/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_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-42.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 01:18:16,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 01:18:16,726 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 01:18:16,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 01:18:16,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 01:18:16,748 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 01:18:16,749 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 01:18:16,749 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 01:18:16,750 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 01:18:16,750 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 01:18:16,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 01:18:16,751 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 01:18:16,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 01:18:16,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 01:18:16,752 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 01:18:16,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 01:18:16,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 01:18:16,753 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 01:18:16,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 01:18:16,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 01:18:16,754 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 01:18:16,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 01:18:16,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 01:18:16,755 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 01:18:16,755 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 01:18:16,756 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 01:18:16,756 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 01:18:16,756 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 01:18:16,757 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 01:18:16,757 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 01:18:16,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 01:18:16,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 01:18:16,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 01:18:16,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 01:18:16,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 01:18:16,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 01:18:16,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 01:18:16,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 01:18:16,760 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 01:18:16,761 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 01:18:16,761 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 01:18:16,761 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 01:18:16,762 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 01:18:16,762 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 01:18:16,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 01:18:16,763 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 01:18:16,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 01:18:16,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 01:18:16,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 01:18:16,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 01:18:16,981 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 01:18:16,981 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 01:18:16,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-42.i [2023-12-23 01:18:18,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 01:18:18,297 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 01:18:18,298 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-42.i [2023-12-23 01:18:18,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1368de6c/bc43e6101300418eb3580e3ecb641530/FLAGc615b9618 [2023-12-23 01:18:18,319 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1368de6c/bc43e6101300418eb3580e3ecb641530 [2023-12-23 01:18:18,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 01:18:18,323 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 01:18:18,323 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 01:18:18,323 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 01:18:18,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 01:18:18,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423dd4f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18, skipping insertion in model container [2023-12-23 01:18:18,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,354 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 01:18:18,506 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_fillercodesize_ps-cn-10_file-42.i[915,928] [2023-12-23 01:18:18,553 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 01:18:18,569 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 01:18:18,579 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_fillercodesize_ps-cn-10_file-42.i[915,928] [2023-12-23 01:18:18,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 01:18:18,623 INFO L206 MainTranslator]: Completed translation [2023-12-23 01:18:18,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18 WrapperNode [2023-12-23 01:18:18,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 01:18:18,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 01:18:18,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 01:18:18,625 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 01:18:18,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,673 INFO L138 Inliner]: procedures = 27, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 156 [2023-12-23 01:18:18,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 01:18:18,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 01:18:18,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 01:18:18,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 01:18:18,690 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,711 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]. [2023-12-23 01:18:18,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,730 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 01:18:18,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 01:18:18,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 01:18:18,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 01:18:18,747 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18" (1/1) ... [2023-12-23 01:18:18,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 01:18:18,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 01:18:18,779 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) [2023-12-23 01:18:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 01:18:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 01:18:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 01:18:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 01:18:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 01:18:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 01:18:18,808 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 [2023-12-23 01:18:18,936 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 01:18:18,940 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 01:18:19,314 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 01:18:19,365 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 01:18:19,366 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 01:18:19,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:18:19 BoogieIcfgContainer [2023-12-23 01:18:19,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 01:18:19,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 01:18:19,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 01:18:19,371 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 01:18:19,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:18:18" (1/3) ... [2023-12-23 01:18:19,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7310dbce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:18:19, skipping insertion in model container [2023-12-23 01:18:19,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:18:18" (2/3) ... [2023-12-23 01:18:19,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7310dbce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:18:19, skipping insertion in model container [2023-12-23 01:18:19,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:18:19" (3/3) ... [2023-12-23 01:18:19,373 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-42.i [2023-12-23 01:18:19,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 01:18:19,391 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 01:18:19,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 01:18:19,486 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;@89c6113, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 01:18:19,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 01:18:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 39 states have internal predecessors, (55), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-23 01:18:19,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-23 01:18:19,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 01:18:19,502 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 01:18:19,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 01:18:19,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 01:18:19,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1136470914, now seen corresponding path program 1 times [2023-12-23 01:18:19,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 01:18:19,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468533911] [2023-12-23 01:18:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 01:18:19,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 01:18:19,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 01:18:19,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 01:18:19,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 01:18:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 01:18:19,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 01:18:19,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 01:18:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-12-23 01:18:19,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 01:18:19,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 01:18:19,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468533911] [2023-12-23 01:18:19,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468533911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 01:18:19,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 01:18:19,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 01:18:19,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249444870] [2023-12-23 01:18:19,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 01:18:19,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 01:18:19,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 01:18:19,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 01:18:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 01:18:19,909 INFO L87 Difference]: Start difference. First operand has 60 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 39 states have internal predecessors, (55), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-23 01:18:20,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 01:18:20,022 INFO L93 Difference]: Finished difference Result 117 states and 203 transitions. [2023-12-23 01:18:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 01:18:20,032 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 124 [2023-12-23 01:18:20,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 01:18:20,038 INFO L225 Difference]: With dead ends: 117 [2023-12-23 01:18:20,038 INFO L226 Difference]: Without dead ends: 58 [2023-12-23 01:18:20,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 01:18:20,044 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 01:18:20,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 01:18:20,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-23 01:18:20,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-12-23 01:18:20,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-23 01:18:20,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 88 transitions. [2023-12-23 01:18:20,080 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 88 transitions. Word has length 124 [2023-12-23 01:18:20,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 01:18:20,080 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 88 transitions. [2023-12-23 01:18:20,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-12-23 01:18:20,081 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 88 transitions. [2023-12-23 01:18:20,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-23 01:18:20,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 01:18:20,084 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 01:18:20,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 01:18:20,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 01:18:20,286 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 01:18:20,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 01:18:20,287 INFO L85 PathProgramCache]: Analyzing trace with hash -128251904, now seen corresponding path program 1 times [2023-12-23 01:18:20,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 01:18:20,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404850206] [2023-12-23 01:18:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 01:18:20,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 01:18:20,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 01:18:20,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 01:18:20,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 01:18:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 01:18:20,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 01:18:20,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 01:18:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-23 01:18:20,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 01:18:20,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 01:18:20,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404850206] [2023-12-23 01:18:20,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404850206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 01:18:20,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 01:18:20,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 01:18:20,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529040813] [2023-12-23 01:18:20,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 01:18:20,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 01:18:20,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 01:18:20,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 01:18:20,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 01:18:20,857 INFO L87 Difference]: Start difference. First operand 58 states and 88 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-23 01:18:21,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 01:18:21,215 INFO L93 Difference]: Finished difference Result 173 states and 263 transitions. [2023-12-23 01:18:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 01:18:21,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 124 [2023-12-23 01:18:21,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 01:18:21,227 INFO L225 Difference]: With dead ends: 173 [2023-12-23 01:18:21,228 INFO L226 Difference]: Without dead ends: 116 [2023-12-23 01:18:21,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 01:18:21,230 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 71 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 01:18:21,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 249 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 01:18:21,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-23 01:18:21,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 96. [2023-12-23 01:18:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 55 states have internal predecessors, (69), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-23 01:18:21,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 145 transitions. [2023-12-23 01:18:21,255 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 145 transitions. Word has length 124 [2023-12-23 01:18:21,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 01:18:21,256 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 145 transitions. [2023-12-23 01:18:21,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-23 01:18:21,256 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 145 transitions. [2023-12-23 01:18:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-23 01:18:21,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 01:18:21,261 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 01:18:21,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 01:18:21,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 01:18:21,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 01:18:21,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 01:18:21,463 INFO L85 PathProgramCache]: Analyzing trace with hash -348339201, now seen corresponding path program 1 times [2023-12-23 01:18:21,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 01:18:21,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213525683] [2023-12-23 01:18:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 01:18:21,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 01:18:21,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 01:18:21,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 01:18:21,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 01:18:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 01:18:21,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 01:18:21,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 01:18:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-23 01:18:22,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 01:18:22,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 01:18:22,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213525683] [2023-12-23 01:18:22,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213525683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 01:18:22,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 01:18:22,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 01:18:22,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082356813] [2023-12-23 01:18:22,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 01:18:22,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 01:18:22,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 01:18:22,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 01:18:22,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-23 01:18:22,283 INFO L87 Difference]: Start difference. First operand 96 states and 145 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-23 01:18:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 01:18:22,902 INFO L93 Difference]: Finished difference Result 227 states and 343 transitions. [2023-12-23 01:18:22,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 01:18:22,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 125 [2023-12-23 01:18:22,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 01:18:22,913 INFO L225 Difference]: With dead ends: 227 [2023-12-23 01:18:22,913 INFO L226 Difference]: Without dead ends: 170 [2023-12-23 01:18:22,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-23 01:18:22,915 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 101 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-23 01:18:22,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 300 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-23 01:18:22,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-23 01:18:22,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 151. [2023-12-23 01:18:22,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.288888888888889) internal successors, (116), 90 states have internal predecessors, (116), 57 states have call successors, (57), 3 states have call predecessors, (57), 3 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-23 01:18:22,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 230 transitions. [2023-12-23 01:18:22,944 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 230 transitions. Word has length 125 [2023-12-23 01:18:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 01:18:22,944 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 230 transitions. [2023-12-23 01:18:22,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-23 01:18:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 230 transitions. [2023-12-23 01:18:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-23 01:18:22,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 01:18:22,946 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 01:18:22,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 01:18:23,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 01:18:23,156 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 01:18:23,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 01:18:23,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1359456451, now seen corresponding path program 1 times [2023-12-23 01:18:23,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 01:18:23,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859328275] [2023-12-23 01:18:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 01:18:23,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 01:18:23,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 01:18:23,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 01:18:23,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 01:18:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 01:18:23,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 01:18:23,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 01:18:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 443 proven. 51 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-23 01:18:23,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 01:18:23,940 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 51 proven. 54 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2023-12-23 01:18:23,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 01:18:23,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859328275] [2023-12-23 01:18:23,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859328275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 01:18:23,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 01:18:23,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-23 01:18:23,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155853442] [2023-12-23 01:18:23,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 01:18:23,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 01:18:23,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 01:18:23,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 01:18:23,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-23 01:18:23,944 INFO L87 Difference]: Start difference. First operand 151 states and 230 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 3 states have call successors, (30), 3 states have call predecessors, (30), 7 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-23 01:18:24,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 01:18:24,906 INFO L93 Difference]: Finished difference Result 330 states and 466 transitions. [2023-12-23 01:18:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-23 01:18:24,907 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 3 states have call successors, (30), 3 states have call predecessors, (30), 7 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 125 [2023-12-23 01:18:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 01:18:24,909 INFO L225 Difference]: With dead ends: 330 [2023-12-23 01:18:24,910 INFO L226 Difference]: Without dead ends: 273 [2023-12-23 01:18:24,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2023-12-23 01:18:24,912 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 118 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-23 01:18:24,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 309 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-23 01:18:24,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-23 01:18:24,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 247. [2023-12-23 01:18:24,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 158 states have (on average 1.2658227848101267) internal successors, (200), 158 states have internal predecessors, (200), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-23 01:18:24,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 352 transitions. [2023-12-23 01:18:24,965 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 352 transitions. Word has length 125 [2023-12-23 01:18:24,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 01:18:24,966 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 352 transitions. [2023-12-23 01:18:24,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 3 states have call successors, (30), 3 states have call predecessors, (30), 7 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-23 01:18:24,966 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 352 transitions. [2023-12-23 01:18:24,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-23 01:18:24,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 01:18:24,968 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 01:18:24,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-23 01:18:25,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 01:18:25,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 01:18:25,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 01:18:25,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1946262465, now seen corresponding path program 1 times [2023-12-23 01:18:25,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 01:18:25,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214114371] [2023-12-23 01:18:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 01:18:25,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 01:18:25,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 01:18:25,179 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 01:18:25,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 01:18:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 01:18:25,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 01:18:25,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 01:18:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 150 proven. 48 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2023-12-23 01:18:26,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 01:18:26,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 01:18:26,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214114371] [2023-12-23 01:18:26,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214114371] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 01:18:26,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1963992648] [2023-12-23 01:18:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 01:18:26,678 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 01:18:26,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 01:18:26,730 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 01:18:26,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-23 01:18:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 01:18:27,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 01:18:27,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 01:18:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-23 01:18:27,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 01:18:27,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1963992648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 01:18:27,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 01:18:27,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-12-23 01:18:27,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022459643] [2023-12-23 01:18:27,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 01:18:27,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 01:18:27,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 01:18:27,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 01:18:27,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-23 01:18:27,893 INFO L87 Difference]: Start difference. First operand 247 states and 352 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-23 01:18:31,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 01:18:31,019 INFO L93 Difference]: Finished difference Result 675 states and 957 transitions. [2023-12-23 01:18:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 01:18:31,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 125 [2023-12-23 01:18:31,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 01:18:31,034 INFO L225 Difference]: With dead ends: 675 [2023-12-23 01:18:31,034 INFO L226 Difference]: Without dead ends: 548 [2023-12-23 01:18:31,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-23 01:18:31,035 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 135 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-23 01:18:31,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 389 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-23 01:18:31,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-12-23 01:18:31,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 480. [2023-12-23 01:18:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 319 states have (on average 1.2852664576802508) internal successors, (410), 321 states have internal predecessors, (410), 137 states have call successors, (137), 23 states have call predecessors, (137), 23 states have return successors, (137), 135 states have call predecessors, (137), 137 states have call successors, (137) [2023-12-23 01:18:31,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 684 transitions. [2023-12-23 01:18:31,093 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 684 transitions. Word has length 125 [2023-12-23 01:18:31,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 01:18:31,094 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 684 transitions. [2023-12-23 01:18:31,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-23 01:18:31,094 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 684 transitions. [2023-12-23 01:18:31,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-23 01:18:31,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 01:18:31,095 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 01:18:31,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-23 01:18:31,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-23 01:18:31,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 01:18:31,501 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 01:18:31,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 01:18:31,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1688097027, now seen corresponding path program 1 times [2023-12-23 01:18:31,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 01:18:31,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662069806] [2023-12-23 01:18:31,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 01:18:31,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 01:18:31,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 01:18:31,504 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 01:18:31,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 01:18:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 01:18:31,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 01:18:31,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 01:18:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 150 proven. 48 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2023-12-23 01:18:32,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 01:18:33,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 01:18:33,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662069806] [2023-12-23 01:18:33,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662069806] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 01:18:33,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1084843789] [2023-12-23 01:18:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 01:18:33,147 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 01:18:33,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 01:18:33,149 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 01:18:33,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-23 01:18:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 01:18:33,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 01:18:33,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 01:18:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-23 01:18:34,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 01:18:34,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1084843789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 01:18:34,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 01:18:34,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-12-23 01:18:34,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676956691] [2023-12-23 01:18:34,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 01:18:34,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 01:18:34,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 01:18:34,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 01:18:34,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-12-23 01:18:34,665 INFO L87 Difference]: Start difference. First operand 480 states and 684 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-23 01:18:37,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 01:18:37,449 INFO L93 Difference]: Finished difference Result 838 states and 1195 transitions. [2023-12-23 01:18:37,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 01:18:37,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 125 [2023-12-23 01:18:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 01:18:37,455 INFO L225 Difference]: With dead ends: 838 [2023-12-23 01:18:37,456 INFO L226 Difference]: Without dead ends: 644 [2023-12-23 01:18:37,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-12-23 01:18:37,457 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 87 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-23 01:18:37,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 317 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-23 01:18:37,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2023-12-23 01:18:37,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 605. [2023-12-23 01:18:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 400 states have (on average 1.2775) internal successors, (511), 402 states have internal predecessors, (511), 175 states have call successors, (175), 29 states have call predecessors, (175), 29 states have return successors, (175), 173 states have call predecessors, (175), 175 states have call successors, (175) [2023-12-23 01:18:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 861 transitions. [2023-12-23 01:18:37,527 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 861 transitions. Word has length 125 [2023-12-23 01:18:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 01:18:37,528 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 861 transitions. [2023-12-23 01:18:37,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-12-23 01:18:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 861 transitions. [2023-12-23 01:18:37,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-23 01:18:37,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 01:18:37,530 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 01:18:37,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-23 01:18:37,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-23 01:18:37,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 01:18:37,936 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 01:18:37,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 01:18:37,936 INFO L85 PathProgramCache]: Analyzing trace with hash 985921385, now seen corresponding path program 1 times [2023-12-23 01:18:37,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 01:18:37,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017355445] [2023-12-23 01:18:37,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 01:18:37,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 01:18:37,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 01:18:37,938 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 01:18:37,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-23 01:18:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 01:18:38,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-23 01:18:38,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-23 01:26:02,150 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 01:26:02,151 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 [2023-12-23 01:26:03,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-23 01:26:03,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown