/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_thin002_rmo_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 01:19:59,272 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 01:19:59,349 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 01:19:59,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 01:19:59,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 01:19:59,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 01:19:59,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 01:19:59,387 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 01:19:59,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 01:19:59,391 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 01:19:59,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 01:19:59,393 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 01:19:59,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 01:19:59,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 01:19:59,395 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 01:19:59,395 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 01:19:59,396 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 01:19:59,396 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 01:19:59,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 01:19:59,396 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 01:19:59,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 01:19:59,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 01:19:59,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 01:19:59,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 01:19:59,397 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 01:19:59,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 01:19:59,398 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 01:19:59,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 01:19:59,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 01:19:59,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 01:19:59,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:19:59,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 01:19:59,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 01:19:59,400 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 01:19:59,400 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 01:19:59,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 01:19:59,400 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 01:19:59,401 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 01:19:59,401 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 01:19:59,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 01:19:59,401 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 01:19:59,401 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 01:19:59,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 01:19:59,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 01:19:59,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 01:19:59,631 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 01:19:59,631 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 01:19:59,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_thin002_rmo_bound2.i [2023-08-04 01:20:00,824 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 01:20:01,049 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 01:20:01,049 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_thin002_rmo_bound2.i [2023-08-04 01:20:01,072 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cadf1d448/f5b3c84e47b6425d84b7495b1cc1db0f/FLAG7961c72c7 [2023-08-04 01:20:01,090 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cadf1d448/f5b3c84e47b6425d84b7495b1cc1db0f [2023-08-04 01:20:01,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 01:20:01,096 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 01:20:01,099 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 01:20:01,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 01:20:01,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 01:20:01,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:20:01" (1/1) ... [2023-08-04 01:20:01,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3621a48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01, skipping insertion in model container [2023-08-04 01:20:01,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:20:01" (1/1) ... [2023-08-04 01:20:01,164 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 01:20:01,317 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_thin002_rmo_bound2.i[988,1001] [2023-08-04 01:20:01,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:20:01,474 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 01:20:01,488 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_thin002_rmo_bound2.i[988,1001] [2023-08-04 01:20:01,503 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 01:20:01,505 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 01:20:01,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:20:01,575 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 01:20:01,575 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 01:20:01,580 INFO L206 MainTranslator]: Completed translation [2023-08-04 01:20:01,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01 WrapperNode [2023-08-04 01:20:01,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 01:20:01,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 01:20:01,581 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 01:20:01,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 01:20:01,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01" (1/1) ... [2023-08-04 01:20:01,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01" (1/1) ... [2023-08-04 01:20:01,637 INFO L138 Inliner]: procedures = 177, calls = 80, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 187 [2023-08-04 01:20:01,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 01:20:01,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 01:20:01,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 01:20:01,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 01:20:01,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01" (1/1) ... [2023-08-04 01:20:01,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01" (1/1) ... [2023-08-04 01:20:01,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01" (1/1) ... [2023-08-04 01:20:01,652 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01" (1/1) ... [2023-08-04 01:20:01,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01" (1/1) ... [2023-08-04 01:20:01,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01" (1/1) ... [2023-08-04 01:20:01,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01" (1/1) ... [2023-08-04 01:20:01,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01" (1/1) ... [2023-08-04 01:20:01,671 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 01:20:01,672 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 01:20:01,672 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 01:20:01,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 01:20:01,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01" (1/1) ... [2023-08-04 01:20:01,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:20:01,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:20:01,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 01:20:01,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 01:20:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 01:20:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 01:20:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 01:20:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 01:20:01,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 01:20:01,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 01:20:01,767 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 01:20:01,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 01:20:01,767 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 01:20:01,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 01:20:01,767 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 01:20:01,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 01:20:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 01:20:01,768 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 01:20:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 01:20:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 01:20:01,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 01:20:01,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 01:20:01,769 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 01:20:01,897 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 01:20:01,898 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 01:20:02,285 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 01:20:02,444 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 01:20:02,445 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 01:20:02,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:20:02 BoogieIcfgContainer [2023-08-04 01:20:02,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 01:20:02,449 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 01:20:02,449 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 