/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_fillercodestructure_filler-pr-cn_file-15.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 12:17:15,918 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 12:17:15,988 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 12:17:15,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 12:17:15,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 12:17:16,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 12:17:16,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 12:17:16,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 12:17:16,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 12:17:16,019 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 12:17:16,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 12:17:16,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 12:17:16,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 12:17:16,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 12:17:16,020 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 12:17:16,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 12:17:16,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 12:17:16,021 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 12:17:16,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 12:17:16,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 12:17:16,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 12:17:16,023 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 12:17:16,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 12:17:16,023 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 12:17:16,023 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 12:17:16,023 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 12:17:16,023 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 12:17:16,023 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 12:17:16,024 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 12:17:16,024 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 12:17:16,024 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 12:17:16,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 12:17:16,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 12:17:16,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 12:17:16,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:17:16,025 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 12:17:16,025 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 12:17:16,025 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 12:17:16,025 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 12:17:16,025 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 12:17:16,026 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 12:17:16,026 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 12:17:16,026 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 12:17:16,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 12:17:16,026 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 12:17:16,026 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 12:17:16,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 12:17:16,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 12:17:16,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 12:17:16,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 12:17:16,223 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 12:17:16,224 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 12:17:16,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-15.i [2023-12-16 12:17:17,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 12:17:17,403 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 12:17:17,403 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-15.i [2023-12-16 12:17:17,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a624b30/ddda3f295c9a4795b210e4a9470ccb37/FLAGf1f7305c1 [2023-12-16 12:17:17,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a624b30/ddda3f295c9a4795b210e4a9470ccb37 [2023-12-16 12:17:17,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 12:17:17,426 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 12:17:17,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 12:17:17,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 12:17:17,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 12:17:17,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6687c005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17, skipping insertion in model container [2023-12-16 12:17:17,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,462 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 12:17:17,569 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-15.i[919,932] [2023-12-16 12:17:17,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:17:17,642 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 12:17:17,650 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-15.i[919,932] [2023-12-16 12:17:17,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:17:17,725 INFO L206 MainTranslator]: Completed translation [2023-12-16 12:17:17,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17 WrapperNode [2023-12-16 12:17:17,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 12:17:17,728 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 12:17:17,728 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 12:17:17,728 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 12:17:17,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,776 INFO L138 Inliner]: procedures = 27, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 251 [2023-12-16 12:17:17,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 12:17:17,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 12:17:17,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 12:17:17,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 12:17:17,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,789 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,802 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 12:17:17,802 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,803 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,823 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 12:17:17,842 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 12:17:17,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 12:17:17,843 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 12:17:17,843 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17" (1/1) ... [2023-12-16 12:17:17,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:17:17,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 12:17:17,877 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 12:17:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 12:17:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 12:17:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 12:17:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 12:17:17,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 12:17:17,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 12:17:17,904 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 12:17:18,006 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 12:17:18,009 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 12:17:25,370 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 12:17:25,399 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 12:17:25,399 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 12:17:25,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:17:25 BoogieIcfgContainer [2023-12-16 12:17:25,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 12:17:25,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 12:17:25,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 12:17:25,403 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 12:17:25,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:17:17" (1/3) ... [2023-12-16 12:17:25,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9143ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:17:25, skipping insertion in model container [2023-12-16 12:17:25,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:17:17" (2/3) ... [2023-12-16 12:17:25,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9143ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:17:25, skipping insertion in model container [2023-12-16 12:17:25,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:17:25" (3/3) ... [2023-12-16 12:17:25,405 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-15.i [2023-12-16 12:17:25,416 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 12:17:25,416 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 12:17:25,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 12:17:25,458 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;@47dba21e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 12:17:25,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 12:17:25,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 62 states have (on average 1.435483870967742) internal successors, (89), 63 states have internal predecessors, (89), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 12:17:25,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-16 12:17:25,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:17:25,492 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:25,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:17:25,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:17:25,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1712530484, now seen corresponding path program 1 times [2023-12-16 12:17:25,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:17:25,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026515436] [2023-12-16 12:17:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:17:25,507 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 12:17:25,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:17:25,510 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 12:17:25,517 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 12:17:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:17:25,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 12:17:25,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:17:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1322 proven. 0 refuted. 0 times theorem prover too weak. 2122 trivial. 0 not checked. [2023-12-16 12:17:25,999 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:17:26,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:17:26,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026515436] [2023-12-16 12:17:26,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026515436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:17:26,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:17:26,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 12:17:26,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457427859] [2023-12-16 12:17:26,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:17:26,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 12:17:26,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:17:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 12:17:26,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:17:26,027 INFO L87 Difference]: Start difference. First operand has 107 states, 62 states have (on average 1.435483870967742) internal successors, (89), 63 states have internal predecessors, (89), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-16 12:17:26,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:17:26,610 INFO L93 Difference]: Finished difference Result 211 states and 386 transitions. [2023-12-16 12:17:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 12:17:26,638 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 256 [2023-12-16 12:17:26,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:17:26,644 INFO L225 Difference]: With dead ends: 211 [2023-12-16 12:17:26,644 INFO L226 Difference]: Without dead ends: 105 [2023-12-16 12:17:26,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 255 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 12:17:26,655 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 12:17:26,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 12:17:26,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-16 12:17:26,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-16 12:17:26,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 61 states have internal predecessors, (84), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-16 12:17:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 168 transitions. [2023-12-16 12:17:26,702 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 168 transitions. Word has length 256 [2023-12-16 12:17:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:17:26,702 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 168 transitions. [2023-12-16 12:17:26,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-16 12:17:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 168 transitions. [2023-12-16 12:17:26,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-16 12:17:26,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:17:26,707 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:26,719 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 12:17:26,917 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 12:17:26,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:17:26,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:17:26,918 INFO L85 PathProgramCache]: Analyzing trace with hash -250821652, now seen corresponding path program 1 times [2023-12-16 12:17:26,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:17:26,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992269292] [2023-12-16 12:17:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:17:26,920 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 12:17:26,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:17:26,921 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 12:17:26,923 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 12:17:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:17:27,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 12:17:27,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:17:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-16 12:17:28,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:17:28,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:17:28,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992269292] [2023-12-16 12:17:28,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992269292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:17:28,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:17:28,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 12:17:28,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924954302] [2023-12-16 12:17:28,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:17:28,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 12:17:28,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:17:28,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 12:17:28,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 12:17:28,925 INFO L87 Difference]: Start difference. First operand 105 states and 168 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-16 12:17:30,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:17:32,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:17:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:17:32,410 INFO L93 Difference]: Finished difference Result 314 states and 503 transitions. [2023-12-16 12:17:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 12:17:32,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 256 [2023-12-16 12:17:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:17:32,440 INFO L225 Difference]: With dead ends: 314 [2023-12-16 12:17:32,440 INFO L226 Difference]: Without dead ends: 210 [2023-12-16 12:17:32,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 12:17:32,441 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 85 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-16 12:17:32,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 482 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-16 12:17:32,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-16 12:17:32,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 178. [2023-12-16 12:17:32,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 91 states have (on average 1.2527472527472527) internal successors, (114), 91 states have internal predecessors, (114), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-16 12:17:32,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 282 transitions. [2023-12-16 12:17:32,481 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 282 transitions. Word has length 256 [2023-12-16 12:17:32,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:17:32,481 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 282 transitions. [2023-12-16 12:17:32,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-16 12:17:32,482 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 282 transitions. [2023-12-16 12:17:32,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-16 12:17:32,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:17:32,484 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:32,502 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 12:17:32,694 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 12:17:32,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:17:32,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:17:32,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1437143723, now seen corresponding path program 1 times [2023-12-16 12:17:32,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:17:32,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649464549] [2023-12-16 12:17:32,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:17:32,702 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 12:17:32,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:17:32,703 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 12:17:32,730 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 12:17:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:17:33,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 12:17:33,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:17:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-16 12:17:35,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:17:35,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:17:35,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649464549] [2023-12-16 12:17:35,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649464549] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:17:35,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:17:35,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 12:17:35,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310192701] [2023-12-16 12:17:35,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:17:35,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 12:17:35,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:17:35,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 12:17:35,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 12:17:35,371 INFO L87 Difference]: Start difference. First operand 178 states and 282 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-16 12:17:41,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:17:43,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:17:45,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:17:55,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:17:59,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.91s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 12:17:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:17:59,353 INFO L93 Difference]: Finished difference Result 386 states and 616 transitions. [2023-12-16 12:17:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 12:17:59,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 257 [2023-12-16 12:17:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:17:59,378 INFO L225 Difference]: With dead ends: 386 [2023-12-16 12:17:59,378 INFO L226 Difference]: Without dead ends: 282 [2023-12-16 12:17:59,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 12:17:59,379 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 139 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2023-12-16 12:17:59,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 438 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time] [2023-12-16 12:17:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-12-16 12:17:59,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 183. [2023-12-16 12:17:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 96 states have (on average 1.2708333333333333) internal successors, (122), 96 states have internal predecessors, (122), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-16 12:17:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 290 transitions. [2023-12-16 12:17:59,457 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 290 transitions. Word has length 257 [2023-12-16 12:17:59,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:17:59,459 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 290 transitions. [2023-12-16 12:17:59,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-16 12:17:59,460 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 290 transitions. [2023-12-16 12:17:59,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-12-16 12:17:59,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:17:59,465 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:59,484 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 (4)] Ended with exit code 0 [2023-12-16 12:17:59,676 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 12:17:59,677 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:17:59,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:17:59,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1269475671, now seen corresponding path program 1 times [2023-12-16 12:17:59,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:17:59,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596088989] [2023-12-16 12:17:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:17:59,682 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 12:17:59,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:17:59,683 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 12:17:59,687 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 12:18:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:18:00,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 12:18:00,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:18:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 39 proven. 1568 refuted. 0 times theorem prover too weak. 1837 trivial. 0 not checked. [2023-12-16 12:18:01,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:18:02,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 39 proven. 84 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-16 12:18:02,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:18:02,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596088989] [2023-12-16 12:18:02,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596088989] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:18:02,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:18:02,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-16 12:18:02,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117588538] [2023-12-16 12:18:02,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:18:02,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 12:18:02,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:18:02,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 12:18:02,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-16 12:18:02,327 INFO L87 Difference]: Start difference. First operand 183 states and 290 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-16 12:18:05,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:18:08,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:18:10,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:18:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:18:11,244 INFO L93 Difference]: Finished difference Result 409 states and 638 transitions. [2023-12-16 12:18:11,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 12:18:11,260 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) Word has length 257 [2023-12-16 12:18:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:18:11,262 INFO L225 Difference]: With dead ends: 409 [2023-12-16 12:18:11,262 INFO L226 Difference]: Without dead ends: 300 [2023-12-16 12:18:11,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=402, Unknown=0, NotChecked=0, Total=600 [2023-12-16 12:18:11,264 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 476 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-16 12:18:11,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 463 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-12-16 12:18:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-16 12:18:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 186. [2023-12-16 12:18:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 97 states have internal predecessors, (119), 84 states have call successors, (84), 4 states have call predecessors, (84), 4 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-16 12:18:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 287 transitions. [2023-12-16 12:18:11,316 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 287 transitions. Word has length 257 [2023-12-16 12:18:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:18:11,316 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 287 transitions. [2023-12-16 12:18:11,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-16 12:18:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 287 transitions. [2023-12-16 12:18:11,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-16 12:18:11,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:18:11,318 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:11,330 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 12:18:11,518 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 12:18:11,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:18:11,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:18:11,520 INFO L85 PathProgramCache]: Analyzing trace with hash 586259336, now seen corresponding path program 1 times [2023-12-16 12:18:11,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:18:11,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378215704] [2023-12-16 12:18:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:18:11,520 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 [2023-12-16 12:18:11,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:18:11,521 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 12:18:11,522 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 12:18:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:18:11,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 12:18:11,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:18:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1631 proven. 78 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2023-12-16 12:18:12,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:18:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 45 proven. 78 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-16 12:18:12,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:18:12,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378215704] [2023-12-16 12:18:12,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378215704] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:18:12,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:18:12,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-16 12:18:12,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120694179] [2023-12-16 12:18:12,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:18:12,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 12:18:12,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:18:12,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 12:18:12,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 12:18:12,734 INFO L87 Difference]: Start difference. First operand 186 states and 287 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-16 12:18:15,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:18:15,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:18:15,437 INFO L93 Difference]: Finished difference Result 307 states and 464 transitions. [2023-12-16 12:18:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 12:18:15,460 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 258 [2023-12-16 12:18:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:18:15,462 INFO L225 Difference]: With dead ends: 307 [2023-12-16 12:18:15,462 INFO L226 Difference]: Without dead ends: 199 [2023-12-16 12:18:15,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 507 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-16 12:18:15,463 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 210 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 12:18:15,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 270 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 12:18:15,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-16 12:18:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 191. [2023-12-16 12:18:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 100 states have (on average 1.16) internal successors, (116), 100 states have internal predecessors, (116), 84 states have call successors, (84), 6 states have call predecessors, (84), 6 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-16 12:18:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 284 transitions. [2023-12-16 12:18:15,485 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 284 transitions. Word has length 258 [2023-12-16 12:18:15,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:18:15,485 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 284 transitions. [2023-12-16 12:18:15,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-16 12:18:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 284 transitions. [2023-12-16 12:18:15,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-16 12:18:15,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:18:15,487 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:15,496 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 12:18:15,696 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 12:18:15,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:18:15,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:18:15,697 INFO L85 PathProgramCache]: Analyzing trace with hash 276206664, now seen corresponding path program 1 times [2023-12-16 12:18:15,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:18:15,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745290570] [2023-12-16 12:18:15,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:18:15,698 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 12:18:15,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:18:15,699 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 12:18:15,703 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 12:18:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:18:16,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 12:18:16,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:18:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-16 12:18:16,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:18:16,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:18:16,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745290570] [2023-12-16 12:18:16,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745290570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:18:16,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:18:16,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 12:18:16,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658360950] [2023-12-16 12:18:16,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:18:16,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 12:18:16,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:18:16,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 12:18:16,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 12:18:16,106 INFO L87 Difference]: Start difference. First operand 191 states and 284 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-16 12:18:17,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 12:18:18,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:18:18,908 INFO L93 Difference]: Finished difference Result 363 states and 531 transitions. [2023-12-16 12:18:18,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 12:18:18,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 258 [2023-12-16 12:18:18,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:18:18,910 INFO L225 Difference]: With dead ends: 363 [2023-12-16 12:18:18,910 INFO L226 Difference]: Without dead ends: 254 [2023-12-16 12:18:18,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 12:18:18,911 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 77 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-16 12:18:18,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 353 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-16 12:18:18,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-12-16 12:18:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 251. [2023-12-16 12:18:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 137 states have (on average 1.1313868613138687) internal successors, (155), 138 states have internal predecessors, (155), 104 states have call successors, (104), 9 states have call predecessors, (104), 9 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-16 12:18:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 363 transitions. [2023-12-16 12:18:18,936 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 363 transitions. Word has length 258 [2023-12-16 12:18:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:18:18,936 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 363 transitions. [2023-12-16 12:18:18,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-16 12:18:18,937 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 363 transitions. [2023-12-16 12:18:18,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-16 12:18:18,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:18:18,938 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:18,949 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 (7)] Ended with exit code 0 [2023-12-16 12:18:19,148 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 12:18:19,148 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:18:19,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:18:19,149 INFO L85 PathProgramCache]: Analyzing trace with hash -403851706, now seen corresponding path program 1 times [2023-12-16 12:18:19,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:18:19,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721709661] [2023-12-16 12:18:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:18:19,149 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 12:18:19,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:18:19,150 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) [2023-12-16 12:18:19,151 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 [2023-12-16 12:18:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:18:19,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 12:18:19,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:18:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1631 proven. 