/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 03:20:29,521 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 03:20:29,602 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 03:20:29,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 03:20:29,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 03:20:29,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 03:20:29,637 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 03:20:29,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 03:20:29,638 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 03:20:29,641 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 03:20:29,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 03:20:29,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 03:20:29,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 03:20:29,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 03:20:29,644 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 03:20:29,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 03:20:29,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 03:20:29,645 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 03:20:29,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 03:20:29,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 03:20:29,647 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 03:20:29,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 03:20:29,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 03:20:29,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 03:20:29,648 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 03:20:29,648 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 03:20:29,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 03:20:29,648 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 03:20:29,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 03:20:29,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 03:20:29,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 03:20:29,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 03:20:29,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:20:29,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 03:20:29,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 03:20:29,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 03:20:29,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 03:20:29,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 03:20:29,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 03:20:29,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 03:20:29,652 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 03:20:29,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 03:20:29,653 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 03:20:29,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 03:20:29,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 03:20:29,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 03:20:29,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 03:20:29,944 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 03:20:29,944 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 03:20:29,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i [2023-12-16 03:20:31,242 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 03:20:31,482 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 03:20:31,483 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i [2023-12-16 03:20:31,495 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33dcafb39/0ca56a7deffc40abbb7e406ad9eb36c6/FLAG4a848482d [2023-12-16 03:20:31,510 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33dcafb39/0ca56a7deffc40abbb7e406ad9eb36c6 [2023-12-16 03:20:31,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 03:20:31,514 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 03:20:31,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 03:20:31,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 03:20:31,520 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 03:20:31,521 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:31,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aba3b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31, skipping insertion in model container [2023-12-16 03:20:31,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:31,559 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 03:20:31,706 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i[919,932] [2023-12-16 03:20:31,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:20:31,810 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 03:20:31,819 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i[919,932] [2023-12-16 03:20:31,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 03:20:31,871 INFO L206 MainTranslator]: Completed translation [2023-12-16 03:20:31,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31 WrapperNode [2023-12-16 03:20:31,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 03:20:31,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 03:20:31,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 03:20:31,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 03:20:31,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:31,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:31,954 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 211 [2023-12-16 03:20:31,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 03:20:31,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 03:20:31,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 03:20:31,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 03:20:31,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:31,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:31,976 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:31,996 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 03:20:32,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:32,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:32,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:32,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:32,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:32,036 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:32,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 03:20:32,055 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 03:20:32,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 03:20:32,055 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 03:20:32,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31" (1/1) ... [2023-12-16 03:20:32,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 03:20:32,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:20:32,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 03:20:32,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 03:20:32,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 03:20:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 03:20:32,117 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 03:20:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 03:20:32,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 03:20:32,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 03:20:32,220 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 03:20:32,224 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 03:20:32,697 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 03:20:32,732 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 03:20:32,732 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 03:20:32,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:20:32 BoogieIcfgContainer [2023-12-16 03:20:32,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 03:20:32,734 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 03:20:32,734 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 03:20:32,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 03:20:32,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:20:31" (1/3) ... [2023-12-16 03:20:32,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4c2c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:20:32, skipping insertion in model container [2023-12-16 03:20:32,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:31" (2/3) ... [2023-12-16 03:20:32,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4c2c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:20:32, skipping insertion in model container [2023-12-16 03:20:32,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:20:32" (3/3) ... [2023-12-16 03:20:32,739 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-56.i [2023-12-16 03:20:32,758 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 03:20:32,758 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 03:20:32,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 03:20:32,873 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=LoopHeads, 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;@6ed4ca4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 03:20:32,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 03:20:32,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 53 states have internal predecessors, (73), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 03:20:32,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-16 03:20:32,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:20:32,905 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:20:32,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:20:32,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:20:32,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1027618551, now seen corresponding path program 1 times [2023-12-16 03:20:32,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:20:32,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023385353] [2023-12-16 03:20:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:20:32,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:20:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:20:33,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:20:33,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023385353] [2023-12-16 03:20:33,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-16 03:20:33,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125516144] [2023-12-16 03:20:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:20:33,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:20:33,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:20:33,143 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) [2023-12-16 03:20:33,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 03:20:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:20:33,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 03:20:33,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:20:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-12-16 03:20:33,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:20:33,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125516144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:20:33,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:20:33,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:20:33,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734746829] [2023-12-16 03:20:33,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:20:33,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 03:20:33,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:20:33,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 03:20:33,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:20:33,428 INFO L87 Difference]: Start difference. First operand has 89 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 53 states have internal predecessors, (73), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-16 03:20:33,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:20:33,466 INFO L93 Difference]: Finished difference Result 175 states and 314 transitions. [2023-12-16 03:20:33,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 03:20:33,469 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 212 [2023-12-16 03:20:33,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:20:33,478 INFO L225 Difference]: With dead ends: 175 [2023-12-16 03:20:33,478 INFO L226 Difference]: Without dead ends: 87 [2023-12-16 03:20:33,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 03:20:33,484 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:20:33,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:20:33,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-16 03:20:33,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-12-16 03:20:33,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 03:20:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 136 transitions. [2023-12-16 03:20:33,545 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 136 transitions. Word has length 212 [2023-12-16 03:20:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:20:33,546 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 136 transitions. [2023-12-16 03:20:33,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-16 03:20:33,546 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 136 transitions. [2023-12-16 03:20:33,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-16 03:20:33,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:20:33,555 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:20:33,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 03:20:33,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-16 03:20:33,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:20:33,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:20:33,768 INFO L85 PathProgramCache]: Analyzing trace with hash 945040321, now seen corresponding path program 1 times [2023-12-16 03:20:33,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:20:33,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722397952] [2023-12-16 03:20:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:20:33,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:20:33,852 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:20:33,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101008081] [2023-12-16 03:20:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:20:33,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:20:33,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:20:33,857 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) [2023-12-16 03:20:33,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 03:20:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:20:34,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 03:20:34,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:20:34,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-16 03:20:34,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:20:34,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:20:34,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722397952] [2023-12-16 03:20:34,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:20:34,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101008081] [2023-12-16 03:20:34,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101008081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:20:34,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:20:34,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 03:20:34,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53191740] [2023-12-16 03:20:34,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:20:34,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 03:20:34,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:20:34,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 03:20:34,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 03:20:34,540 INFO L87 Difference]: Start difference. First operand 87 states and 136 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-16 03:20:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:20:34,745 INFO L93 Difference]: Finished difference Result 264 states and 399 transitions. [2023-12-16 03:20:34,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 03:20:34,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 212 [2023-12-16 03:20:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:20:34,748 INFO L225 Difference]: With dead ends: 264 [2023-12-16 03:20:34,749 INFO L226 Difference]: Without dead ends: 178 [2023-12-16 03:20:34,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 03:20:34,751 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 207 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 03:20:34,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 515 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 03:20:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-16 03:20:34,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 127. [2023-12-16 03:20:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 87 states have internal predecessors, (120), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-16 03:20:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 196 transitions. [2023-12-16 03:20:34,772 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 196 transitions. Word has length 212 [2023-12-16 03:20:34,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:20:34,773 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 196 transitions. [2023-12-16 03:20:34,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-16 03:20:34,774 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 196 transitions. [2023-12-16 03:20:34,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-16 03:20:34,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:20:34,777 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:20:34,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 03:20:34,983 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,SelfDestructingSolverStorable1 [2023-12-16 03:20:34,984 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:20:34,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:20:34,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1646104899, now seen corresponding path program 1 times [2023-12-16 03:20:34,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:20:34,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069038163] [2023-12-16 03:20:34,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:20:34,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:20:35,074 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:20:35,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939136187] [2023-12-16 03:20:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:20:35,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:20:35,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:20:35,085 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) [2023-12-16 03:20:35,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 03:20:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:20:35,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 03:20:35,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:20:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 505 proven. 87 refuted. 0 times theorem prover too weak. 1652 trivial. 0 not checked. [2023-12-16 03:20:35,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 03:20:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 12 proven. 87 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-12-16 03:20:35,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:20:35,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069038163] [2023-12-16 03:20:35,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:20:35,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939136187] [2023-12-16 03:20:35,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939136187] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 03:20:35,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 03:20:35,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 03:20:35,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65103789] [2023-12-16 03:20:35,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 03:20:35,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 03:20:35,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:20:35,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 03:20:35,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 03:20:35,787 INFO L87 Difference]: Start difference. First operand 127 states and 196 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-12-16 03:20:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:20:36,008 INFO L93 Difference]: Finished difference Result 261 states and 398 transitions. [2023-12-16 03:20:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 03:20:36,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 212 [2023-12-16 03:20:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:20:36,012 INFO L225 Difference]: With dead ends: 261 [2023-12-16 03:20:36,012 INFO L226 Difference]: Without dead ends: 130 [2023-12-16 03:20:36,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 416 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-16 03:20:36,014 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 45 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 03:20:36,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 212 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 03:20:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-16 03:20:36,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2023-12-16 03:20:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 84 states have (on average 1.3452380952380953) internal successors, (113), 85 states have internal predecessors, (113), 38 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-16 03:20:36,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 189 transitions. [2023-12-16 03:20:36,042 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 189 transitions. Word has length 212 [2023-12-16 03:20:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:20:36,043 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 189 transitions. [2023-12-16 03:20:36,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-12-16 03:20:36,043 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 189 transitions. [2023-12-16 03:20:36,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-16 03:20:36,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:20:36,046 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:20:36,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 03:20:36,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:20:36,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:20:36,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:20:36,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1367742147, now seen corresponding path program 1 times [2023-12-16 03:20:36,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:20:36,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432006415] [2023-12-16 03:20:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:20:36,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:20:36,338 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:20:36,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209312379] [2023-12-16 03:20:36,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:20:36,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:20:36,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:20:36,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:20:36,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 03:20:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:20:36,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 03:20:36,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:20:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2023-12-16 03:20:36,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 03:20:36,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 03:20:36,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432006415] [2023-12-16 03:20:36,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 03:20:36,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209312379] [2023-12-16 03:20:36,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209312379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 03:20:36,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 03:20:36,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 03:20:36,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223184069] [2023-12-16 03:20:36,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 03:20:36,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 03:20:36,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 03:20:36,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 03:20:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:20:36,875 INFO L87 Difference]: Start difference. First operand 126 states and 189 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-16 03:20:36,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 03:20:36,919 INFO L93 Difference]: Finished difference Result 351 states and 527 transitions. [2023-12-16 03:20:36,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 03:20:36,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 212 [2023-12-16 03:20:36,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 03:20:36,922 INFO L225 Difference]: With dead ends: 351 [2023-12-16 03:20:36,922 INFO L226 Difference]: Without dead ends: 226 [2023-12-16 03:20:36,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 03:20:36,927 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 35 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 03:20:36,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 295 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 03:20:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-16 03:20:36,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 224. [2023-12-16 03:20:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 141 states have (on average 1.3049645390070923) internal successors, (184), 143 states have internal predecessors, (184), 76 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-16 03:20:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 336 transitions. [2023-12-16 03:20:36,967 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 336 transitions. Word has length 212 [2023-12-16 03:20:36,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 03:20:36,968 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 336 transitions. [2023-12-16 03:20:36,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2023-12-16 03:20:36,969 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 336 transitions. [2023-12-16 03:20:36,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-12-16 03:20:36,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 03:20:36,971 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 03:20:36,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 03:20:37,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:20:37,178 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 03:20:37,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 03:20:37,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1464257659, now seen corresponding path program 1 times [2023-12-16 03:20:37,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 03:20:37,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984572905] [2023-12-16 03:20:37,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:20:37,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 03:20:37,224 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 03:20:37,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429823395] [2023-12-16 03:20:37,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 03:20:37,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 03:20:37,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 03:20:37,226 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 03:20:37,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 03:20:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 03:20:37,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-16 03:20:37,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 03:20:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1165 proven. 345 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2023-12-16 03:20:40,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 03:21:27,209 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:21:27,218 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 03:21:28,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 03:21:28,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown