/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-74.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 10:59:16,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 10:59:16,819 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 10:59:16,824 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 10:59:16,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 10:59:16,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 10:59:16,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 10:59:16,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 10:59:16,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 10:59:16,850 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 10:59:16,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 10:59:16,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 10:59:16,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 10:59:16,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 10:59:16,852 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 10:59:16,852 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 10:59:16,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 10:59:16,853 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 10:59:16,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 10:59:16,853 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 10:59:16,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 10:59:16,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 10:59:16,854 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 10:59:16,854 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 10:59:16,854 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 10:59:16,854 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 10:59:16,854 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 10:59:16,854 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 10:59:16,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 10:59:16,855 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 10:59:16,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 10:59:16,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 10:59:16,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 10:59:16,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 10:59:16,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:59:16,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 10:59:16,856 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 10:59:16,856 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 10:59:16,857 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 10:59:16,857 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 10:59:16,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 10:59:16,857 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 10:59:16,857 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 10:59:16,857 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 10:59:16,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 10:59:16,858 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 10:59:16,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 10:59:17,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 10:59:17,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 10:59:17,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 10:59:17,085 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 10:59:17,085 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 10:59:17,087 INFO L431 ainManager$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-74.i [2023-12-16 10:59:18,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 10:59:18,326 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 10:59:18,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-74.i [2023-12-16 10:59:18,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0205d3083/5475ff2130c74842b80a2bedd5e817b1/FLAG6244f2514 [2023-12-16 10:59:18,352 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0205d3083/5475ff2130c74842b80a2bedd5e817b1 [2023-12-16 10:59:18,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 10:59:18,355 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 10:59:18,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 10:59:18,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 10:59:18,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 10:59:18,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b611de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18, skipping insertion in model container [2023-12-16 10:59:18,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,391 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 10:59:18,503 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-74.i[915,928] [2023-12-16 10:59:18,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:59:18,563 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 10:59:18,571 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-74.i[915,928] [2023-12-16 10:59:18,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:59:18,608 INFO L206 MainTranslator]: Completed translation [2023-12-16 10:59:18,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18 WrapperNode [2023-12-16 10:59:18,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 10:59:18,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 10:59:18,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 10:59:18,609 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 10:59:18,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,650 INFO L138 Inliner]: procedures = 27, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 206 [2023-12-16 10:59:18,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 10:59:18,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 10:59:18,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 10:59:18,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 10:59:18,664 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,694 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,704 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 10:59:18,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,721 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,723 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 10:59:18,728 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 10:59:18,728 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 10:59:18,728 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 10:59:18,728 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18" (1/1) ... [2023-12-16 10:59:18,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:59:18,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 10:59:18,751 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 10:59:18,796 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 10:59:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 10:59:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 10:59:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 10:59:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 10:59:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 10:59:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 10:59:18,866 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 10:59:18,868 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 10:59:20,696 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 10:59:20,729 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 10:59:20,729 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 10:59:20,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:59:20 BoogieIcfgContainer [2023-12-16 10:59:20,729 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 10:59:20,731 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 10:59:20,731 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 10:59:20,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 10:59:20,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 10:59:18" (1/3) ... [2023-12-16 10:59:20,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152cc55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:59:20, skipping insertion in model container [2023-12-16 10:59:20,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:59:18" (2/3) ... [2023-12-16 10:59:20,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152cc55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:59:20, skipping insertion in model container [2023-12-16 10:59:20,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:59:20" (3/3) ... [2023-12-16 10:59:20,746 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-74.i [2023-12-16 10:59:20,757 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 10:59:20,757 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 10:59:20,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 10:59:20,794 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;@3305212a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 10:59:20,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 10:59:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 48 states have internal predecessors, (65), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-16 10:59:20,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-16 10:59:20,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:59:20,808 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:20,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:59:20,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:59:20,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1984465036, now seen corresponding path program 1 times [2023-12-16 10:59:20,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:59:20,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349626128] [2023-12-16 10:59:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:59:20,821 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 [2023-12-16 10:59:20,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:59:20,827 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) [2023-12-16 10:59:20,828 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 [2023-12-16 10:59:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:59:21,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 10:59:21,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:59:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1174 proven. 0 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2023-12-16 10:59:21,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:59:21,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:59:21,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349626128] [2023-12-16 10:59:21,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349626128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:59:21,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:59:21,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 10:59:21,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769572087] [2023-12-16 10:59:21,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:59:21,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 10:59:21,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:59:21,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 10:59:21,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:59:21,225 INFO L87 Difference]: Start difference. First operand has 86 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 48 states have internal predecessors, (65), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-16 10:59:23,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:59:23,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:59:23,453 INFO L93 Difference]: Finished difference Result 168 states and 306 transitions. [2023-12-16 10:59:23,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 10:59:23,484 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 216 [2023-12-16 10:59:23,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:59:23,489 INFO L225 Difference]: With dead ends: 168 [2023-12-16 10:59:23,489 INFO L226 Difference]: Without dead ends: 83 [2023-12-16 10:59:23,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 215 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 10:59:23,496 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 10:59:23,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 10:59:23,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-16 10:59:23,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-16 10:59:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-16 10:59:23,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 129 transitions. [2023-12-16 10:59:23,535 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 129 transitions. Word has length 216 [2023-12-16 10:59:23,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:59:23,536 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 129 transitions. [2023-12-16 10:59:23,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-16 10:59:23,536 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 129 transitions. [2023-12-16 10:59:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-16 10:59:23,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:59:23,539 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:23,554 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 [2023-12-16 10:59:23,750 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 [2023-12-16 10:59:23,751 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:59:23,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:59:23,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2090605504, now seen corresponding path program 1 times [2023-12-16 10:59:23,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:59:23,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210041039] [2023-12-16 10:59:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:59:23,752 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 [2023-12-16 10:59:23,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:59:23,754 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) [2023-12-16 10:59:23,757 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 [2023-12-16 10:59:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:59:24,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 10:59:24,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:59:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-12-16 10:59:25,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:59:25,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:59:25,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210041039] [2023-12-16 10:59:25,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210041039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:59:25,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:59:25,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 10:59:25,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315880831] [2023-12-16 10:59:25,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:59:25,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 10:59:25,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:59:25,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 10:59:25,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 10:59:25,232 INFO L87 Difference]: Start difference. First operand 83 states and 129 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-16 10:59:27,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:59:29,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:59:29,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:59:29,804 INFO L93 Difference]: Finished difference Result 248 states and 386 transitions. [2023-12-16 10:59:29,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 10:59:29,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 216 [2023-12-16 10:59:29,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:59:29,838 INFO L225 Difference]: With dead ends: 248 [2023-12-16 10:59:29,838 INFO L226 Difference]: Without dead ends: 166 [2023-12-16 10:59:29,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 10:59:29,840 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 85 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-16 10:59:29,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 407 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-16 10:59:29,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-16 10:59:29,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2023-12-16 10:59:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 74 states have internal predecessors, (88), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-16 10:59:29,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 232 transitions. [2023-12-16 10:59:29,887 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 232 transitions. Word has length 216 [2023-12-16 10:59:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:59:29,889 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 232 transitions. [2023-12-16 10:59:29,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-16 10:59:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 232 transitions. [2023-12-16 10:59:29,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-16 10:59:29,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:59:29,899 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:29,923 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 [2023-12-16 10:59:30,112 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 [2023-12-16 10:59:30,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:59:30,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:59:30,113 INFO L85 PathProgramCache]: Analyzing trace with hash -508636732, now seen corresponding path program 1 times [2023-12-16 10:59:30,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:59:30,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927623746] [2023-12-16 10:59:30,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:59:30,114 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 [2023-12-16 10:59:30,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:59:30,115 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) [2023-12-16 10:59:30,117 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 [2023-12-16 10:59:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:59:30,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 10:59:30,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:59:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-12-16 10:59:31,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:59:31,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:59:31,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927623746] [2023-12-16 10:59:31,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927623746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:59:31,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:59:31,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 10:59:31,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513914173] [2023-12-16 10:59:31,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:59:31,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 10:59:31,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:59:31,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 10:59:31,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 10:59:31,745 INFO L87 Difference]: Start difference. First operand 149 states and 232 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-16 10:59:33,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:59:35,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:59:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:59:35,997 INFO L93 Difference]: Finished difference Result 248 states and 385 transitions. [2023-12-16 10:59:36,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 10:59:36,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 217 [2023-12-16 10:59:36,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:59:36,032 INFO L225 Difference]: With dead ends: 248 [2023-12-16 10:59:36,033 INFO L226 Difference]: Without dead ends: 166 [2023-12-16 10:59:36,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 10:59:36,036 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 81 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-16 10:59:36,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 408 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-16 10:59:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-16 10:59:36,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 150. [2023-12-16 10:59:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 75 states have internal predecessors, (89), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-16 10:59:36,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 233 transitions. [2023-12-16 10:59:36,069 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 233 transitions. Word has length 217 [2023-12-16 10:59:36,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:59:36,070 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 233 transitions. [2023-12-16 10:59:36,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-16 10:59:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 233 transitions. [2023-12-16 10:59:36,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-16 10:59:36,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:59:36,074 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:36,091 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 [2023-12-16 10:59:36,283 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 [2023-12-16 10:59:36,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:59:36,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:59:36,288 INFO L85 PathProgramCache]: Analyzing trace with hash 192427846, now seen corresponding path program 1 times [2023-12-16 10:59:36,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:59:36,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839519219] [2023-12-16 10:59:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:59:36,289 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 [2023-12-16 10:59:36,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:59:36,290 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) [2023-12-16 10:59:36,315 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 [2023-12-16 10:59:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:59:36,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 10:59:36,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:59:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 989 proven. 78 refuted. 0 times theorem prover too weak. 1453 trivial. 0 not checked. [2023-12-16 10:59:36,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:59:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 27 proven. 78 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-12-16 10:59:37,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:59:37,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839519219] [2023-12-16 10:59:37,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839519219] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:59:37,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:59:37,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-16 10:59:37,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112649041] [2023-12-16 10:59:37,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:59:37,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 10:59:37,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:59:37,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 10:59:37,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 10:59:37,211 INFO L87 Difference]: Start difference. First operand 150 states and 233 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-16 10:59:40,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:59:40,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:59:40,215 INFO L93 Difference]: Finished difference Result 247 states and 373 transitions. [2023-12-16 10:59:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 10:59:40,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 217 [2023-12-16 10:59:40,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:59:40,219 INFO L225 Difference]: With dead ends: 247 [2023-12-16 10:59:40,219 INFO L226 Difference]: Without dead ends: 165 [2023-12-16 10:59:40,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 426 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 10:59:40,221 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 62 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 10:59:40,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 169 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 10:59:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-16 10:59:40,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2023-12-16 10:59:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 80 states have (on average 1.1375) internal successors, (91), 80 states have internal predecessors, (91), 72 states have call successors, (72), 4 states have call predecessors, (72), 4 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-16 10:59:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 235 transitions. [2023-12-16 10:59:40,235 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 235 transitions. Word has length 217 [2023-12-16 10:59:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:59:40,236 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 235 transitions. [2023-12-16 10:59:40,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (62), 2 states have call predecessors, (62), 4 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2023-12-16 10:59:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 235 transitions. [2023-12-16 10:59:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-16 10:59:40,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:59:40,237 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:40,252 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 (5)] Forceful destruction successful, exit code 0 [2023-12-16 10:59:40,450 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 [2023-12-16 10:59:40,450 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:59:40,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:59:40,451 INFO L85 PathProgramCache]: Analyzing trace with hash 249686148, now seen corresponding path program 1 times [2023-12-16 10:59:40,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:59:40,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414101462] [2023-12-16 10:59:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:59:40,451 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 [2023-12-16 10:59:40,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:59:40,453 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) [2023-12-16 10:59:40,461 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 [2023-12-16 10:59:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:59:40,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 10:59:40,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:59:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1082 proven. 144 refuted. 0 times theorem prover too weak. 1294 trivial. 0 not checked. [2023-12-16 10:59:41,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:59:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 30 proven. 75 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-12-16 10:59:42,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:59:42,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414101462] [2023-12-16 10:59:42,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414101462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:59:42,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:59:42,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-12-16 10:59:42,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436396198] [2023-12-16 10:59:42,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:59:42,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 10:59:42,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:59:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 10:59:42,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-16 10:59:42,116 INFO L87 Difference]: Start difference. First operand 157 states and 235 transitions. Second operand has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 4 states have call successors, (61), 3 states have call predecessors, (61), 5 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2023-12-16 10:59:46,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:59:48,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 10:59:49,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:59:49,092 INFO L93 Difference]: Finished difference Result 305 states and 430 transitions. [2023-12-16 10:59:49,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 10:59:49,093 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 4 states have call successors, (61), 3 states have call predecessors, (61), 5 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) Word has length 217 [2023-12-16 10:59:49,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:59:49,094 INFO L225 Difference]: With dead ends: 305 [2023-12-16 10:59:49,095 INFO L226 Difference]: Without dead ends: 220 [2023-12-16 10:59:49,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2023-12-16 10:59:49,096 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 126 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-16 10:59:49,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 466 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-16 10:59:49,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-12-16 10:59:49,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 197. [2023-12-16 10:59:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 107 states have (on average 1.1121495327102804) internal successors, (119), 108 states have internal predecessors, (119), 80 states have call successors, (80), 9 states have call predecessors, (80), 9 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-16 10:59:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 279 transitions. [2023-12-16 10:59:49,117 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 279 transitions. Word has length 217 [2023-12-16 10:59:49,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:59:49,117 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 279 transitions. [2023-12-16 10:59:49,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 16 states have internal predecessors, (79), 4 states have call successors, (61), 3 states have call predecessors, (61), 5 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2023-12-16 10:59:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 279 transitions. [2023-12-16 10:59:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-16 10:59:49,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:59:49,120 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:49,145 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 [2023-12-16 10:59:49,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-16 10:59:49,332 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:59:49,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:59:49,332 INFO L85 PathProgramCache]: Analyzing trace with hash 249745730, now seen corresponding path program 1 times [2023-12-16 10:59:49,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:59:49,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087921287] [2023-12-16 10:59:49,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:59:49,333 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 [2023-12-16 10:59:49,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:59:49,334 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2023-12-16 10:59:49,335 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 (7)] Waiting until timeout for monitored process [2023-12-16 10:59:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:59:49,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-16 10:59:49,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 11:00:33,676 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 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:00:33,677 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 11:00:34,173 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 11:00:34,185 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 (7)] Forceful destruction successful, exit code 0 [2023-12-16 11:00:34,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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 [2023-12-16 11:00:34,374 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 218 with TraceHistMax 36,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-16-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-16 11:00:34,379 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-16 11:00:34,381 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 11:00:34,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 11:00:34 BoogieIcfgContainer [2023-12-16 11:00:34,383 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 11:00:34,383 INFO L158 Benchmark]: Toolchain (without parser) took 76028.52ms. Allocated memory was 282.1MB in the beginning and 338.7MB in the end (delta: 56.6MB). Free memory was 231.7MB in the beginning and 172.8MB in the end (delta: 58.9MB). Peak memory consumption was 116.2MB. Max. memory is 8.0GB. [2023-12-16 11:00:34,383 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 226.5MB. Free memory is still 178.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 11:00:34,384 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.95ms. Allocated memory is still 282.1MB. Free memory was 231.7MB in the beginning and 216.3MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 11:00:34,384 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.90ms. Allocated memory is still 282.1MB. Free memory was 216.3MB in the beginning and 213.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 11:00:34,384 INFO L158 Benchmark]: Boogie Preprocessor took 75.44ms. Allocated memory is still 282.1MB. Free memory was 213.9MB in the beginning and 210.4MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 11:00:34,384 INFO L158 Benchmark]: RCFGBuilder took 2001.78ms. Allocated memory is still 282.1MB. Free memory was 210.4MB in the beginning and 234.7MB in the end (delta: -24.3MB). Peak memory consumption was 18.6MB. Max. memory is 8.0GB. [2023-12-16 11:00:34,384 INFO L158 Benchmark]: TraceAbstraction took 73652.15ms. Allocated memory was 282.1MB in the beginning and 338.7MB in the end (delta: 56.6MB). Free memory was 234.1MB in the beginning and 172.8MB in the end (delta: 61.3MB). Peak memory consumption was 117.4MB. Max. memory is 8.0GB. [2023-12-16 11:00:34,385 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 226.5MB. Free memory is still 178.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 251.95ms. Allocated memory is still 282.1MB. Free memory was 231.7MB in the beginning and 216.3MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.90ms. Allocated memory is still 282.1MB. Free memory was 216.3MB in the beginning and 213.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 75.44ms. Allocated memory is still 282.1MB. Free memory was 213.9MB in the beginning and 210.4MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 2001.78ms. Allocated memory is still 282.1MB. Free memory was 210.4MB in the beginning and 234.7MB in the end (delta: -24.3MB). Peak memory consumption was 18.6MB. Max. memory is 8.0GB. * TraceAbstraction took 73652.15ms. Allocated memory was 282.1MB in the beginning and 338.7MB in the end (delta: 56.6MB). Free memory was 234.1MB in the beginning and 172.8MB in the end (delta: 61.3MB). Peak memory consumption was 117.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 218 with TraceHistMax 36,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-16-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.6s, OverallIterations: 6, TraceHistogramMax: 36, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 21.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 382 SdHoareTripleChecker+Valid, 20.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 354 mSDsluCounter, 1576 SdHoareTripleChecker+Invalid, 19.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1033 mSDsCounter, 249 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1363 IncrementalHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 249 mSolverCounterUnsat, 543 mSDtfsCounter, 1363 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1530 GetRequests, 1483 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=5, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 64 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1083 NumberOfCodeBlocks, 1083 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1510 ConstructedInterpolants, 0 QuantifiedInterpolants, 6194 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1759 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 17265/17640 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown