/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_37-indirect_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:25:03,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:25:03,239 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:25:03,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:25:03,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:25:03,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:25:03,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:25:03,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:25:03,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:25:03,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:25:03,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:25:03,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:25:03,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:25:03,274 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:25:03,274 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:25:03,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:25:03,274 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:25:03,274 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:25:03,275 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:25:03,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:25:03,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:25:03,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:25:03,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:25:03,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:25:03,276 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:25:03,276 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:25:03,276 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:25:03,276 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:25:03,277 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:25:03,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:25:03,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:25:03,278 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:25:03,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:25:03,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:25:03,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:25:03,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:25:03,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:25:03,279 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:25:03,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:25:03,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:25:03,279 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:25:03,279 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:25:03,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:25:03,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:25:03,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:25:03,467 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:25:03,468 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:25:03,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_37-indirect_racing_bound2.i [2023-08-03 21:25:04,373 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:25:04,543 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:25:04,543 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_37-indirect_racing_bound2.i [2023-08-03 21:25:04,551 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c65872e/c674bc9c0f814ee19e37e39eacf40c9c/FLAG27f1d9baf [2023-08-03 21:25:04,560 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c65872e/c674bc9c0f814ee19e37e39eacf40c9c [2023-08-03 21:25:04,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:25:04,562 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:25:04,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:25:04,563 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:25:04,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:25:04,566 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:25:04" (1/1) ... [2023-08-03 21:25:04,567 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b982f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04, skipping insertion in model container [2023-08-03 21:25:04,567 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:25:04" (1/1) ... [2023-08-03 21:25:04,607 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:25:04,851 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_37-indirect_racing_bound2.i[30176,30189] [2023-08-03 21:25:04,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:25:04,874 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:25:04,898 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:25:04,899 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:25:04,906 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_37-indirect_racing_bound2.i[30176,30189] [2023-08-03 21:25:04,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:25:04,940 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:25:04,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04 WrapperNode [2023-08-03 21:25:04,941 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:25:04,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:25:04,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:25:04,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:25:04,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04" (1/1) ... [2023-08-03 21:25:04,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04" (1/1) ... [2023-08-03 21:25:04,983 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-08-03 21:25:04,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:25:04,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:25:04,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:25:04,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:25:04,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04" (1/1) ... [2023-08-03 21:25:04,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04" (1/1) ... [2023-08-03 21:25:04,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04" (1/1) ... [2023-08-03 21:25:04,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04" (1/1) ... [2023-08-03 21:25:05,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04" (1/1) ... [2023-08-03 21:25:05,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04" (1/1) ... [2023-08-03 21:25:05,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04" (1/1) ... [2023-08-03 21:25:05,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04" (1/1) ... [2023-08-03 21:25:05,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:25:05,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:25:05,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:25:05,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:25:05,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04" (1/1) ... [2023-08-03 21:25:05,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:25:05,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:25:05,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 21:25:05,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 21:25:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:25:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:25:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 21:25:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:25:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:25:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 21:25:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 21:25:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:25:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:25:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:25:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:25:05,366 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 21:25:05,451 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:25:05,452 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:25:05,598 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:25:05,603 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:25:05,603 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-03 21:25:05,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:25:05 BoogieIcfgContainer [2023-08-03 21:25:05,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:25:05,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:25:05,606 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:25:05,608 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:25:05,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:25:04" (1/3) ... [2023-08-03 21:25:05,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a5ed35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:25:05, skipping insertion in model container [2023-08-03 21:25:05,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:25:04" (2/3) ... [2023-08-03 21:25:05,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a5ed35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:25:05, skipping insertion in model container [2023-08-03 21:25:05,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:25:05" (3/3) ... [2023-08-03 21:25:05,609 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_37-indirect_racing_bound2.i [2023-08-03 21:25:05,617 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:25:05,623 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:25:05,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:25:05,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:25:05,689 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 21:25:05,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 108 transitions, 224 flow [2023-08-03 21:25:05,776 INFO L124 PetriNetUnfolderBase]: 17/140 cut-off events. [2023-08-03 21:25:05,776 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 21:25:05,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 140 events. 17/140 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 338 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2023-08-03 21:25:05,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 108 transitions, 224 flow [2023-08-03 21:25:05,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 103 transitions, 211 flow [2023-08-03 21:25:05,786 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:25:05,795 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 103 transitions, 211 flow [2023-08-03 21:25:05,798 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 103 transitions, 211 flow [2023-08-03 21:25:05,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 103 transitions, 211 flow [2023-08-03 21:25:05,844 INFO L124 PetriNetUnfolderBase]: 16/135 cut-off events. [2023-08-03 21:25:05,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:25:05,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 16/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 317 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2023-08-03 21:25:05,847 INFO L119 LiptonReduction]: Number of co-enabled transitions 2432 [2023-08-03 21:25:08,265 INFO L134 LiptonReduction]: Checked pairs total: 4247 [2023-08-03 21:25:08,266 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-03 21:25:08,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:25:08,278 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;@49179e59, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:25:08,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:25:08,282 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:25:08,282 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2023-08-03 21:25:08,282 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:25:08,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:08,282 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 21:25:08,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:25:08,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:08,285 INFO L85 PathProgramCache]: Analyzing trace with hash -598310129, now seen corresponding path program 1 times [2023-08-03 21:25:08,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:08,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433628303] [2023-08-03 21:25:08,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:08,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:25:08,378 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:25:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:25:08,423 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:25:08,424 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:25:08,425 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:25:08,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:25:08,427 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:25:08,434 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 21:25:08,435 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:25:08,435 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:25:08,465 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 21:25:08,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 142 transitions, 302 flow [2023-08-03 21:25:08,499 INFO L124 PetriNetUnfolderBase]: 31/230 cut-off events. [2023-08-03 21:25:08,499 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:25:08,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 230 events. 31/230 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 677 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2023-08-03 21:25:08,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 142 transitions, 302 flow [2023-08-03 21:25:08,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 142 transitions, 302 flow [2023-08-03 21:25:08,503 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:25:08,503 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 142 transitions, 302 flow [2023-08-03 21:25:08,503 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 142 transitions, 302 flow [2023-08-03 21:25:08,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 142 transitions, 302 flow [2023-08-03 21:25:08,532 INFO L124 PetriNetUnfolderBase]: 31/230 cut-off events. [2023-08-03 21:25:08,532 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:25:08,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 230 events. 31/230 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 677 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2023-08-03 21:25:08,539 INFO L119 LiptonReduction]: Number of co-enabled transitions 7616 [2023-08-03 21:25:10,866 INFO L134 LiptonReduction]: Checked pairs total: 15436 [2023-08-03 21:25:10,866 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-08-03 21:25:10,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:25:10,869 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;@49179e59, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:25:10,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:25:10,872 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:25:10,872 INFO L124 PetriNetUnfolderBase]: 10/54 cut-off events. [2023-08-03 21:25:10,872 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 21:25:10,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:10,872 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 21:25:10,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:25:10,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:10,873 INFO L85 PathProgramCache]: Analyzing trace with hash 560708747, now seen corresponding path program 1 times [2023-08-03 21:25:10,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:10,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004328647] [2023-08-03 21:25:10,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:10,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:11,026 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 21:25:11,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:11,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004328647] [2023-08-03 21:25:11,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004328647] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:25:11,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812425375] [2023-08-03 21:25:11,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:11,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:25:11,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:25:11,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:25:11,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 21:25:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:11,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:25:11,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:25:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:25:11,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:25:11,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812425375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:25:11,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:25:11,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 21:25:11,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222993229] [2023-08-03 21:25:11,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:25:11,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:25:11,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:11,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:25:11,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:25:11,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 247 [2023-08-03 21:25:11,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 54 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:11,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:11,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 247 [2023-08-03 21:25:11,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:11,426 INFO L124 PetriNetUnfolderBase]: 1347/2280 cut-off events. [2023-08-03 21:25:11,426 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-03 21:25:11,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4554 conditions, 2280 events. 1347/2280 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 13379 event pairs, 0 based on Foata normal form. 354/2433 useless extension candidates. Maximal degree in co-relation 463. Up to 2023 conditions per place. [2023-08-03 21:25:11,431 INFO L140 encePairwiseOnDemand]: 229/247 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2023-08-03 21:25:11,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 67 transitions, 266 flow [2023-08-03 21:25:11,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:25:11,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:25:11,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 667 transitions. [2023-08-03 21:25:11,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540080971659919 [2023-08-03 21:25:11,441 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 667 transitions. [2023-08-03 21:25:11,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 667 transitions. [2023-08-03 21:25:11,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:11,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 667 transitions. [2023-08-03 21:25:11,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:11,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:11,451 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 247.0) internal successors, (1482), 6 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:11,452 INFO L175 Difference]: Start difference. First operand has 43 places, 54 transitions, 126 flow. Second operand 5 states and 667 transitions. [2023-08-03 21:25:11,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 67 transitions, 266 flow [2023-08-03 21:25:11,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 67 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:25:11,455 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-03 21:25:11,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-03 21:25:11,459 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-08-03 21:25:11,459 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-03 21:25:11,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:11,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:25:11,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 21:25:11,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:25:11,664 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:25:11,664 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 21:25:11,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 142 transitions, 302 flow [2023-08-03 21:25:11,678 INFO L124 PetriNetUnfolderBase]: 31/230 cut-off events. [2023-08-03 21:25:11,678 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:25:11,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 230 events. 31/230 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 677 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2023-08-03 21:25:11,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 142 transitions, 302 flow [2023-08-03 21:25:11,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 142 transitions, 302 flow [2023-08-03 21:25:11,680 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:25:11,680 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 142 transitions, 302 flow [2023-08-03 21:25:11,680 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 142 transitions, 302 flow [2023-08-03 21:25:11,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 142 transitions, 302 flow [2023-08-03 21:25:11,691 INFO L124 PetriNetUnfolderBase]: 31/230 cut-off events. [2023-08-03 21:25:11,691 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:25:11,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 230 events. 31/230 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 677 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 142. Up to 9 conditions per place. [2023-08-03 21:25:11,695 INFO L119 LiptonReduction]: Number of co-enabled transitions 7616 [2023-08-03 21:25:13,834 INFO L134 LiptonReduction]: Checked pairs total: 15610 [2023-08-03 21:25:13,834 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-08-03 21:25:13,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:25:13,836 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;@49179e59, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:25:13,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:25:13,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:25:13,837 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 21:25:13,838 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:25:13,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:13,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 21:25:13,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:25:13,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:13,838 INFO L85 PathProgramCache]: Analyzing trace with hash 24640866, now seen corresponding path program 1 times [2023-08-03 21:25:13,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:13,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332048004] [2023-08-03 21:25:13,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:13,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:25:13,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:13,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332048004] [2023-08-03 21:25:13,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332048004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:25:13,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:25:13,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:25:13,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348321488] [2023-08-03 21:25:13,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:25:13,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:25:13,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:13,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:25:13,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:25:13,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 247 [2023-08-03 21:25:13,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 54 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:13,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:13,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 247 [2023-08-03 21:25:13,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:14,044 INFO L124 PetriNetUnfolderBase]: 1490/2698 cut-off events. [2023-08-03 21:25:14,045 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-03 21:25:14,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5210 conditions, 2698 events. 1490/2698 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 15956 event pairs, 680 based on Foata normal form. 390/2790 useless extension candidates. Maximal degree in co-relation 536. Up to 2431 conditions per place. [2023-08-03 21:25:14,052 INFO L140 encePairwiseOnDemand]: 230/247 looper letters, 32 selfloop transitions, 2 changer transitions 9/50 dead transitions. [2023-08-03 21:25:14,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 200 flow [2023-08-03 21:25:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:25:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:25:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-08-03 21:25:14,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553306342780027 [2023-08-03 21:25:14,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-08-03 21:25:14,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-08-03 21:25:14,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:14,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-08-03 21:25:14,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,056 INFO L175 Difference]: Start difference. First operand has 43 places, 54 transitions, 126 flow. Second operand 3 states and 410 transitions. [2023-08-03 21:25:14,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 200 flow [2023-08-03 21:25:14,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 200 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:25:14,058 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 82 flow [2023-08-03 21:25:14,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2023-08-03 21:25:14,059 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2023-08-03 21:25:14,059 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 82 flow [2023-08-03 21:25:14,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:14,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:25:14,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:25:14,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:25:14,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:14,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1654649784, now seen corresponding path program 1 times [2023-08-03 21:25:14,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:14,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530773964] [2023-08-03 21:25:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:14,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:14,092 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 21:25:14,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:14,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530773964] [2023-08-03 21:25:14,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530773964] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:25:14,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391939504] [2023-08-03 21:25:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:14,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:25:14,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:25:14,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:25:14,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 21:25:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:14,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:25:14,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:25:14,150 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 21:25:14,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:25:14,164 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 21:25:14,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391939504] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:25:14,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:25:14,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 21:25:14,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488659629] [2023-08-03 21:25:14,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:25:14,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:25:14,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:14,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:25:14,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:25:14,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 247 [2023-08-03 21:25:14,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:14,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 247 [2023-08-03 21:25:14,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:14,282 INFO L124 PetriNetUnfolderBase]: 808/1390 cut-off events. [2023-08-03 21:25:14,282 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-08-03 21:25:14,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2929 conditions, 1390 events. 808/1390 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7298 event pairs, 72 based on Foata normal form. 9/1399 useless extension candidates. Maximal degree in co-relation 331. Up to 901 conditions per place. [2023-08-03 21:25:14,287 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 47 selfloop transitions, 3 changer transitions 1/58 dead transitions. [2023-08-03 21:25:14,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 58 transitions, 236 flow [2023-08-03 21:25:14,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:25:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:25:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 512 transitions. [2023-08-03 21:25:14,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182186234817814 [2023-08-03 21:25:14,288 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 512 transitions. [2023-08-03 21:25:14,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 512 transitions. [2023-08-03 21:25:14,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:14,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 512 transitions. [2023-08-03 21:25:14,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,291 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 247.0) internal successors, (1235), 5 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,292 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 82 flow. Second operand 4 states and 512 transitions. [2023-08-03 21:25:14,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 58 transitions, 236 flow [2023-08-03 21:25:14,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:25:14,293 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 94 flow [2023-08-03 21:25:14,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-08-03 21:25:14,293 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2023-08-03 21:25:14,293 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 94 flow [2023-08-03 21:25:14,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:14,294 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 21:25:14,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 21:25:14,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 21:25:14,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:25:14,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:14,500 INFO L85 PathProgramCache]: Analyzing trace with hash -655421235, now seen corresponding path program 1 times [2023-08-03 21:25:14,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:14,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918814025] [2023-08-03 21:25:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:14,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:14,614 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 21:25:14,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:14,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918814025] [2023-08-03 21:25:14,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918814025] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:25:14,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305374235] [2023-08-03 21:25:14,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:14,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:25:14,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:25:14,616 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 21:25:14,618 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 21:25:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:14,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-03 21:25:14,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:25:14,703 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 21:25:14,703 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-03 21:25:14,724 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 21:25:14,759 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 21:25:14,784 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 21:25:14,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:25:14,800 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_56 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_56) c_~g2~0.base) c_~g2~0.offset) 0)) is different from false [2023-08-03 21:25:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-03 21:25:14,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305374235] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:25:14,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:25:14,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-03 21:25:14,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952956793] [2023-08-03 21:25:14,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:25:14,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 21:25:14,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:14,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 21:25:14,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=17, Unknown=1, NotChecked=8, Total=42 [2023-08-03 21:25:14,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 247 [2023-08-03 21:25:14,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:14,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 247 [2023-08-03 21:25:14,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:14,973 INFO L124 PetriNetUnfolderBase]: 796/1392 cut-off events. [2023-08-03 21:25:14,974 INFO L125 PetriNetUnfolderBase]: For 988/988 co-relation queries the response was YES. [2023-08-03 21:25:14,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3277 conditions, 1392 events. 796/1392 cut-off events. For 988/988 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6790 event pairs, 316 based on Foata normal form. 16/1408 useless extension candidates. Maximal degree in co-relation 2471. Up to 1145 conditions per place. [2023-08-03 21:25:14,978 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 38 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-03 21:25:14,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 226 flow [2023-08-03 21:25:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:25:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:25:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-08-03 21:25:14,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4143049932523617 [2023-08-03 21:25:14,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-08-03 21:25:14,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-08-03 21:25:14,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:14,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-08-03 21:25:14,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,983 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 94 flow. Second operand 3 states and 307 transitions. [2023-08-03 21:25:14,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 226 flow [2023-08-03 21:25:14,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 214 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 21:25:14,985 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 106 flow [2023-08-03 21:25:14,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-08-03 21:25:14,987 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2023-08-03 21:25:14,987 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 106 flow [2023-08-03 21:25:14,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:14,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:14,988 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:25:14,995 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 21:25:15,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:25:15,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:25:15,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1746074072, now seen corresponding path program 1 times [2023-08-03 21:25:15,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:15,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907441472] [2023-08-03 21:25:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:15,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:15,247 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 21:25:15,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:15,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907441472] [2023-08-03 21:25:15,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907441472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:25:15,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:25:15,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:25:15,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041795436] [2023-08-03 21:25:15,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:25:15,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:25:15,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:15,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:25:15,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:25:15,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 247 [2023-08-03 21:25:15,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:15,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:15,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 247 [2023-08-03 21:25:15,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:15,346 INFO L124 PetriNetUnfolderBase]: 366/783 cut-off events. [2023-08-03 21:25:15,346 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 21:25:15,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 783 events. 366/783 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3802 event pairs, 151 based on Foata normal form. 146/929 useless extension candidates. Maximal degree in co-relation 1106. Up to 412 conditions per place. [2023-08-03 21:25:15,349 INFO L140 encePairwiseOnDemand]: 236/247 looper letters, 38 selfloop transitions, 11 changer transitions 0/54 dead transitions. [2023-08-03 21:25:15,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 267 flow [2023-08-03 21:25:15,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:25:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:25:15,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-08-03 21:25:15,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006747638326585 [2023-08-03 21:25:15,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-08-03 21:25:15,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-08-03 21:25:15,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:15,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-08-03 21:25:15,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:15,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:15,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:15,353 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 106 flow. Second operand 3 states and 371 transitions. [2023-08-03 21:25:15,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 267 flow [2023-08-03 21:25:15,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:25:15,355 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 160 flow [2023-08-03 21:25:15,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2023-08-03 21:25:15,355 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-03 21:25:15,355 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 160 flow [2023-08-03 21:25:15,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:15,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:15,356 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:25:15,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 21:25:15,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:25:15,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash 532812617, now seen corresponding path program 1 times [2023-08-03 21:25:15,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:15,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232187990] [2023-08-03 21:25:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:15,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:25:15,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:25:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:25:15,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:25:15,377 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:25:15,377 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-03 21:25:15,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 21:25:15,377 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-03 21:25:15,377 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (2/2) [2023-08-03 21:25:15,379 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:25:15,379 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:25:15,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:25:15 BasicIcfg [2023-08-03 21:25:15,402 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:25:15,402 INFO L158 Benchmark]: Toolchain (without parser) took 10839.75ms. Allocated memory was 645.9MB in the beginning and 775.9MB in the end (delta: 130.0MB). Free memory was 606.2MB in the beginning and 654.9MB in the end (delta: -48.7MB). Peak memory consumption was 82.9MB. Max. memory is 16.0GB. [2023-08-03 21:25:15,402 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 388.0MB. Free memory is still 340.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:25:15,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.71ms. Allocated memory is still 645.9MB. Free memory was 605.8MB in the beginning and 586.0MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 21:25:15,403 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.11ms. Allocated memory is still 645.9MB. Free memory was 586.0MB in the beginning and 583.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:25:15,403 INFO L158 Benchmark]: Boogie Preprocessor took 31.05ms. Allocated memory is still 645.9MB. Free memory was 583.9MB in the beginning and 582.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:25:15,403 INFO L158 Benchmark]: RCFGBuilder took 589.26ms. Allocated memory is still 645.9MB. Free memory was 582.3MB in the beginning and 567.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 21:25:15,403 INFO L158 Benchmark]: TraceAbstraction took 9795.96ms. Allocated memory was 645.9MB in the beginning and 775.9MB in the end (delta: 130.0MB). Free memory was 566.8MB in the beginning and 654.9MB in the end (delta: -88.1MB). Peak memory consumption was 43.0MB. Max. memory is 16.0GB. [2023-08-03 21:25:15,404 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 388.0MB. Free memory is still 340.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 377.71ms. Allocated memory is still 645.9MB. Free memory was 605.8MB in the beginning and 586.0MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.11ms. Allocated memory is still 645.9MB. Free memory was 586.0MB in the beginning and 583.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.05ms. Allocated memory is still 645.9MB. Free memory was 583.9MB in the beginning and 582.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 589.26ms. Allocated memory is still 645.9MB. Free memory was 582.3MB in the beginning and 567.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 9795.96ms. Allocated memory was 645.9MB in the beginning and 775.9MB in the end (delta: 130.0MB). Free memory was 566.8MB in the beginning and 654.9MB in the end (delta: -88.1MB). Peak memory consumption was 43.0MB. 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: 2.5s, 95 PlacesBefore, 26 PlacesAfterwards, 103 TransitionsBefore, 31 TransitionsAfterwards, 2432 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 85 TotalNumberOfCompositions, 4247 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2615, independent: 2463, independent conditional: 0, independent unconditional: 2463, dependent: 152, dependent conditional: 0, dependent unconditional: 152, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1337, independent: 1297, independent conditional: 0, independent unconditional: 1297, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2615, independent: 1166, independent conditional: 0, independent unconditional: 1166, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 1337, unknown conditional: 0, unknown unconditional: 1337] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 97, Positive conditional cache size: 0, Positive unconditional cache size: 97, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 128 PlacesBefore, 43 PlacesAfterwards, 142 TransitionsBefore, 54 TransitionsAfterwards, 7616 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 105 TotalNumberOfCompositions, 15436 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6635, independent: 6374, independent conditional: 0, independent unconditional: 6374, dependent: 261, dependent conditional: 0, dependent unconditional: 261, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3636, independent: 3585, independent conditional: 0, independent unconditional: 3585, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6635, independent: 2789, independent conditional: 0, independent unconditional: 2789, dependent: 210, dependent conditional: 0, dependent unconditional: 210, unknown: 3636, unknown conditional: 0, unknown unconditional: 3636] , Statistics on independence cache: Total cache size (in pairs): 199, Positive cache size: 175, Positive conditional cache size: 0, Positive unconditional cache size: 175, 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 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 128 PlacesBefore, 43 PlacesAfterwards, 142 TransitionsBefore, 54 TransitionsAfterwards, 7616 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 105 TotalNumberOfCompositions, 15610 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7058, independent: 6793, independent conditional: 0, independent unconditional: 6793, dependent: 265, dependent conditional: 0, dependent unconditional: 265, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3683, independent: 3628, independent conditional: 0, independent unconditional: 3628, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7058, independent: 3165, independent conditional: 0, independent unconditional: 3165, dependent: 210, dependent conditional: 0, dependent unconditional: 210, unknown: 3683, unknown conditional: 0, unknown unconditional: 3683] , Statistics on independence cache: Total cache size (in pairs): 244, Positive cache size: 217, Positive conditional cache size: 0, Positive unconditional cache size: 217, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 691]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 int g; [L698] 0 int *g1; [L699] 0 int *g2; [L700] 0 pthread_mutex_t mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L708] EXPR 0 g2 = &g [L708] 0 g1 = g2 = &g [L709] 0 pthread_t t_ids[2]; [L709] 0 int i=0; VAL [__global_lock={3:0}, g1={4:0}, g2={4:0}, g={4:0}, i=0, mutex={5:0}, t_ids={6:0}] [L709] COND TRUE 0 i<2 [L709] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [__global_lock={3:0}, arg={0:0}, g1={4:0}, g2={4:0}, g={4:0}, i=0, mutex={5:0}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-2, t_ids={6:0}] [L709] 0 i++ VAL [__global_lock={3:0}, arg={0:0}, g1={4:0}, g2={4:0}, g={4:0}, i=1, mutex={5:0}, t_ids={6:0}] [L709] COND TRUE 0 i<2 [L703] EXPR 1 \read(*g1) VAL [\read(*g1)=0, __global_lock={3:0}, arg={0:0}, arg={0:0}, g1={4:0}, g2={4:0}, g={4:0}, mutex={5:0}] [L703] 1 (*g1)++ [L709] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [__global_lock={3:0}, arg={0:0}, arg={0:0}, g1={4:0}, g2={4:0}, g={4:0}, i=1, mutex={5:0}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-1, t_ids={6:0}] [L709] 0 i++ VAL [__global_lock={3:0}, arg={0:0}, arg={0:0}, g1={4:0}, g2={4:0}, g={4:0}, i=2, mutex={5:0}, t_ids={6:0}] [L709] COND FALSE 0 !(i<2) VAL [__global_lock={3:0}, arg={0:0}, arg={0:0}, g1={4:0}, g2={4:0}, g={4:0}, i=2, mutex={5:0}, t_ids={6:0}] [L710] EXPR 0 \read(*g2) [L710] CALL 0 __VERIFIER_assert((*g2) == 0) [L691] COND TRUE 0 !(cond) [L691] 0 reach_error() VAL [\old(cond)=0, __global_lock={3:0}, arg={0:0}, arg={0:0}, cond=0, g1={4:0}, g2={4:0}, g={4:0}, mutex={5:0}] - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 124 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: 2.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 151 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: 3.2s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 121 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 1 mSDtfsCounter, 121 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 134 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 151 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: 3.7s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 163 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 113 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 59 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 313 IncrementalHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 9 mSDtfsCounter, 313 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred in iteration=4, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 73 ConstructedInterpolants, 5 QuantifiedInterpolants, 481 SizeOfPredicates, 3 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 9/27 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-03 21:25:15,422 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...