/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix021.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:47:15,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:47:15,482 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:47:15,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:47:15,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:47:15,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:47:15,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:47:15,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:47:15,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:47:15,521 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:47:15,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:47:15,522 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:47:15,522 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:47:15,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:47:15,523 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:47:15,524 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:47:15,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:47:15,524 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:47:15,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:47:15,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:47:15,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:47:15,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:47:15,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:47:15,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:47:15,526 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:47:15,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:47:15,526 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:47:15,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:47:15,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:47:15,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:47:15,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:47:15,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:47:15,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:47:15,528 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:47:15,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:47:15,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:47:15,528 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:47:15,528 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:47:15,529 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:47:15,529 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:47:15,529 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:47:15,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:47:15,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:47:15,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:47:15,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:47:15,736 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:47:15,737 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:47:15,738 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix021.opt_bound2.i [2023-08-04 05:47:16,872 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:47:17,080 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:47:17,080 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix021.opt_bound2.i [2023-08-04 05:47:17,093 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcaf9fe8c/0aa775963c294cefabe7c66881acc358/FLAGa8dfd9924 [2023-08-04 05:47:17,105 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcaf9fe8c/0aa775963c294cefabe7c66881acc358 [2023-08-04 05:47:17,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:47:17,108 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:47:17,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:47:17,109 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:47:17,112 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:47:17,113 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:47:17" (1/1) ... [2023-08-04 05:47:17,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71318e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17, skipping insertion in model container [2023-08-04 05:47:17,114 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:47:17" (1/1) ... [2023-08-04 05:47:17,154 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:47:17,258 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_mix021.opt_bound2.i[944,957] [2023-08-04 05:47:17,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:47:17,429 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:47:17,438 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_mix021.opt_bound2.i[944,957] [2023-08-04 05:47:17,445 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:47:17,446 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:47:17,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:47:17,491 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:47:17,492 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:47:17,497 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:47:17,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17 WrapperNode [2023-08-04 05:47:17,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:47:17,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:47:17,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:47:17,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:47:17,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17" (1/1) ... [2023-08-04 05:47:17,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17" (1/1) ... [2023-08-04 05:47:17,539 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 196 [2023-08-04 05:47:17,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:47:17,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:47:17,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:47:17,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:47:17,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17" (1/1) ... [2023-08-04 05:47:17,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17" (1/1) ... [2023-08-04 05:47:17,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17" (1/1) ... [2023-08-04 05:47:17,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17" (1/1) ... [2023-08-04 05:47:17,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17" (1/1) ... [2023-08-04 05:47:17,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17" (1/1) ... [2023-08-04 05:47:17,565 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17" (1/1) ... [2023-08-04 05:47:17,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17" (1/1) ... [2023-08-04 05:47:17,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:47:17,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:47:17,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:47:17,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:47:17,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17" (1/1) ... [2023-08-04 05:47:17,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:47:17,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:47:17,614 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 05:47:17,615 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 05:47:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:47:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:47:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:47:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:47:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:47:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:47:17,639 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:47:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:47:17,640 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:47:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:47:17,640 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:47:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:47:17,640 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:47:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:47:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:47:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:47:17,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:47:17,641 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 05:47:17,750 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:47:17,751 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:47:18,094 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:47:18,222 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:47:18,222 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:47:18,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:47:18 BoogieIcfgContainer [2023-08-04 05:47:18,225 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:47:18,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:47:18,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:47:18,230 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:47:18,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:47:17" (1/3) ... [2023-08-04 05:47:18,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a443f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:47:18, skipping insertion in model container [2023-08-04 05:47:18,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:17" (2/3) ... [2023-08-04 05:47:18,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a443f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:47:18, skipping insertion in model container [2023-08-04 05:47:18,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:47:18" (3/3) ... [2023-08-04 05:47:18,233 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix021.opt_bound2.i [2023-08-04 05:47:18,240 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:47:18,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:47:18,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:47:18,248 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:47:18,293 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:47:18,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 330 flow [2023-08-04 05:47:18,513 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-04 05:47:18,513 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:47:18,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5773 event pairs, 0 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 545. Up to 32 conditions per place. [2023-08-04 05:47:18,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 155 transitions, 330 flow [2023-08-04 05:47:18,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 152 transitions, 318 flow [2023-08-04 05:47:18,531 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:47:18,551 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 152 transitions, 318 flow [2023-08-04 05:47:18,554 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 152 transitions, 318 flow [2023-08-04 05:47:18,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 152 transitions, 318 flow [2023-08-04 05:47:18,635 INFO L124 PetriNetUnfolderBase]: 62/925 cut-off events. [2023-08-04 05:47:18,635 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:47:18,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 925 events. 62/925 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5709 event pairs, 0 based on Foata normal form. 0/809 useless extension candidates. Maximal degree in co-relation 531. Up to 32 conditions per place. [2023-08-04 05:47:18,649 INFO L119 LiptonReduction]: Number of co-enabled transitions 3762 [2023-08-04 05:47:22,012 INFO L134 LiptonReduction]: Checked pairs total: 8591 [2023-08-04 05:47:22,013 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-04 05:47:22,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:47:22,026 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;@67e3ed8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:47:22,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:47:22,030 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:47:22,030 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2023-08-04 05:47:22,030 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:47:22,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:47:22,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:47:22,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:47:22,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:47:22,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1784071737, now seen corresponding path program 1 times [2023-08-04 05:47:22,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:47:22,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001145100] [2023-08-04 05:47:22,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:47:22,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:47:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:47:22,222 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 05:47:22,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:47:22,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001145100] [2023-08-04 05:47:22,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001145100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:47:22,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:47:22,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:47:22,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465395517] [2023-08-04 05:47:22,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:47:22,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:47:22,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:47:22,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:47:22,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:47:22,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 285 [2023-08-04 05:47:22,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 05:47:22,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:47:22,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 285 [2023-08-04 05:47:22,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:47:23,137 INFO L124 PetriNetUnfolderBase]: 7194/10758 cut-off events. [2023-08-04 05:47:23,137 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-08-04 05:47:23,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21310 conditions, 10758 events. 7194/10758 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 66331 event pairs, 6164 based on Foata normal form. 0/9327 useless extension candidates. Maximal degree in co-relation 21296. Up to 10282 conditions per place. [2023-08-04 05:47:23,177 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 32 selfloop transitions, 2 changer transitions 1/39 dead transitions. [2023-08-04 05:47:23,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 162 flow [2023-08-04 05:47:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:47:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:47:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-08-04 05:47:23,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134502923976608 [2023-08-04 05:47:23,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-08-04 05:47:23,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-08-04 05:47:23,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:47:23,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-08-04 05:47:23,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states 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 05:47:23,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 05:47:23,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 05:47:23,197 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 88 flow. Second operand 3 states and 439 transitions. [2023-08-04 05:47:23,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 162 flow [2023-08-04 05:47:23,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:47:23,200 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 94 flow [2023-08-04 05:47:23,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-04 05:47:23,204 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2023-08-04 05:47:23,204 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 94 flow [2023-08-04 05:47:23,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 05:47:23,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:47:23,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:47:23,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:47:23,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:47:23,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:47:23,205 INFO L85 PathProgramCache]: Analyzing trace with hash -551574816, now seen corresponding path program 1 times [2023-08-04 05:47:23,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:47:23,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685300414] [2023-08-04 05:47:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:47:23,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:47:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:47:23,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:47:23,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:47:23,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685300414] [2023-08-04 05:47:23,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685300414] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:47:23,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878443076] [2023-08-04 05:47:23,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:47:23,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:47:23,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:47:23,288 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 05:47:23,294 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 05:47:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:47:23,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:47:23,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:47:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 05:47:23,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:47:23,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878443076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:47:23,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:47:23,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:47:23,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292786608] [2023-08-04 05:47:23,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:47:23,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:47:23,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:47:23,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:47:23,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:47:23,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 285 [2023-08-04 05:47:23,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 05:47:23,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:47:23,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 285 [2023-08-04 05:47:23,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:47:24,024 INFO L124 PetriNetUnfolderBase]: 5786/8455 cut-off events. [2023-08-04 05:47:24,025 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-04 05:47:24,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16786 conditions, 8455 events. 5786/8455 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 49311 event pairs, 4240 based on Foata normal form. 0/7393 useless extension candidates. Maximal degree in co-relation 16769. Up to 8092 conditions per place. [2023-08-04 05:47:24,076 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 34 selfloop transitions, 2 changer transitions 1/41 dead transitions. [2023-08-04 05:47:24,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 178 flow [2023-08-04 05:47:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:47:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:47:24,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-04 05:47:24,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146198830409356 [2023-08-04 05:47:24,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-04 05:47:24,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-04 05:47:24,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:47:24,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-04 05:47:24,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 05:47:24,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 05:47:24,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 05:47:24,125 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 94 flow. Second operand 3 states and 440 transitions. [2023-08-04 05:47:24,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 178 flow [2023-08-04 05:47:24,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:47:24,127 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 98 flow [2023-08-04 05:47:24,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-08-04 05:47:24,127 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-08-04 05:47:24,127 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 98 flow [2023-08-04 05:47:24,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 05:47:24,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:47:24,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:47:24,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 05:47:24,332 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 05:47:24,332 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:47:24,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:47:24,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1421753715, now seen corresponding path program 1 times [2023-08-04 05:47:24,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:47:24,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744989941] [2023-08-04 05:47:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:47:24,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:47:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:47:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 05:47:24,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:47:24,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744989941] [2023-08-04 05:47:24,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744989941] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:47:24,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947060909] [2023-08-04 05:47:24,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:47:24,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:47:24,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:47:24,410 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 05:47:24,428 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 05:47:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:47:24,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:47:24,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:47:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:47:24,492 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:47:24,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947060909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:47:24,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:47:24,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:47:24,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671889271] [2023-08-04 05:47:24,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:47:24,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:47:24,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:47:24,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:47:24,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:47:24,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 285 [2023-08-04 05:47:24,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states 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 05:47:24,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:47:24,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 285 [2023-08-04 05:47:24,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:47:25,092 INFO L124 PetriNetUnfolderBase]: 4940/7204 cut-off events. [2023-08-04 05:47:25,093 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-04 05:47:25,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14293 conditions, 7204 events. 4940/7204 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 40349 event pairs, 3518 based on Foata normal form. 0/6408 useless extension candidates. Maximal degree in co-relation 14276. Up to 6713 conditions per place. [2023-08-04 05:47:25,122 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 37 selfloop transitions, 2 changer transitions 1/44 dead transitions. [2023-08-04 05:47:25,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 194 flow [2023-08-04 05:47:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:47:25,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:47:25,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-08-04 05:47:25,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181286549707602 [2023-08-04 05:47:25,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-08-04 05:47:25,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-08-04 05:47:25,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:47:25,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-08-04 05:47:25,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 05:47:25,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 05:47:25,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states 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 05:47:25,128 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 98 flow. Second operand 3 states and 443 transitions. [2023-08-04 05:47:25,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 194 flow [2023-08-04 05:47:25,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:47:25,130 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 102 flow [2023-08-04 05:47:25,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-08-04 05:47:25,131 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-08-04 05:47:25,131 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 102 flow [2023-08-04 05:47:25,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states 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 05:47:25,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:47:25,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:47:25,153 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 05:47:25,340 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,SelfDestructingSolverStorable2 [2023-08-04 05:47:25,340 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:47:25,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:47:25,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1760533478, now seen corresponding path program 1 times [2023-08-04 05:47:25,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:47:25,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471568130] [2023-08-04 05:47:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:47:25,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:47:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:47:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:47:25,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:47:25,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471568130] [2023-08-04 05:47:25,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471568130] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:47:25,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017846674] [2023-08-04 05:47:25,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:47:25,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:47:25,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:47:25,419 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 05:47:25,421 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 05:47:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:47:25,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:47:25,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:47:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:47:25,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:47:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:47:25,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017846674] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:47:25,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:47:25,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-04 05:47:25,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109196729] [2023-08-04 05:47:25,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:47:25,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 05:47:25,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:47:25,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 05:47:25,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 05:47:25,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 285 [2023-08-04 05:47:25,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:47:25,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:47:25,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 285 [2023-08-04 05:47:25,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:47:25,588 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 05:47:25,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:47:25,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 16 events. 