01:20:02,452 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 01:20:02,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 01:20:01" (1/3) ... [2023-08-04 01:20:02,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6693d67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:20:02, skipping insertion in model container [2023-08-04 01:20:02,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:20:01" (2/3) ... [2023-08-04 01:20:02,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6693d67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:20:02, skipping insertion in model container [2023-08-04 01:20:02,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:20:02" (3/3) ... [2023-08-04 01:20:02,455 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_thin002_rmo_bound2.i [2023-08-04 01:20:02,462 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 01:20:02,470 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 01:20:02,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 01:20:02,471 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 01:20:02,530 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 01:20:02,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 175 transitions, 370 flow [2023-08-04 01:20:02,823 INFO L124 PetriNetUnfolderBase]: 62/938 cut-off events. [2023-08-04 01:20:02,823 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:20:02,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 938 events. 62/938 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5625 event pairs, 0 based on Foata normal form. 0/830 useless extension candidates. Maximal degree in co-relation 567. Up to 32 conditions per place. [2023-08-04 01:20:02,832 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 175 transitions, 370 flow [2023-08-04 01:20:02,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 144 transitions, 308 flow [2023-08-04 01:20:02,844 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:20:02,858 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 144 transitions, 308 flow [2023-08-04 01:20:02,861 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 144 transitions, 308 flow [2023-08-04 01:20:02,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 144 transitions, 308 flow [2023-08-04 01:20:02,916 INFO L124 PetriNetUnfolderBase]: 14/442 cut-off events. [2023-08-04 01:20:02,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:20:02,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 442 events. 14/442 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1877 event pairs, 0 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 319. Up to 16 conditions per place. [2023-08-04 01:20:02,925 INFO L119 LiptonReduction]: Number of co-enabled transitions 2048 [2023-08-04 01:20:08,960 INFO L134 LiptonReduction]: Checked pairs total: 5512 [2023-08-04 01:20:08,961 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-04 01:20:08,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:20:08,978 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;@3a01df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:20:08,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:20:08,983 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:20:08,984 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2023-08-04 01:20:08,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:20:08,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:20:08,984 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 01:20:08,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:20:08,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:20:08,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1331372946, now seen corresponding path program 1 times [2023-08-04 01:20:08,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:20:08,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324515547] [2023-08-04 01:20:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:20:08,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:20:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:20:09,130 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:20:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:20:09,182 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:20:09,184 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:20:09,184 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 01:20:09,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 01:20:09,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 01:20:09,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 01:20:09,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 01:20:09,187 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 01:20:09,189 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 01:20:09,190 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 01:20:09,190 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 01:20:09,224 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 01:20:09,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 204 transitions, 456 flow [2023-08-04 01:20:09,836 INFO L124 PetriNetUnfolderBase]: 282/4264 cut-off events. [2023-08-04 01:20:09,837 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 01:20:09,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4553 conditions, 4264 events. 282/4264 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 40762 event pairs, 0 based on Foata normal form. 0/3781 useless extension candidates. Maximal degree in co-relation 3086. Up to 162 conditions per place. [2023-08-04 01:20:09,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 204 transitions, 456 flow [2023-08-04 01:20:09,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 173 transitions, 394 flow [2023-08-04 01:20:09,874 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:20:09,874 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 173 transitions, 394 flow [2023-08-04 01:20:09,874 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 173 transitions, 394 flow [2023-08-04 01:20:09,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 173 transitions, 394 flow [2023-08-04 01:20:10,103 INFO L124 PetriNetUnfolderBase]: 39/1753 cut-off events. [2023-08-04 01:20:10,103 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 01:20:10,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2042 conditions, 1753 events. 39/1753 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 13418 event pairs, 0 based on Foata normal form. 0/1675 useless extension candidates. Maximal degree in co-relation 1412. Up to 81 conditions per place. [2023-08-04 01:20:10,143 INFO L119 LiptonReduction]: Number of co-enabled transitions 5540 [2023-08-04 01:20:15,693 INFO L134 LiptonReduction]: Checked pairs total: 18460 [2023-08-04 01:20:15,693 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-04 01:20:15,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:20:15,696 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;@3a01df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:20:15,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:20:15,703 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:20:15,704 INFO L124 PetriNetUnfolderBase]: 0/85 cut-off events. [2023-08-04 01:20:15,704 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 01:20:15,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:20:15,704 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 01:20:15,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:20:15,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:20:15,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1348147671, now seen corresponding path program 1 times [2023-08-04 01:20:15,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:20:15,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183566238] [2023-08-04 01:20:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:20:15,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:20:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:20:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:20:15,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:20:15,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183566238] [2023-08-04 01:20:15,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183566238] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:20:15,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901217146] [2023-08-04 01:20:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:20:15,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:20:15,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:20:15,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:20:15,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 01:20:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:20:16,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:20:16,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:20:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:20:16,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:20:16,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901217146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:20:16,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:20:16,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 01:20:16,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854226947] [2023-08-04 01:20:16,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:20:16,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:20:16,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:20:16,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:20:16,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:20:16,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 330 [2023-08-04 01:20:16,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:20:16,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:20:16,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 330 [2023-08-04 01:20:16,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:21:09,135 INFO L124 PetriNetUnfolderBase]: 397275/531706 cut-off events. [2023-08-04 01:21:09,135 INFO L125 PetriNetUnfolderBase]: For 31216/31216 co-relation queries the response was YES. [2023-08-04 01:21:11,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1065102 conditions, 531706 events. 397275/531706 cut-off events. For 31216/31216 co-relation queries the response was YES. Maximal size of possible extension queue 12599. Compared 4048236 event pairs, 292799 based on Foata normal form. 0/525072 useless extension candidates. Maximal degree in co-relation 294140. Up to 494267 conditions per place. [2023-08-04 01:21:13,502 INFO L140 encePairwiseOnDemand]: 326/330 looper letters, 42 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-08-04 01:21:13,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 262 flow [2023-08-04 01:21:13,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:21:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:21:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 938 transitions. [2023-08-04 01:21:13,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684848484848485 [2023-08-04 01:21:13,520 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 938 transitions. [2023-08-04 01:21:13,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 938 transitions. [2023-08-04 01:21:13,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:21:13,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 938 transitions. [2023-08-04 01:21:13,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.6) internal successors, (938), 5 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:21:13,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:21:13,540 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:21:13,542 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 154 flow. Second operand 5 states and 938 transitions. [2023-08-04 01:21:13,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 262 flow [2023-08-04 01:21:13,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 62 transitions, 255 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-04 01:21:13,578 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 164 flow [2023-08-04 01:21:13,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-08-04 01:21:13,583 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 3 predicate places. [2023-08-04 01:21:13,583 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 164 flow [2023-08-04 01:21:13,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:21:13,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:21:13,584 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:21:13,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 01:21:13,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:21:13,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:21:13,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:21:13,791 INFO L85 PathProgramCache]: Analyzing trace with hash 693309784, now seen corresponding path program 1 times [2023-08-04 01:21:13,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:21:13,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142507039] [2023-08-04 01:21:13,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:21:13,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:21:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:21:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:21:13,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:21:13,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142507039] [2023-08-04 01:21:13,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142507039] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:21:13,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:21:13,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:21:13,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296029432] [2023-08-04 01:21:13,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:21:13,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:21:13,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:21:13,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:21:13,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:21:13,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 330 [2023-08-04 01:21:13,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:21:13,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:21:13,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 330 [2023-08-04 01:21:13,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:22:03,863 INFO L124 PetriNetUnfolderBase]: 374752/498848 cut-off events. [2023-08-04 01:22:03,863 INFO L125 PetriNetUnfolderBase]: For 25932/25932 co-relation queries the response was YES. [2023-08-04 01:22:06,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996368 conditions, 498848 events. 374752/498848 cut-off events. For 25932/25932 co-relation queries the response was YES. Maximal size of possible extension queue 12112. Compared 3705574 event pairs, 315048 based on Foata normal form. 1/492729 useless extension candidates. Maximal degree in co-relation 292312. Up to 464309 conditions per place. [2023-08-04 01:22:09,030 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 40 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-04 01:22:09,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 57 transitions, 251 flow [2023-08-04 01:22:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:22:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:22:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 579 transitions. [2023-08-04 01:22:09,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5848484848484848 [2023-08-04 01:22:09,040 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 579 transitions. [2023-08-04 01:22:09,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 579 transitions. [2023-08-04 01:22:09,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:22:09,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 579 transitions. [2023-08-04 01:22:09,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:22:09,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:22:09,046 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:22:09,046 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 164 flow. Second operand 3 states and 579 transitions. [2023-08-04 01:22:09,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 57 transitions, 251 flow [2023-08-04 01:22:09,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 57 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:22:09,070 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 162 flow [2023-08-04 01:22:09,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-08-04 01:22:09,084 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 4 predicate places. [2023-08-04 01:22:09,085 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 162 flow [2023-08-04 01:22:09,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:22:09,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:22:09,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:22:09,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 01:22:09,086 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:22:09,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:22:09,086 INFO L85 PathProgramCache]: Analyzing trace with hash -803372951, now seen corresponding path program 1 times [2023-08-04 01:22:09,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:22:09,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143933886] [2023-08-04 01:22:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:22:09,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:22:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:22:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:22:09,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:22:09,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143933886] [2023-08-04 01:22:09,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143933886] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:22:09,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33545386] [2023-08-04 01:22:09,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:22:09,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:22:09,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:22:09,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:22:09,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 01:22:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:22:09,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:22:09,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:22:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:22:09,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:22:09,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33545386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:22:09,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:22:09,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:22:09,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411315108] [2023-08-04 01:22:09,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:22:09,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:22:09,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:22:09,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:22:09,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:22:09,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 330 [2023-08-04 01:22:09,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 162 flow. Second operand has 3 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) [2023-08-04 01:22:09,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:22:09,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 330 [2023-08-04 01:22:09,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:22:54,205 INFO L124 PetriNetUnfolderBase]: 353378/468668 cut-off events. [2023-08-04 01:22:54,205 INFO L125 PetriNetUnfolderBase]: For 23416/23416 co-relation queries the response was YES. [2023-08-04 01:22:56,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936226 conditions, 468668 events. 353378/468668 cut-off events. For 23416/23416 co-relation queries the response was YES. Maximal size of possible extension queue 11822. Compared 3432992 event pairs, 298228 based on Foata normal form. 0/464264 useless extension candidates. Maximal degree in co-relation 936186. Up to 435958 conditions per place. [2023-08-04 01:22:58,911 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 44 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-08-04 01:22:58,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 62 transitions, 272 flow [2023-08-04 01:22:58,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:22:58,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:22:58,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2023-08-04 01:22:58,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2023-08-04 01:22:58,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2023-08-04 01:22:58,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2023-08-04 01:22:58,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:22:58,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2023-08-04 01:22:58,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:22:58,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:22:58,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:22:58,940 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 162 flow. Second operand 3 states and 583 transitions. [2023-08-04 01:22:58,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 62 transitions, 272 flow [2023-08-04 01:22:58,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 62 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:22:58,968 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 173 flow [2023-08-04 01:22:58,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2023-08-04 01:22:58,969 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 5 predicate places. [2023-08-04 01:22:58,969 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 173 flow [2023-08-04 01:22:58,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-04 01:22:58,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:22:58,970 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:22:58,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 01:22:59,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 01:22:59,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:22:59,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:22:59,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1098904857, now seen corresponding path program 1 times [2023-08-04 01:22:59,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:22:59,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941285726] [2023-08-04 01:22:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:22:59,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:22:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:22:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:22:59,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:22:59,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941285726] [2023-08-04 01:22:59,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941285726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:22:59,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246586656] [2023-08-04 01:22:59,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:22:59,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:22:59,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:22:59,282 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:22:59,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 01:22:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:22:59,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:22:59,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:22:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:22:59,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:22:59,479 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:22:59,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246586656] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:22:59,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:22:59,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 01:22:59,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599741878] [2023-08-04 01:22:59,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:22:59,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:22:59,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:22:59,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:22:59,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:22:59,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 330 [2023-08-04 01:22:59,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:22:59,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:22:59,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 330 [2023-08-04 01:22:59,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:23:32,978 INFO L124 PetriNetUnfolderBase]: 275374/363377 cut-off events. [2023-08-04 01:23:32,978 INFO L125 PetriNetUnfolderBase]: For 17787/17787 co-relation queries the response was YES. [2023-08-04 01:23:34,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724653 conditions, 363377 events. 275374/363377 cut-off events. For 17787/17787 co-relation queries the response was YES. Maximal size of possible extension queue 9434. Compared 2558732 event pairs, 192672 based on Foata normal form. 3/361157 useless extension candidates. Maximal degree in co-relation 255313. Up to 337384 conditions per place. [2023-08-04 01:23:35,863 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 43 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-08-04 01:23:35,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 61 transitions, 273 flow [2023-08-04 01:23:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:23:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:23:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 758 transitions. [2023-08-04 01:23:35,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5742424242424242 [2023-08-04 01:23:35,866 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 758 transitions. [2023-08-04 01:23:35,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 758 transitions. [2023-08-04 01:23:35,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:23:35,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 758 transitions. [2023-08-04 01:23:35,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:23:35,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:23:35,871 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:23:35,871 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 173 flow. Second operand 4 states and 758 transitions. [2023-08-04 01:23:35,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 61 transitions, 273 flow [2023-08-04 01:23:35,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 61 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:23:35,879 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 169 flow [2023-08-04 01:23:35,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2023-08-04 01:23:35,880 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 7 predicate places. [2023-08-04 01:23:35,880 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 169 flow [2023-08-04 01:23:35,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:23:35,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:23:35,881 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:23:35,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 01:23:36,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:23:36,087 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:23:36,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:23:36,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1312615865, now seen corresponding path program 1 times [2023-08-04 01:23:36,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:23:36,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590697427] [2023-08-04 01:23:36,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:23:36,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:23:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:23:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:23:36,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:23:36,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590697427] [2023-08-04 01:23:36,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590697427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:23:36,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251526096] [2023-08-04 01:23:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:23:36,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:23:36,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:23:36,183 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:23:36,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 01:23:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:23:36,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:23:36,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:23:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:23:36,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:23:36,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251526096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:23:36,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:23:36,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:23:36,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870346592] [2023-08-04 01:23:36,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:23:36,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:23:36,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:23:36,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:23:36,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:23:36,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 330 [2023-08-04 01:23:36,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:23:36,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:23:36,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 330 [2023-08-04 01:23:36,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:24:09,439 INFO L124 PetriNetUnfolderBase]: 275158/362905 cut-off events. [2023-08-04 01:24:09,439 INFO L125 PetriNetUnfolderBase]: For 17608/17608 co-relation queries the response was YES. [2023-08-04 01:24:10,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723843 conditions, 362905 events. 275158/362905 cut-off events. For 17608/17608 co-relation queries the response was YES. Maximal size of possible extension queue 9434. Compared 2553302 event pairs, 120442 based on Foata normal form. 81/360817 useless extension candidates. Maximal degree in co-relation 255023. Up to 336555 conditions per place. [2023-08-04 01:24:12,409 INFO L140 encePairwiseOnDemand]: 326/330 looper letters, 55 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2023-08-04 01:24:12,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 73 transitions, 325 flow [2023-08-04 01:24:12,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:24:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:24:12,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 949 transitions. [2023-08-04 01:24:12,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751515151515152 [2023-08-04 01:24:12,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 949 transitions. [2023-08-04 01:24:12,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 949 transitions. [2023-08-04 01:24:12,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:24:12,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 949 transitions. [2023-08-04 01:24:12,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.8) internal successors, (949), 5 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:24:12,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:24:12,418 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:24:12,419 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 169 flow. Second operand 5 states and 949 transitions. [2023-08-04 01:24:12,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 73 transitions, 325 flow [2023-08-04 01:24:12,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 318 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 01:24:12,430 INFO L231 Difference]: Finished difference. Result has 78 places, 54 transitions, 179 flow [2023-08-04 01:24:12,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=78, PETRI_TRANSITIONS=54} [2023-08-04 01:24:12,431 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2023-08-04 01:24:12,431 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 54 transitions, 179 flow [2023-08-04 01:24:12,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.6) internal successors, (903), 5 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:24:12,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:24:12,432 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:24:12,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 01:24:12,637 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 [2023-08-04 01:24:12,638 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:24:12,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:24:12,638 INFO L85 PathProgramCache]: Analyzing trace with hash 758433976, now seen corresponding path program 1 times [2023-08-04 01:24:12,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:24:12,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802507841] [2023-08-04 01:24:12,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:24:12,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:24:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:24:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 01:24:12,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:24:12,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802507841] [2023-08-04 01:24:12,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802507841] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:24:12,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132064181] [2023-08-04 01:24:12,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:24:12,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:24:12,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:24:12,700 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:24:12,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 01:24:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:24:12,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:24:12,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:24:12,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:24:12,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:24:12,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132064181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:24:12,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:24:12,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 01:24:12,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520337318] [2023-08-04 01:24:12,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:24:12,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:24:12,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:24:12,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:24:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:24:12,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 330 [2023-08-04 01:24:12,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 54 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:24:12,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:24:12,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 330 [2023-08-04 01:24:12,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:24:44,315 INFO L124 PetriNetUnfolderBase]: 259876/339136 cut-off events. [2023-08-04 01:24:44,315 INFO L125 PetriNetUnfolderBase]: For 16255/16255 co-relation queries the response was YES. [2023-08-04 01:24:45,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680829 conditions, 339136 events. 259876/339136 cut-off events. For 16255/16255 co-relation queries the response was YES. Maximal size of possible extension queue 9252. Compared 2320566 event pairs, 220726 based on Foata normal form. 0/334591 useless extension candidates. Maximal degree in co-relation 239702. Up to 315517 conditions per place. [2023-08-04 01:24:46,938 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 49 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-04 01:24:46,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 66 transitions, 307 flow [2023-08-04 01:24:46,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:24:46,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:24:46,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 587 transitions. [2023-08-04 01:24:46,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592929292929293 [2023-08-04 01:24:46,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 587 transitions. [2023-08-04 01:24:46,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 587 transitions. [2023-08-04 01:24:46,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:24:46,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 587 transitions. [2023-08-04 01:24:46,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:24:46,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:24:46,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:24:46,944 INFO L175 Difference]: Start difference. First operand has 78 places, 54 transitions, 179 flow. Second operand 3 states and 587 transitions. [2023-08-04 01:24:46,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 66 transitions, 307 flow [2023-08-04 01:24:46,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 66 transitions, 300 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-04 01:24:46,948 INFO L231 Difference]: Finished difference. Result has 79 places, 55 transitions, 187 flow [2023-08-04 01:24:46,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=79, PETRI_TRANSITIONS=55} [2023-08-04 01:24:46,949 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 9 predicate places. [2023-08-04 01:24:46,949 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 55 transitions, 187 flow [2023-08-04 01:24:46,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:24:46,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:24:46,950 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:24:46,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 01:24:47,154 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 [2023-08-04 01:24:47,154 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:24:47,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:24:47,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1879032193, now seen corresponding path program 1 times [2023-08-04 01:24:47,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:24:47,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808165601] [2023-08-04 01:24:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:24:47,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:24:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:24:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:24:47,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:24:47,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808165601] [2023-08-04 01:24:47,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808165601] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:24:47,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464343003] [2023-08-04 01:24:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:24:47,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:24:47,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:24:47,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:24:47,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 01:24:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:24:47,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:24:47,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:24:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:24:47,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:24:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 01:24:47,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464343003] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:24:47,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:24:47,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:24:47,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067535280] [2023-08-04 01:24:47,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:24:47,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:24:47,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:24:47,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:24:47,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:24:47,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 330 [2023-08-04 01:24:47,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 55 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:24:47,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:24:47,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 330 [2023-08-04 01:24:47,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:25:14,913 INFO L124 PetriNetUnfolderBase]: 202204/261871 cut-off events. [2023-08-04 01:25:14,914 INFO L125 PetriNetUnfolderBase]: For 14065/14065 co-relation queries the response was YES. [2023-08-04 01:25:16,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527794 conditions, 261871 events. 202204/261871 cut-off events. For 14065/14065 co-relation queries the response was YES. Maximal size of possible extension queue 7645. Compared 1716905 event pairs, 144526 based on Foata normal form. 27/259216 useless extension candidates. Maximal degree in co-relation 185510. Up to 244915 conditions per place. [2023-08-04 01:25:17,397 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 52 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-08-04 01:25:17,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 69 transitions, 320 flow [2023-08-04 01:25:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:25:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:25:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 766 transitions. [2023-08-04 01:25:17,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5803030303030303 [2023-08-04 01:25:17,400 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 766 transitions. [2023-08-04 01:25:17,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 766 transitions. [2023-08-04 01:25:17,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:25:17,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 766 transitions. [2023-08-04 01:25:17,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.5) internal successors, (766), 4 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:25:17,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:25:17,404 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:25:17,404 INFO L175 Difference]: Start difference. First operand has 79 places, 55 transitions, 187 flow. Second operand 4 states and 766 transitions. [2023-08-04 01:25:17,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 69 transitions, 320 flow [2023-08-04 01:25:17,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 69 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:25:17,409 INFO L231 Difference]: Finished difference. Result has 81 places, 54 transitions, 182 flow [2023-08-04 01:25:17,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=81, PETRI_TRANSITIONS=54} [2023-08-04 01:25:17,410 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 11 predicate places. [2023-08-04 01:25:17,410 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 54 transitions, 182 flow [2023-08-04 01:25:17,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:25:17,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:25:17,411 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:25:17,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 01:25:17,617 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 [2023-08-04 01:25:17,617 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:25:17,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:25:17,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1757784475, now seen corresponding path program 1 times [2023-08-04 01:25:17,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:25:17,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771155393] [2023-08-04 01:25:17,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:25:17,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:25:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:25:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:25:17,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:25:17,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771155393] [2023-08-04 01:25:17,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771155393] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:25:17,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904203843] [2023-08-04 01:25:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:25:17,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:25:17,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:25:17,710 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:25:17,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 01:25:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:25:17,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:25:17,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:25:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:25:17,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:25:17,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904203843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:25:17,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:25:17,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:25:17,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539056780] [2023-08-04 01:25:17,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:25:17,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:25:17,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:25:17,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:25:17,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:25:17,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 330 [2023-08-04 01:25:17,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 54 transitions, 182 flow. Second operand has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:25:17,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:25:17,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 330 [2023-08-04 01:25:17,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:25:40,841 INFO L124 PetriNetUnfolderBase]: 199288/257137 cut-off events. [2023-08-04 01:25:40,841 INFO L125 PetriNetUnfolderBase]: For 12043/12043 co-relation queries the response was YES. [2023-08-04 01:25:41,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519046 conditions, 257137 events. 199288/257137 cut-off events. For 12043/12043 co-relation queries the response was YES. Maximal size of possible extension queue 7618. Compared 1665302 event pairs, 38476 based on Foata normal form. 729/255913 useless extension candidates. Maximal degree in co-relation 182432. Up to 234171 conditions per place. [2023-08-04 01:25:43,027 INFO L140 encePairwiseOnDemand]: 326/330 looper letters, 68 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-08-04 01:25:43,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 388 flow [2023-08-04 01:25:43,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:25:43,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:25:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 961 transitions. [2023-08-04 01:25:43,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5824242424242424 [2023-08-04 01:25:43,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 961 transitions. [2023-08-04 01:25:43,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 961 transitions. [2023-08-04 01:25:43,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:25:43,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 961 transitions. [2023-08-04 01:25:43,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.2) internal successors, (961), 5 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:25:43,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:25:43,035 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:25:43,035 INFO L175 Difference]: Start difference. First operand has 81 places, 54 transitions, 182 flow. Second operand 5 states and 961 transitions. [2023-08-04 01:25:43,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 388 flow [2023-08-04 01:25:43,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 381 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 01:25:43,053 INFO L231 Difference]: Finished difference. Result has 82 places, 54 transitions, 192 flow [2023-08-04 01:25:43,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=82, PETRI_TRANSITIONS=54} [2023-08-04 01:25:43,054 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2023-08-04 01:25:43,054 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 54 transitions, 192 flow [2023-08-04 01:25:43,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.6) internal successors, (908), 5 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:25:43,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:25:43,054 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:25:43,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 01:25:43,257 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 [2023-08-04 01:25:43,258 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:25:43,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:25:43,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1204943141, now seen corresponding path program 1 times [2023-08-04 01:25:43,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:25:43,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901101763] [2023-08-04 01:25:43,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:25:43,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:25:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:25:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 01:25:43,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:25:43,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901101763] [2023-08-04 01:25:43,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901101763] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:25:43,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423426761] [2023-08-04 01:25:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:25:43,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:25:43,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:25:43,329 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:25:43,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 01:25:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:25:43,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:25:43,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:25:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 01:25:43,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:25:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 01:25:43,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423426761] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:25:43,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:25:43,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:25:43,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681636260] [2023-08-04 01:25:43,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:25:43,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:25:43,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:25:43,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:25:43,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:25:43,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 330 [2023-08-04 01:25:43,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 54 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 182.4) internal successors, (912), 5 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:25:43,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:25:43,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 330 [2023-08-04 01:25:43,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:26:02,587 INFO L124 PetriNetUnfolderBase]: 156601/200842 cut-off events. [2023-08-04 01:26:02,587 INFO L125 PetriNetUnfolderBase]: For 14155/14155 co-relation queries the response was YES. [2023-08-04 01:26:03,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408446 conditions, 200842 events. 156601/200842 cut-off events. For 14155/14155 co-relation queries the response was YES. Maximal size of possible extension queue 6504. Compared 1254674 event pairs, 110647 based on Foata normal form. 243/199618 useless extension candidates. Maximal degree in co-relation 143351. Up to 182380 conditions per place. [2023-08-04 01:26:04,239 INFO L140 encePairwiseOnDemand]: 327/330 looper letters, 60 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2023-08-04 01:26:04,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 358 flow [2023-08-04 01:26:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:26:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:26:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 774 transitions. [2023-08-04 01:26:04,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863636363636363 [2023-08-04 01:26:04,242 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 774 transitions. [2023-08-04 01:26:04,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 774 transitions. [2023-08-04 01:26:04,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:26:04,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 774 transitions. [2023-08-04 01:26:04,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:26:04,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:26:04,246 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:26:04,246 INFO L175 Difference]: Start difference. First operand has 82 places, 54 transitions, 192 flow. Second operand 4 states and 774 transitions. [2023-08-04 01:26:04,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 76 transitions, 358 flow [2023-08-04 01:26:04,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 353 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 01:26:04,259 INFO L231 Difference]: Finished difference. Result has 83 places, 53 transitions, 185 flow [2023-08-04 01:26:04,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=83, PETRI_TRANSITIONS=53} [2023-08-04 01:26:04,262 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 13 predicate places. [2023-08-04 01:26:04,262 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 53 transitions, 185 flow [2023-08-04 01:26:04,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 182.4) internal successors, (912), 5 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:26:04,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:26:04,263 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:26:04,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 01:26:04,469 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 [2023-08-04 01:26:04,470 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 01:26:04,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:26:04,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1645419043, now seen corresponding path program 1 times [2023-08-04 01:26:04,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:26:04,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155511779] [2023-08-04 01:26:04,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:26:04,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:26:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:26:04,549 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 01:26:04,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:26:04,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155511779] [2023-08-04 01:26:04,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155511779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:26:04,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:26:04,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 01:26:04,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193696117] [2023-08-04 01:26:04,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:26:04,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 01:26:04,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:26:04,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 01:26:04,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 01:26:04,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 330 [2023-08-04 01:26:04,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 53 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:26:04,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:26:04,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 330 [2023-08-04 01:26:04,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:26:15,439 INFO L124 PetriNetUnfolderBase]: 92449/121786 cut-off events. [2023-08-04 01:26:15,439 INFO L125 PetriNetUnfolderBase]: For 11563/11563 co-relation queries the response was YES. [2023-08-04 01:26:15,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251630 conditions, 121786 events. 92449/121786 cut-off events. For 11563/11563 co-relation queries the response was YES. Maximal size of possible extension queue 4020. Compared 761653 event pairs, 8614 based on Foata normal form. 11664/133441 useless extension candidates. Maximal degree in co-relation 102899. Up to 83835 conditions per place. [2023-08-04 01:26:16,037 INFO L140 encePairwiseOnDemand]: 328/330 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2023-08-04 01:26:16,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 79 transitions, 369 flow [2023-08-04 01:26:16,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:26:16,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:26:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 781 transitions. [2023-08-04 01:26:16,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2023-08-04 01:26:16,039 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 781 transitions. [2023-08-04 01:26:16,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 781 transitions. [2023-08-04 01:26:16,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:26:16,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 781 transitions. [2023-08-04 01:26:16,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 195.25) internal successors, (781), 4 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:26:16,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:26:16,043 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:26:16,043 INFO L175 Difference]: Start difference. First operand has 83 places, 53 transitions, 185 flow. Second operand 4 states and 781 transitions. [2023-08-04 01:26:16,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 79 transitions, 369 flow [2023-08-04 01:26:17,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 362 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 01:26:17,846 INFO L231 Difference]: Finished difference. Result has 81 places, 0 transitions, 0 flow [2023-08-04 01:26:17,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=330, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=81, PETRI_TRANSITIONS=0} [2023-08-04 01:26:17,847 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 11 predicate places. [2023-08-04 01:26:17,848 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 0 transitions, 0 flow [2023-08-04 01:26:17,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:26:17,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 01:26:17,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 01:26:17,848 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 01:26:17,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 01:26:17,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-04 01:26:17,849 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:26:17,849 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 01:26:17,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 204 transitions, 456 flow [2023-08-04 01:26:18,180 INFO L124 PetriNetUnfolderBase]: 282/4264 cut-off events. [2023-08-04 01:26:18,180 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 01:26:18,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4553 conditions, 4264 events. 282/4264 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 40762 event pairs, 0 based on Foata normal form. 0/3781 useless extension candidates. Maximal degree in co-relation 3086. Up to 162 conditions per place. [2023-08-04 01:26:18,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 204 transitions, 456 flow [2023-08-04 01:26:18,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 186 transitions, 404 flow [2023-08-04 01:26:18,206 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:26:18,206 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 186 transitions, 404 flow [2023-08-04 01:26:18,206 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 186 transitions, 404 flow [2023-08-04 01:26:18,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 186 transitions, 404 flow [2023-08-04 01:26:18,477 INFO L124 PetriNetUnfolderBase]: 201/3090 cut-off events. [2023-08-04 01:26:18,477 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-08-04 01:26:18,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3299 conditions, 3090 events. 201/3090 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 27294 event pairs, 0 based on Foata normal form. 0/2769 useless extension candidates. Maximal degree in co-relation 2291. Up to 162 conditions per place. [2023-08-04 01:26:18,528 INFO L119 LiptonReduction]: Number of co-enabled transitions 6996 [2023-08-04 01:26:24,776 INFO L134 LiptonReduction]: Checked pairs total: 22104 [2023-08-04 01:26:24,776 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-04 01:26:24,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 01:26:24,778 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;@3a01df3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:26:24,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 01:26:24,781 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:26:24,781 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2023-08-04 01:26:24,782 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 01:26:24,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:26:24,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:26:24,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 01:26:24,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:26:24,782 INFO L85 PathProgramCache]: Analyzing trace with hash -61852375, now seen corresponding path program 1 times [2023-08-04 01:26:24,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:26:24,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870325557] [2023-08-04 01:26:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:26:24,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:26:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:26:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:26:24,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:26:24,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870325557] [2023-08-04 01:26:24,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870325557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:26:24,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:26:24,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:26:24,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95696002] [2023-08-04 01:26:24,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:26:24,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:26:24,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:26:24,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:26:24,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:26:24,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 343 [2023-08-04 01:26:24,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:26:24,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:26:24,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 343 [2023-08-04 01:26:24,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand