/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_25_stack_longer-2_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:22:24,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:22:24,250 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:22:24,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:22:24,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:22:24,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:22:24,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:22:24,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:22:24,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:22:24,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:22:24,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:22:24,288 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:22:24,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:22:24,289 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:22:24,289 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:22:24,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:22:24,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:22:24,290 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:22:24,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:22:24,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:22:24,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:22:24,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:22:24,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:22:24,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:22:24,291 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:22:24,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:22:24,293 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:22:24,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:22:24,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:22:24,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:22:24,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:22:24,295 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:22:24,295 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:22:24,295 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:22:24,295 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:22:24,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:22:24,296 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:22:24,296 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:22:24,296 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:22:24,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:22:24,296 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:22:24,296 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:22:24,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:22:24,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:22:24,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:22:24,560 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:22:24,560 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:22:24,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_25_stack_longer-2_bound2.i [2023-08-04 04:22:25,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:22:26,057 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:22:26,058 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_25_stack_longer-2_bound2.i [2023-08-04 04:22:26,084 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa6eff6a8/628015e8692e4b7da157dfbf76cf2bcb/FLAG663965b99 [2023-08-04 04:22:26,096 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa6eff6a8/628015e8692e4b7da157dfbf76cf2bcb [2023-08-04 04:22:26,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:22:26,100 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:22:26,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:22:26,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:22:26,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:22:26,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:22:26" (1/1) ... [2023-08-04 04:22:26,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75437b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26, skipping insertion in model container [2023-08-04 04:22:26,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:22:26" (1/1) ... [2023-08-04 04:22:26,149 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:22:26,459 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_longer-2_bound2.i[31179,31192] [2023-08-04 04:22:26,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:22:26,488 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:22:26,519 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [256] [2023-08-04 04:22:26,521 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [256] [2023-08-04 04:22:26,545 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_longer-2_bound2.i[31179,31192] [2023-08-04 04:22:26,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:22:26,577 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:22:26,577 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:22:26,584 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:22:26,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26 WrapperNode [2023-08-04 04:22:26,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:22:26,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:22:26,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:22:26,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:22:26,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26" (1/1) ... [2023-08-04 04:22:26,605 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26" (1/1) ... [2023-08-04 04:22:26,629 INFO L138 Inliner]: procedures = 179, calls = 36, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 179 [2023-08-04 04:22:26,629 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:22:26,630 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:22:26,630 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:22:26,630 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:22:26,639 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26" (1/1) ... [2023-08-04 04:22:26,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26" (1/1) ... [2023-08-04 04:22:26,642 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26" (1/1) ... [2023-08-04 04:22:26,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26" (1/1) ... [2023-08-04 04:22:26,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26" (1/1) ... [2023-08-04 04:22:26,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26" (1/1) ... [2023-08-04 04:22:26,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26" (1/1) ... [2023-08-04 04:22:26,658 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26" (1/1) ... [2023-08-04 04:22:26,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:22:26,663 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:22:26,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:22:26,663 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:22:26,664 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26" (1/1) ... [2023-08-04 04:22:26,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:22:26,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:22:26,694 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 04:22:26,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 04:22:26,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:22:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-04 04:22:26,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-04 04:22:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:22:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 04:22:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:22:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:22:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:22:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:22:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 04:22:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:22:26,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:22:26,752 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:22:26,896 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:22:26,900 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:22:27,260 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:22:27,405 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:22:27,405 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 04:22:27,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:22:27 BoogieIcfgContainer [2023-08-04 04:22:27,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:22:27,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:22:27,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:22:27,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:22:27,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:22:26" (1/3) ... [2023-08-04 04:22:27,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188033c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:22:27, skipping insertion in model container [2023-08-04 04:22:27,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:22:26" (2/3) ... [2023-08-04 04:22:27,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188033c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:22:27, skipping insertion in model container [2023-08-04 04:22:27,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:22:27" (3/3) ... [2023-08-04 04:22:27,415 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_25_stack_longer-2_bound2.i [2023-08-04 04:22:27,422 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:22:27,430 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:22:27,430 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:22:27,431 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:22:27,503 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:22:27,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 100 transitions, 205 flow [2023-08-04 04:22:27,602 INFO L124 PetriNetUnfolderBase]: 8/110 cut-off events. [2023-08-04 04:22:27,602 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:22:27,608 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. [2023-08-04 04:22:27,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 100 transitions, 205 flow [2023-08-04 04:22:27,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 100 transitions, 205 flow [2023-08-04 04:22:27,616 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:22:27,625 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 100 transitions, 205 flow [2023-08-04 04:22:27,627 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 100 transitions, 205 flow [2023-08-04 04:22:27,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 100 transitions, 205 flow [2023-08-04 04:22:27,654 INFO L124 PetriNetUnfolderBase]: 8/110 cut-off events. [2023-08-04 04:22:27,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:22:27,655 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. [2023-08-04 04:22:27,657 INFO L119 LiptonReduction]: Number of co-enabled transitions 1984 [2023-08-04 04:22:32,738 INFO L134 LiptonReduction]: Checked pairs total: 1726 [2023-08-04 04:22:32,738 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-04 04:22:32,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:22:32,769 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;@2759fa3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:22:32,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:22:32,776 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:22:32,777 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2023-08-04 04:22:32,777 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:22:32,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:32,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:22:32,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:22:32,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:32,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2003785546, now seen corresponding path program 1 times [2023-08-04 04:22:32,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:32,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649795446] [2023-08-04 04:22:32,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:32,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:22:33,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:22:33,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649795446] [2023-08-04 04:22:33,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649795446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:22:33,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:22:33,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:22:33,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811169324] [2023-08-04 04:22:33,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:22:33,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:22:33,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:22:33,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:22:33,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:22:33,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 199 [2023-08-04 04:22:33,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 17 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:33,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:22:33,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 199 [2023-08-04 04:22:33,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:22:33,268 INFO L124 PetriNetUnfolderBase]: 51/111 cut-off events. [2023-08-04 04:22:33,268 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:22:33,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 111 events. 51/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 292 event pairs, 24 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 212. Up to 72 conditions per place. [2023-08-04 04:22:33,292 INFO L140 encePairwiseOnDemand]: 195/199 looper letters, 21 selfloop transitions, 2 changer transitions 1/25 dead transitions. [2023-08-04 04:22:33,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 25 transitions, 103 flow [2023-08-04 04:22:33,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:22:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:22:33,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2023-08-04 04:22:33,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46733668341708545 [2023-08-04 04:22:33,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2023-08-04 04:22:33,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2023-08-04 04:22:33,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:22:33,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2023-08-04 04:22:33,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:33,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:33,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:33,335 INFO L175 Difference]: Start difference. First operand has 17 places, 17 transitions, 39 flow. Second operand 3 states and 279 transitions. [2023-08-04 04:22:33,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 25 transitions, 103 flow [2023-08-04 04:22:33,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 25 transitions, 103 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:22:33,340 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 53 flow [2023-08-04 04:22:33,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-08-04 04:22:33,345 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 4 predicate places. [2023-08-04 04:22:33,346 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 53 flow [2023-08-04 04:22:33,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:33,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:33,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:22:33,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:22:33,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:22:33,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1492585613, now seen corresponding path program 1 times [2023-08-04 04:22:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:33,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54741229] [2023-08-04 04:22:33,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:33,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:33,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:22:33,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:22:33,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54741229] [2023-08-04 04:22:33,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54741229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:22:33,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:22:33,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:22:33,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065092783] [2023-08-04 04:22:33,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:22:33,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:22:33,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:22:33,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:22:33,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:22:33,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 199 [2023-08-04 04:22:33,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:33,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:22:33,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 199 [2023-08-04 04:22:33,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:22:33,498 INFO L124 PetriNetUnfolderBase]: 74/154 cut-off events. [2023-08-04 04:22:33,499 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-04 04:22:33,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 154 events. 74/154 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 389 event pairs, 24 based on Foata normal form. 4/138 useless extension candidates. Maximal degree in co-relation 334. Up to 86 conditions per place. [2023-08-04 04:22:33,500 INFO L140 encePairwiseOnDemand]: 197/199 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-08-04 04:22:33,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 25 transitions, 121 flow [2023-08-04 04:22:33,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:22:33,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:22:33,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2023-08-04 04:22:33,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45896147403685095 [2023-08-04 04:22:33,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2023-08-04 04:22:33,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2023-08-04 04:22:33,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:22:33,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2023-08-04 04:22:33,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:33,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:33,505 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:33,505 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 53 flow. Second operand 3 states and 274 transitions. [2023-08-04 04:22:33,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 25 transitions, 121 flow [2023-08-04 04:22:33,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 25 transitions, 115 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:22:33,507 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-04 04:22:33,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-04 04:22:33,507 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2023-08-04 04:22:33,508 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-04 04:22:33,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:33,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-04 04:22:33,511 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-04 04:22:33,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:22:33,512 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 04:22:33,513 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-08-04 04:22:33,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 100 transitions, 205 flow [2023-08-04 04:22:33,527 INFO L124 PetriNetUnfolderBase]: 8/110 cut-off events. [2023-08-04 04:22:33,528 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:22:33,528 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. [2023-08-04 04:22:33,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 100 transitions, 205 flow [2023-08-04 04:22:33,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 100 transitions, 205 flow [2023-08-04 04:22:33,529 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:22:33,529 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 100 transitions, 205 flow [2023-08-04 04:22:33,530 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 100 transitions, 205 flow [2023-08-04 04:22:33,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 100 transitions, 205 flow [2023-08-04 04:22:33,538 INFO L124 PetriNetUnfolderBase]: 8/110 cut-off events. [2023-08-04 04:22:33,538 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:22:33,539 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. [2023-08-04 04:22:33,540 INFO L119 LiptonReduction]: Number of co-enabled transitions 1984 [2023-08-04 04:22:37,559 INFO L134 LiptonReduction]: Checked pairs total: 1930 [2023-08-04 04:22:37,560 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-04 04:22:37,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:22:37,563 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;@2759fa3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:22:37,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:22:37,566 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:22:37,566 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-04 04:22:37,566 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:22:37,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:37,566 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:22:37,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:22:37,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:37,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1831991948, now seen corresponding path program 1 times [2023-08-04 04:22:37,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:37,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053461979] [2023-08-04 04:22:37,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:37,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:22:37,581 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:22:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:22:37,605 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:22:37,605 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:22:37,605 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:22:37,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:22:37,606 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:22:37,607 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:22:37,607 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:22:37,607 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:22:37,644 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:22:37,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 163 transitions, 338 flow [2023-08-04 04:22:37,676 INFO L124 PetriNetUnfolderBase]: 15/188 cut-off events. [2023-08-04 04:22:37,676 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:22:37,679 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. [2023-08-04 04:22:37,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 163 transitions, 338 flow [2023-08-04 04:22:37,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 163 transitions, 338 flow [2023-08-04 04:22:37,681 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:22:37,681 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 163 transitions, 338 flow [2023-08-04 04:22:37,682 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 163 transitions, 338 flow [2023-08-04 04:22:37,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 163 transitions, 338 flow [2023-08-04 04:22:37,706 INFO L124 PetriNetUnfolderBase]: 15/188 cut-off events. [2023-08-04 04:22:37,706 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:22:37,707 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. [2023-08-04 04:22:37,714 INFO L119 LiptonReduction]: Number of co-enabled transitions 11780 [2023-08-04 04:22:42,092 INFO L134 LiptonReduction]: Checked pairs total: 24254 [2023-08-04 04:22:42,092 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-04 04:22:42,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:22:42,095 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;@2759fa3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:22:42,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 04:22:42,100 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:22:42,100 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2023-08-04 04:22:42,100 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:22:42,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:42,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:22:42,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:22:42,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:42,101 INFO L85 PathProgramCache]: Analyzing trace with hash 59360853, now seen corresponding path program 1 times [2023-08-04 04:22:42,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:42,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137367249] [2023-08-04 04:22:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:42,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:22:42,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:22:42,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137367249] [2023-08-04 04:22:42,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137367249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:22:42,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:22:42,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:22:42,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139378178] [2023-08-04 04:22:42,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:22:42,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:22:42,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:22:42,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:22:42,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:22:42,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 288 [2023-08-04 04:22:42,208 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) [2023-08-04 04:22:42,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:22:42,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 288 [2023-08-04 04:22:42,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:22:42,588 INFO L124 PetriNetUnfolderBase]: 1602/3014 cut-off events. [2023-08-04 04:22:42,588 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 04:22:42,593 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 19002 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. [2023-08-04 04:22:42,609 INFO L140 encePairwiseOnDemand]: 276/288 looper letters, 73 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2023-08-04 04:22:42,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 100 transitions, 384 flow [2023-08-04 04:22:42,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:22:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:22:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 736 transitions. [2023-08-04 04:22:42,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2023-08-04 04:22:42,613 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 736 transitions. [2023-08-04 04:22:42,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 736 transitions. [2023-08-04 04:22:42,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:22:42,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 736 transitions. [2023-08-04 04:22:42,615 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) [2023-08-04 04:22:42,620 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) [2023-08-04 04:22:42,621 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) [2023-08-04 04:22:42,621 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 128 flow. Second operand 5 states and 736 transitions. [2023-08-04 04:22:42,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 100 transitions, 384 flow [2023-08-04 04:22:42,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 100 transitions, 382 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-04 04:22:42,625 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 192 flow [2023-08-04 04:22:42,625 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} [2023-08-04 04:22:42,627 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2023-08-04 04:22:42,627 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 192 flow [2023-08-04 04:22:42,628 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) [2023-08-04 04:22:42,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:42,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:22:42,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:22:42,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:22:42,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:42,637 INFO L85 PathProgramCache]: Analyzing trace with hash 520561106, now seen corresponding path program 1 times [2023-08-04 04:22:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:42,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610427493] [2023-08-04 04:22:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:42,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:22:42,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:22:42,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610427493] [2023-08-04 04:22:42,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610427493] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:22:42,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:22:42,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:22:42,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95293945] [2023-08-04 04:22:42,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:22:42,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:22:42,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:22:42,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:22:42,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:22:42,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 288 [2023-08-04 04:22:42,728 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) [2023-08-04 04:22:42,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:22:42,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 288 [2023-08-04 04:22:42,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:22:43,152 INFO L124 PetriNetUnfolderBase]: 2041/3729 cut-off events. [2023-08-04 04:22:43,152 INFO L125 PetriNetUnfolderBase]: For 1024/1046 co-relation queries the response was YES. [2023-08-04 04:22:43,159 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 23939 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. [2023-08-04 04:22:43,179 INFO L140 encePairwiseOnDemand]: 283/288 looper letters, 58 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-04 04:22:43,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 387 flow [2023-08-04 04:22:43,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:22:43,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:22:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-04 04:22:43,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289351851851852 [2023-08-04 04:22:43,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-04 04:22:43,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-04 04:22:43,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:22:43,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-04 04:22:43,185 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) [2023-08-04 04:22:43,187 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) [2023-08-04 04:22:43,189 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) [2023-08-04 04:22:43,189 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 192 flow. Second operand 3 states and 457 transitions. [2023-08-04 04:22:43,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 387 flow [2023-08-04 04:22:43,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 387 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:22:43,196 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 213 flow [2023-08-04 04:22:43,196 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} [2023-08-04 04:22:43,198 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2023-08-04 04:22:43,198 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 213 flow [2023-08-04 04:22:43,198 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) [2023-08-04 04:22:43,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:43,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:22:43,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:22:43,199 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:22:43,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:43,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1941852694, now seen corresponding path program 1 times [2023-08-04 04:22:43,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:43,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227590459] [2023-08-04 04:22:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:43,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:22:43,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:22:43,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227590459] [2023-08-04 04:22:43,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227590459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:22:43,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:22:43,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:22:43,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708069901] [2023-08-04 04:22:43,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:22:43,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:22:43,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:22:43,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:22:43,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:22:43,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 288 [2023-08-04 04:22:43,375 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) [2023-08-04 04:22:43,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:22:43,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 288 [2023-08-04 04:22:43,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:22:44,083 INFO L124 PetriNetUnfolderBase]: 3072/5488 cut-off events. [2023-08-04 04:22:44,084 INFO L125 PetriNetUnfolderBase]: For 1503/1537 co-relation queries the response was YES. [2023-08-04 04:22:44,096 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 229. Compared 35940 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. [2023-08-04 04:22:44,125 INFO L140 encePairwiseOnDemand]: 280/288 looper letters, 114 selfloop transitions, 8 changer transitions 0/143 dead transitions. [2023-08-04 04:22:44,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 143 transitions, 698 flow [2023-08-04 04:22:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:22:44,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:22:44,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 874 transitions. [2023-08-04 04:22:44,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057870370370371 [2023-08-04 04:22:44,128 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 874 transitions. [2023-08-04 04:22:44,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 874 transitions. [2023-08-04 04:22:44,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:22:44,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 874 transitions. [2023-08-04 04:22:44,130 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) [2023-08-04 04:22:44,133 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) [2023-08-04 04:22:44,134 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) [2023-08-04 04:22:44,134 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 213 flow. Second operand 6 states and 874 transitions. [2023-08-04 04:22:44,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 143 transitions, 698 flow [2023-08-04 04:22:44,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 143 transitions, 694 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:22:44,141 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 258 flow [2023-08-04 04:22:44,141 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} [2023-08-04 04:22:44,143 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2023-08-04 04:22:44,143 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 258 flow [2023-08-04 04:22:44,144 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) [2023-08-04 04:22:44,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:44,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:22:44,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:22:44,145 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:22:44,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:44,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1835496037, now seen corresponding path program 1 times [2023-08-04 04:22:44,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:44,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964340691] [2023-08-04 04:22:44,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:44,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:22:44,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:22:44,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964340691] [2023-08-04 04:22:44,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964340691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:22:44,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:22:44,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:22:44,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517871577] [2023-08-04 04:22:44,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:22:44,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:22:44,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:22:44,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:22:44,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:22:44,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 288 [2023-08-04 04:22:44,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:44,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:22:44,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 288 [2023-08-04 04:22:44,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:22:45,237 INFO L124 PetriNetUnfolderBase]: 4498/8074 cut-off events. [2023-08-04 04:22:45,238 INFO L125 PetriNetUnfolderBase]: For 2753/2783 co-relation queries the response was YES. [2023-08-04 04:22:45,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18197 conditions, 8074 events. 4498/8074 cut-off events. For 2753/2783 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 56292 event pairs, 975 based on Foata normal form. 22/6741 useless extension candidates. Maximal degree in co-relation 12315. Up to 4221 conditions per place. [2023-08-04 04:22:45,308 INFO L140 encePairwiseOnDemand]: 280/288 looper letters, 126 selfloop transitions, 9 changer transitions 0/157 dead transitions. [2023-08-04 04:22:45,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 157 transitions, 852 flow [2023-08-04 04:22:45,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:22:45,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:22:45,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 871 transitions. [2023-08-04 04:22:45,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040509259259259 [2023-08-04 04:22:45,312 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 871 transitions. [2023-08-04 04:22:45,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 871 transitions. [2023-08-04 04:22:45,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:22:45,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 871 transitions. [2023-08-04 04:22:45,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 145.16666666666666) internal successors, (871), 6 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:45,317 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) [2023-08-04 04:22:45,317 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) [2023-08-04 04:22:45,317 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 258 flow. Second operand 6 states and 871 transitions. [2023-08-04 04:22:45,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 157 transitions, 852 flow [2023-08-04 04:22:45,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 157 transitions, 842 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:22:45,328 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 304 flow [2023-08-04 04:22:45,328 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=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2023-08-04 04:22:45,330 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2023-08-04 04:22:45,330 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 304 flow [2023-08-04 04:22:45,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:45,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:45,331 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] [2023-08-04 04:22:45,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:22:45,335 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:22:45,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:45,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1446795090, now seen corresponding path program 1 times [2023-08-04 04:22:45,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:45,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394000068] [2023-08-04 04:22:45,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:45,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:22:45,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:22:45,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394000068] [2023-08-04 04:22:45,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394000068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:22:45,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:22:45,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:22:45,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529743880] [2023-08-04 04:22:45,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:22:45,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:22:45,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:22:45,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:22:45,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:22:45,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 288 [2023-08-04 04:22:45,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 304 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) [2023-08-04 04:22:45,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:22:45,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 288 [2023-08-04 04:22:45,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:22:46,738 INFO L124 PetriNetUnfolderBase]: 6381/11797 cut-off events. [2023-08-04 04:22:46,739 INFO L125 PetriNetUnfolderBase]: For 3414/3440 co-relation queries the response was YES. [2023-08-04 04:22:46,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27039 conditions, 11797 events. 6381/11797 cut-off events. For 3414/3440 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 89595 event pairs, 1476 based on Foata normal form. 26/9940 useless extension candidates. Maximal degree in co-relation 18635. Up to 3714 conditions per place. [2023-08-04 04:22:46,824 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 117 selfloop transitions, 9 changer transitions 2/157 dead transitions. [2023-08-04 04:22:46,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 157 transitions, 834 flow [2023-08-04 04:22:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:22:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:22:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 753 transitions. [2023-08-04 04:22:46,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229166666666667 [2023-08-04 04:22:46,827 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 753 transitions. [2023-08-04 04:22:46,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 753 transitions. [2023-08-04 04:22:46,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:22:46,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 753 transitions. [2023-08-04 04:22:46,829 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) [2023-08-04 04:22:46,832 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) [2023-08-04 04:22:46,832 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) [2023-08-04 04:22:46,832 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 304 flow. Second operand 5 states and 753 transitions. [2023-08-04 04:22:46,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 157 transitions, 834 flow [2023-08-04 04:22:46,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 157 transitions, 828 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:22:46,849 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 381 flow [2023-08-04 04:22:46,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2023-08-04 04:22:46,852 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 31 predicate places. [2023-08-04 04:22:46,852 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 381 flow [2023-08-04 04:22:46,853 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) [2023-08-04 04:22:46,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:46,853 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] [2023-08-04 04:22:46,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:22:46,853 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:22:46,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:46,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1840762654, now seen corresponding path program 1 times [2023-08-04 04:22:46,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:46,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305895010] [2023-08-04 04:22:46,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:46,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:22:46,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:22:46,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305895010] [2023-08-04 04:22:46,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305895010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:22:46,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:22:46,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:22:46,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590931357] [2023-08-04 04:22:46,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:22:46,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:22:46,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:22:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:22:46,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:22:46,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 288 [2023-08-04 04:22:46,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 381 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) [2023-08-04 04:22:46,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:22:46,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 288 [2023-08-04 04:22:46,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:22:48,636 INFO L124 PetriNetUnfolderBase]: 8229/15249 cut-off events. [2023-08-04 04:22:48,636 INFO L125 PetriNetUnfolderBase]: For 10802/10944 co-relation queries the response was YES. [2023-08-04 04:22:48,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38354 conditions, 15249 events. 8229/15249 cut-off events. For 10802/10944 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 118972 event pairs, 2171 based on Foata normal form. 506/14084 useless extension candidates. Maximal degree in co-relation 22637. Up to 5092 conditions per place. [2023-08-04 04:22:48,734 INFO L140 encePairwiseOnDemand]: 281/288 looper letters, 95 selfloop transitions, 9 changer transitions 38/171 dead transitions. [2023-08-04 04:22:48,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 171 transitions, 1049 flow [2023-08-04 04:22:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:22:48,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:22:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 747 transitions. [2023-08-04 04:22:48,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2023-08-04 04:22:48,737 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 747 transitions. [2023-08-04 04:22:48,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 747 transitions. [2023-08-04 04:22:48,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:22:48,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 747 transitions. [2023-08-04 04:22:48,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:48,743 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) [2023-08-04 04:22:48,744 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) [2023-08-04 04:22:48,744 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 381 flow. Second operand 5 states and 747 transitions. [2023-08-04 04:22:48,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 171 transitions, 1049 flow [2023-08-04 04:22:48,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 171 transitions, 1037 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-04 04:22:48,777 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 459 flow [2023-08-04 04:22:48,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=459, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2023-08-04 04:22:48,778 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2023-08-04 04:22:48,778 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 459 flow [2023-08-04 04:22:48,779 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) [2023-08-04 04:22:48,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:48,779 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] [2023-08-04 04:22:48,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:22:48,779 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:22:48,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:48,780 INFO L85 PathProgramCache]: Analyzing trace with hash -150119368, now seen corresponding path program 1 times [2023-08-04 04:22:48,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:48,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725302791] [2023-08-04 04:22:48,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:48,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:22:48,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:22:48,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725302791] [2023-08-04 04:22:48,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725302791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:22:48,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:22:48,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:22:48,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170886836] [2023-08-04 04:22:48,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:22:48,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:22:48,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:22:48,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:22:48,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:22:49,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 288 [2023-08-04 04:22:49,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 459 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) [2023-08-04 04:22:49,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:22:49,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 288 [2023-08-04 04:22:49,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:22:50,592 INFO L124 PetriNetUnfolderBase]: 9001/16413 cut-off events. [2023-08-04 04:22:50,592 INFO L125 PetriNetUnfolderBase]: For 15904/16008 co-relation queries the response was YES. [2023-08-04 04:22:50,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44088 conditions, 16413 events. 9001/16413 cut-off events. For 15904/16008 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 125197 event pairs, 1335 based on Foata normal form. 212/15112 useless extension candidates. Maximal degree in co-relation 21986. Up to 11542 conditions per place. [2023-08-04 04:22:50,673 INFO L140 encePairwiseOnDemand]: 283/288 looper letters, 100 selfloop transitions, 5 changer transitions 5/138 dead transitions. [2023-08-04 04:22:50,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 138 transitions, 913 flow [2023-08-04 04:22:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:22:50,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:22:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 617 transitions. [2023-08-04 04:22:50,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355902777777778 [2023-08-04 04:22:50,675 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 617 transitions. [2023-08-04 04:22:50,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 617 transitions. [2023-08-04 04:22:50,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:22:50,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 617 transitions. [2023-08-04 04:22:50,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:50,679 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) [2023-08-04 04:22:50,680 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) [2023-08-04 04:22:50,680 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 459 flow. Second operand 4 states and 617 transitions. [2023-08-04 04:22:50,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 138 transitions, 913 flow [2023-08-04 04:22:50,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 138 transitions, 905 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-04 04:22:50,718 INFO L231 Difference]: Finished difference. Result has 95 places, 88 transitions, 467 flow [2023-08-04 04:22:50,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=467, PETRI_PLACES=95, PETRI_TRANSITIONS=88} [2023-08-04 04:22:50,719 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 42 predicate places. [2023-08-04 04:22:50,719 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 88 transitions, 467 flow [2023-08-04 04:22:50,719 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) [2023-08-04 04:22:50,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:50,720 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] [2023-08-04 04:22:50,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 04:22:50,720 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:22:50,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:50,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2084319678, now seen corresponding path program 1 times [2023-08-04 04:22:50,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:50,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787271970] [2023-08-04 04:22:50,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:50,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:22:51,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:22:51,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787271970] [2023-08-04 04:22:51,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787271970] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:22:51,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033082149] [2023-08-04 04:22:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:51,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:22:51,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:22:51,007 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:22:51,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:22:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:51,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-04 04:22:51,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:22:51,310 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 [2023-08-04 04:22:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:22:51,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:22:51,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033082149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:22:51,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:22:51,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-08-04 04:22:51,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705705500] [2023-08-04 04:22:51,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:22:51,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:22:51,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:22:51,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:22:51,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-04 04:22:51,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 288 [2023-08-04 04:22:51,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 88 transitions, 467 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) [2023-08-04 04:22:51,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:22:51,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 288 [2023-08-04 04:22:51,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:22:53,343 INFO L124 PetriNetUnfolderBase]: 8722/15907 cut-off events. [2023-08-04 04:22:53,343 INFO L125 PetriNetUnfolderBase]: For 17807/17931 co-relation queries the response was YES. [2023-08-04 04:22:53,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44134 conditions, 15907 events. 8722/15907 cut-off events. For 17807/17931 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 120080 event pairs, 2285 based on Foata normal form. 40/14393 useless extension candidates. Maximal degree in co-relation 29033. Up to 12553 conditions per place. [2023-08-04 04:22:53,558 INFO L140 encePairwiseOnDemand]: 280/288 looper letters, 84 selfloop transitions, 11 changer transitions 0/123 dead transitions. [2023-08-04 04:22:53,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 123 transitions, 837 flow [2023-08-04 04:22:53,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:22:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:22:53,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 599 transitions. [2023-08-04 04:22:53,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5199652777777778 [2023-08-04 04:22:53,560 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 599 transitions. [2023-08-04 04:22:53,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 599 transitions. [2023-08-04 04:22:53,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:22:53,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 599 transitions. [2023-08-04 04:22:53,562 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) [2023-08-04 04:22:53,564 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) [2023-08-04 04:22:53,565 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) [2023-08-04 04:22:53,565 INFO L175 Difference]: Start difference. First operand has 95 places, 88 transitions, 467 flow. Second operand 4 states and 599 transitions. [2023-08-04 04:22:53,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 123 transitions, 837 flow [2023-08-04 04:22:53,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 123 transitions, 825 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-04 04:22:53,598 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 550 flow [2023-08-04 04:22:53,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=550, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2023-08-04 04:22:53,599 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2023-08-04 04:22:53,599 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 550 flow [2023-08-04 04:22:53,599 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) [2023-08-04 04:22:53,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:53,599 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] [2023-08-04 04:22:53,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 04:22:53,806 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,SelfDestructingSolverStorable10 [2023-08-04 04:22:53,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:22:53,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:53,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2141812160, now seen corresponding path program 1 times [2023-08-04 04:22:53,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:53,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381558438] [2023-08-04 04:22:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:53,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:22:53,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:22:53,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381558438] [2023-08-04 04:22:53,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381558438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:22:53,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:22:53,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:22:53,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006845502] [2023-08-04 04:22:53,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:22:53,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:22:53,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:22:53,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:22:53,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:22:53,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-04 04:22:53,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:53,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:22:53,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-04 04:22:53,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:22:56,033 INFO L124 PetriNetUnfolderBase]: 9355/18654 cut-off events. [2023-08-04 04:22:56,033 INFO L125 PetriNetUnfolderBase]: For 21641/21955 co-relation queries the response was YES. [2023-08-04 04:22:56,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51510 conditions, 18654 events. 9355/18654 cut-off events. For 21641/21955 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 157280 event pairs, 4260 based on Foata normal form. 131/18481 useless extension candidates. Maximal degree in co-relation 34500. Up to 9099 conditions per place. [2023-08-04 04:22:56,139 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 85 selfloop transitions, 3 changer transitions 3/129 dead transitions. [2023-08-04 04:22:56,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 129 transitions, 900 flow [2023-08-04 04:22:56,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:22:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:22:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-04 04:22:56,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358796296296297 [2023-08-04 04:22:56,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-04 04:22:56,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-04 04:22:56,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:22:56,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-04 04:22:56,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:56,144 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) [2023-08-04 04:22:56,144 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) [2023-08-04 04:22:56,144 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 550 flow. Second operand 3 states and 463 transitions. [2023-08-04 04:22:56,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 129 transitions, 900 flow [2023-08-04 04:22:56,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 129 transitions, 895 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:22:56,181 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 583 flow [2023-08-04 04:22:56,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=583, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2023-08-04 04:22:56,182 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2023-08-04 04:22:56,182 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 583 flow [2023-08-04 04:22:56,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:56,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:56,182 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] [2023-08-04 04:22:56,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 04:22:56,183 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:22:56,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:56,183 INFO L85 PathProgramCache]: Analyzing trace with hash -762772277, now seen corresponding path program 1 times [2023-08-04 04:22:56,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:56,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553180333] [2023-08-04 04:22:56,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:56,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:22:56,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:22:56,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553180333] [2023-08-04 04:22:56,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553180333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:22:56,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:22:56,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:22:56,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555927654] [2023-08-04 04:22:56,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:22:56,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:22:56,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:22:56,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:22:56,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:22:56,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-04 04:22:56,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 583 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:56,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:22:56,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-04 04:22:56,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:22:58,824 INFO L124 PetriNetUnfolderBase]: 12173/24396 cut-off events. [2023-08-04 04:22:58,824 INFO L125 PetriNetUnfolderBase]: For 31114/31784 co-relation queries the response was YES. [2023-08-04 04:22:58,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67653 conditions, 24396 events. 12173/24396 cut-off events. For 31114/31784 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 216007 event pairs, 5331 based on Foata normal form. 187/24103 useless extension candidates. Maximal degree in co-relation 46502. Up to 11414 conditions per place. [2023-08-04 04:22:58,925 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 89 selfloop transitions, 3 changer transitions 5/135 dead transitions. [2023-08-04 04:22:58,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 135 transitions, 970 flow [2023-08-04 04:22:58,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:22:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:22:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-08-04 04:22:58,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2023-08-04 04:22:58,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-08-04 04:22:58,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-08-04 04:22:58,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:22:58,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-08-04 04:22:58,928 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) [2023-08-04 04:22:58,929 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) [2023-08-04 04:22:58,929 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) [2023-08-04 04:22:58,930 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 583 flow. Second operand 3 states and 465 transitions. [2023-08-04 04:22:58,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 135 transitions, 970 flow [2023-08-04 04:22:58,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 135 transitions, 958 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:22:58,986 INFO L231 Difference]: Finished difference. Result has 103 places, 100 transitions, 597 flow [2023-08-04 04:22:58,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=597, PETRI_PLACES=103, PETRI_TRANSITIONS=100} [2023-08-04 04:22:58,986 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2023-08-04 04:22:58,986 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 100 transitions, 597 flow [2023-08-04 04:22:58,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:22:58,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:22:58,987 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] [2023-08-04 04:22:58,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 04:22:58,987 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:22:58,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:22:58,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1956304092, now seen corresponding path program 2 times [2023-08-04 04:22:58,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:22:58,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284256889] [2023-08-04 04:22:58,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:22:58,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:22:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:22:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:22:59,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:22:59,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284256889] [2023-08-04 04:22:59,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284256889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:22:59,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:22:59,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:22:59,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440670644] [2023-08-04 04:22:59,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:22:59,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:22:59,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:22:59,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:22:59,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:22:59,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-04 04:22:59,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 100 transitions, 597 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) [2023-08-04 04:22:59,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:22:59,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-04 04:22:59,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:23:01,800 INFO L124 PetriNetUnfolderBase]: 12690/24946 cut-off events. [2023-08-04 04:23:01,801 INFO L125 PetriNetUnfolderBase]: For 34187/34892 co-relation queries the response was YES. [2023-08-04 04:23:01,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70487 conditions, 24946 events. 12690/24946 cut-off events. For 34187/34892 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 217946 event pairs, 3930 based on Foata normal form. 166/24608 useless extension candidates. Maximal degree in co-relation 44657. Up to 17824 conditions per place. [2023-08-04 04:23:01,893 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 66 selfloop transitions, 3 changer transitions 6/107 dead transitions. [2023-08-04 04:23:01,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 107 transitions, 780 flow [2023-08-04 04:23:01,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:23:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:23:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-08-04 04:23:01,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2023-08-04 04:23:01,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-08-04 04:23:01,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-08-04 04:23:01,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:23:01,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-08-04 04:23:01,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:23:01,897 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) [2023-08-04 04:23:01,898 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) [2023-08-04 04:23:01,898 INFO L175 Difference]: Start difference. First operand has 103 places, 100 transitions, 597 flow. Second operand 3 states and 450 transitions. [2023-08-04 04:23:01,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 107 transitions, 780 flow [2023-08-04 04:23:01,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 107 transitions, 774 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:23:01,950 INFO L231 Difference]: Finished difference. Result has 103 places, 95 transitions, 557 flow [2023-08-04 04:23:01,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=557, PETRI_PLACES=103, PETRI_TRANSITIONS=95} [2023-08-04 04:23:01,951 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2023-08-04 04:23:01,951 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 95 transitions, 557 flow [2023-08-04 04:23:01,952 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) [2023-08-04 04:23:01,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:23:01,952 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] [2023-08-04 04:23:01,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 04:23:01,952 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:23:01,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:23:01,952 INFO L85 PathProgramCache]: Analyzing trace with hash -952027716, now seen corresponding path program 1 times [2023-08-04 04:23:01,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:23:01,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690429941] [2023-08-04 04:23:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:23:01,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:23:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:23:02,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:23:02,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:23:02,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690429941] [2023-08-04 04:23:02,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690429941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:23:02,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:23:02,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-04 04:23:02,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905587100] [2023-08-04 04:23:02,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:23:02,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 04:23:02,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:23:02,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 04:23:02,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-04 04:23:02,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 288 [2023-08-04 04:23:02,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 557 flow. Second operand has 8 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:23:02,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:23:02,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 288 [2023-08-04 04:23:02,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:23:05,988 INFO L124 PetriNetUnfolderBase]: 18955/33667 cut-off events. [2023-08-04 04:23:05,989 INFO L125 PetriNetUnfolderBase]: For 43152/43290 co-relation queries the response was YES. [2023-08-04 04:23:06,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97244 conditions, 33667 events. 18955/33667 cut-off events. For 43152/43290 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 275761 event pairs, 4643 based on Foata normal form. 164/33748 useless extension candidates. Maximal degree in co-relation 43973. Up to 25081 conditions per place. [2023-08-04 04:23:06,189 INFO L140 encePairwiseOnDemand]: 276/288 looper letters, 87 selfloop transitions, 10 changer transitions 123/238 dead transitions. [2023-08-04 04:23:06,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 238 transitions, 1692 flow [2023-08-04 04:23:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-04 04:23:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-04 04:23:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1678 transitions. [2023-08-04 04:23:06,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481837606837607 [2023-08-04 04:23:06,194 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1678 transitions. [2023-08-04 04:23:06,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1678 transitions. [2023-08-04 04:23:06,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:23:06,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1678 transitions. [2023-08-04 04:23:06,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 129.07692307692307) internal successors, (1678), 13 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:23:06,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 288.0) internal successors, (4032), 14 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:23:06,203 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 288.0) internal successors, (4032), 14 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:23:06,203 INFO L175 Difference]: Start difference. First operand has 103 places, 95 transitions, 557 flow. Second operand 13 states and 1678 transitions. [2023-08-04 04:23:06,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 238 transitions, 1692 flow [2023-08-04 04:23:06,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 238 transitions, 1689 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:23:06,273 INFO L231 Difference]: Finished difference. Result has 117 places, 89 transitions, 534 flow [2023-08-04 04:23:06,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=534, PETRI_PLACES=117, PETRI_TRANSITIONS=89} [2023-08-04 04:23:06,274 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2023-08-04 04:23:06,274 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 89 transitions, 534 flow [2023-08-04 04:23:06,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:23:06,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:23:06,274 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] [2023-08-04 04:23:06,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-04 04:23:06,275 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:23:06,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:23:06,275 INFO L85 PathProgramCache]: Analyzing trace with hash 698953974, now seen corresponding path program 3 times [2023-08-04 04:23:06,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:23:06,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553833440] [2023-08-04 04:23:06,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:23:06,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:23:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:23:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:23:06,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:23:06,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553833440] [2023-08-04 04:23:06,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553833440] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:23:06,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393860095] [2023-08-04 04:23:06,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 04:23:06,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:23:06,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:23:06,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:23:06,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:23:06,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-04 04:23:06,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:23:06,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 61 conjunts are in the unsatisfiable core [2023-08-04 04:23:06,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:23:06,739 INFO L322 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-08-04 04:23:06,740 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2023-08-04 04:23:07,024 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 [2023-08-04 04:23:07,136 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-08-04 04:23:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:23:07,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:23:07,301 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-04 04:23:07,302 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 [2023-08-04 04:23:07,306 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 [2023-08-04 04:23:07,311 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 [2023-08-04 04:23:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:23:07,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393860095] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:23:07,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:23:07,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 7] total 13 [2023-08-04 04:23:07,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662716884] [2023-08-04 04:23:07,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:23:07,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-04 04:23:07,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:23:07,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-04 04:23:07,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-04 04:23:07,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 288 [2023-08-04 04:23:07,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 89 transitions, 534 flow. Second operand has 14 states, 14 states have (on average 120.14285714285714) internal successors, (1682), 14 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:23:07,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:23:07,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 288 [2023-08-04 04:23:07,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:23:07,939 INFO L124 PetriNetUnfolderBase]: 317/838 cut-off events. [2023-08-04 04:23:07,939 INFO L125 PetriNetUnfolderBase]: For 1036/1043 co-relation queries the response was YES. [2023-08-04 04:23:07,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 838 events. 317/838 cut-off events. For 1036/1043 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4213 event pairs, 20 based on Foata normal form. 30/867 useless extension candidates. Maximal degree in co-relation 2523. Up to 375 conditions per place. [2023-08-04 04:23:07,942 INFO L140 encePairwiseOnDemand]: 277/288 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2023-08-04 04:23:07,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 97 transitions, 688 flow [2023-08-04 04:23:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-04 04:23:07,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-04 04:23:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1246 transitions. [2023-08-04 04:23:07,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326388888888889 [2023-08-04 04:23:07,946 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1246 transitions. [2023-08-04 04:23:07,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1246 transitions. [2023-08-04 04:23:07,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:23:07,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1246 transitions. [2023-08-04 04:23:07,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.6) internal successors, (1246), 10 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:23:07,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 288.0) internal successors, (3168), 11 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:23:07,954 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 288.0) internal successors, (3168), 11 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:23:07,954 INFO L175 Difference]: Start difference. First operand has 117 places, 89 transitions, 534 flow. Second operand 10 states and 1246 transitions. [2023-08-04 04:23:07,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 97 transitions, 688 flow [2023-08-04 04:23:07,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 608 flow, removed 18 selfloop flow, removed 15 redundant places. [2023-08-04 04:23:07,958 INFO L231 Difference]: Finished difference. Result has 77 places, 0 transitions, 0 flow [2023-08-04 04:23:07,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=68, 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=10, PETRI_FLOW=0, PETRI_PLACES=77, PETRI_TRANSITIONS=0} [2023-08-04 04:23:07,959 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2023-08-04 04:23:07,959 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 0 transitions, 0 flow [2023-08-04 04:23:07,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 120.14285714285714) internal successors, (1682), 14 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:23:07,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 04:23:07,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 04:23:07,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 04:23:07,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 04:23:08,166 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,SelfDestructingSolverStorable15 [2023-08-04 04:23:08,167 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:23:08,167 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 04:23:08,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 163 transitions, 338 flow [2023-08-04 04:23:08,188 INFO L124 PetriNetUnfolderBase]: 15/188 cut-off events. [2023-08-04 04:23:08,188 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:23:08,189 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. [2023-08-04 04:23:08,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 163 transitions, 338 flow [2023-08-04 04:23:08,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 163 transitions, 338 flow [2023-08-04 04:23:08,190 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:23:08,191 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 163 transitions, 338 flow [2023-08-04 04:23:08,191 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 163 transitions, 338 flow [2023-08-04 04:23:08,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 163 transitions, 338 flow [2023-08-04 04:23:08,208 INFO L124 PetriNetUnfolderBase]: 15/188 cut-off events. [2023-08-04 04:23:08,208 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:23:08,210 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. [2023-08-04 04:23:08,216 INFO L119 LiptonReduction]: Number of co-enabled transitions 11780 [2023-08-04 04:23:12,641 INFO L134 LiptonReduction]: Checked pairs total: 26357 [2023-08-04 04:23:12,642 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-04 04:23:12,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:23:12,644 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;@2759fa3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:23:12,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:23:12,648 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:23:12,648 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2023-08-04 04:23:12,648 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:23:12,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:23:12,648 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 04:23:12,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:23:12,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:23:12,649 INFO L85 PathProgramCache]: Analyzing trace with hash 976914159, now seen corresponding path program 1 times [2023-08-04 04:23:12,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:23:12,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002628592] [2023-08-04 04:23:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:23:12,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:23:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:23:12,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:23:12,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:23:12,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002628592] [2023-08-04 04:23:12,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002628592] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:23:12,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408584698] [2023-08-04 04:23:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:23:12,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:23:12,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:23:12,710 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:23:12,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:23:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:23:12,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:23:12,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:23:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:23:12,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:23:12,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408584698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:23:12,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:23:12,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 04:23:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109850340] [2023-08-04 04:23:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:23:12,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:23:12,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:23:12,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:23:12,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:23:12,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 288 [2023-08-04 04:23:12,862 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) [2023-08-04 04:23:12,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:23:12,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 288 [2023-08-04 04:23:12,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:23:13,145 INFO L124 PetriNetUnfolderBase]: 934/1547 cut-off events. [2023-08-04 04:23:13,145 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-04 04:23:13,146 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 7686 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. [2023-08-04 04:23:13,147 INFO L140 encePairwiseOnDemand]: 282/288 looper letters, 0 selfloop transitions, 0 changer transitions 101/101 dead transitions. [2023-08-04 04:23:13,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 370 flow [2023-08-04 04:23:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:23:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:23:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2023-08-04 04:23:13,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215277777777778 [2023-08-04 04:23:13,149 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2023-08-04 04:23:13,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2023-08-04 04:23:13,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:23:13,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2023-08-04 04:23:13,151 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) [2023-08-04 04:23:13,152 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) [2023-08-04 04:23:13,153 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) [2023-08-04 04:23:13,153 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 128 flow. Second operand 5 states and 751 transitions. [2023-08-04 04:23:13,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 370 flow [2023-08-04 04:23:13,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 101 transitions, 369 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:23:13,154 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-04 04:23:13,154 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} [2023-08-04 04:23:13,155 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-08-04 04:23:13,155 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-04 04:23:13,155 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) [2023-08-04 04:23:13,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:23:13,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 04:23:13,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:23:13,361 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:23:13,362 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:23:13,362 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:23:13,362 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:23:13,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:23:13 BasicIcfg [2023-08-04 04:23:13,367 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:23:13,368 INFO L158 Benchmark]: Toolchain (without parser) took 47267.54ms. Allocated memory was 562.0MB in the beginning and 11.0GB in the end (delta: 10.4GB). Free memory was 507.7MB in the beginning and 9.8GB in the end (delta: -9.3GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-04 04:23:13,368 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 348.1MB. Free memory was 296.9MB in the beginning and 296.8MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:23:13,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.74ms. Allocated memory is still 562.0MB. Free memory was 507.7MB in the beginning and 486.7MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 04:23:13,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.64ms. Allocated memory is still 562.0MB. Free memory was 486.7MB in the beginning and 484.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:23:13,369 INFO L158 Benchmark]: Boogie Preprocessor took 31.96ms. Allocated memory is still 562.0MB. Free memory was 484.1MB in the beginning and 482.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:23:13,369 INFO L158 Benchmark]: RCFGBuilder took 744.99ms. Allocated memory is still 562.0MB. Free memory was 482.7MB in the beginning and 445.0MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-04 04:23:13,369 INFO L158 Benchmark]: TraceAbstraction took 45957.71ms. Allocated memory was 562.0MB in the beginning and 11.0GB in the end (delta: 10.4GB). Free memory was 444.3MB in the beginning and 9.8GB in the end (delta: -9.3GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-04 04:23:13,370 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 348.1MB. Free memory was 296.9MB in the beginning and 296.8MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 483.74ms. Allocated memory is still 562.0MB. Free memory was 507.7MB in the beginning and 486.7MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.64ms. Allocated memory is still 562.0MB. Free memory was 486.7MB in the beginning and 484.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.96ms. Allocated memory is still 562.0MB. Free memory was 484.1MB in the beginning and 482.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 744.99ms. Allocated memory is still 562.0MB. Free memory was 482.7MB in the beginning and 445.0MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * TraceAbstraction took 45957.71ms. Allocated memory was 562.0MB in the beginning and 11.0GB in the end (delta: 10.4GB). Free memory was 444.3MB in the beginning and 9.8GB in the end (delta: -9.3GB). Peak memory consumption was 1.7GB. 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: 4.0s, 96 PlacesBefore, 18 PlacesAfterwards, 100 TransitionsBefore, 19 TransitionsAfterwards, 1984 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 3 ChoiceCompositions, 98 TotalNumberOfCompositions, 1930 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1647, independent: 1588, independent conditional: 0, independent unconditional: 1588, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1079, independent: 1054, independent conditional: 0, independent unconditional: 1054, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1647, independent: 534, independent conditional: 0, independent unconditional: 534, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 1079, unknown conditional: 0, unknown unconditional: 1079] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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, 24254 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12861, independent: 12475, independent conditional: 0, independent unconditional: 12475, dependent: 386, dependent conditional: 0, dependent unconditional: 386, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6077, independent: 5998, independent conditional: 0, independent unconditional: 5998, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12861, independent: 6477, independent conditional: 0, independent unconditional: 6477, dependent: 307, dependent conditional: 0, dependent unconditional: 307, unknown: 6077, unknown conditional: 0, unknown unconditional: 6077] , Statistics on independence cache: Total cache size (in pairs): 523, Positive cache size: 489, Positive conditional cache size: 0, Positive unconditional cache size: 489, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 155 PlacesBefore, 53 PlacesAfterwards, 163 TransitionsBefore, 58 TransitionsAfterwards, 11780 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 80 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 3 ChoiceCompositions, 125 TotalNumberOfCompositions, 26357 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12823, independent: 12363, independent conditional: 0, independent unconditional: 12363, dependent: 460, dependent conditional: 0, dependent unconditional: 460, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6058, independent: 5984, independent conditional: 0, independent unconditional: 5984, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12823, independent: 6379, independent conditional: 0, independent unconditional: 6379, dependent: 386, dependent conditional: 0, dependent unconditional: 386, unknown: 6058, unknown conditional: 0, unknown unconditional: 6058] , Statistics on independence cache: Total cache size (in pairs): 490, Positive cache size: 456, Positive conditional cache size: 0, Positive unconditional cache size: 456, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, 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 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: 6.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=1, InterpolantAutomatonStates: 6, 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 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: 30.5s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 22.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 1246 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1018 mSDsluCounter, 835 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 728 mSDsCounter, 91 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3153 IncrementalHoareTripleChecker+Invalid, 3248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 91 mSolverCounterUnsat, 107 mSDtfsCounter, 3153 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=597occurred in iteration=10, InterpolantAutomatonStates: 70, 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, 2.2s InterpolantComputationTime, 358 NumberOfCodeBlocks, 358 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 370 ConstructedInterpolants, 3 QuantifiedInterpolants, 1341 SizeOfPredicates, 11 NumberOfNonLiveVariables, 586 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 19/24 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 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: 4.1s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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: 5.2s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, 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, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 111 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 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! [2023-08-04 04:23:13,393 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...