4/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 05:47:25,590 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 05:47:25,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 10 transitions, 43 flow [2023-08-04 05:47:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:47:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:47:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 542 transitions. [2023-08-04 05:47:25,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47543859649122805 [2023-08-04 05:47:25,592 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 542 transitions. [2023-08-04 05:47:25,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 542 transitions. [2023-08-04 05:47:25,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:47:25,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 542 transitions. [2023-08-04 05:47:25,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states 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 05:47:25,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 05:47:25,596 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 05:47:25,596 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 102 flow. Second operand 4 states and 542 transitions. [2023-08-04 05:47:25,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 10 transitions, 43 flow [2023-08-04 05:47:25,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:47:25,597 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-04 05:47:25,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-04 05:47:25,598 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -26 predicate places. [2023-08-04 05:47:25,599 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-04 05:47:25,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:47:25,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:47:25,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:47:25,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:47:25,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 05:47:25,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:47:25,806 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 05:47:25,808 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:47:25,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 330 flow [2023-08-04 05:47:25,868 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-04 05:47:25,868 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:47:25,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5773 event pairs, 0 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 545. Up to 32 conditions per place. [2023-08-04 05:47:25,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 155 transitions, 330 flow [2023-08-04 05:47:25,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 124 transitions, 268 flow [2023-08-04 05:47:25,871 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:47:25,871 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 124 transitions, 268 flow [2023-08-04 05:47:25,871 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 124 transitions, 268 flow [2023-08-04 05:47:25,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 124 transitions, 268 flow [2023-08-04 05:47:25,896 INFO L124 PetriNetUnfolderBase]: 14/436 cut-off events. [2023-08-04 05:47:25,896 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:47:25,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 436 events. 14/436 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2013 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 297. Up to 16 conditions per place. [2023-08-04 05:47:25,900 INFO L119 LiptonReduction]: Number of co-enabled transitions 2160 [2023-08-04 05:47:28,478 INFO L134 LiptonReduction]: Checked pairs total: 5190 [2023-08-04 05:47:28,478 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-04 05:47:28,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:47:28,481 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;@67e3ed8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:47:28,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:47:28,483 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:47:28,483 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 05:47:28,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:47:28,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:47:28,484 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:47:28,484 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 05:47:28,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:47:28,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1124795218, now seen corresponding path program 1 times [2023-08-04 05:47:28,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:47:28,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038816945] [2023-08-04 05:47:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:47:28,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:47:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:47:28,501 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:47:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:47:28,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:47:28,524 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:47:28,524 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:47:28,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:47:28,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:47:28,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:47:28,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 05:47:28,531 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:47:28,531 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:47:28,532 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:47:28,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:47:28,553 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:47:28,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 186 transitions, 420 flow [2023-08-04 05:47:28,871 INFO L124 PetriNetUnfolderBase]: 282/4350 cut-off events. [2023-08-04 05:47:28,871 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:47:28,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4639 conditions, 4350 events. 282/4350 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42337 event pairs, 0 based on Foata normal form. 0/3813 useless extension candidates. Maximal degree in co-relation 3118. Up to 162 conditions per place. [2023-08-04 05:47:28,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 186 transitions, 420 flow [2023-08-04 05:47:28,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 183 transitions, 402 flow [2023-08-04 05:47:28,893 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:47:28,893 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 183 transitions, 402 flow [2023-08-04 05:47:28,893 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 183 transitions, 402 flow [2023-08-04 05:47:28,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 183 transitions, 402 flow [2023-08-04 05:47:29,221 INFO L124 PetriNetUnfolderBase]: 282/4337 cut-off events. [2023-08-04 05:47:29,221 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-04 05:47:29,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4600 conditions, 4337 events. 282/4337 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42159 event pairs, 0 based on Foata normal form. 0/3800 useless extension candidates. Maximal degree in co-relation 3097. Up to 162 conditions per place. [2023-08-04 05:47:29,307 INFO L119 LiptonReduction]: Number of co-enabled transitions 9180 [2023-08-04 05:47:32,430 INFO L134 LiptonReduction]: Checked pairs total: 23236 [2023-08-04 05:47:32,430 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-04 05:47:32,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:47:32,431 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;@67e3ed8b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:47:32,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:47:32,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:47:32,434 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2023-08-04 05:47:32,434 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 05:47:32,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:47:32,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:47:32,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:47:32,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:47:32,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1615688357, now seen corresponding path program 1 times [2023-08-04 05:47:32,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:47:32,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549744304] [2023-08-04 05:47:32,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:47:32,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:47:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:47:32,460 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 05:47:32,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:47:32,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549744304] [2023-08-04 05:47:32,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549744304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:47:32,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:47:32,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:47:32,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702221616] [2023-08-04 05:47:32,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:47:32,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:47:32,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:47:32,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:47:32,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:47:32,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 327 [2023-08-04 05:47:32,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 05:47:32,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:47:32,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 327 [2023-08-04 05:47:32,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand