/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-lit_sssc12_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:28:42,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:28:42,594 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:28:42,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:28:42,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:28:42,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:28:42,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:28:42,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:28:42,638 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:28:42,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:28:42,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:28:42,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:28:42,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:28:42,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:28:42,644 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:28:42,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:28:42,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:28:42,645 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:28:42,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:28:42,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:28:42,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:28:42,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:28:42,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:28:42,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:28:42,646 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:28:42,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:28:42,647 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:28:42,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:28:42,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:28:42,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:28:42,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:28:42,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:28:42,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:28:42,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:28:42,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:28:42,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:28:42,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:28:42,650 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:28:42,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:28:42,650 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:28:42,650 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:28:42,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:28:42,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:28:42,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:28:42,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:28:42,878 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:28:42,879 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:28:42,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-lit_sssc12_bound2.i [2023-08-04 04:28:44,049 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:28:44,284 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:28:44,285 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-lit_sssc12_bound2.i [2023-08-04 04:28:44,313 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c14f37d/fd207b27248a49c9b6dab7cef75ca4b0/FLAG82d3ac667 [2023-08-04 04:28:44,327 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c14f37d/fd207b27248a49c9b6dab7cef75ca4b0 [2023-08-04 04:28:44,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:28:44,333 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:28:44,336 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:28:44,336 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:28:44,339 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:28:44,340 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:28:44" (1/1) ... [2023-08-04 04:28:44,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c824a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44, skipping insertion in model container [2023-08-04 04:28:44,341 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:28:44" (1/1) ... [2023-08-04 04:28:44,401 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:28:44,825 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-lit_sssc12_bound2.i[46865,46878] [2023-08-04 04:28:44,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:28:44,855 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:28:44,881 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-04 04:28:44,882 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-04 04:28:44,909 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-lit_sssc12_bound2.i[46865,46878] [2023-08-04 04:28:44,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:28:44,968 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:28:44,968 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:28:44,974 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:28:44,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44 WrapperNode [2023-08-04 04:28:44,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:28:44,975 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:28:44,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:28:44,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:28:44,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44" (1/1) ... [2023-08-04 04:28:45,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44" (1/1) ... [2023-08-04 04:28:45,034 INFO L138 Inliner]: procedures = 275, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 87 [2023-08-04 04:28:45,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:28:45,035 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:28:45,035 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:28:45,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:28:45,043 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44" (1/1) ... [2023-08-04 04:28:45,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44" (1/1) ... [2023-08-04 04:28:45,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44" (1/1) ... [2023-08-04 04:28:45,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44" (1/1) ... [2023-08-04 04:28:45,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44" (1/1) ... [2023-08-04 04:28:45,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44" (1/1) ... [2023-08-04 04:28:45,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44" (1/1) ... [2023-08-04 04:28:45,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44" (1/1) ... [2023-08-04 04:28:45,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:28:45,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:28:45,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:28:45,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:28:45,080 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44" (1/1) ... [2023-08-04 04:28:45,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:28:45,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:28:45,110 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 04:28:45,121 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 04:28:45,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 04:28:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-08-04 04:28:45,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-08-04 04:28:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:28:45,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:28:45,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 04:28:45,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:28:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 04:28:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:28:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:28:45,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:28:45,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:28:45,150 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 04:28:45,300 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:28:45,303 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:28:45,467 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:28:45,493 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:28:45,493 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 04:28:45,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:28:45 BoogieIcfgContainer [2023-08-04 04:28:45,501 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:28:45,505 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:28:45,505 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:28:45,508 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:28:45,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:28:44" (1/3) ... [2023-08-04 04:28:45,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3a13ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:28:45, skipping insertion in model container [2023-08-04 04:28:45,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:28:44" (2/3) ... [2023-08-04 04:28:45,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3a13ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:28:45, skipping insertion in model container [2023-08-04 04:28:45,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:28:45" (3/3) ... [2023-08-04 04:28:45,510 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-lit_sssc12_bound2.i [2023-08-04 04:28:45,518 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:28:45,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:28:45,527 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:28:45,527 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:28:45,568 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:28:45,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 80 transitions, 165 flow [2023-08-04 04:28:45,638 INFO L124 PetriNetUnfolderBase]: 7/91 cut-off events. [2023-08-04 04:28:45,639 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:45,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 7/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2023-08-04 04:28:45,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 80 transitions, 165 flow [2023-08-04 04:28:45,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 80 transitions, 165 flow [2023-08-04 04:28:45,650 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:28:45,657 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 80 transitions, 165 flow [2023-08-04 04:28:45,660 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 80 transitions, 165 flow [2023-08-04 04:28:45,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 80 transitions, 165 flow [2023-08-04 04:28:45,684 INFO L124 PetriNetUnfolderBase]: 7/91 cut-off events. [2023-08-04 04:28:45,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:45,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 7/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2023-08-04 04:28:45,687 INFO L119 LiptonReduction]: Number of co-enabled transitions 1054 [2023-08-04 04:28:48,489 INFO L134 LiptonReduction]: Checked pairs total: 863 [2023-08-04 04:28:48,489 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-04 04:28:48,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:28:48,507 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;@62a91610, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:28:48,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:28:48,511 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:28:48,511 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2023-08-04 04:28:48,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:48,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:48,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:28:48,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:48,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:48,516 INFO L85 PathProgramCache]: Analyzing trace with hash 353103505, now seen corresponding path program 1 times [2023-08-04 04:28:48,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:48,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313424351] [2023-08-04 04:28:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:48,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:48,896 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 04:28:48,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:48,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313424351] [2023-08-04 04:28:48,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313424351] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:28:48,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:28:48,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:28:48,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556434946] [2023-08-04 04:28:48,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:28:48,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:28:48,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:48,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:28:48,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:28:48,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 165 [2023-08-04 04:28:48,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 10 transitions, 25 flow. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 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 04:28:48,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:48,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 165 [2023-08-04 04:28:49,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:49,046 INFO L124 PetriNetUnfolderBase]: 19/47 cut-off events. [2023-08-04 04:28:49,047 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:49,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 47 events. 19/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 113 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 84. Up to 26 conditions per place. [2023-08-04 04:28:49,048 INFO L140 encePairwiseOnDemand]: 161/165 looper letters, 12 selfloop transitions, 3 changer transitions 2/18 dead transitions. [2023-08-04 04:28:49,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 18 transitions, 75 flow [2023-08-04 04:28:49,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:28:49,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:28:49,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2023-08-04 04:28:49,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2023-08-04 04:28:49,061 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 266 transitions. [2023-08-04 04:28:49,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 266 transitions. [2023-08-04 04:28:49,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:49,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 266 transitions. [2023-08-04 04:28:49,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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 04:28:49,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 04:28:49,072 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 165.0) internal successors, (825), 5 states have internal predecessors, (825), 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 04:28:49,073 INFO L175 Difference]: Start difference. First operand has 12 places, 10 transitions, 25 flow. Second operand 4 states and 266 transitions. [2023-08-04 04:28:49,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 18 transitions, 75 flow [2023-08-04 04:28:49,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 18 transitions, 75 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:28:49,076 INFO L231 Difference]: Finished difference. Result has 16 places, 10 transitions, 37 flow [2023-08-04 04:28:49,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=37, PETRI_PLACES=16, PETRI_TRANSITIONS=10} [2023-08-04 04:28:49,081 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, 4 predicate places. [2023-08-04 04:28:49,081 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 10 transitions, 37 flow [2023-08-04 04:28:49,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 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 04:28:49,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:49,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 04:28:49,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:28:49,082 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:49,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:49,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1938692748, now seen corresponding path program 1 times [2023-08-04 04:28:49,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:49,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641264746] [2023-08-04 04:28:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:49,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:28:49,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:49,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641264746] [2023-08-04 04:28:49,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641264746] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:28:49,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074068949] [2023-08-04 04:28:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:49,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:28:49,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:28:49,362 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 04:28:49,385 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 04:28:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:49,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-04 04:28:49,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:28:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:28:49,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:28:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:28:49,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074068949] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:28:49,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:28:49,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-08-04 04:28:49,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649204342] [2023-08-04 04:28:49,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:28:49,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-04 04:28:49,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:49,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-04 04:28:49,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-04 04:28:50,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 165 [2023-08-04 04:28:50,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 10 transitions, 37 flow. Second operand has 9 states, 9 states have (on average 60.666666666666664) internal successors, (546), 9 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:28:50,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:50,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 165 [2023-08-04 04:28:50,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:50,154 INFO L124 PetriNetUnfolderBase]: 13/33 cut-off events. [2023-08-04 04:28:50,154 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-04 04:28:50,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 33 events. 13/33 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 76. Up to 16 conditions per place. [2023-08-04 04:28:50,155 INFO L140 encePairwiseOnDemand]: 161/165 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-04 04:28:50,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 19 transitions, 91 flow [2023-08-04 04:28:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:28:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:28:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 374 transitions. [2023-08-04 04:28:50,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2023-08-04 04:28:50,161 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 374 transitions. [2023-08-04 04:28:50,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 374 transitions. [2023-08-04 04:28:50,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:50,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 374 transitions. [2023-08-04 04:28:50,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 62.333333333333336) internal successors, (374), 6 states have internal predecessors, (374), 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 04:28:50,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 04:28:50,166 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 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 04:28:50,166 INFO L175 Difference]: Start difference. First operand has 16 places, 10 transitions, 37 flow. Second operand 6 states and 374 transitions. [2023-08-04 04:28:50,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 19 transitions, 91 flow [2023-08-04 04:28:50,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 19 transitions, 85 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 04:28:50,167 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-04 04:28:50,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-04 04:28:50,168 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, 5 predicate places. [2023-08-04 04:28:50,168 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-04 04:28:50,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 60.666666666666664) internal successors, (546), 9 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:28:50,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-04 04:28:50,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-04 04:28:50,179 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 04:28:50,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:28:50,378 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 04:28:50,380 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-08-04 04:28:50,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 80 transitions, 165 flow [2023-08-04 04:28:50,398 INFO L124 PetriNetUnfolderBase]: 7/91 cut-off events. [2023-08-04 04:28:50,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:50,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 7/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2023-08-04 04:28:50,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 80 transitions, 165 flow [2023-08-04 04:28:50,400 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 80 transitions, 165 flow [2023-08-04 04:28:50,400 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:28:50,400 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 80 transitions, 165 flow [2023-08-04 04:28:50,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 80 transitions, 165 flow [2023-08-04 04:28:50,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 80 transitions, 165 flow [2023-08-04 04:28:50,421 INFO L124 PetriNetUnfolderBase]: 7/91 cut-off events. [2023-08-04 04:28:50,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:50,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 7/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2023-08-04 04:28:50,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 1054 [2023-08-04 04:28:52,986 INFO L134 LiptonReduction]: Checked pairs total: 919 [2023-08-04 04:28:52,987 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-04 04:28:52,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:28:52,990 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;@62a91610, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:28:52,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:28:52,992 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:28:52,992 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-04 04:28:52,992 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:28:52,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:52,992 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:28:52,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:28:52,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:52,993 INFO L85 PathProgramCache]: Analyzing trace with hash 689715277, now seen corresponding path program 1 times [2023-08-04 04:28:52,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:52,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115593559] [2023-08-04 04:28:52,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:52,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:28:53,020 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:28:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:28:53,053 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:28:53,053 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:28:53,053 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:28:53,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:28:53,053 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:28:53,054 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:28:53,055 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:28:53,056 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:28:53,075 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:28:53,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 112 transitions, 236 flow [2023-08-04 04:28:53,090 INFO L124 PetriNetUnfolderBase]: 12/139 cut-off events. [2023-08-04 04:28:53,091 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:28:53,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 139 events. 12/139 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2023-08-04 04:28:53,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 112 transitions, 236 flow [2023-08-04 04:28:53,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 112 transitions, 236 flow [2023-08-04 04:28:53,093 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:28:53,093 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 112 transitions, 236 flow [2023-08-04 04:28:53,094 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 112 transitions, 236 flow [2023-08-04 04:28:53,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 112 transitions, 236 flow [2023-08-04 04:28:53,105 INFO L124 PetriNetUnfolderBase]: 12/139 cut-off events. [2023-08-04 04:28:53,105 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:28:53,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 139 events. 12/139 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2023-08-04 04:28:53,109 INFO L119 LiptonReduction]: Number of co-enabled transitions 4092 [2023-08-04 04:28:55,656 INFO L134 LiptonReduction]: Checked pairs total: 7566 [2023-08-04 04:28:55,657 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-04 04:28:55,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:28:55,668 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;@62a91610, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:28:55,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 04:28:55,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:28:55,671 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2023-08-04 04:28:55,671 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:28:55,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:55,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:28:55,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:55,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:55,672 INFO L85 PathProgramCache]: Analyzing trace with hash 602212131, now seen corresponding path program 1 times [2023-08-04 04:28:55,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:55,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931270261] [2023-08-04 04:28:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:55,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:55,729 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 04:28:55,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:55,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931270261] [2023-08-04 04:28:55,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931270261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:28:55,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:28:55,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:28:55,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124837991] [2023-08-04 04:28:55,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:28:55,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:28:55,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:55,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:28:55,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:28:55,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 222 [2023-08-04 04:28:55,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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 04:28:55,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:55,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 222 [2023-08-04 04:28:55,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:55,904 INFO L124 PetriNetUnfolderBase]: 769/1241 cut-off events. [2023-08-04 04:28:55,904 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 04:28:55,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2491 conditions, 1241 events. 769/1241 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6012 event pairs, 349 based on Foata normal form. 0/860 useless extension candidates. Maximal degree in co-relation 1245. Up to 705 conditions per place. [2023-08-04 04:28:55,912 INFO L140 encePairwiseOnDemand]: 218/222 looper letters, 38 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-04 04:28:55,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 44 transitions, 185 flow [2023-08-04 04:28:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:28:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:28:55,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-04 04:28:55,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2023-08-04 04:28:55,914 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-04 04:28:55,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-04 04:28:55,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:55,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-04 04:28:55,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 04:28:55,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 04:28:55,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 04:28:55,918 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 70 flow. Second operand 3 states and 318 transitions. [2023-08-04 04:28:55,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 44 transitions, 185 flow [2023-08-04 04:28:55,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 183 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-04 04:28:55,919 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 78 flow [2023-08-04 04:28:55,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2023-08-04 04:28:55,920 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-04 04:28:55,920 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 78 flow [2023-08-04 04:28:55,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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 04:28:55,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:55,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:28:55,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:28:55,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:55,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:55,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1108856905, now seen corresponding path program 1 times [2023-08-04 04:28:55,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:55,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863181248] [2023-08-04 04:28:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:55,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:56,001 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 04:28:56,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:56,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863181248] [2023-08-04 04:28:56,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863181248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:28:56,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:28:56,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:28:56,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003197818] [2023-08-04 04:28:56,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:28:56,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:28:56,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:56,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:28:56,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:28:56,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 222 [2023-08-04 04:28:56,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 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 04:28:56,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:56,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 222 [2023-08-04 04:28:56,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:56,281 INFO L124 PetriNetUnfolderBase]: 1178/1958 cut-off events. [2023-08-04 04:28:56,282 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2023-08-04 04:28:56,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4154 conditions, 1958 events. 1178/1958 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10561 event pairs, 251 based on Foata normal form. 0/1429 useless extension candidates. Maximal degree in co-relation 2341. Up to 729 conditions per place. [2023-08-04 04:28:56,293 INFO L140 encePairwiseOnDemand]: 211/222 looper letters, 80 selfloop transitions, 10 changer transitions 0/95 dead transitions. [2023-08-04 04:28:56,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 95 transitions, 427 flow [2023-08-04 04:28:56,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:28:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:28:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 599 transitions. [2023-08-04 04:28:56,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496996996996997 [2023-08-04 04:28:56,296 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 599 transitions. [2023-08-04 04:28:56,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 599 transitions. [2023-08-04 04:28:56,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:56,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 599 transitions. [2023-08-04 04:28:56,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.83333333333333) internal successors, (599), 6 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 04:28:56,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 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 04:28:56,301 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 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 04:28:56,302 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 78 flow. Second operand 6 states and 599 transitions. [2023-08-04 04:28:56,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 95 transitions, 427 flow [2023-08-04 04:28:56,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 95 transitions, 413 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:28:56,307 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 161 flow [2023-08-04 04:28:56,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-08-04 04:28:56,310 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-08-04 04:28:56,310 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 161 flow [2023-08-04 04:28:56,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 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 04:28:56,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:56,311 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:28:56,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:28:56,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:56,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:56,311 INFO L85 PathProgramCache]: Analyzing trace with hash -583199653, now seen corresponding path program 1 times [2023-08-04 04:28:56,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:56,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244034424] [2023-08-04 04:28:56,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:56,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:56,357 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 04:28:56,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:56,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244034424] [2023-08-04 04:28:56,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244034424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:28:56,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:28:56,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:28:56,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191168199] [2023-08-04 04:28:56,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:28:56,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:28:56,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:56,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:28:56,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:28:56,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 222 [2023-08-04 04:28:56,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 04:28:56,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:56,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 222 [2023-08-04 04:28:56,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:56,575 INFO L124 PetriNetUnfolderBase]: 1275/2085 cut-off events. [2023-08-04 04:28:56,575 INFO L125 PetriNetUnfolderBase]: For 984/1019 co-relation queries the response was YES. [2023-08-04 04:28:56,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5291 conditions, 2085 events. 1275/2085 cut-off events. For 984/1019 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10973 event pairs, 641 based on Foata normal form. 31/1708 useless extension candidates. Maximal degree in co-relation 2085. Up to 1369 conditions per place. [2023-08-04 04:28:56,590 INFO L140 encePairwiseOnDemand]: 218/222 looper letters, 45 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-04 04:28:56,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 320 flow [2023-08-04 04:28:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:28:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:28:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-08-04 04:28:56,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2023-08-04 04:28:56,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-08-04 04:28:56,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-08-04 04:28:56,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:56,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-08-04 04:28:56,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 04:28:56,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 04:28:56,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 04:28:56,595 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 161 flow. Second operand 3 states and 315 transitions. [2023-08-04 04:28:56,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 320 flow [2023-08-04 04:28:56,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:28:56,600 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 167 flow [2023-08-04 04:28:56,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-04 04:28:56,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2023-08-04 04:28:56,602 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 167 flow [2023-08-04 04:28:56,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 04:28:56,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:56,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:28:56,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:28:56,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:56,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:56,604 INFO L85 PathProgramCache]: Analyzing trace with hash -14824497, now seen corresponding path program 1 times [2023-08-04 04:28:56,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:56,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580513253] [2023-08-04 04:28:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:56,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:28:56,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:56,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580513253] [2023-08-04 04:28:56,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580513253] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:28:56,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055451512] [2023-08-04 04:28:56,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:56,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:28:56,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:28:56,746 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 04:28:56,770 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 04:28:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:56,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-04 04:28:56,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:28:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:28:56,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:28:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:28:56,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055451512] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:28:56,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:28:56,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-04 04:28:56,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552954556] [2023-08-04 04:28:56,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:28:56,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-04 04:28:56,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:56,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-04 04:28:56,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-08-04 04:28:57,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 222 [2023-08-04 04:28:57,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 167 flow. Second operand has 16 states, 16 states have (on average 83.875) internal successors, (1342), 16 states have internal predecessors, (1342), 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 04:28:57,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:57,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 222 [2023-08-04 04:28:57,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:58,232 INFO L124 PetriNetUnfolderBase]: 2298/3926 cut-off events. [2023-08-04 04:28:58,232 INFO L125 PetriNetUnfolderBase]: For 1989/2021 co-relation queries the response was YES. [2023-08-04 04:28:58,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10384 conditions, 3926 events. 2298/3926 cut-off events. For 1989/2021 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 24725 event pairs, 172 based on Foata normal form. 120/3499 useless extension candidates. Maximal degree in co-relation 9449. Up to 843 conditions per place. [2023-08-04 04:28:58,259 INFO L140 encePairwiseOnDemand]: 207/222 looper letters, 197 selfloop transitions, 67 changer transitions 12/281 dead transitions. [2023-08-04 04:28:58,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 281 transitions, 1546 flow [2023-08-04 04:28:58,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-04 04:28:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-04 04:28:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2511 transitions. [2023-08-04 04:28:58,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2023-08-04 04:28:58,271 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2511 transitions. [2023-08-04 04:28:58,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2511 transitions. [2023-08-04 04:28:58,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:58,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2511 transitions. [2023-08-04 04:28:58,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 93.0) internal successors, (2511), 27 states have internal predecessors, (2511), 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 04:28:58,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 222.0) internal successors, (6216), 28 states have internal predecessors, (6216), 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 04:28:58,290 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 222.0) internal successors, (6216), 28 states have internal predecessors, (6216), 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 04:28:58,290 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 167 flow. Second operand 27 states and 2511 transitions. [2023-08-04 04:28:58,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 281 transitions, 1546 flow [2023-08-04 04:28:58,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 281 transitions, 1526 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:28:58,301 INFO L231 Difference]: Finished difference. Result has 83 places, 105 transitions, 744 flow [2023-08-04 04:28:58,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=744, PETRI_PLACES=83, PETRI_TRANSITIONS=105} [2023-08-04 04:28:58,303 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2023-08-04 04:28:58,303 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 105 transitions, 744 flow [2023-08-04 04:28:58,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 83.875) internal successors, (1342), 16 states have internal predecessors, (1342), 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 04:28:58,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:58,306 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:28:58,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:28:58,511 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,SelfDestructingSolverStorable6 [2023-08-04 04:28:58,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:58,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:58,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1105924678, now seen corresponding path program 1 times [2023-08-04 04:28:58,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:58,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169797143] [2023-08-04 04:28:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:58,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:58,598 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 04:28:58,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:58,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169797143] [2023-08-04 04:28:58,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169797143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:28:58,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:28:58,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:28:58,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980370916] [2023-08-04 04:28:58,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:28:58,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:28:58,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:58,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:28:58,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:28:58,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 222 [2023-08-04 04:28:58,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 105 transitions, 744 flow. Second operand has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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 04:28:58,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:28:58,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 222 [2023-08-04 04:28:58,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:28:59,277 INFO L124 PetriNetUnfolderBase]: 3574/5990 cut-off events. [2023-08-04 04:28:59,278 INFO L125 PetriNetUnfolderBase]: For 20161/20177 co-relation queries the response was YES. [2023-08-04 04:28:59,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21053 conditions, 5990 events. 3574/5990 cut-off events. For 20161/20177 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 39624 event pairs, 776 based on Foata normal form. 8/5316 useless extension candidates. Maximal degree in co-relation 17910. Up to 3240 conditions per place. [2023-08-04 04:28:59,328 INFO L140 encePairwiseOnDemand]: 213/222 looper letters, 155 selfloop transitions, 16 changer transitions 0/179 dead transitions. [2023-08-04 04:28:59,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 179 transitions, 1546 flow [2023-08-04 04:28:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:28:59,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:28:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2023-08-04 04:28:59,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44069069069069067 [2023-08-04 04:28:59,330 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2023-08-04 04:28:59,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2023-08-04 04:28:59,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:28:59,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2023-08-04 04:28:59,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 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 04:28:59,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 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 04:28:59,334 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 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 04:28:59,335 INFO L175 Difference]: Start difference. First operand has 83 places, 105 transitions, 744 flow. Second operand 6 states and 587 transitions. [2023-08-04 04:28:59,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 179 transitions, 1546 flow [2023-08-04 04:28:59,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 179 transitions, 1409 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-08-04 04:28:59,441 INFO L231 Difference]: Finished difference. Result has 86 places, 109 transitions, 722 flow [2023-08-04 04:28:59,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=722, PETRI_PLACES=86, PETRI_TRANSITIONS=109} [2023-08-04 04:28:59,442 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-08-04 04:28:59,442 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 109 transitions, 722 flow [2023-08-04 04:28:59,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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 04:28:59,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:28:59,443 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:28:59,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:28:59,443 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:28:59,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:28:59,443 INFO L85 PathProgramCache]: Analyzing trace with hash 746223031, now seen corresponding path program 2 times [2023-08-04 04:28:59,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:28:59,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419478678] [2023-08-04 04:28:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:28:59,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:28:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:28:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:28:59,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:28:59,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419478678] [2023-08-04 04:28:59,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419478678] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:28:59,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683294707] [2023-08-04 04:28:59,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 04:28:59,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:28:59,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:28:59,665 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 04:28:59,687 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 04:28:59,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 04:28:59,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:28:59,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-04 04:28:59,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:28:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:28:59,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:28:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:28:59,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683294707] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:28:59,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:28:59,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-04 04:28:59,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140530098] [2023-08-04 04:28:59,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:28:59,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-04 04:28:59,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:28:59,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-04 04:28:59,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2023-08-04 04:29:00,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 222 [2023-08-04 04:29:00,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 109 transitions, 722 flow. Second operand has 22 states, 22 states have (on average 83.63636363636364) internal successors, (1840), 22 states have internal predecessors, (1840), 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 04:29:00,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:29:00,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 222 [2023-08-04 04:29:00,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:29:03,339 INFO L124 PetriNetUnfolderBase]: 6944/11680 cut-off events. [2023-08-04 04:29:03,339 INFO L125 PetriNetUnfolderBase]: For 103400/103432 co-relation queries the response was YES. [2023-08-04 04:29:03,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39581 conditions, 11680 events. 6944/11680 cut-off events. For 103400/103432 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 84134 event pairs, 256 based on Foata normal form. 1052/11455 useless extension candidates. Maximal degree in co-relation 38029. Up to 1896 conditions per place. [2023-08-04 04:29:03,429 INFO L140 encePairwiseOnDemand]: 207/222 looper letters, 401 selfloop transitions, 172 changer transitions 30/610 dead transitions. [2023-08-04 04:29:03,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 610 transitions, 4330 flow [2023-08-04 04:29:03,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-08-04 04:29:03,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-08-04 04:29:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 5234 transitions. [2023-08-04 04:29:03,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4136241504662557 [2023-08-04 04:29:03,445 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 5234 transitions. [2023-08-04 04:29:03,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 5234 transitions. [2023-08-04 04:29:03,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:29:03,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 5234 transitions. [2023-08-04 04:29:03,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 91.82456140350877) internal successors, (5234), 57 states have internal predecessors, (5234), 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 04:29:03,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 222.0) internal successors, (12876), 58 states have internal predecessors, (12876), 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 04:29:03,480 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 222.0) internal successors, (12876), 58 states have internal predecessors, (12876), 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 04:29:03,480 INFO L175 Difference]: Start difference. First operand has 86 places, 109 transitions, 722 flow. Second operand 57 states and 5234 transitions. [2023-08-04 04:29:03,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 610 transitions, 4330 flow [2023-08-04 04:29:03,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 610 transitions, 4307 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:29:03,608 INFO L231 Difference]: Finished difference. Result has 176 places, 224 transitions, 2239 flow [2023-08-04 04:29:03,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=2239, PETRI_PLACES=176, PETRI_TRANSITIONS=224} [2023-08-04 04:29:03,609 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2023-08-04 04:29:03,609 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 224 transitions, 2239 flow [2023-08-04 04:29:03,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 83.63636363636364) internal successors, (1840), 22 states have internal predecessors, (1840), 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 04:29:03,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:29:03,610 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:29:03,619 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 04:29:03,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:29:03,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:29:03,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:29:03,817 INFO L85 PathProgramCache]: Analyzing trace with hash 76074356, now seen corresponding path program 1 times [2023-08-04 04:29:03,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:29:03,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087636833] [2023-08-04 04:29:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:03,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:29:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:29:04,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:29:04,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087636833] [2023-08-04 04:29:04,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087636833] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:29:04,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319256245] [2023-08-04 04:29:04,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:04,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:29:04,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:29:04,004 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:29:04,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 04:29:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:04,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-04 04:29:04,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:29:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:29:04,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:29:04,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:29:04,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319256245] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:29:04,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:29:04,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-04 04:29:04,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971530404] [2023-08-04 04:29:04,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:29:04,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-04 04:29:04,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:29:04,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-04 04:29:04,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-08-04 04:29:04,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 222 [2023-08-04 04:29:04,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 224 transitions, 2239 flow. Second operand has 16 states, 16 states have (on average 84.25) internal successors, (1348), 16 states have internal predecessors, (1348), 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 04:29:04,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:29:04,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 222 [2023-08-04 04:29:04,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:29:07,154 INFO L124 PetriNetUnfolderBase]: 9549/15753 cut-off events. [2023-08-04 04:29:07,155 INFO L125 PetriNetUnfolderBase]: For 228974/228998 co-relation queries the response was YES. [2023-08-04 04:29:07,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66704 conditions, 15753 events. 9549/15753 cut-off events. For 228974/228998 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 115557 event pairs, 1212 based on Foata normal form. 68/14130 useless extension candidates. Maximal degree in co-relation 64543. Up to 5871 conditions per place. [2023-08-04 04:29:07,326 INFO L140 encePairwiseOnDemand]: 207/222 looper letters, 427 selfloop transitions, 161 changer transitions 12/608 dead transitions. [2023-08-04 04:29:07,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 608 transitions, 6736 flow [2023-08-04 04:29:07,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-04 04:29:07,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-04 04:29:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2498 transitions. [2023-08-04 04:29:07,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4167500834167501 [2023-08-04 04:29:07,332 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2498 transitions. [2023-08-04 04:29:07,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2498 transitions. [2023-08-04 04:29:07,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:29:07,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2498 transitions. [2023-08-04 04:29:07,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 92.51851851851852) internal successors, (2498), 27 states have internal predecessors, (2498), 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 04:29:07,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 222.0) internal successors, (6216), 28 states have internal predecessors, (6216), 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 04:29:07,347 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 222.0) internal successors, (6216), 28 states have internal predecessors, (6216), 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 04:29:07,347 INFO L175 Difference]: Start difference. First operand has 176 places, 224 transitions, 2239 flow. Second operand 27 states and 2498 transitions. [2023-08-04 04:29:07,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 608 transitions, 6736 flow [2023-08-04 04:29:07,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 608 transitions, 5989 flow, removed 303 selfloop flow, removed 14 redundant places. [2023-08-04 04:29:07,953 INFO L231 Difference]: Finished difference. Result has 206 places, 319 transitions, 3211 flow [2023-08-04 04:29:07,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3211, PETRI_PLACES=206, PETRI_TRANSITIONS=319} [2023-08-04 04:29:07,954 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-08-04 04:29:07,954 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 319 transitions, 3211 flow [2023-08-04 04:29:07,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.25) internal successors, (1348), 16 states have internal predecessors, (1348), 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 04:29:07,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:29:07,955 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:29:07,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 04:29:08,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:29:08,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:29:08,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:29:08,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1410593734, now seen corresponding path program 2 times [2023-08-04 04:29:08,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:29:08,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315645372] [2023-08-04 04:29:08,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:08,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:29:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:29:08,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:29:08,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315645372] [2023-08-04 04:29:08,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315645372] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:29:08,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199059985] [2023-08-04 04:29:08,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 04:29:08,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:29:08,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:29:08,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:29:08,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 04:29:08,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 04:29:08,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:29:08,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-04 04:29:08,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:29:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:29:08,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:29:08,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199059985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:29:08,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:29:08,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2023-08-04 04:29:08,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940343934] [2023-08-04 04:29:08,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:29:08,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-04 04:29:08,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:29:08,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-04 04:29:08,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-08-04 04:29:08,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 222 [2023-08-04 04:29:08,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 319 transitions, 3211 flow. Second operand has 10 states, 10 states have (on average 82.6) internal successors, (826), 10 states have internal predecessors, (826), 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 04:29:08,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:29:08,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 222 [2023-08-04 04:29:08,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:29:12,061 INFO L124 PetriNetUnfolderBase]: 12074/19538 cut-off events. [2023-08-04 04:29:12,061 INFO L125 PetriNetUnfolderBase]: For 336118/336162 co-relation queries the response was YES. [2023-08-04 04:29:12,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86087 conditions, 19538 events. 12074/19538 cut-off events. For 336118/336162 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 141886 event pairs, 2604 based on Foata normal form. 236/17911 useless extension candidates. Maximal degree in co-relation 83009. Up to 10075 conditions per place. [2023-08-04 04:29:12,206 INFO L140 encePairwiseOnDemand]: 210/222 looper letters, 427 selfloop transitions, 32 changer transitions 91/557 dead transitions. [2023-08-04 04:29:12,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 557 transitions, 6435 flow [2023-08-04 04:29:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-04 04:29:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-04 04:29:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1561 transitions. [2023-08-04 04:29:12,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41361950185479596 [2023-08-04 04:29:12,210 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1561 transitions. [2023-08-04 04:29:12,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1561 transitions. [2023-08-04 04:29:12,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:29:12,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1561 transitions. [2023-08-04 04:29:12,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 91.82352941176471) internal successors, (1561), 17 states have internal predecessors, (1561), 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 04:29:12,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 222.0) internal successors, (3996), 18 states have internal predecessors, (3996), 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 04:29:12,230 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 222.0) internal successors, (3996), 18 states have internal predecessors, (3996), 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 04:29:12,230 INFO L175 Difference]: Start difference. First operand has 206 places, 319 transitions, 3211 flow. Second operand 17 states and 1561 transitions. [2023-08-04 04:29:12,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 557 transitions, 6435 flow [2023-08-04 04:29:13,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 557 transitions, 6286 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-08-04 04:29:13,159 INFO L231 Difference]: Finished difference. Result has 227 places, 281 transitions, 2859 flow [2023-08-04 04:29:13,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=3095, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2859, PETRI_PLACES=227, PETRI_TRANSITIONS=281} [2023-08-04 04:29:13,160 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2023-08-04 04:29:13,160 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 281 transitions, 2859 flow [2023-08-04 04:29:13,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 82.6) internal successors, (826), 10 states have internal predecessors, (826), 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 04:29:13,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:29:13,161 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:29:13,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 04:29:13,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-04 04:29:13,363 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:29:13,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:29:13,363 INFO L85 PathProgramCache]: Analyzing trace with hash 781593448, now seen corresponding path program 1 times [2023-08-04 04:29:13,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:29:13,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78438716] [2023-08-04 04:29:13,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:13,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:29:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:13,420 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 04:29:13,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:29:13,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78438716] [2023-08-04 04:29:13,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78438716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:29:13,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:29:13,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:29:13,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805309429] [2023-08-04 04:29:13,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:29:13,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:29:13,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:29:13,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:29:13,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:29:13,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 222 [2023-08-04 04:29:13,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 281 transitions, 2859 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 04:29:13,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:29:13,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 222 [2023-08-04 04:29:13,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:29:14,356 INFO L124 PetriNetUnfolderBase]: 3132/5424 cut-off events. [2023-08-04 04:29:14,356 INFO L125 PetriNetUnfolderBase]: For 136770/136778 co-relation queries the response was YES. [2023-08-04 04:29:14,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26005 conditions, 5424 events. 3132/5424 cut-off events. For 136770/136778 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 35612 event pairs, 1334 based on Foata normal form. 32/4957 useless extension candidates. Maximal degree in co-relation 25908. Up to 3350 conditions per place. [2023-08-04 04:29:14,399 INFO L140 encePairwiseOnDemand]: 217/222 looper letters, 146 selfloop transitions, 53 changer transitions 0/208 dead transitions. [2023-08-04 04:29:14,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 208 transitions, 2426 flow [2023-08-04 04:29:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:29:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:29:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2023-08-04 04:29:14,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481981981981982 [2023-08-04 04:29:14,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2023-08-04 04:29:14,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2023-08-04 04:29:14,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:29:14,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2023-08-04 04:29:14,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 04:29:14,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 04:29:14,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 04:29:14,404 INFO L175 Difference]: Start difference. First operand has 227 places, 281 transitions, 2859 flow. Second operand 3 states and 321 transitions. [2023-08-04 04:29:14,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 208 transitions, 2426 flow [2023-08-04 04:29:14,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 208 transitions, 2172 flow, removed 72 selfloop flow, removed 34 redundant places. [2023-08-04 04:29:14,828 INFO L231 Difference]: Finished difference. Result has 175 places, 185 transitions, 1672 flow [2023-08-04 04:29:14,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1672, PETRI_PLACES=175, PETRI_TRANSITIONS=185} [2023-08-04 04:29:14,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2023-08-04 04:29:14,829 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 185 transitions, 1672 flow [2023-08-04 04:29:14,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 04:29:14,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:29:14,829 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 04:29:14,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 04:29:14,830 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:29:14,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:29:14,830 INFO L85 PathProgramCache]: Analyzing trace with hash 594577436, now seen corresponding path program 1 times [2023-08-04 04:29:14,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:29:14,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498616961] [2023-08-04 04:29:14,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:14,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:29:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:14,936 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 04:29:14,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:29:14,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498616961] [2023-08-04 04:29:14,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498616961] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:29:14,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845515590] [2023-08-04 04:29:14,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:14,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:29:14,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:29:14,939 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:29:14,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 04:29:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:15,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-04 04:29:15,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:29:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:29:15,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:29:15,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845515590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:29:15,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:29:15,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 04:29:15,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764883858] [2023-08-04 04:29:15,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:29:15,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-04 04:29:15,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:29:15,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-04 04:29:15,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-04 04:29:15,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 222 [2023-08-04 04:29:15,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 185 transitions, 1672 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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 04:29:15,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:29:15,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 222 [2023-08-04 04:29:15,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:29:16,043 INFO L124 PetriNetUnfolderBase]: 3705/6155 cut-off events. [2023-08-04 04:29:16,043 INFO L125 PetriNetUnfolderBase]: For 129317/129317 co-relation queries the response was YES. [2023-08-04 04:29:16,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26212 conditions, 6155 events. 3705/6155 cut-off events. For 129317/129317 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 38564 event pairs, 556 based on Foata normal form. 92/5662 useless extension candidates. Maximal degree in co-relation 26141. Up to 2869 conditions per place. [2023-08-04 04:29:16,081 INFO L140 encePairwiseOnDemand]: 214/222 looper letters, 248 selfloop transitions, 18 changer transitions 1/273 dead transitions. [2023-08-04 04:29:16,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 273 transitions, 3058 flow [2023-08-04 04:29:16,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-04 04:29:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-04 04:29:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 811 transitions. [2023-08-04 04:29:16,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4059059059059059 [2023-08-04 04:29:16,084 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 811 transitions. [2023-08-04 04:29:16,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 811 transitions. [2023-08-04 04:29:16,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:29:16,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 811 transitions. [2023-08-04 04:29:16,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.11111111111111) internal successors, (811), 9 states have internal predecessors, (811), 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 04:29:16,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 222.0) internal successors, (2220), 10 states have internal predecessors, (2220), 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 04:29:16,090 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 222.0) internal successors, (2220), 10 states have internal predecessors, (2220), 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 04:29:16,090 INFO L175 Difference]: Start difference. First operand has 175 places, 185 transitions, 1672 flow. Second operand 9 states and 811 transitions. [2023-08-04 04:29:16,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 273 transitions, 3058 flow [2023-08-04 04:29:16,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 273 transitions, 2942 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-04 04:29:16,335 INFO L231 Difference]: Finished difference. Result has 181 places, 187 transitions, 1626 flow [2023-08-04 04:29:16,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1626, PETRI_PLACES=181, PETRI_TRANSITIONS=187} [2023-08-04 04:29:16,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2023-08-04 04:29:16,336 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 187 transitions, 1626 flow [2023-08-04 04:29:16,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 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 04:29:16,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:29:16,336 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 04:29:16,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-04 04:29:16,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:29:16,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:29:16,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:29:16,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1339595488, now seen corresponding path program 1 times [2023-08-04 04:29:16,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:29:16,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389897270] [2023-08-04 04:29:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:16,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:29:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:16,642 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 04:29:16,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:29:16,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389897270] [2023-08-04 04:29:16,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389897270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:29:16,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:29:16,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-04 04:29:16,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566538954] [2023-08-04 04:29:16,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:29:16,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-04 04:29:16,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:29:16,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-04 04:29:16,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-04 04:29:16,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 222 [2023-08-04 04:29:16,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 187 transitions, 1626 flow. Second operand has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 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 04:29:16,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:29:16,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 222 [2023-08-04 04:29:16,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:29:17,514 INFO L124 PetriNetUnfolderBase]: 3845/6401 cut-off events. [2023-08-04 04:29:17,514 INFO L125 PetriNetUnfolderBase]: For 156029/156029 co-relation queries the response was YES. [2023-08-04 04:29:17,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27120 conditions, 6401 events. 3845/6401 cut-off events. For 156029/156029 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 40608 event pairs, 930 based on Foata normal form. 40/5839 useless extension candidates. Maximal degree in co-relation 27049. Up to 4986 conditions per place. [2023-08-04 04:29:17,558 INFO L140 encePairwiseOnDemand]: 214/222 looper letters, 223 selfloop transitions, 12 changer transitions 2/243 dead transitions. [2023-08-04 04:29:17,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 243 transitions, 2432 flow [2023-08-04 04:29:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-04 04:29:17,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-04 04:29:17,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 804 transitions. [2023-08-04 04:29:17,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024024024024024 [2023-08-04 04:29:17,560 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 804 transitions. [2023-08-04 04:29:17,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 804 transitions. [2023-08-04 04:29:17,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:29:17,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 804 transitions. [2023-08-04 04:29:17,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.33333333333333) internal successors, (804), 9 states have internal predecessors, (804), 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 04:29:17,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 222.0) internal successors, (2220), 10 states have internal predecessors, (2220), 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 04:29:17,564 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 222.0) internal successors, (2220), 10 states have internal predecessors, (2220), 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 04:29:17,564 INFO L175 Difference]: Start difference. First operand has 181 places, 187 transitions, 1626 flow. Second operand 9 states and 804 transitions. [2023-08-04 04:29:17,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 243 transitions, 2432 flow [2023-08-04 04:29:17,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 243 transitions, 2412 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-04 04:29:17,838 INFO L231 Difference]: Finished difference. Result has 187 places, 188 transitions, 1648 flow [2023-08-04 04:29:17,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1648, PETRI_PLACES=187, PETRI_TRANSITIONS=188} [2023-08-04 04:29:17,838 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2023-08-04 04:29:17,838 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 188 transitions, 1648 flow [2023-08-04 04:29:17,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 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 04:29:17,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:29:17,839 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:29:17,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 04:29:17,839 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:29:17,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:29:17,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1527103817, now seen corresponding path program 3 times [2023-08-04 04:29:17,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:29:17,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587557674] [2023-08-04 04:29:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:17,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:29:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:18,121 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:29:18,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:29:18,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587557674] [2023-08-04 04:29:18,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587557674] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:29:18,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772320008] [2023-08-04 04:29:18,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 04:29:18,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:29:18,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:29:18,126 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:29:18,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 04:29:18,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-04 04:29:18,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:29:18,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-04 04:29:18,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:29:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-04 04:29:18,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:29:18,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772320008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:29:18,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:29:18,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 18 [2023-08-04 04:29:18,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894947598] [2023-08-04 04:29:18,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:29:18,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:29:18,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:29:18,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:29:18,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-08-04 04:29:18,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 222 [2023-08-04 04:29:18,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 188 transitions, 1648 flow. Second operand has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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 04:29:18,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:29:18,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 222 [2023-08-04 04:29:18,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:29:19,224 INFO L124 PetriNetUnfolderBase]: 3559/5981 cut-off events. [2023-08-04 04:29:19,225 INFO L125 PetriNetUnfolderBase]: For 123137/123137 co-relation queries the response was YES. [2023-08-04 04:29:19,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20176 conditions, 5981 events. 3559/5981 cut-off events. For 123137/123137 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 38705 event pairs, 256 based on Foata normal form. 128/5550 useless extension candidates. Maximal degree in co-relation 20105. Up to 3284 conditions per place. [2023-08-04 04:29:19,262 INFO L140 encePairwiseOnDemand]: 209/222 looper letters, 88 selfloop transitions, 36 changer transitions 153/281 dead transitions. [2023-08-04 04:29:19,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 281 transitions, 2595 flow [2023-08-04 04:29:19,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-04 04:29:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-04 04:29:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 891 transitions. [2023-08-04 04:29:19,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40135135135135136 [2023-08-04 04:29:19,264 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 891 transitions. [2023-08-04 04:29:19,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 891 transitions. [2023-08-04 04:29:19,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:29:19,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 891 transitions. [2023-08-04 04:29:19,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.1) internal successors, (891), 10 states have internal predecessors, (891), 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 04:29:19,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 222.0) internal successors, (2442), 11 states have internal predecessors, (2442), 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 04:29:19,268 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 222.0) internal successors, (2442), 11 states have internal predecessors, (2442), 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 04:29:19,268 INFO L175 Difference]: Start difference. First operand has 187 places, 188 transitions, 1648 flow. Second operand 10 states and 891 transitions. [2023-08-04 04:29:19,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 281 transitions, 2595 flow [2023-08-04 04:29:19,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 281 transitions, 2315 flow, removed 20 selfloop flow, removed 44 redundant places. [2023-08-04 04:29:19,348 INFO L231 Difference]: Finished difference. Result has 151 places, 70 transitions, 554 flow [2023-08-04 04:29:19,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=554, PETRI_PLACES=151, PETRI_TRANSITIONS=70} [2023-08-04 04:29:19,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2023-08-04 04:29:19,349 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 70 transitions, 554 flow [2023-08-04 04:29:19,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 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 04:29:19,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:29:19,349 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] [2023-08-04 04:29:19,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 04:29:19,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:29:19,550 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:29:19,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:29:19,550 INFO L85 PathProgramCache]: Analyzing trace with hash 740695116, now seen corresponding path program 1 times [2023-08-04 04:29:19,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:29:19,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473879968] [2023-08-04 04:29:19,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:19,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:29:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:19,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:29:19,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:29:19,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473879968] [2023-08-04 04:29:19,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473879968] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:29:19,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558002894] [2023-08-04 04:29:19,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:19,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:29:19,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:29:19,665 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:29:19,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 04:29:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:19,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-04 04:29:19,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:29:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:29:19,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:29:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:29:19,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558002894] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:29:19,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:29:19,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-04 04:29:19,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484109089] [2023-08-04 04:29:19,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:29:19,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-04 04:29:19,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:29:19,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-04 04:29:19,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-08-04 04:29:20,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 222 [2023-08-04 04:29:20,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 70 transitions, 554 flow. Second operand has 15 states, 15 states have (on average 83.8) internal successors, (1257), 15 states have internal predecessors, (1257), 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 04:29:20,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:29:20,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 222 [2023-08-04 04:29:20,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:29:20,628 INFO L124 PetriNetUnfolderBase]: 1818/3016 cut-off events. [2023-08-04 04:29:20,629 INFO L125 PetriNetUnfolderBase]: For 13326/13326 co-relation queries the response was YES. [2023-08-04 04:29:20,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10922 conditions, 3016 events. 1818/3016 cut-off events. For 13326/13326 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 15287 event pairs, 44 based on Foata normal form. 264/3005 useless extension candidates. Maximal degree in co-relation 10892. Up to 595 conditions per place. [2023-08-04 04:29:20,645 INFO L140 encePairwiseOnDemand]: 212/222 looper letters, 166 selfloop transitions, 23 changer transitions 0/193 dead transitions. [2023-08-04 04:29:20,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 193 transitions, 1461 flow [2023-08-04 04:29:20,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-04 04:29:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-04 04:29:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1212 transitions. [2023-08-04 04:29:20,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38996138996138996 [2023-08-04 04:29:20,647 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1212 transitions. [2023-08-04 04:29:20,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1212 transitions. [2023-08-04 04:29:20,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:29:20,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1212 transitions. [2023-08-04 04:29:20,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 86.57142857142857) internal successors, (1212), 14 states have internal predecessors, (1212), 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 04:29:20,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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 04:29:20,653 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 222.0) internal successors, (3330), 15 states have internal predecessors, (3330), 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 04:29:20,653 INFO L175 Difference]: Start difference. First operand has 151 places, 70 transitions, 554 flow. Second operand 14 states and 1212 transitions. [2023-08-04 04:29:20,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 193 transitions, 1461 flow [2023-08-04 04:29:20,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 193 transitions, 1176 flow, removed 35 selfloop flow, removed 38 redundant places. [2023-08-04 04:29:20,711 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 434 flow [2023-08-04 04:29:20,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=434, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2023-08-04 04:29:20,712 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2023-08-04 04:29:20,712 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 434 flow [2023-08-04 04:29:20,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 83.8) internal successors, (1257), 15 states have internal predecessors, (1257), 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 04:29:20,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:29:20,712 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:29:20,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-04 04:29:20,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-04 04:29:20,913 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:29:20,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:29:20,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1492767134, now seen corresponding path program 2 times [2023-08-04 04:29:20,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:29:20,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82764048] [2023-08-04 04:29:20,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:20,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:29:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:29:21,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:29:21,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82764048] [2023-08-04 04:29:21,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82764048] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:29:21,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517143047] [2023-08-04 04:29:21,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 04:29:21,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:29:21,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:29:21,101 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:29:21,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 04:29:21,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 04:29:21,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:29:21,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-04 04:29:21,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:29:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:29:21,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:29:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:29:21,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517143047] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:29:21,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:29:21,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 21 [2023-08-04 04:29:21,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006770177] [2023-08-04 04:29:21,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:29:21,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-04 04:29:21,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:29:21,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-04 04:29:21,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2023-08-04 04:29:21,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 222 [2023-08-04 04:29:21,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 434 flow. Second operand has 23 states, 23 states have (on average 81.08695652173913) internal successors, (1865), 23 states have internal predecessors, (1865), 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 04:29:21,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:29:21,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 222 [2023-08-04 04:29:21,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:29:22,778 INFO L124 PetriNetUnfolderBase]: 2742/4468 cut-off events. [2023-08-04 04:29:22,778 INFO L125 PetriNetUnfolderBase]: For 4010/4010 co-relation queries the response was YES. [2023-08-04 04:29:22,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13479 conditions, 4468 events. 2742/4468 cut-off events. For 4010/4010 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 22978 event pairs, 0 based on Foata normal form. 528/4589 useless extension candidates. Maximal degree in co-relation 13466. Up to 1057 conditions per place. [2023-08-04 04:29:22,800 INFO L140 encePairwiseOnDemand]: 210/222 looper letters, 249 selfloop transitions, 41 changer transitions 0/294 dead transitions. [2023-08-04 04:29:22,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 294 transitions, 1813 flow [2023-08-04 04:29:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-04 04:29:22,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-04 04:29:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1782 transitions. [2023-08-04 04:29:22,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38223938223938225 [2023-08-04 04:29:22,802 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1782 transitions. [2023-08-04 04:29:22,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1782 transitions. [2023-08-04 04:29:22,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:29:22,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1782 transitions. [2023-08-04 04:29:22,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 84.85714285714286) internal successors, (1782), 21 states have internal predecessors, (1782), 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 04:29:22,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 222.0) internal successors, (4884), 22 states have internal predecessors, (4884), 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 04:29:22,811 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 222.0) internal successors, (4884), 22 states have internal predecessors, (4884), 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 04:29:22,811 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 434 flow. Second operand 21 states and 1782 transitions. [2023-08-04 04:29:22,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 294 transitions, 1813 flow [2023-08-04 04:29:22,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 294 transitions, 1738 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-08-04 04:29:22,825 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 503 flow [2023-08-04 04:29:22,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=503, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2023-08-04 04:29:22,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2023-08-04 04:29:22,826 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 503 flow [2023-08-04 04:29:22,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 81.08695652173913) internal successors, (1865), 23 states have internal predecessors, (1865), 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 04:29:22,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:29:22,826 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:29:22,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 04:29:23,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-04 04:29:23,032 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thrErr0ASSERT_VIOLATIONERROR_FUNCTION === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:29:23,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:29:23,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1462928930, now seen corresponding path program 3 times [2023-08-04 04:29:23,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:29:23,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655914627] [2023-08-04 04:29:23,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:23,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:29:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:29:23,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:29:23,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655914627] [2023-08-04 04:29:23,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655914627] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:29:23,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:29:23,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-04 04:29:23,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193357117] [2023-08-04 04:29:23,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:29:23,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-04 04:29:23,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:29:23,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-04 04:29:23,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2023-08-04 04:29:23,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 222 [2023-08-04 04:29:23,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 503 flow. Second operand has 14 states, 14 states have (on average 86.85714285714286) internal successors, (1216), 14 states have internal predecessors, (1216), 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 04:29:23,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:29:23,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 222 [2023-08-04 04:29:23,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:29:23,921 INFO L124 PetriNetUnfolderBase]: 2647/4283 cut-off events. [2023-08-04 04:29:23,921 INFO L125 PetriNetUnfolderBase]: For 4720/4720 co-relation queries the response was YES. [2023-08-04 04:29:23,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13540 conditions, 4283 events. 2647/4283 cut-off events. For 4720/4720 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21894 event pairs, 175 based on Foata normal form. 176/4052 useless extension candidates. Maximal degree in co-relation 13522. Up to 800 conditions per place. [2023-08-04 04:29:23,935 INFO L140 encePairwiseOnDemand]: 216/222 looper letters, 0 selfloop transitions, 0 changer transitions 272/272 dead transitions. [2023-08-04 04:29:23,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 272 transitions, 1711 flow [2023-08-04 04:29:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-04 04:29:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-04 04:29:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1370 transitions. [2023-08-04 04:29:23,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114114114114114 [2023-08-04 04:29:23,939 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1370 transitions. [2023-08-04 04:29:23,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1370 transitions. [2023-08-04 04:29:23,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:29:23,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1370 transitions. [2023-08-04 04:29:23,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 91.33333333333333) internal successors, (1370), 15 states have internal predecessors, (1370), 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 04:29:23,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 222.0) internal successors, (3552), 16 states have internal predecessors, (3552), 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 04:29:23,945 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 222.0) internal successors, (3552), 16 states have internal predecessors, (3552), 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 04:29:23,945 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 503 flow. Second operand 15 states and 1370 transitions. [2023-08-04 04:29:23,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 272 transitions, 1711 flow [2023-08-04 04:29:23,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 272 transitions, 1587 flow, removed 18 selfloop flow, removed 23 redundant places. [2023-08-04 04:29:23,971 INFO L231 Difference]: Finished difference. Result has 83 places, 0 transitions, 0 flow [2023-08-04 04:29:23,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=83, PETRI_TRANSITIONS=0} [2023-08-04 04:29:23,972 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2023-08-04 04:29:23,972 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 0 transitions, 0 flow [2023-08-04 04:29:23,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 86.85714285714286) internal successors, (1216), 14 states have internal predecessors, (1216), 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 04:29:23,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 04:29:23,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 04:29:23,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thrErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 04:29:23,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-04 04:29:23,973 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:29:23,974 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 04:29:23,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 112 transitions, 236 flow [2023-08-04 04:29:23,990 INFO L124 PetriNetUnfolderBase]: 12/139 cut-off events. [2023-08-04 04:29:23,990 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:29:23,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 139 events. 12/139 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2023-08-04 04:29:23,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 112 transitions, 236 flow [2023-08-04 04:29:23,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 112 transitions, 236 flow [2023-08-04 04:29:23,991 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:29:23,991 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 112 transitions, 236 flow [2023-08-04 04:29:23,992 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 112 transitions, 236 flow [2023-08-04 04:29:23,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 112 transitions, 236 flow [2023-08-04 04:29:24,000 INFO L124 PetriNetUnfolderBase]: 12/139 cut-off events. [2023-08-04 04:29:24,001 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:29:24,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 139 events. 12/139 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 241 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2023-08-04 04:29:24,003 INFO L119 LiptonReduction]: Number of co-enabled transitions 4092 [2023-08-04 04:29:26,237 INFO L134 LiptonReduction]: Checked pairs total: 7005 [2023-08-04 04:29:26,237 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-04 04:29:26,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:29:26,238 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;@62a91610, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:29:26,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:29:26,240 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:29:26,241 INFO L124 PetriNetUnfolderBase]: 3/30 cut-off events. [2023-08-04 04:29:26,241 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:29:26,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:29:26,241 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 04:29:26,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:29:26,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:29:26,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1073808642, now seen corresponding path program 1 times [2023-08-04 04:29:26,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:29:26,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77356089] [2023-08-04 04:29:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:26,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:29:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:26,281 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 04:29:26,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:29:26,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77356089] [2023-08-04 04:29:26,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77356089] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:29:26,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:29:26,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:29:26,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912246859] [2023-08-04 04:29:26,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:29:26,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:29:26,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:29:26,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:29:26,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:29:26,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 224 [2023-08-04 04:29:26,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 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 04:29:26,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:29:26,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 224 [2023-08-04 04:29:26,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:29:26,385 INFO L124 PetriNetUnfolderBase]: 405/659 cut-off events. [2023-08-04 04:29:26,385 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 04:29:26,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 659 events. 405/659 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2803 event pairs, 9 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 233. Up to 434 conditions per place. [2023-08-04 04:29:26,386 INFO L140 encePairwiseOnDemand]: 220/224 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2023-08-04 04:29:26,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 60 transitions, 238 flow [2023-08-04 04:29:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:29:26,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:29:26,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 521 transitions. [2023-08-04 04:29:26,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46517857142857144 [2023-08-04 04:29:26,388 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 521 transitions. [2023-08-04 04:29:26,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 521 transitions. [2023-08-04 04:29:26,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:29:26,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 521 transitions. [2023-08-04 04:29:26,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 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 04:29:26,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 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 04:29:26,391 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 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 04:29:26,391 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 72 flow. Second operand 5 states and 521 transitions. [2023-08-04 04:29:26,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 60 transitions, 238 flow [2023-08-04 04:29:26,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 60 transitions, 237 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:29:26,392 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2023-08-04 04:29:26,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2023-08-04 04:29:26,393 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2023-08-04 04:29:26,393 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2023-08-04 04:29:26,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 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 04:29:26,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:29:26,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-04 04:29:26,393 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:29:26,394 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:29:26,394 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:29:26,394 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:29:26,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:29:26 BasicIcfg [2023-08-04 04:29:26,399 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:29:26,400 INFO L158 Benchmark]: Toolchain (without parser) took 42066.44ms. Allocated memory was 337.6MB in the beginning and 7.6GB in the end (delta: 7.2GB). Free memory was 289.0MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 2.6GB. Max. memory is 16.0GB. [2023-08-04 04:29:26,400 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 337.6MB. Free memory is still 290.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:29:26,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.38ms. Allocated memory is still 337.6MB. Free memory was 289.0MB in the beginning and 260.4MB in the end (delta: 28.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-04 04:29:26,400 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.38ms. Allocated memory is still 337.6MB. Free memory was 260.4MB in the beginning and 258.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:29:26,400 INFO L158 Benchmark]: Boogie Preprocessor took 43.01ms. Allocated memory is still 337.6MB. Free memory was 258.0MB in the beginning and 256.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:29:26,401 INFO L158 Benchmark]: RCFGBuilder took 422.15ms. Allocated memory was 337.6MB in the beginning and 480.2MB in the end (delta: 142.6MB). Free memory was 256.6MB in the beginning and 442.4MB in the end (delta: -185.8MB). Peak memory consumption was 21.8MB. Max. memory is 16.0GB. [2023-08-04 04:29:26,402 INFO L158 Benchmark]: TraceAbstraction took 40894.50ms. Allocated memory was 480.2MB in the beginning and 7.6GB in the end (delta: 7.1GB). Free memory was 442.4MB in the beginning and 4.9GB in the end (delta: -4.5GB). Peak memory consumption was 2.6GB. Max. memory is 16.0GB. [2023-08-04 04:29:26,404 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 337.6MB. Free memory is still 290.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 638.38ms. Allocated memory is still 337.6MB. Free memory was 289.0MB in the beginning and 260.4MB in the end (delta: 28.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.38ms. Allocated memory is still 337.6MB. Free memory was 260.4MB in the beginning and 258.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 43.01ms. Allocated memory is still 337.6MB. Free memory was 258.0MB in the beginning and 256.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 422.15ms. Allocated memory was 337.6MB in the beginning and 480.2MB in the end (delta: 142.6MB). Free memory was 256.6MB in the beginning and 442.4MB in the end (delta: -185.8MB). Peak memory consumption was 21.8MB. Max. memory is 16.0GB. * TraceAbstraction took 40894.50ms. Allocated memory was 480.2MB in the beginning and 7.6GB in the end (delta: 7.1GB). Free memory was 442.4MB in the beginning and 4.9GB in the end (delta: -4.5GB). Peak memory consumption was 2.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 77 PlacesBefore, 12 PlacesAfterwards, 80 TransitionsBefore, 10 TransitionsAfterwards, 1054 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 9 ConcurrentYvCompositions, 5 ChoiceCompositions, 85 TotalNumberOfCompositions, 863 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 814, independent: 803, independent conditional: 0, independent unconditional: 803, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 561, independent: 557, independent conditional: 0, independent unconditional: 557, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 814, independent: 246, independent conditional: 0, independent unconditional: 246, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 561, unknown conditional: 0, unknown unconditional: 561] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 77 PlacesBefore, 12 PlacesAfterwards, 80 TransitionsBefore, 10 TransitionsAfterwards, 1054 CoEnabledTransitionPairs, 7 FixpointIterations, 30 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 10 ConcurrentYvCompositions, 5 ChoiceCompositions, 87 TotalNumberOfCompositions, 919 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 870, independent: 855, independent conditional: 0, independent unconditional: 855, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 560, independent: 555, independent conditional: 0, independent unconditional: 555, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 870, independent: 300, independent conditional: 0, independent unconditional: 300, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 560, unknown conditional: 0, unknown unconditional: 560] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 107 PlacesBefore, 30 PlacesAfterwards, 112 TransitionsBefore, 29 TransitionsAfterwards, 4092 CoEnabledTransitionPairs, 7 FixpointIterations, 33 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 14 ConcurrentYvCompositions, 6 ChoiceCompositions, 110 TotalNumberOfCompositions, 7566 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5300, independent: 5087, independent conditional: 0, independent unconditional: 5087, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2182, independent: 2151, independent conditional: 0, independent unconditional: 2151, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5300, independent: 2936, independent conditional: 0, independent unconditional: 2936, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 2182, unknown conditional: 0, unknown unconditional: 2182] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 146, Positive conditional cache size: 0, Positive unconditional cache size: 146, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 107 PlacesBefore, 31 PlacesAfterwards, 112 TransitionsBefore, 30 TransitionsAfterwards, 4092 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 112 TotalNumberOfCompositions, 7005 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4454, independent: 4279, independent conditional: 0, independent unconditional: 4279, dependent: 175, dependent conditional: 0, dependent unconditional: 175, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2137, independent: 2107, independent conditional: 0, independent unconditional: 2107, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4454, independent: 2172, independent conditional: 0, independent unconditional: 2172, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 2137, unknown conditional: 0, unknown unconditional: 2137] , Statistics on independence cache: Total cache size (in pairs): 150, Positive cache size: 134, Positive conditional cache size: 0, Positive unconditional cache size: 134, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 998]: 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, 103 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: 4.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 152 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 117 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 291 IncrementalHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 0 mSDtfsCounter, 291 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=1, InterpolantAutomatonStates: 10, 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, 0.9s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 15 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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, 131 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: 30.9s, OverallIterations: 15, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 22.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4464 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4083 mSDsluCounter, 1851 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1746 mSDsCounter, 255 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10964 IncrementalHoareTripleChecker+Invalid, 11219 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 255 mSolverCounterUnsat, 105 mSDtfsCounter, 10964 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 432 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2093 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3211occurred in iteration=7, InterpolantAutomatonStates: 227, 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, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 397 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 454 ConstructedInterpolants, 0 QuantifiedInterpolants, 2600 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1255 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 28 InterpolantComputations, 10 PerfectInterpolantSequences, 199/290 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, 103 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: 2.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 131 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: 2.4s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred 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, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 04:29:26,432 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...