/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_mix018.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:44:28,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:44:28,106 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:44:28,111 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:44:28,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:44:28,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:44:28,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:44:28,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:44:28,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:44:28,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:44:28,143 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:44:28,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:44:28,144 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:44:28,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:44:28,146 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:44:28,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:44:28,146 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:44:28,146 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:44:28,146 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:44:28,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:44:28,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:44:28,147 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:44:28,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:44:28,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:44:28,148 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:44:28,148 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:44:28,148 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:44:28,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:44:28,149 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:44:28,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:44:28,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:44:28,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:44:28,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:44:28,150 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:44:28,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:44:28,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:44:28,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:44:28,151 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:44:28,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:44:28,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:44:28,152 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:44:28,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:44:28,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:44:28,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:44:28,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:44:28,437 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:44:28,438 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:44:28,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix018.opt_bound2.i [2023-08-04 05:44:29,539 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:44:29,738 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:44:29,739 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix018.opt_bound2.i [2023-08-04 05:44:29,753 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcce74710/951edd139bc441dd918201bf3ded0a46/FLAGaa27a0f5f [2023-08-04 05:44:29,768 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcce74710/951edd139bc441dd918201bf3ded0a46 [2023-08-04 05:44:29,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:44:29,771 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:44:29,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:44:29,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:44:29,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:44:29,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:44:29" (1/1) ... [2023-08-04 05:44:29,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5e996b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:29, skipping insertion in model container [2023-08-04 05:44:29,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:44:29" (1/1) ... [2023-08-04 05:44:29,823 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:44:29,969 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_mix018.opt_bound2.i[944,957] [2023-08-04 05:44:30,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:44:30,224 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:44:30,237 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_mix018.opt_bound2.i[944,957] [2023-08-04 05:44:30,252 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:44:30,254 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:44:30,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:44:30,329 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:44:30,329 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:44:30,335 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:44:30,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:30 WrapperNode [2023-08-04 05:44:30,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:44:30,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:44:30,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:44:30,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:44:30,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:30" (1/1) ... [2023-08-04 05:44:30,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:30" (1/1) ... [2023-08-04 05:44:30,417 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 197 [2023-08-04 05:44:30,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:44:30,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:44:30,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:44:30,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:44:30,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:30" (1/1) ... [2023-08-04 05:44:30,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:30" (1/1) ... [2023-08-04 05:44:30,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:30" (1/1) ... [2023-08-04 05:44:30,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:30" (1/1) ... [2023-08-04 05:44:30,464 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:30" (1/1) ... [2023-08-04 05:44:30,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:30" (1/1) ... [2023-08-04 05:44:30,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:30" (1/1) ... [2023-08-04 05:44:30,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:30" (1/1) ... [2023-08-04 05:44:30,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:44:30,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:44:30,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:44:30,497 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:44:30,497 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:30" (1/1) ... [2023-08-04 05:44:30,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:44:30,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:44:30,522 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 05:44:30,523 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 05:44:30,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:44:30,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:44:30,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:44:30,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:44:30,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:44:30,546 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:44:30,546 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:44:30,546 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:44:30,546 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:44:30,547 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:44:30,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:44:30,547 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:44:30,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:44:30,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:44:30,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:44:30,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:44:30,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:44:30,549 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 05:44:30,672 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:44:30,674 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:44:30,997 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:44:31,106 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:44:31,107 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:44:31,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:44:31 BoogieIcfgContainer [2023-08-04 05:44:31,110 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:44:31,114 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:44:31,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:44:31,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:44:31,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:44:29" (1/3) ... [2023-08-04 05:44:31,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bba7b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:44:31, skipping insertion in model container [2023-08-04 05:44:31,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:44:30" (2/3) ... [2023-08-04 05:44:31,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bba7b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:44:31, skipping insertion in model container [2023-08-04 05:44:31,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:44:31" (3/3) ... [2023-08-04 05:44:31,122 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix018.opt_bound2.i [2023-08-04 05:44:31,129 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:44:31,138 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:44:31,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:44:31,138 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:44:31,212 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:44:31,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 156 transitions, 332 flow [2023-08-04 05:44:31,492 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-04 05:44:31,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:44:31,502 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 5806 event pairs, 0 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 546. Up to 32 conditions per place. [2023-08-04 05:44:31,502 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 156 transitions, 332 flow [2023-08-04 05:44:31,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 153 transitions, 320 flow [2023-08-04 05:44:31,514 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:44:31,529 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 153 transitions, 320 flow [2023-08-04 05:44:31,531 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 153 transitions, 320 flow [2023-08-04 05:44:31,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 153 transitions, 320 flow [2023-08-04 05:44:31,636 INFO L124 PetriNetUnfolderBase]: 62/926 cut-off events. [2023-08-04 05:44:31,636 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:44:31,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 926 events. 62/926 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5703 event pairs, 0 based on Foata normal form. 0/810 useless extension candidates. Maximal degree in co-relation 532. Up to 32 conditions per place. [2023-08-04 05:44:31,655 INFO L119 LiptonReduction]: Number of co-enabled transitions 3762 [2023-08-04 05:44:35,443 INFO L134 LiptonReduction]: Checked pairs total: 8391 [2023-08-04 05:44:35,443 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-04 05:44:35,455 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:44:35,461 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;@1c411570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:44:35,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:44:35,467 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:44:35,467 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2023-08-04 05:44:35,467 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:44:35,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:44:35,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:44:35,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:44:35,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:44:35,473 INFO L85 PathProgramCache]: Analyzing trace with hash -677641924, now seen corresponding path program 1 times [2023-08-04 05:44:35,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:44:35,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132417950] [2023-08-04 05:44:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:44:35,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:44:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:44:35,717 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 05:44:35,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:44:35,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132417950] [2023-08-04 05:44:35,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132417950] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:44:35,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:44:35,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:44:35,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242860297] [2023-08-04 05:44:35,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:44:35,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:44:35,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:44:35,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:44:35,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:44:35,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 287 [2023-08-04 05:44:35,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:44:35,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:44:35,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 287 [2023-08-04 05:44:35,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:44:37,032 INFO L124 PetriNetUnfolderBase]: 7194/10734 cut-off events. [2023-08-04 05:44:37,032 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-04 05:44:37,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21286 conditions, 10734 events. 7194/10734 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 66033 event pairs, 6164 based on Foata normal form. 0/9312 useless extension candidates. Maximal degree in co-relation 21272. Up to 10282 conditions per place. [2023-08-04 05:44:37,099 INFO L140 encePairwiseOnDemand]: 283/287 looper letters, 32 selfloop transitions, 2 changer transitions 1/39 dead transitions. [2023-08-04 05:44:37,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 162 flow [2023-08-04 05:44:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:44:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:44:37,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-08-04 05:44:37,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133565621370499 [2023-08-04 05:44:37,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-08-04 05:44:37,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-08-04 05:44:37,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:44:37,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-08-04 05:44:37,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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 05:44:37,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 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 05:44:37,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 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 05:44:37,130 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 88 flow. Second operand 3 states and 442 transitions. [2023-08-04 05:44:37,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 162 flow [2023-08-04 05:44:37,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:44:37,135 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 94 flow [2023-08-04 05:44:37,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-04 05:44:37,139 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2023-08-04 05:44:37,140 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 94 flow [2023-08-04 05:44:37,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:44:37,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:44:37,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:44:37,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:44:37,141 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:44:37,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:44:37,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1235601751, now seen corresponding path program 1 times [2023-08-04 05:44:37,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:44:37,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92426740] [2023-08-04 05:44:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:44:37,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:44:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:44:37,314 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 05:44:37,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:44:37,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92426740] [2023-08-04 05:44:37,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92426740] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:44:37,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217110743] [2023-08-04 05:44:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:44:37,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:44:37,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:44:37,375 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 05:44:37,382 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 05:44:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:44:37,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:44:37,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:44:37,496 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 05:44:37,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:44:37,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217110743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:44:37,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:44:37,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:44:37,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873329681] [2023-08-04 05:44:37,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:44:37,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:44:37,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:44:37,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:44:37,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:44:37,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 287 [2023-08-04 05:44:37,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 94 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 05:44:37,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:44:37,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 287 [2023-08-04 05:44:37,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:44:38,400 INFO L124 PetriNetUnfolderBase]: 5786/8453 cut-off events. [2023-08-04 05:44:38,400 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-04 05:44:38,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16784 conditions, 8453 events. 5786/8453 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 49229 event pairs, 4240 based on Foata normal form. 0/7390 useless extension candidates. Maximal degree in co-relation 16767. Up to 8092 conditions per place. [2023-08-04 05:44:38,444 INFO L140 encePairwiseOnDemand]: 284/287 looper letters, 34 selfloop transitions, 2 changer transitions 1/41 dead transitions. [2023-08-04 05:44:38,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 178 flow [2023-08-04 05:44:38,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:44:38,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:44:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-08-04 05:44:38,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145180023228804 [2023-08-04 05:44:38,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-08-04 05:44:38,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-08-04 05:44:38,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:44:38,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-08-04 05:44:38,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:44:38,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 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 05:44:38,451 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 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 05:44:38,451 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 94 flow. Second operand 3 states and 443 transitions. [2023-08-04 05:44:38,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 178 flow [2023-08-04 05:44:38,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:44:38,453 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 98 flow [2023-08-04 05:44:38,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-08-04 05:44:38,454 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-08-04 05:44:38,454 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 98 flow [2023-08-04 05:44:38,454 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 05:44:38,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:44:38,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:44:38,468 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 05:44:38,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:44:38,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:44:38,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:44:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1928720827, now seen corresponding path program 1 times [2023-08-04 05:44:38,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:44:38,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300908717] [2023-08-04 05:44:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:44:38,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:44:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:44:38,754 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 05:44:38,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:44:38,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300908717] [2023-08-04 05:44:38,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300908717] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:44:38,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388664479] [2023-08-04 05:44:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:44:38,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:44:38,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:44:38,760 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 05:44:38,763 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 05:44:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:44:38,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:44:38,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:44:38,881 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 05:44:38,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:44:38,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388664479] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:44:38,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:44:38,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:44:38,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702427062] [2023-08-04 05:44:38,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:44:38,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:44:38,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:44:38,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:44:38,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:44:38,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 287 [2023-08-04 05:44:38,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 98 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 05:44:38,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:44:38,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 287 [2023-08-04 05:44:38,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:44:39,645 INFO L124 PetriNetUnfolderBase]: 4940/7202 cut-off events. [2023-08-04 05:44:39,646 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-04 05:44:39,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14291 conditions, 7202 events. 4940/7202 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 40366 event pairs, 3518 based on Foata normal form. 0/6406 useless extension candidates. Maximal degree in co-relation 14274. Up to 6713 conditions per place. [2023-08-04 05:44:39,686 INFO L140 encePairwiseOnDemand]: 284/287 looper letters, 37 selfloop transitions, 2 changer transitions 1/44 dead transitions. [2023-08-04 05:44:39,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 194 flow [2023-08-04 05:44:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:44:39,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:44:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-04 05:44:39,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180023228803716 [2023-08-04 05:44:39,688 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-04 05:44:39,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-04 05:44:39,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:44:39,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-04 05:44:39,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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 05:44:39,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 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 05:44:39,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 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 05:44:39,692 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 98 flow. Second operand 3 states and 446 transitions. [2023-08-04 05:44:39,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 194 flow [2023-08-04 05:44:39,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:44:39,695 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 102 flow [2023-08-04 05:44:39,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-08-04 05:44:39,696 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-08-04 05:44:39,696 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 102 flow [2023-08-04 05:44:39,697 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 05:44:39,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:44:39,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:44:39,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 05:44:39,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-04 05:44:39,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:44:39,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:44:39,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1676222521, now seen corresponding path program 1 times [2023-08-04 05:44:39,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:44:39,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338800487] [2023-08-04 05:44:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:44:39,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:44:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:44:39,984 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 05:44:39,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:44:39,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338800487] [2023-08-04 05:44:39,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338800487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:44:39,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725475284] [2023-08-04 05:44:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:44:39,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:44:39,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:44:39,987 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 05:44:39,990 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 05:44:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:44:40,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:44:40,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:44:40,137 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 05:44:40,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:44:40,166 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 05:44:40,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725475284] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:44:40,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:44:40,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:44:40,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694377133] [2023-08-04 05:44:40,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:44:40,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:44:40,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:44:40,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:44:40,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:44:40,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 287 [2023-08-04 05:44:40,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 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 05:44:40,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:44:40,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 287 [2023-08-04 05:44:40,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:44:40,211 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 05:44:40,214 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 05:44:40,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 16 events. 4/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 1 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 05:44:40,214 INFO L140 encePairwiseOnDemand]: 284/287 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 05:44:40,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 10 transitions, 43 flow [2023-08-04 05:44:40,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:44:40,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:44:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 546 transitions. [2023-08-04 05:44:40,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2023-08-04 05:44:40,216 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 546 transitions. [2023-08-04 05:44:40,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 546 transitions. [2023-08-04 05:44:40,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:44:40,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 546 transitions. [2023-08-04 05:44:40,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.5) internal successors, (546), 4 states have internal predecessors, (546), 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 05:44:40,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 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 05:44:40,221 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 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 05:44:40,221 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 102 flow. Second operand 4 states and 546 transitions. [2023-08-04 05:44:40,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 10 transitions, 43 flow [2023-08-04 05:44:40,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:44:40,223 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-04 05:44:40,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-04 05:44:40,224 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -26 predicate places. [2023-08-04 05:44:40,224 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-04 05:44:40,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 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 05:44:40,227 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:44:40,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:44:40,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:44:40,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 05:44:40,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:44:40,436 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 05:44:40,438 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:44:40,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 156 transitions, 332 flow [2023-08-04 05:44:40,539 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-04 05:44:40,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:44:40,542 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 5806 event pairs, 0 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 546. Up to 32 conditions per place. [2023-08-04 05:44:40,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 156 transitions, 332 flow [2023-08-04 05:44:40,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 125 transitions, 270 flow [2023-08-04 05:44:40,544 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:44:40,544 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 125 transitions, 270 flow [2023-08-04 05:44:40,545 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 125 transitions, 270 flow [2023-08-04 05:44:40,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 125 transitions, 270 flow [2023-08-04 05:44:40,585 INFO L124 PetriNetUnfolderBase]: 14/437 cut-off events. [2023-08-04 05:44:40,586 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:44:40,587 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 17. Compared 2010 event pairs, 0 based on Foata normal form. 0/401 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-08-04 05:44:40,591 INFO L119 LiptonReduction]: Number of co-enabled transitions 2160 [2023-08-04 05:44:43,622 INFO L134 LiptonReduction]: Checked pairs total: 5102 [2023-08-04 05:44:43,622 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-04 05:44:43,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:44:43,624 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;@1c411570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:44:43,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:44:43,627 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:44:43,627 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 05:44:43,627 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:44:43,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:44:43,627 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:44:43,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 05:44:43,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:44:43,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1238453620, now seen corresponding path program 1 times [2023-08-04 05:44:43,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:44:43,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910994833] [2023-08-04 05:44:43,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:44:43,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:44:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:44:43,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:44:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:44:43,667 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:44:43,668 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:44:43,668 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:44:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:44:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:44:43,668 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:44:43,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 05:44:43,669 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:44:43,669 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:44:43,670 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:44:43,670 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:44:43,702 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:44:43,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 187 transitions, 422 flow [2023-08-04 05:44:44,110 INFO L124 PetriNetUnfolderBase]: 282/4351 cut-off events. [2023-08-04 05:44:44,111 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:44:44,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4640 conditions, 4351 events. 282/4351 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42448 event pairs, 0 based on Foata normal form. 0/3814 useless extension candidates. Maximal degree in co-relation 3119. Up to 162 conditions per place. [2023-08-04 05:44:44,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 187 transitions, 422 flow [2023-08-04 05:44:44,143 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 184 transitions, 404 flow [2023-08-04 05:44:44,143 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:44:44,143 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 184 transitions, 404 flow [2023-08-04 05:44:44,144 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 184 transitions, 404 flow [2023-08-04 05:44:44,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 184 transitions, 404 flow [2023-08-04 05:44:44,592 INFO L124 PetriNetUnfolderBase]: 282/4338 cut-off events. [2023-08-04 05:44:44,592 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-04 05:44:44,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4601 conditions, 4338 events. 282/4338 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42305 event pairs, 0 based on Foata normal form. 0/3801 useless extension candidates. Maximal degree in co-relation 3098. Up to 162 conditions per place. [2023-08-04 05:44:44,743 INFO L119 LiptonReduction]: Number of co-enabled transitions 9180 [2023-08-04 05:44:48,452 INFO L134 LiptonReduction]: Checked pairs total: 24903 [2023-08-04 05:44:48,453 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-04 05:44:48,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:44:48,455 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;@1c411570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:44:48,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:44:48,458 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:44:48,458 INFO L124 PetriNetUnfolderBase]: 1/33 cut-off events. [2023-08-04 05:44:48,458 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 05:44:48,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:44:48,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:44:48,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:44:48,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:44:48,459 INFO L85 PathProgramCache]: Analyzing trace with hash -672902767, now seen corresponding path program 1 times [2023-08-04 05:44:48,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:44:48,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475802557] [2023-08-04 05:44:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:44:48,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:44:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:44:48,501 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 05:44:48,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:44:48,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475802557] [2023-08-04 05:44:48,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475802557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:44:48,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:44:48,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:44:48,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126614581] [2023-08-04 05:44:48,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:44:48,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:44:48,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:44:48,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:44:48,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:44:48,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 329 [2023-08-04 05:44:48,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 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 05:44:48,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:44:48,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 329 [2023-08-04 05:44:48,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand