/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_mix046.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:11:50,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:11:51,018 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:11:51,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:11:51,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:11:51,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:11:51,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:11:51,053 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:11:51,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:11:51,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:11:51,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:11:51,060 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:11:51,061 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:11:51,061 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:11:51,061 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:11:51,062 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:11:51,062 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:11:51,062 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:11:51,062 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:11:51,062 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:11:51,063 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:11:51,063 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:11:51,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:11:51,065 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:11:51,065 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:11:51,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:11:51,066 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:11:51,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:11:51,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:11:51,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:11:51,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:11:51,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:11:51,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:11:51,068 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:11:51,068 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:11:51,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:11:51,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:11:51,069 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:11:51,069 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:11:51,069 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:11:51,069 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:11:51,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:11:51,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:11:51,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:11:51,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:11:51,294 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:11:51,295 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:11:51,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix046.opt_bound2.i [2023-08-04 06:11:52,606 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:11:52,867 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:11:52,868 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix046.opt_bound2.i [2023-08-04 06:11:52,885 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2462dc29/d2c11c63286448e1a5963eff0017c5bb/FLAGbd5a93d8b [2023-08-04 06:11:52,897 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2462dc29/d2c11c63286448e1a5963eff0017c5bb [2023-08-04 06:11:52,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:11:52,901 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:11:52,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:11:52,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:11:52,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:11:52,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:11:52" (1/1) ... [2023-08-04 06:11:52,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4c7900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:52, skipping insertion in model container [2023-08-04 06:11:52,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:11:52" (1/1) ... [2023-08-04 06:11:52,970 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:11:53,121 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_mix046.opt_bound2.i[944,957] [2023-08-04 06:11:53,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:11:53,373 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:11:53,386 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_mix046.opt_bound2.i[944,957] [2023-08-04 06:11:53,406 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:11:53,408 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:11:53,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:11:53,492 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:11:53,492 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:11:53,498 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:11:53,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:53 WrapperNode [2023-08-04 06:11:53,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:11:53,500 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:11:53,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:11:53,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:11:53,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:53" (1/1) ... [2023-08-04 06:11:53,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:53" (1/1) ... [2023-08-04 06:11:53,569 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 200 [2023-08-04 06:11:53,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:11:53,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:11:53,570 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:11:53,570 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:11:53,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:53" (1/1) ... [2023-08-04 06:11:53,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:53" (1/1) ... [2023-08-04 06:11:53,586 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:53" (1/1) ... [2023-08-04 06:11:53,586 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:53" (1/1) ... [2023-08-04 06:11:53,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:53" (1/1) ... [2023-08-04 06:11:53,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:53" (1/1) ... [2023-08-04 06:11:53,616 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:53" (1/1) ... [2023-08-04 06:11:53,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:53" (1/1) ... [2023-08-04 06:11:53,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:11:53,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:11:53,626 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:11:53,626 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:11:53,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:53" (1/1) ... [2023-08-04 06:11:53,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:11:53,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:11:53,658 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 06:11:53,677 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 06:11:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:11:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:11:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:11:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:11:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:11:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:11:53,692 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:11:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:11:53,692 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:11:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:11:53,693 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:11:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 06:11:53,693 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 06:11:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:11:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:11:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:11:53,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:11:53,695 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 06:11:53,825 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:11:53,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:11:54,095 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:11:54,192 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:11:54,192 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 06:11:54,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:11:54 BoogieIcfgContainer [2023-08-04 06:11:54,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:11:54,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:11:54,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:11:54,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:11:54,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:11:52" (1/3) ... [2023-08-04 06:11:54,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2870f2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:11:54, skipping insertion in model container [2023-08-04 06:11:54,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:53" (2/3) ... [2023-08-04 06:11:54,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2870f2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:11:54, skipping insertion in model container [2023-08-04 06:11:54,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:11:54" (3/3) ... [2023-08-04 06:11:54,202 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix046.opt_bound2.i [2023-08-04 06:11:54,209 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:11:54,215 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:11:54,215 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:11:54,216 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:11:54,264 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:11:54,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 06:11:54,534 INFO L124 PetriNetUnfolderBase]: 62/945 cut-off events. [2023-08-04 06:11:54,535 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:11:54,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 945 events. 62/945 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5900 event pairs, 0 based on Foata normal form. 0/829 useless extension candidates. Maximal degree in co-relation 550. Up to 32 conditions per place. [2023-08-04 06:11:54,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 06:11:54,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 155 transitions, 324 flow [2023-08-04 06:11:54,559 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:11:54,573 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 155 transitions, 324 flow [2023-08-04 06:11:54,580 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 155 transitions, 324 flow [2023-08-04 06:11:54,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 155 transitions, 324 flow [2023-08-04 06:11:54,700 INFO L124 PetriNetUnfolderBase]: 62/938 cut-off events. [2023-08-04 06:11:54,700 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:11:54,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 938 events. 62/938 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5841 event pairs, 0 based on Foata normal form. 0/822 useless extension candidates. Maximal degree in co-relation 536. Up to 32 conditions per place. [2023-08-04 06:11:54,721 INFO L119 LiptonReduction]: Number of co-enabled transitions 4034 [2023-08-04 06:11:59,073 INFO L134 LiptonReduction]: Checked pairs total: 10071 [2023-08-04 06:11:59,073 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-04 06:11:59,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:11:59,090 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;@7a288cee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:11:59,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:11:59,095 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:11:59,096 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2023-08-04 06:11:59,096 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:11:59,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:11:59,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:11:59,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:11:59,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:11:59,101 INFO L85 PathProgramCache]: Analyzing trace with hash 80555844, now seen corresponding path program 1 times [2023-08-04 06:11:59,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:11:59,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866296987] [2023-08-04 06:11:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:11:59,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:11:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:11:59,339 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 06:11:59,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:11:59,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866296987] [2023-08-04 06:11:59,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866296987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:11:59,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:11:59,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:11:59,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023321006] [2023-08-04 06:11:59,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:11:59,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:11:59,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:11:59,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:11:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:11:59,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 290 [2023-08-04 06:11:59,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 06:11:59,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:11:59,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 290 [2023-08-04 06:11:59,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:00,780 INFO L124 PetriNetUnfolderBase]: 7844/11627 cut-off events. [2023-08-04 06:12:00,780 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-04 06:12:00,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23213 conditions, 11627 events. 7844/11627 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 73894 event pairs, 6714 based on Foata normal form. 360/10040 useless extension candidates. Maximal degree in co-relation 23199. Up to 11232 conditions per place. [2023-08-04 06:12:00,854 INFO L140 encePairwiseOnDemand]: 286/290 looper letters, 33 selfloop transitions, 2 changer transitions 1/42 dead transitions. [2023-08-04 06:12:00,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 170 flow [2023-08-04 06:12:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:12:00,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:12:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-08-04 06:12:00,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160919540229885 [2023-08-04 06:12:00,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-08-04 06:12:00,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-08-04 06:12:00,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:00,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-08-04 06:12:00,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 06:12:00,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 06:12:00,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 06:12:00,891 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 94 flow. Second operand 3 states and 449 transitions. [2023-08-04 06:12:00,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 170 flow [2023-08-04 06:12:00,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:12:00,897 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 100 flow [2023-08-04 06:12:00,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-08-04 06:12:00,901 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2023-08-04 06:12:00,902 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 100 flow [2023-08-04 06:12:00,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 06:12:00,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:00,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:00,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:12:00,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:12:00,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:00,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1488186560, now seen corresponding path program 1 times [2023-08-04 06:12:00,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:00,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158797439] [2023-08-04 06:12:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:00,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:01,059 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 06:12:01,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:01,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158797439] [2023-08-04 06:12:01,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158797439] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:12:01,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42769063] [2023-08-04 06:12:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:01,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:01,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:01,065 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 06:12:01,067 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 06:12:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:01,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:12:01,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:12:01,190 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 06:12:01,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:12:01,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42769063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:12:01,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:12:01,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:12:01,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19365529] [2023-08-04 06:12:01,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:12:01,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:12:01,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:01,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:12:01,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:12:01,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 290 [2023-08-04 06:12:01,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 06:12:01,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:01,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 290 [2023-08-04 06:12:01,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:02,129 INFO L124 PetriNetUnfolderBase]: 6311/9151 cut-off events. [2023-08-04 06:12:02,131 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-04 06:12:02,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18295 conditions, 9151 events. 6311/9151 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 54462 event pairs, 5455 based on Foata normal form. 0/7702 useless extension candidates. Maximal degree in co-relation 18278. Up to 8842 conditions per place. [2023-08-04 06:12:02,295 INFO L140 encePairwiseOnDemand]: 287/290 looper letters, 35 selfloop transitions, 2 changer transitions 1/44 dead transitions. [2023-08-04 06:12:02,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 186 flow [2023-08-04 06:12:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:12:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:12:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-08-04 06:12:02,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2023-08-04 06:12:02,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-08-04 06:12:02,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-08-04 06:12:02,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:02,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-08-04 06:12:02,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 06:12:02,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 06:12:02,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 06:12:02,306 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 100 flow. Second operand 3 states and 450 transitions. [2023-08-04 06:12:02,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 44 transitions, 186 flow [2023-08-04 06:12:02,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:12:02,308 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 104 flow [2023-08-04 06:12:02,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-08-04 06:12:02,310 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2023-08-04 06:12:02,310 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 104 flow [2023-08-04 06:12:02,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 06:12:02,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:02,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:02,320 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 06:12:02,518 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 06:12:02,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:12:02,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:02,521 INFO L85 PathProgramCache]: Analyzing trace with hash 792849403, now seen corresponding path program 1 times [2023-08-04 06:12:02,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:02,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283412133] [2023-08-04 06:12:02,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:02,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:02,600 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 06:12:02,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:02,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283412133] [2023-08-04 06:12:02,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283412133] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:12:02,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377382952] [2023-08-04 06:12:02,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:02,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:02,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:02,604 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 06:12:02,608 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 06:12:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:02,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:12:02,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:12:02,711 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 06:12:02,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:12:02,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377382952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:12:02,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:12:02,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:12:02,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897156446] [2023-08-04 06:12:02,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:12:02,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:12:02,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:02,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:12:02,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:12:02,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 290 [2023-08-04 06:12:02,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 06:12:02,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:02,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 290 [2023-08-04 06:12:02,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:03,627 INFO L124 PetriNetUnfolderBase]: 5387/7700 cut-off events. [2023-08-04 06:12:03,627 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 06:12:03,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15452 conditions, 7700 events. 5387/7700 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 44508 event pairs, 3830 based on Foata normal form. 0/6547 useless extension candidates. Maximal degree in co-relation 15435. Up to 7340 conditions per place. [2023-08-04 06:12:03,666 INFO L140 encePairwiseOnDemand]: 287/290 looper letters, 38 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-04 06:12:03,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 202 flow [2023-08-04 06:12:03,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:12:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:12:03,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-08-04 06:12:03,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206896551724138 [2023-08-04 06:12:03,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-08-04 06:12:03,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-08-04 06:12:03,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:03,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-08-04 06:12:03,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 06:12:03,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 06:12:03,673 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 06:12:03,673 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 104 flow. Second operand 3 states and 453 transitions. [2023-08-04 06:12:03,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 202 flow [2023-08-04 06:12:03,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:12:03,675 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 108 flow [2023-08-04 06:12:03,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2023-08-04 06:12:03,676 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 5 predicate places. [2023-08-04 06:12:03,676 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 108 flow [2023-08-04 06:12:03,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 06:12:03,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:03,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:03,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 06:12:03,887 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 06:12:03,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:12:03,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:03,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1380579893, now seen corresponding path program 1 times [2023-08-04 06:12:03,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:03,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116028176] [2023-08-04 06:12:03,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:03,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:03,947 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 06:12:03,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:03,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116028176] [2023-08-04 06:12:03,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116028176] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:12:03,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33049549] [2023-08-04 06:12:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:03,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:03,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:03,950 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 06:12:03,953 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 06:12:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:04,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:12:04,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:12:04,071 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 06:12:04,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:12:04,101 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 06:12:04,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33049549] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:12:04,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:12:04,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:12:04,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515326075] [2023-08-04 06:12:04,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:12:04,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:12:04,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:04,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:12:04,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:12:04,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 290 [2023-08-04 06:12:04,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states 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 06:12:04,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:04,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 290 [2023-08-04 06:12:04,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:04,137 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 06:12:04,137 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:04,137 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 4. Compared 20 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 06:12:04,138 INFO L140 encePairwiseOnDemand]: 287/290 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 06:12:04,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 10 transitions, 43 flow [2023-08-04 06:12:04,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:12:04,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:12:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 554 transitions. [2023-08-04 06:12:04,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47758620689655173 [2023-08-04 06:12:04,140 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 554 transitions. [2023-08-04 06:12:04,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 554 transitions. [2023-08-04 06:12:04,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:04,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 554 transitions. [2023-08-04 06:12:04,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states 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 06:12:04,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states 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 06:12:04,144 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states 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 06:12:04,144 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 108 flow. Second operand 4 states and 554 transitions. [2023-08-04 06:12:04,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 10 transitions, 43 flow [2023-08-04 06:12:04,145 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 06:12:04,145 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-04 06:12:04,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, 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 06:12:04,146 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -29 predicate places. [2023-08-04 06:12:04,146 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-04 06:12:04,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 states 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 06:12:04,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:12:04,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:12:04,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:12:04,157 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 06:12:04,354 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 06:12:04,355 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 06:12:04,356 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:12:04,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 06:12:04,439 INFO L124 PetriNetUnfolderBase]: 62/945 cut-off events. [2023-08-04 06:12:04,440 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:04,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 945 events. 62/945 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5900 event pairs, 0 based on Foata normal form. 0/829 useless extension candidates. Maximal degree in co-relation 550. Up to 32 conditions per place. [2023-08-04 06:12:04,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 06:12:04,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 127 transitions, 274 flow [2023-08-04 06:12:04,445 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:12:04,445 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 06:12:04,445 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 06:12:04,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 127 transitions, 274 flow [2023-08-04 06:12:04,477 INFO L124 PetriNetUnfolderBase]: 14/449 cut-off events. [2023-08-04 06:12:04,477 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:04,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 449 events. 14/449 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2107 event pairs, 0 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 302. Up to 16 conditions per place. [2023-08-04 06:12:04,483 INFO L119 LiptonReduction]: Number of co-enabled transitions 2310 [2023-08-04 06:12:07,532 INFO L134 LiptonReduction]: Checked pairs total: 5593 [2023-08-04 06:12:07,533 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-04 06:12:07,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:12:07,535 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;@7a288cee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:12:07,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:12:07,538 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:12:07,538 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 06:12:07,538 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:07,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:07,539 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:12:07,539 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 06:12:07,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:07,539 INFO L85 PathProgramCache]: Analyzing trace with hash 744501299, now seen corresponding path program 1 times [2023-08-04 06:12:07,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:07,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607746769] [2023-08-04 06:12:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:07,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:12:07,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:12:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:12:07,599 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:12:07,599 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:12:07,599 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 06:12:07,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 06:12:07,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 06:12:07,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 06:12:07,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 06:12:07,602 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:12:07,602 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:12:07,603 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:12:07,603 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:12:07,638 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:12:07,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 191 transitions, 430 flow [2023-08-04 06:12:08,129 INFO L124 PetriNetUnfolderBase]: 282/4423 cut-off events. [2023-08-04 06:12:08,130 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:12:08,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4712 conditions, 4423 events. 282/4423 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 43463 event pairs, 0 based on Foata normal form. 0/3886 useless extension candidates. Maximal degree in co-relation 3164. Up to 162 conditions per place. [2023-08-04 06:12:08,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 191 transitions, 430 flow [2023-08-04 06:12:08,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 188 transitions, 412 flow [2023-08-04 06:12:08,170 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:12:08,170 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 188 transitions, 412 flow [2023-08-04 06:12:08,170 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 188 transitions, 412 flow [2023-08-04 06:12:08,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 188 transitions, 412 flow [2023-08-04 06:12:08,658 INFO L124 PetriNetUnfolderBase]: 282/4410 cut-off events. [2023-08-04 06:12:08,658 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-04 06:12:08,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 4410 events. 282/4410 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 43249 event pairs, 0 based on Foata normal form. 0/3873 useless extension candidates. Maximal degree in co-relation 3143. Up to 162 conditions per place. [2023-08-04 06:12:08,771 INFO L119 LiptonReduction]: Number of co-enabled transitions 9956 [2023-08-04 06:12:12,461 INFO L134 LiptonReduction]: Checked pairs total: 31813 [2023-08-04 06:12:12,461 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-04 06:12:12,463 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:12:12,463 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;@7a288cee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:12:12,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:12:12,467 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:12:12,467 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2023-08-04 06:12:12,467 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 06:12:12,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:12,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:12,467 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 06:12:12,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:12,468 INFO L85 PathProgramCache]: Analyzing trace with hash 437695224, now seen corresponding path program 1 times [2023-08-04 06:12:12,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:12,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179633574] [2023-08-04 06:12:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:12,506 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 06:12:12,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:12,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179633574] [2023-08-04 06:12:12,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179633574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:12:12,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:12:12,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:12:12,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908668123] [2023-08-04 06:12:12,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:12:12,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:12:12,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:12,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:12:12,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:12:12,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 331 [2023-08-04 06:12:12,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states 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 06:12:12,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:12,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 331 [2023-08-04 06:12:12,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand