/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_mix020.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:46:16,721 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:46:16,788 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:46:16,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:46:16,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:46:16,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:46:16,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:46:16,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:46:16,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:46:16,832 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:46:16,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:46:16,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:46:16,834 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:46:16,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:46:16,835 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:46:16,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:46:16,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:46:16,836 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:46:16,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:46:16,836 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:46:16,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:46:16,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:46:16,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:46:16,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:46:16,839 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:46:16,839 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:46:16,839 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:46:16,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:46:16,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:46:16,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:46:16,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:46:16,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:46:16,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:46:16,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:46:16,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:46:16,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:46:16,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:46:16,842 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:46:16,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:46:16,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:46:16,842 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:46:16,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:46:17,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:46:17,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:46:17,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:46:17,103 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:46:17,103 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:46:17,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix020.oepc_bound2.i [2023-08-04 05:46:18,300 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:46:18,532 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:46:18,532 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix020.oepc_bound2.i [2023-08-04 05:46:18,554 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150e7b19d/64caa42c0a6643a8bec8a028ae525e1d/FLAG3aa057545 [2023-08-04 05:46:18,567 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/150e7b19d/64caa42c0a6643a8bec8a028ae525e1d [2023-08-04 05:46:18,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:46:18,571 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:46:18,572 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:46:18,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:46:18,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:46:18,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:46:18" (1/1) ... [2023-08-04 05:46:18,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4f56a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:18, skipping insertion in model container [2023-08-04 05:46:18,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:46:18" (1/1) ... [2023-08-04 05:46:18,621 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:46:18,795 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_mix020.oepc_bound2.i[945,958] [2023-08-04 05:46:19,023 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:46:19,032 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:46:19,042 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_mix020.oepc_bound2.i[945,958] [2023-08-04 05:46:19,068 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:46:19,070 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:46:19,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:46:19,167 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:46:19,167 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:46:19,172 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:46:19,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:19 WrapperNode [2023-08-04 05:46:19,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:46:19,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:46:19,174 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:46:19,174 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:46:19,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:19" (1/1) ... [2023-08-04 05:46:19,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:19" (1/1) ... [2023-08-04 05:46:19,224 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 177 [2023-08-04 05:46:19,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:46:19,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:46:19,225 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:46:19,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:46:19,233 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:19" (1/1) ... [2023-08-04 05:46:19,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:19" (1/1) ... [2023-08-04 05:46:19,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:19" (1/1) ... [2023-08-04 05:46:19,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:19" (1/1) ... [2023-08-04 05:46:19,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:19" (1/1) ... [2023-08-04 05:46:19,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:19" (1/1) ... [2023-08-04 05:46:19,253 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:19" (1/1) ... [2023-08-04 05:46:19,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:19" (1/1) ... [2023-08-04 05:46:19,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:46:19,261 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:46:19,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:46:19,262 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:46:19,262 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:19" (1/1) ... [2023-08-04 05:46:19,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:46:19,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:46:19,302 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 05:46:19,333 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 05:46:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:46:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:46:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:46:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:46:19,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:46:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:46:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:46:19,353 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:46:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:46:19,354 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:46:19,354 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:46:19,354 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:46:19,354 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:46:19,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:46:19,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:46:19,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:46:19,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:46:19,356 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 05:46:19,537 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:46:19,539 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:46:19,896 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:46:20,058 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:46:20,059 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:46:20,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:46:20 BoogieIcfgContainer [2023-08-04 05:46:20,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:46:20,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:46:20,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:46:20,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:46:20,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:46:18" (1/3) ... [2023-08-04 05:46:20,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e067dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:46:20, skipping insertion in model container [2023-08-04 05:46:20,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:19" (2/3) ... [2023-08-04 05:46:20,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e067dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:46:20, skipping insertion in model container [2023-08-04 05:46:20,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:46:20" (3/3) ... [2023-08-04 05:46:20,074 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix020.oepc_bound2.i [2023-08-04 05:46:20,081 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:46:20,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:46:20,089 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:46:20,089 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:46:20,147 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:46:20,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:46:20,416 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-04 05:46:20,416 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:20,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 933 events. 62/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5779 event pairs, 0 based on Foata normal form. 0/824 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 05:46:20,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:46:20,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 159 transitions, 338 flow [2023-08-04 05:46:20,439 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:46:20,452 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 159 transitions, 338 flow [2023-08-04 05:46:20,456 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 159 transitions, 338 flow [2023-08-04 05:46:20,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:46:20,565 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-04 05:46:20,565 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:20,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 933 events. 62/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5779 event pairs, 0 based on Foata normal form. 0/824 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 05:46:20,587 INFO L119 LiptonReduction]: Number of co-enabled transitions 4484 [2023-08-04 05:46:24,620 INFO L134 LiptonReduction]: Checked pairs total: 12142 [2023-08-04 05:46:24,621 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-04 05:46:24,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:46:24,637 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;@57686f8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:46:24,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:46:24,640 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:46:24,640 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-04 05:46:24,640 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:24,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:46:24,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 05:46:24,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:46:24,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:46:24,645 INFO L85 PathProgramCache]: Analyzing trace with hash 20673067, now seen corresponding path program 1 times [2023-08-04 05:46:24,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:46:24,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689588185] [2023-08-04 05:46:24,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:24,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:46:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:25,036 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 05:46:25,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:46:25,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689588185] [2023-08-04 05:46:25,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689588185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:46:25,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:46:25,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:46:25,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698039297] [2023-08-04 05:46:25,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:46:25,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:46:25,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:46:25,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:46:25,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:46:25,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 292 [2023-08-04 05:46:25,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 106 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 05:46:25,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:46:25,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 292 [2023-08-04 05:46:25,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:46:27,329 INFO L124 PetriNetUnfolderBase]: 12873/19847 cut-off events. [2023-08-04 05:46:27,330 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-08-04 05:46:27,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38656 conditions, 19847 events. 12873/19847 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 140275 event pairs, 3816 based on Foata normal form. 0/18122 useless extension candidates. Maximal degree in co-relation 32364. Up to 12394 conditions per place. [2023-08-04 05:46:27,470 INFO L140 encePairwiseOnDemand]: 288/292 looper letters, 56 selfloop transitions, 2 changer transitions 7/69 dead transitions. [2023-08-04 05:46:27,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 289 flow [2023-08-04 05:46:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:46:27,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:46:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2023-08-04 05:46:27,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490867579908676 [2023-08-04 05:46:27,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2023-08-04 05:46:27,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2023-08-04 05:46:27,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:46:27,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2023-08-04 05:46:27,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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 05:46:27,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 05:46:27,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 05:46:27,512 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 106 flow. Second operand 3 states and 481 transitions. [2023-08-04 05:46:27,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 289 flow [2023-08-04 05:46:27,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:46:27,519 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 88 flow [2023-08-04 05:46:27,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2023-08-04 05:46:27,524 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-04 05:46:27,524 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 88 flow [2023-08-04 05:46:27,525 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 05:46:27,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:46:27,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:46:27,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:46:27,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:46:27,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:46:27,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2015368495, now seen corresponding path program 1 times [2023-08-04 05:46:27,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:46:27,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509430269] [2023-08-04 05:46:27,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:27,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:46:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:27,736 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 05:46:27,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:46:27,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509430269] [2023-08-04 05:46:27,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509430269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:46:27,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:46:27,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:46:27,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129003566] [2023-08-04 05:46:27,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:46:27,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:46:27,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:46:27,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:46:27,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:46:27,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 292 [2023-08-04 05:46:27,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 88 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 05:46:27,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:46:27,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 292 [2023-08-04 05:46:27,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:46:29,386 INFO L124 PetriNetUnfolderBase]: 9395/13670 cut-off events. [2023-08-04 05:46:29,386 INFO L125 PetriNetUnfolderBase]: For 1009/1009 co-relation queries the response was YES. [2023-08-04 05:46:29,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28135 conditions, 13670 events. 9395/13670 cut-off events. For 1009/1009 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 81254 event pairs, 6512 based on Foata normal form. 0/12822 useless extension candidates. Maximal degree in co-relation 28119. Up to 13240 conditions per place. [2023-08-04 05:46:29,457 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 33 selfloop transitions, 2 changer transitions 1/40 dead transitions. [2023-08-04 05:46:29,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 170 flow [2023-08-04 05:46:29,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:46:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:46:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2023-08-04 05:46:29,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079908675799086 [2023-08-04 05:46:29,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2023-08-04 05:46:29,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2023-08-04 05:46:29,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:46:29,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2023-08-04 05:46:29,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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 05:46:29,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 05:46:29,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 05:46:29,464 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 88 flow. Second operand 3 states and 445 transitions. [2023-08-04 05:46:29,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 170 flow [2023-08-04 05:46:29,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:46:29,466 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 92 flow [2023-08-04 05:46:29,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=84, 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=92, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-04 05:46:29,467 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-04 05:46:29,467 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 92 flow [2023-08-04 05:46:29,468 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 05:46:29,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:46:29,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:46:29,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 05:46:29,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:46:29,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:46:29,469 INFO L85 PathProgramCache]: Analyzing trace with hash 660422842, now seen corresponding path program 1 times [2023-08-04 05:46:29,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:46:29,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064366415] [2023-08-04 05:46:29,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:29,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:46:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:29,515 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 05:46:29,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:46:29,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064366415] [2023-08-04 05:46:29,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064366415] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:46:29,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705996828] [2023-08-04 05:46:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:29,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:46:29,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:46:29,529 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 05:46:29,535 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 05:46:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:29,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:46:29,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:46:29,665 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 05:46:29,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:46:29,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705996828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:46:29,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:46:29,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:46:29,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850036001] [2023-08-04 05:46:29,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:46:29,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:46:29,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:46:29,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:46:29,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:46:29,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 292 [2023-08-04 05:46:29,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 92 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 05:46:29,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:46:29,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 292 [2023-08-04 05:46:29,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:46:30,845 INFO L124 PetriNetUnfolderBase]: 7984/11483 cut-off events. [2023-08-04 05:46:30,845 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-04 05:46:30,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22784 conditions, 11483 events. 7984/11483 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 65947 event pairs, 5674 based on Foata normal form. 0/10890 useless extension candidates. Maximal degree in co-relation 22767. Up to 11037 conditions per place. [2023-08-04 05:46:30,918 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 36 selfloop transitions, 2 changer transitions 1/43 dead transitions. [2023-08-04 05:46:30,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 184 flow [2023-08-04 05:46:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:46:30,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:46:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-08-04 05:46:30,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2023-08-04 05:46:30,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-08-04 05:46:30,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-08-04 05:46:30,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:46:30,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-08-04 05:46:30,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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 05:46:30,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 05:46:30,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 05:46:30,925 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 92 flow. Second operand 3 states and 448 transitions. [2023-08-04 05:46:30,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 184 flow [2023-08-04 05:46:30,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:46:30,927 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 96 flow [2023-08-04 05:46:30,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=88, 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=96, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-08-04 05:46:30,929 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-04 05:46:30,929 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 96 flow [2023-08-04 05:46:30,929 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 05:46:30,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:46:30,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:46:30,940 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 05:46:31,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:46:31,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:46:31,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:46:31,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1251856731, now seen corresponding path program 1 times [2023-08-04 05:46:31,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:46:31,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121609420] [2023-08-04 05:46:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:31,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:46:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:31,193 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 05:46:31,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:46:31,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121609420] [2023-08-04 05:46:31,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121609420] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:46:31,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810792718] [2023-08-04 05:46:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:31,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:46:31,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:46:31,196 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 05:46:31,198 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 05:46:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:31,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:46:31,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:46:31,303 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 05:46:31,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:46:31,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810792718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:46:31,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:46:31,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:46:31,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422889530] [2023-08-04 05:46:31,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:46:31,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:46:31,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:46:31,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:46:31,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:46:31,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 292 [2023-08-04 05:46:31,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 96 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 05:46:31,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:46:31,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 292 [2023-08-04 05:46:31,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:46:32,108 INFO L124 PetriNetUnfolderBase]: 6824/9763 cut-off events. [2023-08-04 05:46:32,108 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-04 05:46:32,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19360 conditions, 9763 events. 6824/9763 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 53548 event pairs, 6056 based on Foata normal form. 0/9310 useless extension candidates. Maximal degree in co-relation 19343. Up to 9119 conditions per place. [2023-08-04 05:46:32,176 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 39 selfloop transitions, 2 changer transitions 1/46 dead transitions. [2023-08-04 05:46:32,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 200 flow [2023-08-04 05:46:32,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:46:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:46:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-04 05:46:32,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148401826484018 [2023-08-04 05:46:32,178 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-04 05:46:32,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-04 05:46:32,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:46:32,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-04 05:46:32,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 05:46:32,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 05:46:32,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 05:46:32,182 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 96 flow. Second operand 3 states and 451 transitions. [2023-08-04 05:46:32,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 200 flow [2023-08-04 05:46:32,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:46:32,184 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 100 flow [2023-08-04 05:46:32,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=92, 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=100, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-08-04 05:46:32,185 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-04 05:46:32,185 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 100 flow [2023-08-04 05:46:32,186 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 05:46:32,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:46:32,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:46:32,195 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 05:46:32,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 05:46:32,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:46:32,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:46:32,393 INFO L85 PathProgramCache]: Analyzing trace with hash -805735996, now seen corresponding path program 1 times [2023-08-04 05:46:32,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:46:32,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564568819] [2023-08-04 05:46:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:32,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:46:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:32,470 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 05:46:32,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:46:32,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564568819] [2023-08-04 05:46:32,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564568819] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:46:32,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131415440] [2023-08-04 05:46:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:32,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:46:32,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:46:32,473 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 05:46:32,495 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 05:46:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:32,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:46:32,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:46:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:46:32,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:46:32,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131415440] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:46:32,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:46:32,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:46:32,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406412752] [2023-08-04 05:46:32,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:46:32,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:46:32,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:46:32,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:46:32,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:46:32,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 292 [2023-08-04 05:46:32,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 100 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 05:46:32,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:46:32,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 292 [2023-08-04 05:46:32,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:46:33,361 INFO L124 PetriNetUnfolderBase]: 6392/8827 cut-off events. [2023-08-04 05:46:33,361 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-08-04 05:46:33,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17989 conditions, 8827 events. 6392/8827 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 44467 event pairs, 4872 based on Foata normal form. 0/8486 useless extension candidates. Maximal degree in co-relation 17971. Up to 7279 conditions per place. [2023-08-04 05:46:33,403 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 43 selfloop transitions, 2 changer transitions 1/50 dead transitions. [2023-08-04 05:46:33,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 220 flow [2023-08-04 05:46:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:46:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:46:33,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-04 05:46:33,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519406392694064 [2023-08-04 05:46:33,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-04 05:46:33,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-04 05:46:33,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:46:33,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-04 05:46:33,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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 05:46:33,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 05:46:33,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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 05:46:33,418 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 100 flow. Second operand 3 states and 455 transitions. [2023-08-04 05:46:33,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 220 flow [2023-08-04 05:46:33,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:46:33,424 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 104 flow [2023-08-04 05:46:33,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, 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=104, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-08-04 05:46:33,426 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-04 05:46:33,427 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 104 flow [2023-08-04 05:46:33,427 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 05:46:33,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:46:33,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:46:33,434 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 05:46:33,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:46:33,635 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:46:33,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:46:33,635 INFO L85 PathProgramCache]: Analyzing trace with hash 260443665, now seen corresponding path program 1 times [2023-08-04 05:46:33,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:46:33,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181535073] [2023-08-04 05:46:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:33,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:46:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:33,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:46:33,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:46:33,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181535073] [2023-08-04 05:46:33,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181535073] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:46:33,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836640883] [2023-08-04 05:46:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:33,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:46:33,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:46:33,721 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:46:33,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 05:46:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:33,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:46:33,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:46:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:46:33,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:46:33,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:46:33,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836640883] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:46:33,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:46:33,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-04 05:46:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987333814] [2023-08-04 05:46:33,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:46:33,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 05:46:33,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:46:33,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 05:46:33,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 05:46:33,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 292 [2023-08-04 05:46:33,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 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 05:46:33,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:46:33,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 292 [2023-08-04 05:46:33,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:46:33,911 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 05:46:33,911 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:33,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 21 events. 6/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 47. Up to 14 conditions per place. [2023-08-04 05:46:33,912 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 05:46:33,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 51 flow [2023-08-04 05:46:33,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:46:33,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:46:33,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-08-04 05:46:33,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2023-08-04 05:46:33,914 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-08-04 05:46:33,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-08-04 05:46:33,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:46:33,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-08-04 05:46:33,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 05:46:33,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 05:46:33,919 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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 05:46:33,920 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 104 flow. Second operand 4 states and 552 transitions. [2023-08-04 05:46:33,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 51 flow [2023-08-04 05:46:33,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:46:33,920 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-04 05:46:33,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2023-08-04 05:46:33,921 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -30 predicate places. [2023-08-04 05:46:33,921 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-04 05:46:33,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 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 05:46:33,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:46:33,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:46:33,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:46:33,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 05:46:34,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:46:34,131 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-04 05:46:34,133 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:46:34,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:46:34,231 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-04 05:46:34,232 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:34,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 933 events. 62/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5779 event pairs, 0 based on Foata normal form. 0/824 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 05:46:34,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:46:34,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 128 transitions, 276 flow [2023-08-04 05:46:34,236 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:46:34,236 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 128 transitions, 276 flow [2023-08-04 05:46:34,237 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 128 transitions, 276 flow [2023-08-04 05:46:34,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 128 transitions, 276 flow [2023-08-04 05:46:34,276 INFO L124 PetriNetUnfolderBase]: 14/437 cut-off events. [2023-08-04 05:46:34,277 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:34,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 437 events. 14/437 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1996 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 306. Up to 16 conditions per place. [2023-08-04 05:46:34,282 INFO L119 LiptonReduction]: Number of co-enabled transitions 2624 [2023-08-04 05:46:37,514 INFO L134 LiptonReduction]: Checked pairs total: 7146 [2023-08-04 05:46:37,515 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-04 05:46:37,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:46:37,517 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;@57686f8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:46:37,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:46:37,520 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:46:37,520 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-08-04 05:46:37,520 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:37,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:46:37,521 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:46:37,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 05:46:37,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:46:37,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1327111729, now seen corresponding path program 1 times [2023-08-04 05:46:37,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:46:37,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17231386] [2023-08-04 05:46:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:37,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:46:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:46:37,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:46:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:46:37,571 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:46:37,571 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:46:37,571 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:46:37,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:46:37,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:46:37,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:46:37,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 05:46:37,572 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:46:37,580 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:46:37,581 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:46:37,581 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:46:37,620 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:46:37,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 193 transitions, 434 flow [2023-08-04 05:46:38,215 INFO L124 PetriNetUnfolderBase]: 282/4325 cut-off events. [2023-08-04 05:46:38,215 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:46:38,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4614 conditions, 4325 events. 282/4325 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 41933 event pairs, 0 based on Foata normal form. 0/3840 useless extension candidates. Maximal degree in co-relation 3120. Up to 162 conditions per place. [2023-08-04 05:46:38,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 193 transitions, 434 flow [2023-08-04 05:46:38,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 193 transitions, 434 flow [2023-08-04 05:46:38,258 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:46:38,258 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 193 transitions, 434 flow [2023-08-04 05:46:38,259 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 193 transitions, 434 flow [2023-08-04 05:46:38,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 193 transitions, 434 flow [2023-08-04 05:46:38,688 INFO L124 PetriNetUnfolderBase]: 282/4325 cut-off events. [2023-08-04 05:46:38,689 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:46:38,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4614 conditions, 4325 events. 282/4325 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 41933 event pairs, 0 based on Foata normal form. 0/3840 useless extension candidates. Maximal degree in co-relation 3120. Up to 162 conditions per place. [2023-08-04 05:46:38,779 INFO L119 LiptonReduction]: Number of co-enabled transitions 11008 [2023-08-04 05:46:42,590 INFO L134 LiptonReduction]: Checked pairs total: 36081 [2023-08-04 05:46:42,591 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-04 05:46:42,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:46:42,593 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;@57686f8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:46:42,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:46:42,594 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:46:42,594 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 05:46:42,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:42,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:46:42,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 05:46:42,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:46:42,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:46:42,595 INFO L85 PathProgramCache]: Analyzing trace with hash 35083495, now seen corresponding path program 1 times [2023-08-04 05:46:42,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:46:42,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93196792] [2023-08-04 05:46:42,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:42,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:46:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:42,709 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 05:46:42,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:46:42,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93196792] [2023-08-04 05:46:42,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93196792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:46:42,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:46:42,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:46:42,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183097441] [2023-08-04 05:46:42,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:46:42,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:46:42,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:46:42,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:46:42,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:46:42,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 335 [2023-08-04 05:46:42,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 05:46:42,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:46:42,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 335 [2023-08-04 05:46:42,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand