 flow [2023-08-03 19:38:23,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 226 transitions, 1648 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-03 19:38:23,664 INFO L231 Difference]: Finished difference. Result has 102 places, 74 transitions, 438 flow [2023-08-03 19:38:23,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=438, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2023-08-03 19:38:23,665 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2023-08-03 19:38:23,665 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 438 flow [2023-08-03 19:38:23,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 145.5625) internal successors, (2329), 16 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:23,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:23,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:38:23,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-03 19:38:23,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-03 19:38:23,866 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:38:23,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:23,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1883281949, now seen corresponding path program 1 times [2023-08-03 19:38:23,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:23,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347471326] [2023-08-03 19:38:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:23,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:38:24,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:24,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347471326] [2023-08-03 19:38:24,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347471326] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:24,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494824583] [2023-08-03 19:38:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:24,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:24,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:24,798 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:38:24,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-03 19:38:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:25,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-03 19:38:25,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:38:30,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:38:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:38:32,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494824583] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:38:32,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:38:32,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 6] total 25 [2023-08-03 19:38:32,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327289992] [2023-08-03 19:38:32,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:38:32,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-03 19:38:32,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:32,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-03 19:38:32,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-08-03 19:38:32,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 359 [2023-08-03 19:38:32,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 74 transitions, 438 flow. Second operand has 25 states, 25 states have (on average 122.76) internal successors, (3069), 25 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:32,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:32,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 359 [2023-08-03 19:38:32,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:44,632 INFO L124 PetriNetUnfolderBase]: 17491/30282 cut-off events. [2023-08-03 19:38:44,632 INFO L125 PetriNetUnfolderBase]: For 110907/110907 co-relation queries the response was YES. [2023-08-03 19:38:44,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120949 conditions, 30282 events. 17491/30282 cut-off events. For 110907/110907 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 239858 event pairs, 2884 based on Foata normal form. 375/30575 useless extension candidates. Maximal degree in co-relation 120909. Up to 10592 conditions per place. [2023-08-03 19:38:44,799 INFO L140 encePairwiseOnDemand]: 337/359 looper letters, 222 selfloop transitions, 88 changer transitions 26/339 dead transitions. [2023-08-03 19:38:44,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 339 transitions, 2834 flow [2023-08-03 19:38:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-03 19:38:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-03 19:38:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3696 transitions. [2023-08-03 19:38:44,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3550091249639804 [2023-08-03 19:38:44,804 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3696 transitions. [2023-08-03 19:38:44,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3696 transitions. [2023-08-03 19:38:44,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:44,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3696 transitions. [2023-08-03 19:38:44,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 127.44827586206897) internal successors, (3696), 29 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:44,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 359.0) internal successors, (10770), 30 states have internal predecessors, (10770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:44,817 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 359.0) internal successors, (10770), 30 states have internal predecessors, (10770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:44,817 INFO L175 Difference]: Start difference. First operand has 102 places, 74 transitions, 438 flow. Second operand 29 states and 3696 transitions. [2023-08-03 19:38:44,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 339 transitions, 2834 flow [2023-08-03 19:38:45,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 339 transitions, 2660 flow, removed 66 selfloop flow, removed 6 redundant places. [2023-08-03 19:38:45,308 INFO L231 Difference]: Finished difference. Result has 135 places, 152 transitions, 1350 flow [2023-08-03 19:38:45,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1350, PETRI_PLACES=135, PETRI_TRANSITIONS=152} [2023-08-03 19:38:45,309 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2023-08-03 19:38:45,309 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 152 transitions, 1350 flow [2023-08-03 19:38:45,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 122.76) internal successors, (3069), 25 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:45,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:45,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:38:45,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-03 19:38:45,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:45,510 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:38:45,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1295273349, now seen corresponding path program 2 times [2023-08-03 19:38:45,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:45,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828936948] [2023-08-03 19:38:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:45,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:38:46,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:46,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828936948] [2023-08-03 19:38:46,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828936948] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:46,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316260314] [2023-08-03 19:38:46,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:38:46,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:46,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:46,344 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:38:46,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-03 19:38:46,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:38:46,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:38:46,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-03 19:38:46,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:39:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:39:06,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:39:12,706 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:39:12,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316260314] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:39:12,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:39:12,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 21 [2023-08-03 19:39:12,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201066621] [2023-08-03 19:39:12,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:39:12,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-03 19:39:12,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:39:12,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-03 19:39:12,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2023-08-03 19:39:13,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 359 [2023-08-03 19:39:13,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 152 transitions, 1350 flow. Second operand has 21 states, 21 states have (on average 127.57142857142857) internal successors, (2679), 21 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:13,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:39:13,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 359 [2023-08-03 19:39:13,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:39:29,442 INFO L124 PetriNetUnfolderBase]: 18604/33261 cut-off events. [2023-08-03 19:39:29,442 INFO L125 PetriNetUnfolderBase]: For 250391/250397 co-relation queries the response was YES. [2023-08-03 19:39:29,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172579 conditions, 33261 events. 18604/33261 cut-off events. For 250391/250397 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 275193 event pairs, 1833 based on Foata normal form. 69/33266 useless extension candidates. Maximal degree in co-relation 172528. Up to 14544 conditions per place. [2023-08-03 19:39:29,610 INFO L140 encePairwiseOnDemand]: 340/359 looper letters, 156 selfloop transitions, 68 changer transitions 322/554 dead transitions. [2023-08-03 19:39:29,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 554 transitions, 5920 flow [2023-08-03 19:39:29,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-03 19:39:29,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-03 19:39:29,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 6380 transitions. [2023-08-03 19:39:29,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36268546415780795 [2023-08-03 19:39:29,615 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 6380 transitions. [2023-08-03 19:39:29,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 6380 transitions. [2023-08-03 19:39:29,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:39:29,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 6380 transitions. [2023-08-03 19:39:29,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 130.20408163265307) internal successors, (6380), 49 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:29,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 359.0) internal successors, (17950), 50 states have internal predecessors, (17950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:29,633 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 359.0) internal successors, (17950), 50 states have internal predecessors, (17950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:29,634 INFO L175 Difference]: Start difference. First operand has 135 places, 152 transitions, 1350 flow. Second operand 49 states and 6380 transitions. [2023-08-03 19:39:29,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 554 transitions, 5920 flow [2023-08-03 19:39:31,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 554 transitions, 5705 flow, removed 69 selfloop flow, removed 10 redundant places. [2023-08-03 19:39:31,250 INFO L231 Difference]: Finished difference. Result has 184 places, 141 transitions, 1320 flow [2023-08-03 19:39:31,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1320, PETRI_PLACES=184, PETRI_TRANSITIONS=141} [2023-08-03 19:39:31,251 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2023-08-03 19:39:31,251 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 141 transitions, 1320 flow [2023-08-03 19:39:31,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 127.57142857142857) internal successors, (2679), 21 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:31,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:31,252 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:39:31,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-03 19:39:31,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:31,452 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:39:31,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:31,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1888679371, now seen corresponding path program 1 times [2023-08-03 19:39:31,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:31,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163095732] [2023-08-03 19:39:31,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:31,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:39:32,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:39:32,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163095732] [2023-08-03 19:39:32,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163095732] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:39:32,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544486321] [2023-08-03 19:39:32,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:32,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:32,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:39:32,288 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:39:32,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-03 19:39:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:32,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-03 19:39:32,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:39:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:39:36,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:39:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:39:38,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544486321] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-03 19:39:38,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-03 19:39:38,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 8] total 22 [2023-08-03 19:39:38,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552759355] [2023-08-03 19:39:38,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:39:38,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 19:39:38,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:39:38,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 19:39:38,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-08-03 19:39:38,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 359 [2023-08-03 19:39:38,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 141 transitions, 1320 flow. Second operand has 7 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:38,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:39:38,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 359 [2023-08-03 19:39:38,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:39:42,446 INFO L124 PetriNetUnfolderBase]: 7811/15011 cut-off events. [2023-08-03 19:39:42,446 INFO L125 PetriNetUnfolderBase]: For 208859/208880 co-relation queries the response was YES. [2023-08-03 19:39:42,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88602 conditions, 15011 events. 7811/15011 cut-off events. For 208859/208880 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 122496 event pairs, 1255 based on Foata normal form. 8/14972 useless extension candidates. Maximal degree in co-relation 88548. Up to 6830 conditions per place. [2023-08-03 19:39:42,523 INFO L140 encePairwiseOnDemand]: 350/359 looper letters, 128 selfloop transitions, 45 changer transitions 9/199 dead transitions. [2023-08-03 19:39:42,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 199 transitions, 2126 flow [2023-08-03 19:39:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:39:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:39:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1099 transitions. [2023-08-03 19:39:42,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4373259052924791 [2023-08-03 19:39:42,524 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1099 transitions. [2023-08-03 19:39:42,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1099 transitions. [2023-08-03 19:39:42,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:39:42,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1099 transitions. [2023-08-03 19:39:42,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 157.0) internal successors, (1099), 7 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:42,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 359.0) internal successors, (2872), 8 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:42,527 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 359.0) internal successors, (2872), 8 states have internal predecessors, (2872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:42,527 INFO L175 Difference]: Start difference. First operand has 184 places, 141 transitions, 1320 flow. Second operand 7 states and 1099 transitions. [2023-08-03 19:39:42,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 199 transitions, 2126 flow [2023-08-03 19:39:43,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 199 transitions, 1895 flow, removed 102 selfloop flow, removed 18 redundant places. [2023-08-03 19:39:43,697 INFO L231 Difference]: Finished difference. Result has 140 places, 139 transitions, 1287 flow [2023-08-03 19:39:43,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1287, PETRI_PLACES=140, PETRI_TRANSITIONS=139} [2023-08-03 19:39:43,697 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2023-08-03 19:39:43,697 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 139 transitions, 1287 flow [2023-08-03 19:39:43,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:43,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:43,698 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:39:43,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-03 19:39:43,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:43,902 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:39:43,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:43,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1352923801, now seen corresponding path program 1 times [2023-08-03 19:39:43,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:43,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775453056] [2023-08-03 19:39:43,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:43,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:39:44,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:39:44,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775453056] [2023-08-03 19:39:44,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775453056] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:39:44,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553707284] [2023-08-03 19:39:44,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:44,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:44,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:39:44,618 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:39:44,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-03 19:39:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:44,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-03 19:39:44,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:39:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-03 19:39:50,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:39:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:39:54,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553707284] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:39:54,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:39:54,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 5] total 23 [2023-08-03 19:39:54,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036054558] [2023-08-03 19:39:54,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:39:54,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-03 19:39:54,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:39:54,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-03 19:39:54,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2023-08-03 19:39:55,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 359 [2023-08-03 19:39:55,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 139 transitions, 1287 flow. Second operand has 23 states, 23 states have (on average 127.17391304347827) internal successors, (2925), 23 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:55,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:39:55,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 359 [2023-08-03 19:39:55,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:02,614 INFO L124 PetriNetUnfolderBase]: 7554/14724 cut-off events. [2023-08-03 19:40:02,614 INFO L125 PetriNetUnfolderBase]: For 179286/179297 co-relation queries the response was YES. [2023-08-03 19:40:02,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85454 conditions, 14724 events. 7554/14724 cut-off events. For 179286/179297 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 121717 event pairs, 1098 based on Foata normal form. 41/14672 useless extension candidates. Maximal degree in co-relation 85416. Up to 6073 conditions per place. [2023-08-03 19:40:02,670 INFO L140 encePairwiseOnDemand]: 337/359 looper letters, 0 selfloop transitions, 0 changer transitions 251/251 dead transitions. [2023-08-03 19:40:02,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 251 transitions, 2862 flow [2023-08-03 19:40:02,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-03 19:40:02,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-03 19:40:02,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3586 transitions. [2023-08-03 19:40:02,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567449263828094 [2023-08-03 19:40:02,673 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3586 transitions. [2023-08-03 19:40:02,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3586 transitions. [2023-08-03 19:40:02,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:02,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3586 transitions. [2023-08-03 19:40:02,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 128.07142857142858) internal successors, (3586), 28 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:02,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 359.0) internal successors, (10411), 29 states have internal predecessors, (10411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:02,680 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 359.0) internal successors, (10411), 29 states have internal predecessors, (10411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:02,681 INFO L175 Difference]: Start difference. First operand has 140 places, 139 transitions, 1287 flow. Second operand 28 states and 3586 transitions. [2023-08-03 19:40:02,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 251 transitions, 2862 flow [2023-08-03 19:40:03,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 251 transitions, 2703 flow, removed 40 selfloop flow, removed 5 redundant places. [2023-08-03 19:40:03,236 INFO L231 Difference]: Finished difference. Result has 160 places, 0 transitions, 0 flow [2023-08-03 19:40:03,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=0, PETRI_PLACES=160, PETRI_TRANSITIONS=0} [2023-08-03 19:40:03,237 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 106 predicate places. [2023-08-03 19:40:03,237 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 0 transitions, 0 flow [2023-08-03 19:40:03,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 127.17391304347827) internal successors, (2925), 23 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:03,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 19:40:03,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 19:40:03,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:40:03,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:40:03,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-03 19:40:03,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-03 19:40:03,441 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:03,442 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:40:03,442 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:40:03,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:40:03 BasicIcfg [2023-08-03 19:40:03,444 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:40:03,444 INFO L158 Benchmark]: Toolchain (without parser) took 265647.01ms. Allocated memory was 341.8MB in the beginning and 6.9GB in the end (delta: 6.5GB). Free memory was 294.3MB in the beginning and 5.1GB in the end (delta: -4.8GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-03 19:40:03,444 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 341.8MB. Free memory was 295.3MB in the beginning and 295.1MB in the end (delta: 174.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:40:03,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.90ms. Allocated memory is still 341.8MB. Free memory was 293.9MB in the beginning and 281.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 19:40:03,445 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.80ms. Allocated memory is still 341.8MB. Free memory was 281.6MB in the beginning and 278.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:40:03,445 INFO L158 Benchmark]: Boogie Preprocessor took 28.34ms. Allocated memory is still 341.8MB. Free memory was 278.5MB in the beginning and 276.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:40:03,445 INFO L158 Benchmark]: RCFGBuilder took 795.97ms. Allocated memory was 341.8MB in the beginning and 480.2MB in the end (delta: 138.4MB). Free memory was 276.1MB in the beginning and 419.2MB in the end (delta: -143.1MB). Peak memory consumption was 65.5MB. Max. memory is 16.0GB. [2023-08-03 19:40:03,445 INFO L158 Benchmark]: TraceAbstraction took 264611.07ms. Allocated memory was 480.2MB in the beginning and 6.9GB in the end (delta: 6.4GB). Free memory was 418.2MB in the beginning and 5.1GB in the end (delta: -4.7GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-03 19:40:03,446 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 341.8MB. Free memory was 295.3MB in the beginning and 295.1MB in the end (delta: 174.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 155.90ms. Allocated memory is still 341.8MB. Free memory was 293.9MB in the beginning and 281.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.80ms. Allocated memory is still 341.8MB. Free memory was 281.6MB in the beginning and 278.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.34ms. Allocated memory is still 341.8MB. Free memory was 278.5MB in the beginning and 276.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 795.97ms. Allocated memory was 341.8MB in the beginning and 480.2MB in the end (delta: 138.4MB). Free memory was 276.1MB in the beginning and 419.2MB in the end (delta: -143.1MB). Peak memory consumption was 65.5MB. Max. memory is 16.0GB. * TraceAbstraction took 264611.07ms. Allocated memory was 480.2MB in the beginning and 6.9GB in the end (delta: 6.4GB). Free memory was 418.2MB in the beginning and 5.1GB in the end (delta: -4.7GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.1s, 166 PlacesBefore, 39 PlacesAfterwards, 176 TransitionsBefore, 42 TransitionsAfterwards, 1368 CoEnabledTransitionPairs, 8 FixpointIterations, 75 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 7 ChoiceCompositions, 149 TotalNumberOfCompositions, 4949 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4237, independent: 4152, independent conditional: 0, independent unconditional: 4152, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 860, independent: 848, independent conditional: 0, independent unconditional: 848, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4237, independent: 3304, independent conditional: 0, independent unconditional: 3304, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 860, unknown conditional: 0, unknown unconditional: 860] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.9s, 184 PlacesBefore, 54 PlacesAfterwards, 197 TransitionsBefore, 60 TransitionsAfterwards, 3276 CoEnabledTransitionPairs, 7 FixpointIterations, 75 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 7 ChoiceCompositions, 152 TotalNumberOfCompositions, 13824 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10611, independent: 10477, independent conditional: 0, independent unconditional: 10477, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2037, independent: 2018, independent conditional: 0, independent unconditional: 2018, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10611, independent: 8459, independent conditional: 0, independent unconditional: 8459, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 2037, unknown conditional: 0, unknown unconditional: 2037] , Statistics on independence cache: Total cache size (in pairs): 199, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 101]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 182 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 194 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 256.1s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 152.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5304 SdHoareTripleChecker+Valid, 11.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4960 mSDsluCounter, 9447 SdHoareTripleChecker+Invalid, 10.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9037 mSDsCounter, 264 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13155 IncrementalHoareTripleChecker+Invalid, 13419 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 264 mSolverCounterUnsat, 410 mSDtfsCounter, 13155 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1659 GetRequests, 1375 SyntacticMatches, 16 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2208 ImplicationChecksByTransitivity, 19.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1350occurred in iteration=18, InterpolantAutomatonStates: 190, 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: 0.4s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 80.1s InterpolantComputationTime, 1606 NumberOfCodeBlocks, 1606 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 2165 ConstructedInterpolants, 0 QuantifiedInterpolants, 56553 SizeOfPredicates, 296 NumberOfNonLiveVariables, 4494 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 53 InterpolantComputations, 10 PerfectInterpolantSequences, 977/1113 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 19:40:03,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...