/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_41-trylock_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:18:18,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:18:18,148 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:18:18,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:18:18,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:18:18,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:18:18,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:18:18,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:18:18,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:18:18,182 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:18:18,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:18:18,183 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:18:18,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:18:18,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:18:18,185 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:18:18,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:18:18,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:18:18,186 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:18:18,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:18:18,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:18:18,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:18:18,191 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:18:18,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:18:18,192 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:18:18,196 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:18:18,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:18:18,196 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:18:18,198 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:18:18,198 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:18:18,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:18:18,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:18:18,199 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:18:18,199 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:18:18,200 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:18:18,200 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:18:18,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:18:18,200 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:18:18,200 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:18:18,200 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:18:18,200 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:18:18,201 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:18:18,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:18:18,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:18:18,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:18:18,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:18:18,408 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:18:18,408 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:18:18,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_41-trylock_racefree_bound2.i [2023-08-03 15:18:19,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:18:19,737 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:18:19,738 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_41-trylock_racefree_bound2.i [2023-08-03 15:18:19,751 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62b0bcb59/4b1fb65b4734477881d3df6487f64153/FLAGaa10ef1f0 [2023-08-03 15:18:19,763 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62b0bcb59/4b1fb65b4734477881d3df6487f64153 [2023-08-03 15:18:19,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:18:19,767 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:18:19,768 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:18:19,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:18:19,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:18:19,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:18:19" (1/1) ... [2023-08-03 15:18:19,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae625ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:19, skipping insertion in model container [2023-08-03 15:18:19,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:18:19" (1/1) ... [2023-08-03 15:18:19,802 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:18:20,031 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_41-trylock_racefree_bound2.i[30176,30189] [2023-08-03 15:18:20,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:18:20,067 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:18:20,098 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:18:20,099 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:18:20,124 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_41-trylock_racefree_bound2.i[30176,30189] [2023-08-03 15:18:20,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:18:20,172 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:18:20,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:20 WrapperNode [2023-08-03 15:18:20,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:18:20,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:18:20,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:18:20,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:18:20,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:20" (1/1) ... [2023-08-03 15:18:20,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:20" (1/1) ... [2023-08-03 15:18:20,235 INFO L138 Inliner]: procedures = 171, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-08-03 15:18:20,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:18:20,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:18:20,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:18:20,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:18:20,243 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:20" (1/1) ... [2023-08-03 15:18:20,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:20" (1/1) ... [2023-08-03 15:18:20,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:20" (1/1) ... [2023-08-03 15:18:20,250 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:20" (1/1) ... [2023-08-03 15:18:20,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:20" (1/1) ... [2023-08-03 15:18:20,257 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:20" (1/1) ... [2023-08-03 15:18:20,259 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:20" (1/1) ... [2023-08-03 15:18:20,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:20" (1/1) ... [2023-08-03 15:18:20,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:18:20,263 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:18:20,263 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:18:20,263 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:18:20,264 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:20" (1/1) ... [2023-08-03 15:18:20,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:18:20,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:18:20,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 15:18:20,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 15:18:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:18:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:18:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 15:18:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:18:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:18:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 15:18:20,344 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 15:18:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:18:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-03 15:18:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:18:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:18:20,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:18:20,347 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 15:18:20,485 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:18:20,491 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:18:20,709 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:18:20,722 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:18:20,723 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-03 15:18:20,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:18:20 BoogieIcfgContainer [2023-08-03 15:18:20,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:18:20,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:18:20,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:18:20,734 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:18:20,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:18:19" (1/3) ... [2023-08-03 15:18:20,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac150b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:18:20, skipping insertion in model container [2023-08-03 15:18:20,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:18:20" (2/3) ... [2023-08-03 15:18:20,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac150b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:18:20, skipping insertion in model container [2023-08-03 15:18:20,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:18:20" (3/3) ... [2023-08-03 15:18:20,736 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_41-trylock_racefree_bound2.i [2023-08-03 15:18:20,741 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:18:20,750 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:18:20,750 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:18:20,750 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:18:20,795 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 15:18:20,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 103 transitions, 214 flow [2023-08-03 15:18:20,888 INFO L124 PetriNetUnfolderBase]: 21/140 cut-off events. [2023-08-03 15:18:20,888 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:18:20,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 140 events. 21/140 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 339 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 70. Up to 6 conditions per place. [2023-08-03 15:18:20,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 103 transitions, 214 flow [2023-08-03 15:18:20,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 98 transitions, 201 flow [2023-08-03 15:18:20,900 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:18:20,908 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 98 transitions, 201 flow [2023-08-03 15:18:20,910 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 98 transitions, 201 flow [2023-08-03 15:18:20,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 98 transitions, 201 flow [2023-08-03 15:18:20,934 INFO L124 PetriNetUnfolderBase]: 20/135 cut-off events. [2023-08-03 15:18:20,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:18:20,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 20/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 325 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 70. Up to 6 conditions per place. [2023-08-03 15:18:20,937 INFO L119 LiptonReduction]: Number of co-enabled transitions 2408 [2023-08-03 15:18:23,147 INFO L134 LiptonReduction]: Checked pairs total: 3879 [2023-08-03 15:18:23,147 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-03 15:18:23,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:18:23,165 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;@2ae4977e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:18:23,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 15:18:23,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:18:23,170 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-08-03 15:18:23,170 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:18:23,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:23,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:18:23,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:18:23,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:23,175 INFO L85 PathProgramCache]: Analyzing trace with hash 383557292, now seen corresponding path program 1 times [2023-08-03 15:18:23,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:23,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765059751] [2023-08-03 15:18:23,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:23,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:23,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:23,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765059751] [2023-08-03 15:18:23,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765059751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:23,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:23,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:18:23,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836650782] [2023-08-03 15:18:23,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:23,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:18:23,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:23,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:18:23,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:18:23,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 181 [2023-08-03 15:18:23,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 32 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:23,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:23,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 181 [2023-08-03 15:18:23,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:23,528 INFO L124 PetriNetUnfolderBase]: 89/209 cut-off events. [2023-08-03 15:18:23,529 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:18:23,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 209 events. 89/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 842 event pairs, 0 based on Foata normal form. 20/193 useless extension candidates. Maximal degree in co-relation 384. Up to 180 conditions per place. [2023-08-03 15:18:23,534 INFO L140 encePairwiseOnDemand]: 170/181 looper letters, 23 selfloop transitions, 2 changer transitions 5/33 dead transitions. [2023-08-03 15:18:23,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 131 flow [2023-08-03 15:18:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:18:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:18:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-03 15:18:23,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469613259668509 [2023-08-03 15:18:23,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-03 15:18:23,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-03 15:18:23,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:23,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-03 15:18:23,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:23,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:23,576 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:23,578 INFO L175 Difference]: Start difference. First operand has 26 places, 32 transitions, 69 flow. Second operand 3 states and 297 transitions. [2023-08-03 15:18:23,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 131 flow [2023-08-03 15:18:23,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 131 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:18:23,581 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 51 flow [2023-08-03 15:18:23,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2023-08-03 15:18:23,586 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-03 15:18:23,586 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 51 flow [2023-08-03 15:18:23,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:23,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:23,586 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:18:23,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:18:23,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:18:23,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:23,587 INFO L85 PathProgramCache]: Analyzing trace with hash -981753351, now seen corresponding path program 1 times [2023-08-03 15:18:23,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:23,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49225982] [2023-08-03 15:18:23,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:23,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:18:23,615 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:18:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:18:23,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:18:23,646 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:18:23,648 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 15:18:23,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 15:18:23,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:18:23,650 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:18:23,652 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:18:23,652 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:18:23,668 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 15:18:23,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 133 transitions, 284 flow [2023-08-03 15:18:23,703 INFO L124 PetriNetUnfolderBase]: 37/231 cut-off events. [2023-08-03 15:18:23,704 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:18:23,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 231 events. 37/231 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 663 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2023-08-03 15:18:23,705 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 133 transitions, 284 flow [2023-08-03 15:18:23,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 133 transitions, 284 flow [2023-08-03 15:18:23,707 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:18:23,707 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 133 transitions, 284 flow [2023-08-03 15:18:23,707 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 133 transitions, 284 flow [2023-08-03 15:18:23,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 133 transitions, 284 flow [2023-08-03 15:18:23,728 INFO L124 PetriNetUnfolderBase]: 37/231 cut-off events. [2023-08-03 15:18:23,729 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:18:23,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 231 events. 37/231 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 663 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2023-08-03 15:18:23,735 INFO L119 LiptonReduction]: Number of co-enabled transitions 7000 [2023-08-03 15:18:25,813 INFO L134 LiptonReduction]: Checked pairs total: 14688 [2023-08-03 15:18:25,813 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-08-03 15:18:25,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:18:25,816 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;@2ae4977e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:18:25,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 15:18:25,818 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:18:25,818 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-08-03 15:18:25,819 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:18:25,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:25,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:18:25,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:18:25,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:25,819 INFO L85 PathProgramCache]: Analyzing trace with hash 626726661, now seen corresponding path program 1 times [2023-08-03 15:18:25,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:25,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669700939] [2023-08-03 15:18:25,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:25,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:25,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:25,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669700939] [2023-08-03 15:18:25,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669700939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:25,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:25,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:18:25,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250518766] [2023-08-03 15:18:25,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:25,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:18:25,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:25,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:18:25,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:18:25,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 225 [2023-08-03 15:18:25,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 57 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:25,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:25,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 225 [2023-08-03 15:18:25,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:26,132 INFO L124 PetriNetUnfolderBase]: 1665/2829 cut-off events. [2023-08-03 15:18:26,133 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-03 15:18:26,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5563 conditions, 2829 events. 1665/2829 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 15941 event pairs, 1331 based on Foata normal form. 442/2906 useless extension candidates. Maximal degree in co-relation 2459. Up to 2666 conditions per place. [2023-08-03 15:18:26,145 INFO L140 encePairwiseOnDemand]: 208/225 looper letters, 32 selfloop transitions, 2 changer transitions 9/52 dead transitions. [2023-08-03 15:18:26,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 206 flow [2023-08-03 15:18:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:18:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:18:26,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2023-08-03 15:18:26,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5644444444444444 [2023-08-03 15:18:26,148 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2023-08-03 15:18:26,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2023-08-03 15:18:26,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:26,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2023-08-03 15:18:26,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:26,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:26,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:26,152 INFO L175 Difference]: Start difference. First operand has 45 places, 57 transitions, 132 flow. Second operand 3 states and 381 transitions. [2023-08-03 15:18:26,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 206 flow [2023-08-03 15:18:26,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 206 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:18:26,154 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 92 flow [2023-08-03 15:18:26,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2023-08-03 15:18:26,155 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2023-08-03 15:18:26,155 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 92 flow [2023-08-03 15:18:26,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:26,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:26,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:26,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:18:26,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:18:26,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:26,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1422392588, now seen corresponding path program 1 times [2023-08-03 15:18:26,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:26,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963130708] [2023-08-03 15:18:26,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:26,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:26,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:26,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963130708] [2023-08-03 15:18:26,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963130708] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:18:26,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470115871] [2023-08-03 15:18:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:26,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:18:26,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:18:26,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:18:26,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 15:18:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:26,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:18:26,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:18:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:26,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:18:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:26,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470115871] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:18:26,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:18:26,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 15:18:26,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673456140] [2023-08-03 15:18:26,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:18:26,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:18:26,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:26,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:18:26,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:18:26,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 225 [2023-08-03 15:18:26,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:26,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:26,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 225 [2023-08-03 15:18:26,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:26,578 INFO L124 PetriNetUnfolderBase]: 911/1487 cut-off events. [2023-08-03 15:18:26,579 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2023-08-03 15:18:26,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 1487 events. 911/1487 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 7571 event pairs, 159 based on Foata normal form. 8/1419 useless extension candidates. Maximal degree in co-relation 2261. Up to 1068 conditions per place. [2023-08-03 15:18:26,587 INFO L140 encePairwiseOnDemand]: 221/225 looper letters, 46 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2023-08-03 15:18:26,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 59 transitions, 240 flow [2023-08-03 15:18:26,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:18:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:18:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 471 transitions. [2023-08-03 15:18:26,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233333333333333 [2023-08-03 15:18:26,589 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 471 transitions. [2023-08-03 15:18:26,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 471 transitions. [2023-08-03 15:18:26,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:26,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 471 transitions. [2023-08-03 15:18:26,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:26,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:26,594 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:26,594 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 92 flow. Second operand 4 states and 471 transitions. [2023-08-03 15:18:26,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 59 transitions, 240 flow [2023-08-03 15:18:26,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 59 transitions, 236 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 15:18:26,597 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 108 flow [2023-08-03 15:18:26,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-08-03 15:18:26,599 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2023-08-03 15:18:26,600 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 108 flow [2023-08-03 15:18:26,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:26,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:26,600 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:18:26,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 15:18:26,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:18:26,805 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:18:26,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1871727149, now seen corresponding path program 1 times [2023-08-03 15:18:26,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:26,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810069337] [2023-08-03 15:18:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:26,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:26,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:26,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810069337] [2023-08-03 15:18:26,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810069337] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:18:26,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212840832] [2023-08-03 15:18:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:26,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:18:26,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:18:26,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:18:26,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 15:18:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:26,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:18:26,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:18:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:18:26,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:18:26,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212840832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:26,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:18:26,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:18:26,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519732512] [2023-08-03 15:18:26,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:26,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:18:26,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:26,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:18:26,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:18:27,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 225 [2023-08-03 15:18:27,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 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) [2023-08-03 15:18:27,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:27,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 225 [2023-08-03 15:18:27,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:27,170 INFO L124 PetriNetUnfolderBase]: 784/1279 cut-off events. [2023-08-03 15:18:27,170 INFO L125 PetriNetUnfolderBase]: For 488/488 co-relation queries the response was YES. [2023-08-03 15:18:27,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 1279 events. 784/1279 cut-off events. For 488/488 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6320 event pairs, 0 based on Foata normal form. 72/1278 useless extension candidates. Maximal degree in co-relation 363. Up to 1067 conditions per place. [2023-08-03 15:18:27,179 INFO L140 encePairwiseOnDemand]: 222/225 looper letters, 46 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-03 15:18:27,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 244 flow [2023-08-03 15:18:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:18:27,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:18:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 575 transitions. [2023-08-03 15:18:27,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2023-08-03 15:18:27,181 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 575 transitions. [2023-08-03 15:18:27,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 575 transitions. [2023-08-03 15:18:27,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:27,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 575 transitions. [2023-08-03 15:18:27,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:27,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:27,187 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:27,187 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 108 flow. Second operand 5 states and 575 transitions. [2023-08-03 15:18:27,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 244 flow [2023-08-03 15:18:27,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 237 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 15:18:27,190 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 97 flow [2023-08-03 15:18:27,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2023-08-03 15:18:27,190 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2023-08-03 15:18:27,191 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 97 flow [2023-08-03 15:18:27,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 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) [2023-08-03 15:18:27,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:27,191 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:27,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 15:18:27,396 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 [2023-08-03 15:18:27,397 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:18:27,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:27,397 INFO L85 PathProgramCache]: Analyzing trace with hash -862272812, now seen corresponding path program 1 times [2023-08-03 15:18:27,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:27,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309489108] [2023-08-03 15:18:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:27,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 15:18:27,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:27,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309489108] [2023-08-03 15:18:27,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309489108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:27,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:27,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:18:27,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612867492] [2023-08-03 15:18:27,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:27,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:18:27,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:18:27,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:18:27,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 225 [2023-08-03 15:18:27,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:27,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:27,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 225 [2023-08-03 15:18:27,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:27,656 INFO L124 PetriNetUnfolderBase]: 871/1462 cut-off events. [2023-08-03 15:18:27,657 INFO L125 PetriNetUnfolderBase]: For 790/790 co-relation queries the response was YES. [2023-08-03 15:18:27,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3238 conditions, 1462 events. 871/1462 cut-off events. For 790/790 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6922 event pairs, 304 based on Foata normal form. 9/1385 useless extension candidates. Maximal degree in co-relation 2366. Up to 1255 conditions per place. [2023-08-03 15:18:27,666 INFO L140 encePairwiseOnDemand]: 221/225 looper letters, 38 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-03 15:18:27,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 228 flow [2023-08-03 15:18:27,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:18:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:18:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-08-03 15:18:27,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5259259259259259 [2023-08-03 15:18:27,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-08-03 15:18:27,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-08-03 15:18:27,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:27,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-08-03 15:18:27,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:27,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:27,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:27,671 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 97 flow. Second operand 3 states and 355 transitions. [2023-08-03 15:18:27,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 228 flow [2023-08-03 15:18:27,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 15:18:27,674 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 111 flow [2023-08-03 15:18:27,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-08-03 15:18:27,677 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2023-08-03 15:18:27,677 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 111 flow [2023-08-03 15:18:27,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:27,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:27,678 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:27,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:18:27,678 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:18:27,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:27,679 INFO L85 PathProgramCache]: Analyzing trace with hash -2063244236, now seen corresponding path program 1 times [2023-08-03 15:18:27,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:27,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081506520] [2023-08-03 15:18:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:27,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:18:27,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:27,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081506520] [2023-08-03 15:18:27,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081506520] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:27,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:27,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:18:27,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131357984] [2023-08-03 15:18:27,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:27,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:18:27,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:27,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:18:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:18:27,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 225 [2023-08-03 15:18:27,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:27,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:27,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 225 [2023-08-03 15:18:27,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:27,978 INFO L124 PetriNetUnfolderBase]: 112/296 cut-off events. [2023-08-03 15:18:27,978 INFO L125 PetriNetUnfolderBase]: For 218/218 co-relation queries the response was YES. [2023-08-03 15:18:27,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 296 events. 112/296 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1101 event pairs, 9 based on Foata normal form. 49/341 useless extension candidates. Maximal degree in co-relation 402. Up to 203 conditions per place. [2023-08-03 15:18:27,980 INFO L140 encePairwiseOnDemand]: 219/225 looper letters, 27 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2023-08-03 15:18:27,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 207 flow [2023-08-03 15:18:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:18:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:18:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 445 transitions. [2023-08-03 15:18:27,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49444444444444446 [2023-08-03 15:18:27,982 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 445 transitions. [2023-08-03 15:18:27,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 445 transitions. [2023-08-03 15:18:27,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:27,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 445 transitions. [2023-08-03 15:18:27,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:27,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:27,986 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:27,986 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 111 flow. Second operand 4 states and 445 transitions. [2023-08-03 15:18:27,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 207 flow [2023-08-03 15:18:27,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:18:27,989 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 120 flow [2023-08-03 15:18:27,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-08-03 15:18:27,990 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-08-03 15:18:27,991 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 120 flow [2023-08-03 15:18:27,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:27,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:27,991 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:27,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:18:27,991 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:18:27,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:27,992 INFO L85 PathProgramCache]: Analyzing trace with hash -898202075, now seen corresponding path program 1 times [2023-08-03 15:18:27,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:27,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279016982] [2023-08-03 15:18:27,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:27,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 15:18:28,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:28,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279016982] [2023-08-03 15:18:28,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279016982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:28,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:28,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:18:28,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069236631] [2023-08-03 15:18:28,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:28,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:18:28,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:18:28,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:18:28,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 225 [2023-08-03 15:18:28,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 120 flow. Second operand has 6 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:28,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:28,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 225 [2023-08-03 15:18:28,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:28,327 INFO L124 PetriNetUnfolderBase]: 130/309 cut-off events. [2023-08-03 15:18:28,327 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2023-08-03 15:18:28,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 309 events. 130/309 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1109 event pairs, 33 based on Foata normal form. 1/308 useless extension candidates. Maximal degree in co-relation 443. Up to 130 conditions per place. [2023-08-03 15:18:28,329 INFO L140 encePairwiseOnDemand]: 217/225 looper letters, 57 selfloop transitions, 8 changer transitions 2/73 dead transitions. [2023-08-03 15:18:28,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 73 transitions, 414 flow [2023-08-03 15:18:28,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 15:18:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 15:18:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2023-08-03 15:18:28,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882539682539683 [2023-08-03 15:18:28,332 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2023-08-03 15:18:28,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2023-08-03 15:18:28,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:28,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2023-08-03 15:18:28,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:28,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 225.0) internal successors, (1800), 8 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:28,337 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 225.0) internal successors, (1800), 8 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:28,338 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 120 flow. Second operand 7 states and 769 transitions. [2023-08-03 15:18:28,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 73 transitions, 414 flow [2023-08-03 15:18:28,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 73 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:18:28,341 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 159 flow [2023-08-03 15:18:28,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-08-03 15:18:28,342 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2023-08-03 15:18:28,343 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 159 flow [2023-08-03 15:18:28,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:28,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:28,343 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:28,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 15:18:28,343 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:18:28,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:28,345 INFO L85 PathProgramCache]: Analyzing trace with hash 838233304, now seen corresponding path program 1 times [2023-08-03 15:18:28,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:28,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446156564] [2023-08-03 15:18:28,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:28,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 15:18:28,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:28,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446156564] [2023-08-03 15:18:28,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446156564] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:18:28,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626940344] [2023-08-03 15:18:28,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:28,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:18:28,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:18:28,506 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) [2023-08-03 15:18:28,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 15:18:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:28,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 15:18:28,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:18:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 15:18:28,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:18:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 15:18:28,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626940344] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:18:28,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:18:28,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-03 15:18:28,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948925009] [2023-08-03 15:18:28,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:18:28,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:18:28,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:28,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:18:28,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:18:28,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 225 [2023-08-03 15:18:28,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:28,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:28,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 225 [2023-08-03 15:18:28,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:28,821 INFO L124 PetriNetUnfolderBase]: 127/303 cut-off events. [2023-08-03 15:18:28,821 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-08-03 15:18:28,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 883 conditions, 303 events. 127/303 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1064 event pairs, 24 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 488. Up to 165 conditions per place. [2023-08-03 15:18:28,823 INFO L140 encePairwiseOnDemand]: 218/225 looper letters, 49 selfloop transitions, 7 changer transitions 2/65 dead transitions. [2023-08-03 15:18:28,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 370 flow [2023-08-03 15:18:28,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:18:28,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:18:28,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 659 transitions. [2023-08-03 15:18:28,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48814814814814816 [2023-08-03 15:18:28,825 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 659 transitions. [2023-08-03 15:18:28,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 659 transitions. [2023-08-03 15:18:28,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:28,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 659 transitions. [2023-08-03 15:18:28,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:28,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 225.0) internal successors, (1575), 7 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:28,830 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 225.0) internal successors, (1575), 7 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:28,830 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 159 flow. Second operand 6 states and 659 transitions. [2023-08-03 15:18:28,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 370 flow [2023-08-03 15:18:28,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 65 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:18:28,832 INFO L231 Difference]: Finished difference. Result has 62 places, 43 transitions, 193 flow [2023-08-03 15:18:28,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=43} [2023-08-03 15:18:28,833 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 17 predicate places. [2023-08-03 15:18:28,833 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 43 transitions, 193 flow [2023-08-03 15:18:28,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:28,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:28,833 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:28,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 15:18:29,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:18:29,038 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:18:29,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:29,039 INFO L85 PathProgramCache]: Analyzing trace with hash -348549449, now seen corresponding path program 1 times [2023-08-03 15:18:29,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:29,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593818529] [2023-08-03 15:18:29,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:29,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:18:29,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:29,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593818529] [2023-08-03 15:18:29,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593818529] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:18:29,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275640018] [2023-08-03 15:18:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:29,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:18:29,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:18:29,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 15:18:29,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 15:18:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:29,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-03 15:18:29,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:18:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:18:29,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:18:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:18:29,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275640018] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:18:29,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:18:29,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2023-08-03 15:18:29,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685456755] [2023-08-03 15:18:29,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:18:29,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 15:18:29,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:29,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 15:18:29,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-03 15:18:29,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 225 [2023-08-03 15:18:29,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 43 transitions, 193 flow. Second operand has 8 states, 8 states have (on average 100.5) internal successors, (804), 8 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:29,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:29,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 225 [2023-08-03 15:18:29,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:29,760 INFO L124 PetriNetUnfolderBase]: 136/314 cut-off events. [2023-08-03 15:18:29,760 INFO L125 PetriNetUnfolderBase]: For 335/335 co-relation queries the response was YES. [2023-08-03 15:18:29,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 314 events. 136/314 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1120 event pairs, 53 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 656. Up to 164 conditions per place. [2023-08-03 15:18:29,761 INFO L140 encePairwiseOnDemand]: 214/225 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2023-08-03 15:18:29,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 467 flow [2023-08-03 15:18:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 15:18:29,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 15:18:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 927 transitions. [2023-08-03 15:18:29,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577777777777778 [2023-08-03 15:18:29,765 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 927 transitions. [2023-08-03 15:18:29,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 927 transitions. [2023-08-03 15:18:29,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:29,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 927 transitions. [2023-08-03 15:18:29,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 103.0) internal successors, (927), 9 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:29,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 225.0) internal successors, (2250), 10 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:29,770 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 225.0) internal successors, (2250), 10 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:29,770 INFO L175 Difference]: Start difference. First operand has 62 places, 43 transitions, 193 flow. Second operand 9 states and 927 transitions. [2023-08-03 15:18:29,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 467 flow [2023-08-03 15:18:29,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 461 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:18:29,772 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2023-08-03 15:18:29,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2023-08-03 15:18:29,773 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2023-08-03 15:18:29,773 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2023-08-03 15:18:29,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 100.5) internal successors, (804), 8 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:18:29,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 15:18:29,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 15:18:29,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 15:18:29,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:18:29,979 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:18:29,980 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:18:29,980 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:18:29,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:18:29 BasicIcfg [2023-08-03 15:18:29,983 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:18:29,984 INFO L158 Benchmark]: Toolchain (without parser) took 10216.82ms. Allocated memory was 536.9MB in the beginning and 645.9MB in the end (delta: 109.1MB). Free memory was 488.5MB in the beginning and 252.0MB in the end (delta: 236.5MB). Peak memory consumption was 347.0MB. Max. memory is 16.0GB. [2023-08-03 15:18:29,984 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 327.2MB. Free memory was 280.7MB in the beginning and 280.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:18:29,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.79ms. Allocated memory is still 536.9MB. Free memory was 488.1MB in the beginning and 468.3MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 15:18:29,984 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.85ms. Allocated memory is still 536.9MB. Free memory was 468.3MB in the beginning and 466.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:18:29,984 INFO L158 Benchmark]: Boogie Preprocessor took 26.52ms. Allocated memory is still 536.9MB. Free memory was 466.2MB in the beginning and 464.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:18:29,985 INFO L158 Benchmark]: RCFGBuilder took 462.10ms. Allocated memory is still 536.9MB. Free memory was 464.4MB in the beginning and 450.1MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 15:18:29,985 INFO L158 Benchmark]: TraceAbstraction took 9256.05ms. Allocated memory was 536.9MB in the beginning and 645.9MB in the end (delta: 109.1MB). Free memory was 449.4MB in the beginning and 252.0MB in the end (delta: 197.4MB). Peak memory consumption was 307.1MB. Max. memory is 16.0GB. [2023-08-03 15:18:29,986 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 327.2MB. Free memory was 280.7MB in the beginning and 280.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 406.79ms. Allocated memory is still 536.9MB. Free memory was 488.1MB in the beginning and 468.3MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.85ms. Allocated memory is still 536.9MB. Free memory was 468.3MB in the beginning and 466.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.52ms. Allocated memory is still 536.9MB. Free memory was 466.2MB in the beginning and 464.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 462.10ms. Allocated memory is still 536.9MB. Free memory was 464.4MB in the beginning and 450.1MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 9256.05ms. Allocated memory was 536.9MB in the beginning and 645.9MB in the end (delta: 109.1MB). Free memory was 449.4MB in the beginning and 252.0MB in the end (delta: 197.4MB). Peak memory consumption was 307.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 88 PlacesBefore, 26 PlacesAfterwards, 98 TransitionsBefore, 32 TransitionsAfterwards, 2408 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 78 TotalNumberOfCompositions, 3879 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2392, independent: 2263, independent conditional: 0, independent unconditional: 2263, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1244, independent: 1216, independent conditional: 0, independent unconditional: 1216, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2392, independent: 1047, independent conditional: 0, independent unconditional: 1047, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 1244, unknown conditional: 0, unknown unconditional: 1244] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 117 PlacesBefore, 45 PlacesAfterwards, 133 TransitionsBefore, 57 TransitionsAfterwards, 7000 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 92 TotalNumberOfCompositions, 14688 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6464, independent: 6243, independent conditional: 0, independent unconditional: 6243, dependent: 221, dependent conditional: 0, dependent unconditional: 221, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3268, independent: 3215, independent conditional: 0, independent unconditional: 3215, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6464, independent: 3028, independent conditional: 0, independent unconditional: 3028, dependent: 168, dependent conditional: 0, dependent unconditional: 168, unknown: 3268, unknown conditional: 0, unknown unconditional: 3268] , Statistics on independence cache: Total cache size (in pairs): 216, Positive cache size: 192, Positive conditional cache size: 0, Positive unconditional cache size: 192, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 691]: 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, 113 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 136 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.3s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 453 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 337 mSDsluCounter, 145 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 143 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1278 IncrementalHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 2 mSDtfsCounter, 1278 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 130 SyntacticMatches, 18 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=7, InterpolantAutomatonStates: 41, 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, 1.3s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 271 ConstructedInterpolants, 0 QuantifiedInterpolants, 1018 SizeOfPredicates, 7 NumberOfNonLiveVariables, 628 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 44/73 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 15:18:30,007 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...