/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_25_stack_longest-1_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:55:13,379 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:55:13,452 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:55:13,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:55:13,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:55:13,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:55:13,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:55:13,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:55:13,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:55:13,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:55:13,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:55:13,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:55:13,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:55:13,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:55:13,491 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:55:13,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:55:13,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:55:13,492 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:55:13,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:55:13,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:55:13,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:55:13,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:55:13,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:55:13,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:55:13,495 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:55:13,495 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:55:13,495 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:55:13,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:55:13,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:55:13,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:55:13,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:55:13,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:55:13,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:55:13,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:55:13,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:55:13,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:55:13,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:55:13,498 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:55:13,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:55:13,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:55:13,499 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:55:13,499 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:55:13,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:55:13,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:55:13,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:55:13,737 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:55:13,738 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:55:13,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_25_stack_longest-1_bound2.i [2023-08-03 21:55:14,840 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:55:15,022 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:55:15,022 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_25_stack_longest-1_bound2.i [2023-08-03 21:55:15,039 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/756cc724e/c5b1ad591e544611bdd2b2975ba7080e/FLAGb4c88f4b7 [2023-08-03 21:55:15,050 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/756cc724e/c5b1ad591e544611bdd2b2975ba7080e [2023-08-03 21:55:15,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:55:15,054 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:55:15,055 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:55:15,055 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:55:15,058 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:55:15,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:55:15" (1/1) ... [2023-08-03 21:55:15,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f7ac9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15, skipping insertion in model container [2023-08-03 21:55:15,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:55:15" (1/1) ... [2023-08-03 21:55:15,093 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:55:15,332 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_25_stack_longest-1_bound2.i[31180,31193] [2023-08-03 21:55:15,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:55:15,353 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:55:15,381 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [256] [2023-08-03 21:55:15,382 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [256] [2023-08-03 21:55:15,405 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_25_stack_longest-1_bound2.i[31180,31193] [2023-08-03 21:55:15,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:55:15,445 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:55:15,445 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:55:15,451 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:55:15,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15 WrapperNode [2023-08-03 21:55:15,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:55:15,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:55:15,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:55:15,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:55:15,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15" (1/1) ... [2023-08-03 21:55:15,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15" (1/1) ... [2023-08-03 21:55:15,514 INFO L138 Inliner]: procedures = 179, calls = 36, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 179 [2023-08-03 21:55:15,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:55:15,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:55:15,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:55:15,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:55:15,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15" (1/1) ... [2023-08-03 21:55:15,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15" (1/1) ... [2023-08-03 21:55:15,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15" (1/1) ... [2023-08-03 21:55:15,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15" (1/1) ... [2023-08-03 21:55:15,550 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15" (1/1) ... [2023-08-03 21:55:15,553 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15" (1/1) ... [2023-08-03 21:55:15,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15" (1/1) ... [2023-08-03 21:55:15,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15" (1/1) ... [2023-08-03 21:55:15,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:55:15,564 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:55:15,564 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:55:15,564 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:55:15,565 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15" (1/1) ... [2023-08-03 21:55:15,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:55:15,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:55:15,610 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) [2023-08-03 21:55:15,630 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 [2023-08-03 21:55:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:55:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 21:55:15,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 21:55:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:55:15,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 21:55:15,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:55:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:55:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:55:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:55:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 21:55:15,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:55:15,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:55:15,645 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 21:55:15,767 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:55:15,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:55:16,003 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:55:16,134 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:55:16,134 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 21:55:16,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:55:16 BoogieIcfgContainer [2023-08-03 21:55:16,136 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:55:16,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:55:16,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:55:16,141 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:55:16,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:55:15" (1/3) ... [2023-08-03 21:55:16,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33837c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:55:16, skipping insertion in model container [2023-08-03 21:55:16,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:55:15" (2/3) ... [2023-08-03 21:55:16,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33837c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:55:16, skipping insertion in model container [2023-08-03 21:55:16,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:55:16" (3/3) ... [2023-08-03 21:55:16,143 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_25_stack_longest-1_bound2.i [2023-08-03 21:55:16,150 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:55:16,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:55:16,158 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:55:16,158 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:55:16,213 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:55:16,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 100 transitions, 205 flow [2023-08-03 21:55:16,296 INFO L124 PetriNetUnfolderBase]: 8/110 cut-off events. [2023-08-03 21:55:16,296 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:55:16,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 110 events. 8/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-03 21:55:16,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 100 transitions, 205 flow [2023-08-03 21:55:16,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 100 transitions, 205 flow [2023-08-03 21:55:16,307 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:55:16,319 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 100 transitions, 205 flow [2023-08-03 21:55:16,322 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 100 transitions, 205 flow [2023-08-03 21:55:16,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 100 transitions, 205 flow [2023-08-03 21:55:16,356 INFO L124 PetriNetUnfolderBase]: 8/110 cut-off events. [2023-08-03 21:55:16,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:55:16,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 110 events. 8/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-03 21:55:16,360 INFO L119 LiptonReduction]: Number of co-enabled transitions 1984 [2023-08-03 21:55:21,438 INFO L134 LiptonReduction]: Checked pairs total: 1726 [2023-08-03 21:55:21,439 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-03 21:55:21,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:55:21,455 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;@d79fc4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:55:21,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:55:21,458 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:55:21,458 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-03 21:55:21,458 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:55:21,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:21,459 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 21:55:21,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:55:21,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:21,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1092898197, now seen corresponding path program 1 times [2023-08-03 21:55:21,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:21,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075450384] [2023-08-03 21:55:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:21,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:55:21,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:55:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:55:21,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:55:21,647 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:55:21,648 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:55:21,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:55:21,652 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:55:21,654 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 21:55:21,654 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:55:21,655 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:55:21,701 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:55:21,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 163 transitions, 338 flow [2023-08-03 21:55:21,736 INFO L124 PetriNetUnfolderBase]: 15/188 cut-off events. [2023-08-03 21:55:21,736 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:55:21,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 342 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2023-08-03 21:55:21,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 163 transitions, 338 flow [2023-08-03 21:55:21,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 163 transitions, 338 flow [2023-08-03 21:55:21,739 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:55:21,739 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 163 transitions, 338 flow [2023-08-03 21:55:21,740 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 163 transitions, 338 flow [2023-08-03 21:55:21,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 163 transitions, 338 flow [2023-08-03 21:55:21,771 INFO L124 PetriNetUnfolderBase]: 15/188 cut-off events. [2023-08-03 21:55:21,771 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:55:21,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 342 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2023-08-03 21:55:21,784 INFO L119 LiptonReduction]: Number of co-enabled transitions 11780 [2023-08-03 21:55:26,093 INFO L134 LiptonReduction]: Checked pairs total: 23811 [2023-08-03 21:55:26,093 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-03 21:55:26,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:55:26,097 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;@d79fc4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:55:26,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:55:26,102 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:55:26,102 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2023-08-03 21:55:26,102 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:55:26,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:26,102 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 21:55:26,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:55:26,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:26,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1302958535, now seen corresponding path program 1 times [2023-08-03 21:55:26,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:26,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628662408] [2023-08-03 21:55:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:26,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:55:26,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:55:26,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628662408] [2023-08-03 21:55:26,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628662408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:55:26,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:55:26,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 21:55:26,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394372979] [2023-08-03 21:55:26,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:55:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:55:26,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:55:26,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:55:26,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:55:26,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 288 [2023-08-03 21:55:26,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 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) [2023-08-03 21:55:26,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:55:26,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 288 [2023-08-03 21:55:26,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:55:26,560 INFO L124 PetriNetUnfolderBase]: 934/1547 cut-off events. [2023-08-03 21:55:26,561 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-03 21:55:26,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 1547 events. 934/1547 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7715 event pairs, 0 based on Foata normal form. 0/1191 useless extension candidates. Maximal degree in co-relation 291. Up to 987 conditions per place. [2023-08-03 21:55:26,565 INFO L140 encePairwiseOnDemand]: 282/288 looper letters, 0 selfloop transitions, 0 changer transitions 101/101 dead transitions. [2023-08-03 21:55:26,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 370 flow [2023-08-03 21:55:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:55:26,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:55:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2023-08-03 21:55:26,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215277777777778 [2023-08-03 21:55:26,579 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2023-08-03 21:55:26,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2023-08-03 21:55:26,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:55:26,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2023-08-03 21:55:26,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 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) [2023-08-03 21:55:26,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 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) [2023-08-03 21:55:26,597 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 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) [2023-08-03 21:55:26,598 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 128 flow. Second operand 5 states and 751 transitions. [2023-08-03 21:55:26,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 370 flow [2023-08-03 21:55:26,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 101 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:55:26,606 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-03 21:55:26,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-08-03 21:55:26,610 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-08-03 21:55:26,611 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-03 21:55:26,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 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) [2023-08-03 21:55:26,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:55:26,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 21:55:26,612 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:55:26,614 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 21:55:26,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 163 transitions, 338 flow [2023-08-03 21:55:26,642 INFO L124 PetriNetUnfolderBase]: 15/188 cut-off events. [2023-08-03 21:55:26,646 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:55:26,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 342 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2023-08-03 21:55:26,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 163 transitions, 338 flow [2023-08-03 21:55:26,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 163 transitions, 338 flow [2023-08-03 21:55:26,649 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:55:26,649 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 163 transitions, 338 flow [2023-08-03 21:55:26,649 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 163 transitions, 338 flow [2023-08-03 21:55:26,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 163 transitions, 338 flow [2023-08-03 21:55:26,678 INFO L124 PetriNetUnfolderBase]: 15/188 cut-off events. [2023-08-03 21:55:26,678 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:55:26,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 342 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 139. Up to 6 conditions per place. [2023-08-03 21:55:26,684 INFO L119 LiptonReduction]: Number of co-enabled transitions 11780 [2023-08-03 21:55:30,929 INFO L134 LiptonReduction]: Checked pairs total: 24029 [2023-08-03 21:55:30,930 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-03 21:55:30,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:55:30,932 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;@d79fc4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:55:30,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:55:30,937 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:55:30,937 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2023-08-03 21:55:30,937 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:55:30,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:30,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:55:30,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:55:30,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:30,938 INFO L85 PathProgramCache]: Analyzing trace with hash 440453578, now seen corresponding path program 1 times [2023-08-03 21:55:30,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:30,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359459824] [2023-08-03 21:55:30,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:30,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:55:31,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:55:31,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359459824] [2023-08-03 21:55:31,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359459824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:55:31,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:55:31,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:55:31,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418225037] [2023-08-03 21:55:31,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:55:31,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 21:55:31,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:55:31,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 21:55:31,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 21:55:31,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 288 [2023-08-03 21:55:31,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 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) [2023-08-03 21:55:31,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:55:31,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 288 [2023-08-03 21:55:31,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:55:31,417 INFO L124 PetriNetUnfolderBase]: 1602/3014 cut-off events. [2023-08-03 21:55:31,417 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 21:55:31,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5429 conditions, 3014 events. 1602/3014 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 19009 event pairs, 375 based on Foata normal form. 0/2334 useless extension candidates. Maximal degree in co-relation 4815. Up to 1630 conditions per place. [2023-08-03 21:55:31,431 INFO L140 encePairwiseOnDemand]: 276/288 looper letters, 73 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2023-08-03 21:55:31,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 100 transitions, 384 flow [2023-08-03 21:55:31,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:55:31,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:55:31,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 736 transitions. [2023-08-03 21:55:31,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2023-08-03 21:55:31,434 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 736 transitions. [2023-08-03 21:55:31,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 736 transitions. [2023-08-03 21:55:31,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:55:31,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 736 transitions. [2023-08-03 21:55:31,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.2) internal successors, (736), 5 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:55:31,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 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) [2023-08-03 21:55:31,442 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 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) [2023-08-03 21:55:31,442 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 128 flow. Second operand 5 states and 736 transitions. [2023-08-03 21:55:31,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 100 transitions, 384 flow [2023-08-03 21:55:31,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 100 transitions, 382 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 21:55:31,447 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 192 flow [2023-08-03 21:55:31,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2023-08-03 21:55:31,448 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2023-08-03 21:55:31,449 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 192 flow [2023-08-03 21:55:31,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.75) internal successors, (527), 4 states have internal predecessors, (527), 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) [2023-08-03 21:55:31,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:31,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:55:31,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:55:31,450 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:55:31,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:31,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1511436345, now seen corresponding path program 1 times [2023-08-03 21:55:31,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:31,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248374832] [2023-08-03 21:55:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:31,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:55:31,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:55:31,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248374832] [2023-08-03 21:55:31,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248374832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:55:31,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:55:31,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:55:31,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299909684] [2023-08-03 21:55:31,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:55:31,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:55:31,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:55:31,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:55:31,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:55:31,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 288 [2023-08-03 21:55:31,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2023-08-03 21:55:31,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:55:31,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 288 [2023-08-03 21:55:31,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:55:31,855 INFO L124 PetriNetUnfolderBase]: 2041/3729 cut-off events. [2023-08-03 21:55:31,855 INFO L125 PetriNetUnfolderBase]: For 1024/1046 co-relation queries the response was YES. [2023-08-03 21:55:31,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7707 conditions, 3729 events. 2041/3729 cut-off events. For 1024/1046 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 23927 event pairs, 427 based on Foata normal form. 94/3206 useless extension candidates. Maximal degree in co-relation 4107. Up to 2543 conditions per place. [2023-08-03 21:55:31,878 INFO L140 encePairwiseOnDemand]: 283/288 looper letters, 58 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-03 21:55:31,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 387 flow [2023-08-03 21:55:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:55:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:55:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-03 21:55:31,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289351851851852 [2023-08-03 21:55:31,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-03 21:55:31,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-03 21:55:31,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:55:31,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-03 21:55:31,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 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) [2023-08-03 21:55:31,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-08-03 21:55:31,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-08-03 21:55:31,884 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 192 flow. Second operand 3 states and 457 transitions. [2023-08-03 21:55:31,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 387 flow [2023-08-03 21:55:31,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 387 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:55:31,888 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 213 flow [2023-08-03 21:55:31,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-08-03 21:55:31,889 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2023-08-03 21:55:31,889 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 213 flow [2023-08-03 21:55:31,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2023-08-03 21:55:31,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:31,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:55:31,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 21:55:31,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:55:31,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:31,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1011828470, now seen corresponding path program 1 times [2023-08-03 21:55:31,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:31,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480866196] [2023-08-03 21:55:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:31,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:55:31,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:55:31,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480866196] [2023-08-03 21:55:31,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480866196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:55:31,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:55:31,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 21:55:31,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029529280] [2023-08-03 21:55:31,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:55:31,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:55:31,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:55:31,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:55:31,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:55:31,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 288 [2023-08-03 21:55:31,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 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) [2023-08-03 21:55:31,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:55:31,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 288 [2023-08-03 21:55:31,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:55:32,556 INFO L124 PetriNetUnfolderBase]: 3072/5488 cut-off events. [2023-08-03 21:55:32,557 INFO L125 PetriNetUnfolderBase]: For 1503/1537 co-relation queries the response was YES. [2023-08-03 21:55:32,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11771 conditions, 5488 events. 3072/5488 cut-off events. For 1503/1537 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 35877 event pairs, 671 based on Foata normal form. 22/4559 useless extension candidates. Maximal degree in co-relation 7727. Up to 2748 conditions per place. [2023-08-03 21:55:32,591 INFO L140 encePairwiseOnDemand]: 280/288 looper letters, 114 selfloop transitions, 8 changer transitions 0/143 dead transitions. [2023-08-03 21:55:32,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 143 transitions, 698 flow [2023-08-03 21:55:32,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 21:55:32,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 21:55:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 874 transitions. [2023-08-03 21:55:32,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057870370370371 [2023-08-03 21:55:32,595 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 874 transitions. [2023-08-03 21:55:32,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 874 transitions. [2023-08-03 21:55:32,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:55:32,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 874 transitions. [2023-08-03 21:55:32,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 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) [2023-08-03 21:55:32,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 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) [2023-08-03 21:55:32,601 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 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) [2023-08-03 21:55:32,601 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 213 flow. Second operand 6 states and 874 transitions. [2023-08-03 21:55:32,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 143 transitions, 698 flow [2023-08-03 21:55:32,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 143 transitions, 694 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:55:32,605 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 258 flow [2023-08-03 21:55:32,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-08-03 21:55:32,606 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2023-08-03 21:55:32,606 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 258 flow [2023-08-03 21:55:32,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 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) [2023-08-03 21:55:32,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:32,607 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:55:32,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 21:55:32,607 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:55:32,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1614561468, now seen corresponding path program 1 times [2023-08-03 21:55:32,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:32,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65693615] [2023-08-03 21:55:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:32,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:55:32,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:55:32,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65693615] [2023-08-03 21:55:32,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65693615] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:55:32,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:55:32,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:55:32,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416493116] [2023-08-03 21:55:32,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:55:32,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:55:32,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:55:32,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:55:32,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:55:32,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-03 21:55:32,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-08-03 21:55:32,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:55:32,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-03 21:55:32,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:55:33,417 INFO L124 PetriNetUnfolderBase]: 3658/7190 cut-off events. [2023-08-03 21:55:33,417 INFO L125 PetriNetUnfolderBase]: For 2104/2138 co-relation queries the response was YES. [2023-08-03 21:55:33,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15244 conditions, 7190 events. 3658/7190 cut-off events. For 2104/2138 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 54340 event pairs, 1776 based on Foata normal form. 34/6032 useless extension candidates. Maximal degree in co-relation 10033. Up to 3604 conditions per place. [2023-08-03 21:55:33,462 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 68 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2023-08-03 21:55:33,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 497 flow [2023-08-03 21:55:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:55:33,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:55:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-08-03 21:55:33,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2023-08-03 21:55:33,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-08-03 21:55:33,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-08-03 21:55:33,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:55:33,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-08-03 21:55:33,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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) [2023-08-03 21:55:33,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-08-03 21:55:33,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-08-03 21:55:33,468 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 258 flow. Second operand 3 states and 465 transitions. [2023-08-03 21:55:33,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 497 flow [2023-08-03 21:55:33,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:55:33,476 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 269 flow [2023-08-03 21:55:33,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2023-08-03 21:55:33,478 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-08-03 21:55:33,479 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 269 flow [2023-08-03 21:55:33,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-08-03 21:55:33,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:33,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:55:33,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 21:55:33,479 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:55:33,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -547698110, now seen corresponding path program 1 times [2023-08-03 21:55:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:33,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770992903] [2023-08-03 21:55:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:33,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:33,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:55:33,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:55:33,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770992903] [2023-08-03 21:55:33,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770992903] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:55:33,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:55:33,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:55:33,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757489615] [2023-08-03 21:55:33,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:55:33,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 21:55:33,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:55:33,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 21:55:33,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 21:55:33,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 288 [2023-08-03 21:55:33,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 269 flow. Second operand has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 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) [2023-08-03 21:55:33,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:55:33,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 288 [2023-08-03 21:55:33,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:55:34,686 INFO L124 PetriNetUnfolderBase]: 6754/12574 cut-off events. [2023-08-03 21:55:34,687 INFO L125 PetriNetUnfolderBase]: For 3186/3212 co-relation queries the response was YES. [2023-08-03 21:55:34,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27614 conditions, 12574 events. 6754/12574 cut-off events. For 3186/3212 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 95992 event pairs, 1508 based on Foata normal form. 74/11118 useless extension candidates. Maximal degree in co-relation 19015. Up to 3979 conditions per place. [2023-08-03 21:55:34,745 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 113 selfloop transitions, 9 changer transitions 2/151 dead transitions. [2023-08-03 21:55:34,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 151 transitions, 766 flow [2023-08-03 21:55:34,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:55:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:55:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 753 transitions. [2023-08-03 21:55:34,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229166666666667 [2023-08-03 21:55:34,748 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 753 transitions. [2023-08-03 21:55:34,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 753 transitions. [2023-08-03 21:55:34,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:55:34,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 753 transitions. [2023-08-03 21:55:34,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 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) [2023-08-03 21:55:34,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 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) [2023-08-03 21:55:34,753 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 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) [2023-08-03 21:55:34,753 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 269 flow. Second operand 5 states and 753 transitions. [2023-08-03 21:55:34,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 151 transitions, 766 flow [2023-08-03 21:55:34,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 151 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:55:34,765 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 345 flow [2023-08-03 21:55:34,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2023-08-03 21:55:34,766 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2023-08-03 21:55:34,766 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 345 flow [2023-08-03 21:55:34,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.25) internal successors, (525), 4 states have internal predecessors, (525), 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) [2023-08-03 21:55:34,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:34,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:55:34,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 21:55:34,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:55:34,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:34,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1098237715, now seen corresponding path program 1 times [2023-08-03 21:55:34,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:34,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366819223] [2023-08-03 21:55:34,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:34,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:55:34,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:55:34,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366819223] [2023-08-03 21:55:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366819223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:55:34,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:55:34,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:55:34,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389228493] [2023-08-03 21:55:34,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:55:34,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 21:55:34,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:55:34,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 21:55:34,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 21:55:34,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 288 [2023-08-03 21:55:34,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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) [2023-08-03 21:55:34,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:55:34,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 288 [2023-08-03 21:55:34,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:55:36,299 INFO L124 PetriNetUnfolderBase]: 9474/17914 cut-off events. [2023-08-03 21:55:36,299 INFO L125 PetriNetUnfolderBase]: For 11146/11296 co-relation queries the response was YES. [2023-08-03 21:55:36,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42197 conditions, 17914 events. 9474/17914 cut-off events. For 11146/11296 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 145295 event pairs, 2211 based on Foata normal form. 322/16670 useless extension candidates. Maximal degree in co-relation 25972. Up to 5502 conditions per place. [2023-08-03 21:55:36,363 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 90 selfloop transitions, 11 changer transitions 40/168 dead transitions. [2023-08-03 21:55:36,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 168 transitions, 1001 flow [2023-08-03 21:55:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:55:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:55:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 745 transitions. [2023-08-03 21:55:36,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2023-08-03 21:55:36,366 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 745 transitions. [2023-08-03 21:55:36,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 745 transitions. [2023-08-03 21:55:36,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:55:36,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 745 transitions. [2023-08-03 21:55:36,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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) [2023-08-03 21:55:36,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 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) [2023-08-03 21:55:36,371 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 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) [2023-08-03 21:55:36,371 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 345 flow. Second operand 5 states and 745 transitions. [2023-08-03 21:55:36,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 168 transitions, 1001 flow [2023-08-03 21:55:36,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 168 transitions, 989 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-03 21:55:36,385 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 429 flow [2023-08-03 21:55:36,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2023-08-03 21:55:36,386 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 34 predicate places. [2023-08-03 21:55:36,386 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 429 flow [2023-08-03 21:55:36,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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) [2023-08-03 21:55:36,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:36,387 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:55:36,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 21:55:36,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:55:36,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:36,387 INFO L85 PathProgramCache]: Analyzing trace with hash 762873939, now seen corresponding path program 1 times [2023-08-03 21:55:36,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:36,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363024543] [2023-08-03 21:55:36,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:36,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:55:36,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:55:36,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363024543] [2023-08-03 21:55:36,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363024543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:55:36,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:55:36,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:55:36,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337512253] [2023-08-03 21:55:36,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:55:36,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 21:55:36,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:55:36,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 21:55:36,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 21:55:36,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 288 [2023-08-03 21:55:36,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 429 flow. Second operand has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 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) [2023-08-03 21:55:36,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:55:36,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 288 [2023-08-03 21:55:36,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:55:38,214 INFO L124 PetriNetUnfolderBase]: 11088/20164 cut-off events. [2023-08-03 21:55:38,215 INFO L125 PetriNetUnfolderBase]: For 18520/18604 co-relation queries the response was YES. [2023-08-03 21:55:38,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52171 conditions, 20164 events. 11088/20164 cut-off events. For 18520/18604 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 157141 event pairs, 1367 based on Foata normal form. 256/18682 useless extension candidates. Maximal degree in co-relation 26217. Up to 14221 conditions per place. [2023-08-03 21:55:38,326 INFO L140 encePairwiseOnDemand]: 283/288 looper letters, 102 selfloop transitions, 5 changer transitions 5/139 dead transitions. [2023-08-03 21:55:38,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 139 transitions, 905 flow [2023-08-03 21:55:38,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:55:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:55:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 618 transitions. [2023-08-03 21:55:38,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2023-08-03 21:55:38,328 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 618 transitions. [2023-08-03 21:55:38,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 618 transitions. [2023-08-03 21:55:38,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:55:38,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 618 transitions. [2023-08-03 21:55:38,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 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) [2023-08-03 21:55:38,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 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) [2023-08-03 21:55:38,333 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 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) [2023-08-03 21:55:38,333 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 429 flow. Second operand 4 states and 618 transitions. [2023-08-03 21:55:38,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 139 transitions, 905 flow [2023-08-03 21:55:38,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 139 transitions, 905 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:55:38,358 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 453 flow [2023-08-03 21:55:38,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=453, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2023-08-03 21:55:38,359 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2023-08-03 21:55:38,360 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 453 flow [2023-08-03 21:55:38,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 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) [2023-08-03 21:55:38,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:38,360 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:55:38,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 21:55:38,360 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:55:38,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:38,361 INFO L85 PathProgramCache]: Analyzing trace with hash 314995957, now seen corresponding path program 1 times [2023-08-03 21:55:38,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:38,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741920460] [2023-08-03 21:55:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:55:38,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:55:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741920460] [2023-08-03 21:55:38,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741920460] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:55:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390609690] [2023-08-03 21:55:38,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:38,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:55:38,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:55:38,655 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) [2023-08-03 21:55:38,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 21:55:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:38,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-03 21:55:38,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:55:38,940 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 21:55:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:55:38,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:55:38,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390609690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:55:38,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:55:38,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-08-03 21:55:38,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94163849] [2023-08-03 21:55:38,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:55:38,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 21:55:38,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:55:38,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 21:55:39,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-03 21:55:39,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 288 [2023-08-03 21:55:39,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 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) [2023-08-03 21:55:39,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:55:39,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 288 [2023-08-03 21:55:39,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:55:40,896 INFO L124 PetriNetUnfolderBase]: 11077/20078 cut-off events. [2023-08-03 21:55:40,896 INFO L125 PetriNetUnfolderBase]: For 21951/22091 co-relation queries the response was YES. [2023-08-03 21:55:40,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54221 conditions, 20078 events. 11077/20078 cut-off events. For 21951/22091 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 155511 event pairs, 2669 based on Foata normal form. 40/18323 useless extension candidates. Maximal degree in co-relation 37024. Up to 15856 conditions per place. [2023-08-03 21:55:40,986 INFO L140 encePairwiseOnDemand]: 280/288 looper letters, 83 selfloop transitions, 11 changer transitions 1/122 dead transitions. [2023-08-03 21:55:40,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 122 transitions, 818 flow [2023-08-03 21:55:40,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:55:40,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:55:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 599 transitions. [2023-08-03 21:55:40,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5199652777777778 [2023-08-03 21:55:40,988 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 599 transitions. [2023-08-03 21:55:40,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 599 transitions. [2023-08-03 21:55:40,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:55:40,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 599 transitions. [2023-08-03 21:55:40,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 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) [2023-08-03 21:55:40,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 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) [2023-08-03 21:55:40,992 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 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) [2023-08-03 21:55:40,992 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 453 flow. Second operand 4 states and 599 transitions. [2023-08-03 21:55:40,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 122 transitions, 818 flow [2023-08-03 21:55:41,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 122 transitions, 806 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 21:55:41,015 INFO L231 Difference]: Finished difference. Result has 93 places, 95 transitions, 531 flow [2023-08-03 21:55:41,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=531, PETRI_PLACES=93, PETRI_TRANSITIONS=95} [2023-08-03 21:55:41,016 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2023-08-03 21:55:41,016 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 95 transitions, 531 flow [2023-08-03 21:55:41,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 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) [2023-08-03 21:55:41,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:41,016 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:55:41,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 21:55:41,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 21:55:41,222 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:55:41,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:41,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1219336998, now seen corresponding path program 1 times [2023-08-03 21:55:41,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:41,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599562505] [2023-08-03 21:55:41,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:41,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:55:41,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:55:41,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599562505] [2023-08-03 21:55:41,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599562505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:55:41,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:55:41,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:55:41,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772179456] [2023-08-03 21:55:41,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:55:41,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:55:41,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:55:41,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:55:41,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:55:41,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-03 21:55:41,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 95 transitions, 531 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) [2023-08-03 21:55:41,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:55:41,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-03 21:55:41,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:55:43,607 INFO L124 PetriNetUnfolderBase]: 11536/22735 cut-off events. [2023-08-03 21:55:43,607 INFO L125 PetriNetUnfolderBase]: For 23722/24388 co-relation queries the response was YES. [2023-08-03 21:55:43,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60640 conditions, 22735 events. 11536/22735 cut-off events. For 23722/24388 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 196421 event pairs, 5157 based on Foata normal form. 155/22390 useless extension candidates. Maximal degree in co-relation 41137. Up to 11460 conditions per place. [2023-08-03 21:55:43,701 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 87 selfloop transitions, 3 changer transitions 1/128 dead transitions. [2023-08-03 21:55:43,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 128 transitions, 868 flow [2023-08-03 21:55:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:55:43,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:55:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-08-03 21:55:43,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2023-08-03 21:55:43,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-08-03 21:55:43,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-08-03 21:55:43,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:55:43,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-08-03 21:55:43,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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) [2023-08-03 21:55:43,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-08-03 21:55:43,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-08-03 21:55:43,706 INFO L175 Difference]: Start difference. First operand has 93 places, 95 transitions, 531 flow. Second operand 3 states and 465 transitions. [2023-08-03 21:55:43,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 128 transitions, 868 flow [2023-08-03 21:55:43,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 128 transitions, 863 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:55:43,736 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 564 flow [2023-08-03 21:55:43,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=564, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2023-08-03 21:55:43,738 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2023-08-03 21:55:43,738 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 564 flow [2023-08-03 21:55:43,739 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) [2023-08-03 21:55:43,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:43,739 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:55:43,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 21:55:43,739 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:55:43,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2134391673, now seen corresponding path program 2 times [2023-08-03 21:55:43,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:43,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875740599] [2023-08-03 21:55:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:43,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:55:43,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:55:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875740599] [2023-08-03 21:55:43,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875740599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:55:43,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:55:43,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:55:43,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705683822] [2023-08-03 21:55:43,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:55:43,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:55:43,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:55:43,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:55:43,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:55:43,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-03 21:55:43,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 564 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-03 21:55:43,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:55:43,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-03 21:55:43,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:55:46,194 INFO L124 PetriNetUnfolderBase]: 11819/22933 cut-off events. [2023-08-03 21:55:46,195 INFO L125 PetriNetUnfolderBase]: For 27082/27715 co-relation queries the response was YES. [2023-08-03 21:55:46,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62574 conditions, 22933 events. 11819/22933 cut-off events. For 27082/27715 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 194921 event pairs, 3366 based on Foata normal form. 158/22593 useless extension candidates. Maximal degree in co-relation 42519. Up to 16460 conditions per place. [2023-08-03 21:55:46,276 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 65 selfloop transitions, 3 changer transitions 6/105 dead transitions. [2023-08-03 21:55:46,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 105 transitions, 745 flow [2023-08-03 21:55:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:55:46,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:55:46,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-08-03 21:55:46,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2023-08-03 21:55:46,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-08-03 21:55:46,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-08-03 21:55:46,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:55:46,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-08-03 21:55:46,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:55:46,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-08-03 21:55:46,283 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 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) [2023-08-03 21:55:46,283 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 564 flow. Second operand 3 states and 450 transitions. [2023-08-03 21:55:46,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 105 transitions, 745 flow [2023-08-03 21:55:46,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 105 transitions, 739 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:55:46,325 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 526 flow [2023-08-03 21:55:46,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2023-08-03 21:55:46,326 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2023-08-03 21:55:46,326 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 526 flow [2023-08-03 21:55:46,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-03 21:55:46,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:46,326 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:55:46,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 21:55:46,327 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:55:46,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:46,327 INFO L85 PathProgramCache]: Analyzing trace with hash -327263421, now seen corresponding path program 1 times [2023-08-03 21:55:46,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:46,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5230662] [2023-08-03 21:55:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:46,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:46,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:55:46,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:55:46,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5230662] [2023-08-03 21:55:46,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5230662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:55:46,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:55:46,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-03 21:55:46,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053599100] [2023-08-03 21:55:46,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:55:46,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 21:55:46,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:55:46,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 21:55:46,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:55:46,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 288 [2023-08-03 21:55:46,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 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) [2023-08-03 21:55:46,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:55:46,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 288 [2023-08-03 21:55:46,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:55:48,933 INFO L124 PetriNetUnfolderBase]: 11814/23273 cut-off events. [2023-08-03 21:55:48,933 INFO L125 PetriNetUnfolderBase]: For 25342/25895 co-relation queries the response was YES. [2023-08-03 21:55:48,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62242 conditions, 23273 events. 11814/23273 cut-off events. For 25342/25895 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 200596 event pairs, 2181 based on Foata normal form. 212/23098 useless extension candidates. Maximal degree in co-relation 27052. Up to 9622 conditions per place. [2023-08-03 21:55:49,005 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 84 selfloop transitions, 5 changer transitions 48/164 dead transitions. [2023-08-03 21:55:49,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 164 transitions, 1113 flow [2023-08-03 21:55:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 21:55:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 21:55:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 849 transitions. [2023-08-03 21:55:49,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4913194444444444 [2023-08-03 21:55:49,007 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 849 transitions. [2023-08-03 21:55:49,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 849 transitions. [2023-08-03 21:55:49,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:55:49,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 849 transitions. [2023-08-03 21:55:49,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 141.5) internal successors, (849), 6 states have internal predecessors, (849), 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) [2023-08-03 21:55:49,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 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) [2023-08-03 21:55:49,012 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 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) [2023-08-03 21:55:49,012 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 526 flow. Second operand 6 states and 849 transitions. [2023-08-03 21:55:49,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 164 transitions, 1113 flow [2023-08-03 21:55:49,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 164 transitions, 1110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:55:49,038 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 455 flow [2023-08-03 21:55:49,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=455, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2023-08-03 21:55:49,038 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2023-08-03 21:55:49,038 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 455 flow [2023-08-03 21:55:49,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 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) [2023-08-03 21:55:49,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:55:49,039 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:55:49,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 21:55:49,039 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:55:49,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:55:49,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2030501349, now seen corresponding path program 3 times [2023-08-03 21:55:49,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:55:49,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111085992] [2023-08-03 21:55:49,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:55:49,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:55:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:55:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:55:49,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:55:49,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111085992] [2023-08-03 21:55:49,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111085992] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:55:49,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390210809] [2023-08-03 21:55:49,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 21:55:49,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:55:49,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:55:49,331 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) [2023-08-03 21:55:49,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 21:55:49,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-03 21:55:49,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:55:49,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-03 21:55:49,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:55:49,477 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 21:55:49,477 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-03 21:55:49,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 21:55:49,561 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 21:55:49,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:55:49,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:55:49,651 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 21:55:49,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-08-03 21:55:49,657 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-08-03 21:55:49,662 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-03 21:55:49,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:55:49,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390210809] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:55:49,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:55:49,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2023-08-03 21:55:49,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473192112] [2023-08-03 21:55:49,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:55:49,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-03 21:55:49,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:55:49,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-03 21:55:49,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=142, Unknown=3, NotChecked=0, Total=182 [2023-08-03 21:55:49,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 288 [2023-08-03 21:55:49,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 455 flow. Second operand has 14 states, 14 states have (on average 117.28571428571429) internal successors, (1642), 14 states have internal predecessors, (1642), 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) [2023-08-03 21:55:49,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:55:49,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 288 [2023-08-03 21:55:49,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:55:50,237 INFO L124 PetriNetUnfolderBase]: 352/882 cut-off events. [2023-08-03 21:55:50,238 INFO L125 PetriNetUnfolderBase]: For 958/965 co-relation queries the response was YES. [2023-08-03 21:55:50,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2680 conditions, 882 events. 352/882 cut-off events. For 958/965 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4415 event pairs, 25 based on Foata normal form. 30/911 useless extension candidates. Maximal degree in co-relation 2654. Up to 375 conditions per place. [2023-08-03 21:55:50,241 INFO L140 encePairwiseOnDemand]: 277/288 looper letters, 0 selfloop transitions, 0 changer transitions 112/112 dead transitions. [2023-08-03 21:55:50,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 112 transitions, 787 flow [2023-08-03 21:55:50,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 21:55:50,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 21:55:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1453 transitions. [2023-08-03 21:55:50,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42042824074074076 [2023-08-03 21:55:50,245 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1453 transitions. [2023-08-03 21:55:50,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1453 transitions. [2023-08-03 21:55:50,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:55:50,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1453 transitions. [2023-08-03 21:55:50,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 121.08333333333333) internal successors, (1453), 12 states have internal predecessors, (1453), 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) [2023-08-03 21:55:50,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 288.0) internal successors, (3744), 13 states have internal predecessors, (3744), 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) [2023-08-03 21:55:50,253 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 288.0) internal successors, (3744), 13 states have internal predecessors, (3744), 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) [2023-08-03 21:55:50,253 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 455 flow. Second operand 12 states and 1453 transitions. [2023-08-03 21:55:50,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 112 transitions, 787 flow [2023-08-03 21:55:50,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 112 transitions, 715 flow, removed 18 selfloop flow, removed 11 redundant places. [2023-08-03 21:55:50,257 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2023-08-03 21:55:50,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2023-08-03 21:55:50,258 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2023-08-03 21:55:50,258 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2023-08-03 21:55:50,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.28571428571429) internal successors, (1642), 14 states have internal predecessors, (1642), 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) [2023-08-03 21:55:50,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 21:55:50,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 21:55:50,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 21:55:50,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 21:55:50,464 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,SelfDestructingSolverStorable13 [2023-08-03 21:55:50,465 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:55:50,465 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (2/2) [2023-08-03 21:55:50,467 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:55:50,467 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:55:50,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:55:50 BasicIcfg [2023-08-03 21:55:50,470 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:55:50,471 INFO L158 Benchmark]: Toolchain (without parser) took 35416.89ms. Allocated memory was 364.9MB in the beginning and 6.5GB in the end (delta: 6.1GB). Free memory was 318.0MB in the beginning and 5.3GB in the end (delta: -4.9GB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2023-08-03 21:55:50,471 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 364.9MB. Free memory is still 313.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:55:50,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.75ms. Allocated memory is still 364.9MB. Free memory was 318.0MB in the beginning and 297.1MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 21:55:50,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.30ms. Allocated memory is still 364.9MB. Free memory was 297.1MB in the beginning and 295.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:55:50,471 INFO L158 Benchmark]: Boogie Preprocessor took 48.56ms. Allocated memory is still 364.9MB. Free memory was 295.0MB in the beginning and 292.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:55:50,472 INFO L158 Benchmark]: RCFGBuilder took 572.38ms. Allocated memory is still 364.9MB. Free memory was 292.9MB in the beginning and 255.2MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-03 21:55:50,472 INFO L158 Benchmark]: TraceAbstraction took 34331.99ms. Allocated memory was 364.9MB in the beginning and 6.5GB in the end (delta: 6.1GB). Free memory was 255.2MB in the beginning and 5.3GB in the end (delta: -5.0GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-08-03 21:55:50,473 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 364.9MB. Free memory is still 313.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 397.75ms. Allocated memory is still 364.9MB. Free memory was 318.0MB in the beginning and 297.1MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 61.30ms. Allocated memory is still 364.9MB. Free memory was 297.1MB in the beginning and 295.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 48.56ms. Allocated memory is still 364.9MB. Free memory was 295.0MB in the beginning and 292.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 572.38ms. Allocated memory is still 364.9MB. Free memory was 292.9MB in the beginning and 255.2MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * TraceAbstraction took 34331.99ms. Allocated memory was 364.9MB in the beginning and 6.5GB in the end (delta: 6.1GB). Free memory was 255.2MB in the beginning and 5.3GB in the end (delta: -5.0GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 256]: Unsoundness Warning unspecified type, defaulting to int C: short [256] - GenericResultAtLocation [Line: 256]: Unsoundness Warning unspecified type, defaulting to int C: short [256] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 96 PlacesBefore, 17 PlacesAfterwards, 100 TransitionsBefore, 17 TransitionsAfterwards, 1984 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 99 TotalNumberOfCompositions, 1726 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1518, independent: 1471, independent conditional: 0, independent unconditional: 1471, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1073, independent: 1049, independent conditional: 0, independent unconditional: 1049, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1518, independent: 422, independent conditional: 0, independent unconditional: 422, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 1073, unknown conditional: 0, unknown unconditional: 1073] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 155 PlacesBefore, 53 PlacesAfterwards, 163 TransitionsBefore, 58 TransitionsAfterwards, 11780 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 79 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 3 ChoiceCompositions, 125 TotalNumberOfCompositions, 23811 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10674, independent: 10291, independent conditional: 0, independent unconditional: 10291, dependent: 383, dependent conditional: 0, dependent unconditional: 383, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5875, independent: 5809, independent conditional: 0, independent unconditional: 5809, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10674, independent: 4482, independent conditional: 0, independent unconditional: 4482, dependent: 317, dependent conditional: 0, dependent unconditional: 317, unknown: 5875, unknown conditional: 0, unknown unconditional: 5875] , Statistics on independence cache: Total cache size (in pairs): 358, Positive cache size: 326, Positive conditional cache size: 0, Positive unconditional cache size: 326, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 155 PlacesBefore, 53 PlacesAfterwards, 163 TransitionsBefore, 58 TransitionsAfterwards, 11780 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 79 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 3 ChoiceCompositions, 125 TotalNumberOfCompositions, 24029 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11676, independent: 11289, independent conditional: 0, independent unconditional: 11289, dependent: 387, dependent conditional: 0, dependent unconditional: 387, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5966, independent: 5898, independent conditional: 0, independent unconditional: 5898, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11676, independent: 5391, independent conditional: 0, independent unconditional: 5391, dependent: 319, dependent conditional: 0, dependent unconditional: 319, unknown: 5966, unknown conditional: 0, unknown unconditional: 5966] , Statistics on independence cache: Total cache size (in pairs): 414, Positive cache size: 381, Positive conditional cache size: 0, Positive unconditional cache size: 381, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 749]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 151 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 208 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 208 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.8s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 17.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 953 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 802 mSDsluCounter, 513 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 444 mSDsCounter, 80 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2371 IncrementalHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 80 mSolverCounterUnsat, 69 mSDtfsCounter, 2371 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=564occurred in iteration=9, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 343 ConstructedInterpolants, 3 QuantifiedInterpolants, 1043 SizeOfPredicates, 10 NumberOfNonLiveVariables, 586 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 17/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 21:55:50,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...