/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/goblint-regression_28-race_reach_20-callback_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 03:49:33,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 03:49:33,707 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 03:49:33,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 03:49:33,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 03:49:33,715 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 03:49:33,715 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 03:49:33,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 03:49:33,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 03:49:33,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 03:49:33,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 03:49:33,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 03:49:33,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 03:49:33,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 03:49:33,757 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 03:49:33,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 03:49:33,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 03:49:33,758 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 03:49:33,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 03:49:33,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 03:49:33,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 03:49:33,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 03:49:33,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 03:49:33,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 03:49:33,759 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 03:49:33,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 03:49:33,760 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 03:49:33,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 03:49:33,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 03:49:33,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 03:49:33,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:49:33,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 03:49:33,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 03:49:33,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 03:49:33,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 03:49:33,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 03:49:33,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 03:49:33,763 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 03:49:33,763 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 03:49:33,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 03:49:33,763 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 03:49:33,764 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 03:49:33,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 03:49:34,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 03:49:34,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 03:49:34,027 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 03:49:34,028 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 03:49:34,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_20-callback_racefree_bound2.i [2023-08-04 03:49:35,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 03:49:35,398 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 03:49:35,399 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_20-callback_racefree_bound2.i [2023-08-04 03:49:35,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/353e42716/1b531fd5afcf4c4881255daab66f0c8b/FLAG840656cd6 [2023-08-04 03:49:35,770 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/353e42716/1b531fd5afcf4c4881255daab66f0c8b [2023-08-04 03:49:35,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 03:49:35,774 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 03:49:35,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 03:49:35,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 03:49:35,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 03:49:35,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:49:35" (1/1) ... [2023-08-04 03:49:35,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b6f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:35, skipping insertion in model container [2023-08-04 03:49:35,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:49:35" (1/1) ... [2023-08-04 03:49:35,823 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 03:49:36,132 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/goblint-regression_28-race_reach_20-callback_racefree_bound2.i[30212,30225] [2023-08-04 03:49:36,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:49:36,170 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 03:49:36,204 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-04 03:49:36,206 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-04 03:49:36,223 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/goblint-regression_28-race_reach_20-callback_racefree_bound2.i[30212,30225] [2023-08-04 03:49:36,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:49:36,268 WARN L667 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 03:49:36,274 INFO L206 MainTranslator]: Completed translation [2023-08-04 03:49:36,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:36 WrapperNode [2023-08-04 03:49:36,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 03:49:36,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 03:49:36,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 03:49:36,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 03:49:36,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:36" (1/1) ... [2023-08-04 03:49:36,296 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:36" (1/1) ... [2023-08-04 03:49:36,314 INFO L138 Inliner]: procedures = 173, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 135 [2023-08-04 03:49:36,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 03:49:36,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 03:49:36,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 03:49:36,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 03:49:36,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:36" (1/1) ... [2023-08-04 03:49:36,322 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:36" (1/1) ... [2023-08-04 03:49:36,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:36" (1/1) ... [2023-08-04 03:49:36,325 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:36" (1/1) ... [2023-08-04 03:49:36,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:36" (1/1) ... [2023-08-04 03:49:36,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:36" (1/1) ... [2023-08-04 03:49:36,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:36" (1/1) ... [2023-08-04 03:49:36,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:36" (1/1) ... [2023-08-04 03:49:36,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 03:49:36,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 03:49:36,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 03:49:36,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 03:49:36,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:36" (1/1) ... [2023-08-04 03:49:36,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:49:36,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:49:36,379 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 03:49:36,385 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 03:49:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 03:49:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 03:49:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 03:49:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 03:49:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 03:49:36,404 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 03:49:36,404 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 03:49:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 03:49:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 03:49:36,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 03:49:36,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 03:49:36,406 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 03:49:36,511 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 03:49:36,512 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 03:49:36,677 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 03:49:36,683 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 03:49:36,684 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-04 03:49:36,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:49:36 BoogieIcfgContainer [2023-08-04 03:49:36,686 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 03:49:36,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 03:49:36,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 03:49:36,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 03:49:36,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 03:49:35" (1/3) ... [2023-08-04 03:49:36,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156798a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:49:36, skipping insertion in model container [2023-08-04 03:49:36,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:49:36" (2/3) ... [2023-08-04 03:49:36,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156798a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:49:36, skipping insertion in model container [2023-08-04 03:49:36,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:49:36" (3/3) ... [2023-08-04 03:49:36,696 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_20-callback_racefree_bound2.i [2023-08-04 03:49:36,704 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 03:49:36,714 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 03:49:36,714 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 03:49:36,714 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 03:49:36,791 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 03:49:36,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 137 transitions, 282 flow [2023-08-04 03:49:36,876 INFO L124 PetriNetUnfolderBase]: 26/207 cut-off events. [2023-08-04 03:49:36,876 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 03:49:36,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 207 events. 26/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 534 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-04 03:49:36,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 137 transitions, 282 flow [2023-08-04 03:49:36,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 132 transitions, 269 flow [2023-08-04 03:49:36,900 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:49:36,910 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 132 transitions, 269 flow [2023-08-04 03:49:36,916 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 132 transitions, 269 flow [2023-08-04 03:49:36,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 132 transitions, 269 flow [2023-08-04 03:49:36,974 INFO L124 PetriNetUnfolderBase]: 25/202 cut-off events. [2023-08-04 03:49:36,974 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:49:36,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 202 events. 25/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 496 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-04 03:49:36,978 INFO L119 LiptonReduction]: Number of co-enabled transitions 3040 [2023-08-04 03:49:40,020 INFO L134 LiptonReduction]: Checked pairs total: 4319 [2023-08-04 03:49:40,021 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-08-04 03:49:40,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 03:49:40,038 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;@13cbec0d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:49:40,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 03:49:40,043 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:49:40,043 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2023-08-04 03:49:40,043 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:49:40,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:40,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 03:49:40,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:49:40,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:40,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2020158016, now seen corresponding path program 1 times [2023-08-04 03:49:40,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:40,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041987067] [2023-08-04 03:49:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:40,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:40,404 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 03:49:40,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:49:40,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041987067] [2023-08-04 03:49:40,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041987067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:49:40,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:49:40,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 03:49:40,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296546018] [2023-08-04 03:49:40,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:49:40,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:49:40,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:49:40,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:49:40,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:49:40,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 258 [2023-08-04 03:49:40,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 34 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 03:49:40,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:49:40,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 258 [2023-08-04 03:49:40,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:49:40,530 INFO L124 PetriNetUnfolderBase]: 88/207 cut-off events. [2023-08-04 03:49:40,530 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:49:40,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 207 events. 88/207 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 719 event pairs, 32 based on Foata normal form. 29/194 useless extension candidates. Maximal degree in co-relation 356. Up to 122 conditions per place. [2023-08-04 03:49:40,535 INFO L140 encePairwiseOnDemand]: 245/258 looper letters, 20 selfloop transitions, 2 changer transitions 8/32 dead transitions. [2023-08-04 03:49:40,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 127 flow [2023-08-04 03:49:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:49:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:49:40,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2023-08-04 03:49:40,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.520671834625323 [2023-08-04 03:49:40,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2023-08-04 03:49:40,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2023-08-04 03:49:40,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:49:40,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2023-08-04 03:49:40,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 03:49:40,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 03:49:40,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 03:49:40,582 INFO L175 Difference]: Start difference. First operand has 26 places, 34 transitions, 73 flow. Second operand 3 states and 403 transitions. [2023-08-04 03:49:40,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 127 flow [2023-08-04 03:49:40,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 127 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:49:40,586 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 53 flow [2023-08-04 03:49:40,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-04 03:49:40,591 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-04 03:49:40,592 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 53 flow [2023-08-04 03:49:40,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 03:49:40,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:40,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:49:40,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 03:49:40,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:49:40,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:40,600 INFO L85 PathProgramCache]: Analyzing trace with hash -825459031, now seen corresponding path program 1 times [2023-08-04 03:49:40,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:40,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792105848] [2023-08-04 03:49:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:40,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:40,701 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 03:49:40,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:49:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792105848] [2023-08-04 03:49:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792105848] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:49:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898476865] [2023-08-04 03:49:40,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:40,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:49:40,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:49:40,709 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 03:49:40,733 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 03:49:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:40,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:49:40,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:49:40,869 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 03:49:40,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:49:40,894 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 03:49:40,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898476865] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:49:40,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:49:40,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 03:49:40,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992441072] [2023-08-04 03:49:40,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:49:40,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:49:40,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:49:40,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:49:40,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:49:40,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 258 [2023-08-04 03:49:40,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states 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 03:49:40,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:49:40,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 258 [2023-08-04 03:49:40,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:49:40,934 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-08-04 03:49:40,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:49:40,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 21. Up to 6 conditions per place. [2023-08-04 03:49:40,935 INFO L140 encePairwiseOnDemand]: 255/258 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-04 03:49:40,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 8 transitions, 36 flow [2023-08-04 03:49:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:49:40,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:49:40,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 477 transitions. [2023-08-04 03:49:40,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4622093023255814 [2023-08-04 03:49:40,942 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 477 transitions. [2023-08-04 03:49:40,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 477 transitions. [2023-08-04 03:49:40,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:49:40,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 477 transitions. [2023-08-04 03:49:40,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 states 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 03:49:40,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states 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 03:49:40,950 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states 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 03:49:40,951 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 53 flow. Second operand 4 states and 477 transitions. [2023-08-04 03:49:40,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 8 transitions, 36 flow [2023-08-04 03:49:40,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:49:40,952 INFO L231 Difference]: Finished difference. Result has 13 places, 0 transitions, 0 flow [2023-08-04 03:49:40,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=13, PETRI_TRANSITIONS=0} [2023-08-04 03:49:40,953 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -13 predicate places. [2023-08-04 03:49:40,953 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 0 transitions, 0 flow [2023-08-04 03:49:40,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states 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 03:49:40,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-04 03:49:40,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-04 03:49:40,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 03:49:41,161 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 03:49:41,162 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 03:49:41,164 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-08-04 03:49:41,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 137 transitions, 282 flow [2023-08-04 03:49:41,192 INFO L124 PetriNetUnfolderBase]: 26/207 cut-off events. [2023-08-04 03:49:41,192 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 03:49:41,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 207 events. 26/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 534 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-04 03:49:41,193 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 137 transitions, 282 flow [2023-08-04 03:49:41,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 132 transitions, 269 flow [2023-08-04 03:49:41,196 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:49:41,196 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 132 transitions, 269 flow [2023-08-04 03:49:41,196 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 132 transitions, 269 flow [2023-08-04 03:49:41,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 132 transitions, 269 flow [2023-08-04 03:49:41,215 INFO L124 PetriNetUnfolderBase]: 25/202 cut-off events. [2023-08-04 03:49:41,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:49:41,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 202 events. 25/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 496 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-08-04 03:49:41,218 INFO L119 LiptonReduction]: Number of co-enabled transitions 3040 [2023-08-04 03:49:44,023 INFO L134 LiptonReduction]: Checked pairs total: 4419 [2023-08-04 03:49:44,023 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-08-04 03:49:44,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:49:44,031 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;@13cbec0d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:49:44,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:49:44,037 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:49:44,037 INFO L124 PetriNetUnfolderBase]: 9/33 cut-off events. [2023-08-04 03:49:44,037 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:49:44,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:44,037 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 03:49:44,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:49:44,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:44,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1524458514, now seen corresponding path program 1 times [2023-08-04 03:49:44,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:44,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011072967] [2023-08-04 03:49:44,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:44,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:49:44,066 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:49:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:49:44,118 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:49:44,118 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:49:44,118 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 03:49:44,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 03:49:44,119 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 03:49:44,119 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 03:49:44,120 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 03:49:44,120 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 03:49:44,135 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-04 03:49:44,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-04 03:49:44,164 INFO L124 PetriNetUnfolderBase]: 43/323 cut-off events. [2023-08-04 03:49:44,164 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 03:49:44,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 323 events. 43/323 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1108 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-04 03:49:44,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 159 transitions, 336 flow [2023-08-04 03:49:44,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 159 transitions, 336 flow [2023-08-04 03:49:44,167 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:49:44,167 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-04 03:49:44,168 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-04 03:49:44,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-04 03:49:44,193 INFO L124 PetriNetUnfolderBase]: 43/323 cut-off events. [2023-08-04 03:49:44,193 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 03:49:44,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 323 events. 43/323 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1108 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-04 03:49:44,199 INFO L119 LiptonReduction]: Number of co-enabled transitions 7320 [2023-08-04 03:49:46,931 INFO L134 LiptonReduction]: Checked pairs total: 12194 [2023-08-04 03:49:46,931 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-04 03:49:46,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 03:49:46,934 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;@13cbec0d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:49:46,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 03:49:46,936 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:49:46,937 INFO L124 PetriNetUnfolderBase]: 8/31 cut-off events. [2023-08-04 03:49:46,937 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 03:49:46,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:46,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 03:49:46,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:49:46,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:46,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2010868593, now seen corresponding path program 1 times [2023-08-04 03:49:46,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:46,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468551923] [2023-08-04 03:49:46,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:46,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:47,010 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 03:49:47,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:49:47,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468551923] [2023-08-04 03:49:47,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468551923] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:49:47,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:49:47,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 03:49:47,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147216229] [2023-08-04 03:49:47,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:49:47,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:49:47,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:49:47,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:49:47,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:49:47,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 294 [2023-08-04 03:49:47,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 49 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 03:49:47,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:49:47,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 294 [2023-08-04 03:49:47,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:49:47,336 INFO L124 PetriNetUnfolderBase]: 1919/3175 cut-off events. [2023-08-04 03:49:47,336 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-04 03:49:47,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6326 conditions, 3175 events. 1919/3175 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 16005 event pairs, 823 based on Foata normal form. 197/2721 useless extension candidates. Maximal degree in co-relation 2292. Up to 2046 conditions per place. [2023-08-04 03:49:47,349 INFO L140 encePairwiseOnDemand]: 278/294 looper letters, 46 selfloop transitions, 2 changer transitions 7/58 dead transitions. [2023-08-04 03:49:47,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 58 transitions, 248 flow [2023-08-04 03:49:47,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:49:47,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:49:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-08-04 03:49:47,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5430839002267573 [2023-08-04 03:49:47,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-08-04 03:49:47,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-08-04 03:49:47,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:49:47,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-08-04 03:49:47,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states 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 03:49:47,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states 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 03:49:47,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states 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 03:49:47,360 INFO L175 Difference]: Start difference. First operand has 39 places, 49 transitions, 116 flow. Second operand 3 states and 479 transitions. [2023-08-04 03:49:47,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 58 transitions, 248 flow [2023-08-04 03:49:47,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 248 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:49:47,362 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 104 flow [2023-08-04 03:49:47,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-04 03:49:47,364 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-04 03:49:47,364 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 104 flow [2023-08-04 03:49:47,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 03:49:47,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:47,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:49:47,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 03:49:47,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:49:47,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:47,367 INFO L85 PathProgramCache]: Analyzing trace with hash -265366446, now seen corresponding path program 1 times [2023-08-04 03:49:47,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:47,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918529746] [2023-08-04 03:49:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:47,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:47,430 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 03:49:47,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:49:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918529746] [2023-08-04 03:49:47,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918529746] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:49:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866086587] [2023-08-04 03:49:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:47,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:49:47,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:49:47,432 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 03:49:47,443 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 03:49:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:47,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:49:47,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:49:47,531 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 03:49:47,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:49:47,550 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 03:49:47,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866086587] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:49:47,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:49:47,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 03:49:47,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116173113] [2023-08-04 03:49:47,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:49:47,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:49:47,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:49:47,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:49:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:49:47,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 294 [2023-08-04 03:49:47,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states 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 03:49:47,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:49:47,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 294 [2023-08-04 03:49:47,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:49:47,801 INFO L124 PetriNetUnfolderBase]: 1809/3013 cut-off events. [2023-08-04 03:49:47,801 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2023-08-04 03:49:47,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6338 conditions, 3013 events. 1809/3013 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 14903 event pairs, 266 based on Foata normal form. 0/2590 useless extension candidates. Maximal degree in co-relation 2074. Up to 2694 conditions per place. [2023-08-04 03:49:47,815 INFO L140 encePairwiseOnDemand]: 290/294 looper letters, 49 selfloop transitions, 3 changer transitions 1/56 dead transitions. [2023-08-04 03:49:47,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 246 flow [2023-08-04 03:49:47,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:49:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:49:47,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 586 transitions. [2023-08-04 03:49:47,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49829931972789115 [2023-08-04 03:49:47,818 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 586 transitions. [2023-08-04 03:49:47,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 586 transitions. [2023-08-04 03:49:47,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:49:47,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 586 transitions. [2023-08-04 03:49:47,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 03:49:47,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 03:49:47,822 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 03:49:47,822 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 104 flow. Second operand 4 states and 586 transitions. [2023-08-04 03:49:47,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 246 flow [2023-08-04 03:49:47,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:49:47,826 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 120 flow [2023-08-04 03:49:47,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=100, 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=4, PETRI_FLOW=120, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-04 03:49:47,828 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-04 03:49:47,828 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 120 flow [2023-08-04 03:49:47,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states 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 03:49:47,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:47,828 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:49:47,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 03:49:48,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:49:48,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:49:48,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:48,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1864161438, now seen corresponding path program 1 times [2023-08-04 03:49:48,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:48,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788045293] [2023-08-04 03:49:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:48,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 03:49:48,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:49:48,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788045293] [2023-08-04 03:49:48,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788045293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:49:48,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:49:48,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 03:49:48,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961535967] [2023-08-04 03:49:48,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:49:48,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 03:49:48,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:49:48,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 03:49:48,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 03:49:48,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 294 [2023-08-04 03:49:48,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 0 states have call successors, (0), 0 states 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 03:49:48,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:49:48,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 294 [2023-08-04 03:49:48,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:49:48,345 INFO L124 PetriNetUnfolderBase]: 342/759 cut-off events. [2023-08-04 03:49:48,346 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2023-08-04 03:49:48,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1696 conditions, 759 events. 342/759 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3720 event pairs, 58 based on Foata normal form. 128/746 useless extension candidates. Maximal degree in co-relation 1003. Up to 584 conditions per place. [2023-08-04 03:49:48,348 INFO L140 encePairwiseOnDemand]: 287/294 looper letters, 40 selfloop transitions, 7 changer transitions 1/51 dead transitions. [2023-08-04 03:49:48,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 263 flow [2023-08-04 03:49:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:49:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:49:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 568 transitions. [2023-08-04 03:49:48,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2023-08-04 03:49:48,350 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 568 transitions. [2023-08-04 03:49:48,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 568 transitions. [2023-08-04 03:49:48,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:49:48,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 568 transitions. [2023-08-04 03:49:48,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states 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 03:49:48,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 03:49:48,355 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 03:49:48,355 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 120 flow. Second operand 4 states and 568 transitions. [2023-08-04 03:49:48,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 263 flow [2023-08-04 03:49:48,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:49:48,357 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 126 flow [2023-08-04 03:49:48,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-08-04 03:49:48,357 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2023-08-04 03:49:48,357 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 126 flow [2023-08-04 03:49:48,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 0 states have call successors, (0), 0 states 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 03:49:48,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:48,358 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:49:48,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 03:49:48,358 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:49:48,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:48,359 INFO L85 PathProgramCache]: Analyzing trace with hash 2083348130, now seen corresponding path program 1 times [2023-08-04 03:49:48,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:48,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640437166] [2023-08-04 03:49:48,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:48,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:48,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 03:49:48,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:49:48,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640437166] [2023-08-04 03:49:48,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640437166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:49:48,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:49:48,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:49:48,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767628389] [2023-08-04 03:49:48,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:49:48,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 03:49:48,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:49:48,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 03:49:48,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 03:49:48,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 294 [2023-08-04 03:49:48,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 03:49:48,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:49:48,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 294 [2023-08-04 03:49:48,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:49:48,565 INFO L124 PetriNetUnfolderBase]: 306/705 cut-off events. [2023-08-04 03:49:48,566 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2023-08-04 03:49:48,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 705 events. 306/705 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3085 event pairs, 262 based on Foata normal form. 24/623 useless extension candidates. Maximal degree in co-relation 948. Up to 650 conditions per place. [2023-08-04 03:49:48,567 INFO L140 encePairwiseOnDemand]: 289/294 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2023-08-04 03:49:48,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 184 flow [2023-08-04 03:49:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:49:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:49:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 573 transitions. [2023-08-04 03:49:48,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4872448979591837 [2023-08-04 03:49:48,569 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 573 transitions. [2023-08-04 03:49:48,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 573 transitions. [2023-08-04 03:49:48,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:49:48,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 573 transitions. [2023-08-04 03:49:48,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states 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 03:49:48,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 03:49:48,573 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 294.0) internal successors, (1470), 5 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states 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 03:49:48,573 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 126 flow. Second operand 4 states and 573 transitions. [2023-08-04 03:49:48,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 184 flow [2023-08-04 03:49:48,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:49:48,575 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-04 03:49:48,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-04 03:49:48,575 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-04 03:49:48,575 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-04 03:49:48,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 03:49:48,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 03:49:48,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 03:49:48,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 03:49:48,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 03:49:48,576 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 03:49:48,577 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 03:49:48,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-04 03:49:48,597 INFO L124 PetriNetUnfolderBase]: 43/323 cut-off events. [2023-08-04 03:49:48,597 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 03:49:48,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 323 events. 43/323 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1108 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-04 03:49:48,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 159 transitions, 336 flow [2023-08-04 03:49:48,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 159 transitions, 336 flow [2023-08-04 03:49:48,600 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:49:48,600 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-04 03:49:48,601 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 159 transitions, 336 flow [2023-08-04 03:49:48,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-08-04 03:49:48,633 INFO L124 PetriNetUnfolderBase]: 43/323 cut-off events. [2023-08-04 03:49:48,633 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 03:49:48,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 323 events. 43/323 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1108 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-08-04 03:49:48,639 INFO L119 LiptonReduction]: Number of co-enabled transitions 7320 [2023-08-04 03:49:51,348 INFO L134 LiptonReduction]: Checked pairs total: 12142 [2023-08-04 03:49:51,348 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-04 03:49:51,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:49:51,350 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;@13cbec0d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:49:51,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:49:51,354 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:49:51,354 INFO L124 PetriNetUnfolderBase]: 22/72 cut-off events. [2023-08-04 03:49:51,354 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 03:49:51,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:49:51,355 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 03:49:51,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 03:49:51,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:49:51,355 INFO L85 PathProgramCache]: Analyzing trace with hash -837531282, now seen corresponding path program 1 times [2023-08-04 03:49:51,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:49:51,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624963639] [2023-08-04 03:49:51,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:51,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:49:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:49:51,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:49:51,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624963639] [2023-08-04 03:49:51,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624963639] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:49:51,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475722624] [2023-08-04 03:49:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:49:51,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:49:51,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:49:51,409 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 03:49:51,412 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 03:49:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:49:51,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 03:49:51,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:49:51,495 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 03:49:51,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:49:51,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475722624] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:49:51,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:49:51,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 03:49:51,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212868937] [2023-08-04 03:49:51,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:49:51,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:49:51,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:49:51,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:49:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:49:51,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 294 [2023-08-04 03:49:51,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 49 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:49:51,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:49:51,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 294 [2023-08-04 03:49:51,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:49:51,723 INFO L124 PetriNetUnfolderBase]: 1475/2455 cut-off events. [2023-08-04 03:49:51,723 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-04 03:49:51,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4867 conditions, 2455 events. 1475/2455 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 13381 event pairs, 0 based on Foata normal form. 171/2094 useless extension candidates. Maximal degree in co-relation 918. Up to 2220 conditions per place. [2023-08-04 03:49:51,727 INFO L140 encePairwiseOnDemand]: 279/294 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2023-08-04 03:49:51,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 61 transitions, 252 flow [2023-08-04 03:49:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 03:49:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 03:49:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 743 transitions. [2023-08-04 03:49:51,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054421768707483 [2023-08-04 03:49:51,729 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 743 transitions. [2023-08-04 03:49:51,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 743 transitions. [2023-08-04 03:49:51,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:49:51,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 743 transitions. [2023-08-04 03:49:51,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 0 states have call successors, (0), 0 states 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 03:49:51,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 294.0) internal successors, (1764), 6 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 03:49:51,733 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 294.0) internal successors, (1764), 6 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states 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 03:49:51,733 INFO L175 Difference]: Start difference. First operand has 39 places, 49 transitions, 116 flow. Second operand 5 states and 743 transitions. [2023-08-04 03:49:51,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 61 transitions, 252 flow [2023-08-04 03:49:51,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 03:49:51,736 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-04 03:49:51,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-04 03:49:51,736 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-08-04 03:49:51,736 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-04 03:49:51,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:49:51,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 03:49:51,747 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 03:49:51,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:49:51,942 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 03:49:51,943 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 03:49:51,943 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 03:49:51,943 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 03:49:51,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 03:49:51 BasicIcfg [2023-08-04 03:49:51,950 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 03:49:51,951 INFO L158 Benchmark]: Toolchain (without parser) took 16177.24ms. Allocated memory was 522.2MB in the beginning and 627.0MB in the end (delta: 104.9MB). Free memory was 471.8MB in the beginning and 566.3MB in the end (delta: -94.5MB). Peak memory consumption was 362.3MB. Max. memory is 16.0GB. [2023-08-04 03:49:51,951 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 360.7MB. Free memory is still 312.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 03:49:51,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 499.99ms. Allocated memory is still 522.2MB. Free memory was 471.5MB in the beginning and 451.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 03:49:51,952 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.80ms. Allocated memory is still 522.2MB. Free memory was 451.2MB in the beginning and 448.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:49:51,952 INFO L158 Benchmark]: Boogie Preprocessor took 24.76ms. Allocated memory is still 522.2MB. Free memory was 448.8MB in the beginning and 447.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:49:51,952 INFO L158 Benchmark]: RCFGBuilder took 345.06ms. Allocated memory is still 522.2MB. Free memory was 447.1MB in the beginning and 431.2MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-04 03:49:51,953 INFO L158 Benchmark]: TraceAbstraction took 15262.81ms. Allocated memory was 522.2MB in the beginning and 627.0MB in the end (delta: 104.9MB). Free memory was 430.3MB in the beginning and 566.3MB in the end (delta: -135.9MB). Peak memory consumption was 320.4MB. Max. memory is 16.0GB. [2023-08-04 03:49:51,955 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 360.7MB. Free memory is still 312.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 499.99ms. Allocated memory is still 522.2MB. Free memory was 471.5MB in the beginning and 451.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.80ms. Allocated memory is still 522.2MB. Free memory was 451.2MB in the beginning and 448.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.76ms. Allocated memory is still 522.2MB. Free memory was 448.8MB in the beginning and 447.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 345.06ms. Allocated memory is still 522.2MB. Free memory was 447.1MB in the beginning and 431.2MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 15262.81ms. Allocated memory was 522.2MB in the beginning and 627.0MB in the end (delta: 104.9MB). Free memory was 430.3MB in the beginning and 566.3MB in the end (delta: -135.9MB). Peak memory consumption was 320.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 121 PlacesBefore, 26 PlacesAfterwards, 132 TransitionsBefore, 34 TransitionsAfterwards, 3040 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 3 ChoiceCompositions, 121 TotalNumberOfCompositions, 4319 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2812, independent: 2693, independent conditional: 0, independent unconditional: 2693, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1629, independent: 1597, independent conditional: 0, independent unconditional: 1597, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2812, independent: 1096, independent conditional: 0, independent unconditional: 1096, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 1629, unknown conditional: 0, unknown unconditional: 1629] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, 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: 2.8s, 121 PlacesBefore, 25 PlacesAfterwards, 132 TransitionsBefore, 32 TransitionsAfterwards, 3040 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 4 ChoiceCompositions, 120 TotalNumberOfCompositions, 4419 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2577, independent: 2444, independent conditional: 0, independent unconditional: 2444, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1590, independent: 1558, independent conditional: 0, independent unconditional: 1558, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2577, independent: 886, independent conditional: 0, independent unconditional: 886, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 1590, unknown conditional: 0, unknown unconditional: 1590] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 41, Positive conditional cache size: 0, Positive unconditional cache size: 41, 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: 2.8s, 145 PlacesBefore, 39 PlacesAfterwards, 159 TransitionsBefore, 49 TransitionsAfterwards, 7320 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 30 ConcurrentYvCompositions, 4 ChoiceCompositions, 135 TotalNumberOfCompositions, 12194 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6964, independent: 6777, independent conditional: 0, independent unconditional: 6777, dependent: 187, dependent conditional: 0, dependent unconditional: 187, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3888, independent: 3835, independent conditional: 0, independent unconditional: 3835, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6964, independent: 2942, independent conditional: 0, independent unconditional: 2942, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 3888, unknown conditional: 0, unknown unconditional: 3888] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 148, Positive conditional cache size: 0, Positive unconditional cache size: 148, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 145 PlacesBefore, 39 PlacesAfterwards, 159 TransitionsBefore, 49 TransitionsAfterwards, 7320 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 30 ConcurrentYvCompositions, 4 ChoiceCompositions, 135 TotalNumberOfCompositions, 12142 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7153, independent: 6968, independent conditional: 0, independent unconditional: 6968, dependent: 185, dependent conditional: 0, dependent unconditional: 185, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3924, independent: 3874, independent conditional: 0, independent unconditional: 3874, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7153, independent: 3094, independent conditional: 0, independent unconditional: 3094, dependent: 135, dependent conditional: 0, dependent unconditional: 135, unknown: 3924, unknown conditional: 0, unknown unconditional: 3924] , Statistics on independence cache: Total cache size (in pairs): 203, Positive cache size: 181, Positive conditional cache size: 0, Positive unconditional cache size: 181, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 692]: 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, 141 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: 4.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64 IncrementalHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 1 mSDtfsCounter, 64 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 0.4s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 78 SizeOfPredicates, 0 NumberOfNonLiveVariables, 160 ConjunctsInSsa, 3 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, 159 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 241 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 401 IncrementalHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 9 mSDtfsCounter, 401 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=3, InterpolantAutomatonStates: 15, 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, 0.4s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 272 SizeOfPredicates, 0 NumberOfNonLiveVariables, 159 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 12/15 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, 141 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: 3.0s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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, 159 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: 3.4s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 03:49:51,991 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...