78 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2023-12-16 12:18:20,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:18:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 45 proven. 78 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-16 12:18:20,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:18:20,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721709661] [2023-12-16 12:18:20,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721709661] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:18:20,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:18:20,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-16 12:18:20,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628739135] [2023-12-16 12:18:20,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:18:20,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 12:18:20,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:18:20,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 12:18:20,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 12:18:20,485 INFO L87 Difference]: Start difference. First operand 251 states and 363 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-16 12:18:22,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:18:22,445 INFO L93 Difference]: Finished difference Result 432 states and 617 transitions. [2023-12-16 12:18:22,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 12:18:22,472 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 258 [2023-12-16 12:18:22,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:18:22,475 INFO L225 Difference]: With dead ends: 432 [2023-12-16 12:18:22,475 INFO L226 Difference]: Without dead ends: 263 [2023-12-16 12:18:22,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 507 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-12-16 12:18:22,476 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 173 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 12:18:22,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 272 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 12:18:22,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-16 12:18:22,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 251. [2023-12-16 12:18:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 137 states have (on average 1.1167883211678833) internal successors, (153), 138 states have internal predecessors, (153), 104 states have call successors, (104), 9 states have call predecessors, (104), 9 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-16 12:18:22,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 361 transitions. [2023-12-16 12:18:22,509 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 361 transitions. Word has length 258 [2023-12-16 12:18:22,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:18:22,510 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 361 transitions. [2023-12-16 12:18:22,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (68), 2 states have call predecessors, (68), 4 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2023-12-16 12:18:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 361 transitions. [2023-12-16 12:18:22,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-16 12:18:22,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:18:22,511 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:22,529 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 (8)] Forceful destruction successful, exit code 0 [2023-12-16 12:18:22,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-16 12:18:22,727 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:18:22,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:18:22,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1371155656, now seen corresponding path program 1 times [2023-12-16 12:18:22,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:18:22,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766490739] [2023-12-16 12:18:22,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:18:22,729 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 12:18:22,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:18:22,731 INFO L229 MonitoredProcess]: Starting monitored process 9 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 12:18:22,735 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 (9)] Waiting until timeout for monitored process [2023-12-16 12:18:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:18:23,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 12:18:23,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 12:18:35,207 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 12:18:35,213 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:18:35,224 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 12:18:35,247 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 12:18:35,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 12:18:35,408 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 259 with TraceHistMax 42,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-2-1 context. [2023-12-16 12:18:35,413 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:18:35,416 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 12:18:35,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:18:35 BoogieIcfgContainer [2023-12-16 12:18:35,417 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 12:18:35,418 INFO L158 Benchmark]: Toolchain (without parser) took 77991.31ms. Allocated memory was 180.4MB in the beginning and 285.2MB in the end (delta: 104.9MB). Free memory was 136.3MB in the beginning and 242.4MB in the end (delta: -106.1MB). Peak memory consumption was 154.5MB. Max. memory is 8.0GB. [2023-12-16 12:18:35,418 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 180.4MB. Free memory is still 131.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 12:18:35,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.06ms. Allocated memory is still 180.4MB. Free memory was 135.9MB in the beginning and 118.6MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-16 12:18:35,418 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.38ms. Allocated memory is still 180.4MB. Free memory was 118.6MB in the beginning and 115.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 12:18:35,418 INFO L158 Benchmark]: Boogie Preprocessor took 65.37ms. Allocated memory is still 180.4MB. Free memory was 115.9MB in the beginning and 111.9MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 12:18:35,419 INFO L158 Benchmark]: RCFGBuilder took 7557.35ms. Allocated memory is still 180.4MB. Free memory was 111.7MB in the beginning and 81.9MB in the end (delta: 29.8MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-16 12:18:35,419 INFO L158 Benchmark]: TraceAbstraction took 70016.16ms. Allocated memory was 180.4MB in the beginning and 285.2MB in the end (delta: 104.9MB). Free memory was 81.3MB in the beginning and 242.4MB in the end (delta: -161.1MB). Peak memory consumption was 100.0MB. Max. memory is 8.0GB. [2023-12-16 12:18:35,420 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 180.4MB. Free memory is still 131.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 299.06ms. Allocated memory is still 180.4MB. Free memory was 135.9MB in the beginning and 118.6MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.38ms. Allocated memory is still 180.4MB. Free memory was 118.6MB in the beginning and 115.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 65.37ms. Allocated memory is still 180.4MB. Free memory was 115.9MB in the beginning and 111.9MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 7557.35ms. Allocated memory is still 180.4MB. Free memory was 111.7MB in the beginning and 81.9MB in the end (delta: 29.8MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * TraceAbstraction took 70016.16ms. Allocated memory was 180.4MB in the beginning and 285.2MB in the end (delta: 104.9MB). Free memory was 81.3MB in the beginning and 242.4MB in the end (delta: -161.1MB). Peak memory consumption was 100.0MB. 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 259 with TraceHistMax 42,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-5-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 70.0s, OverallIterations: 8, TraceHistogramMax: 42, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 44.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1164 SdHoareTripleChecker+Valid, 42.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1160 mSDsluCounter, 2443 SdHoareTripleChecker+Invalid, 41.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1242 mSDsCounter, 919 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1121 IncrementalHoareTripleChecker+Invalid, 2040 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 919 mSolverCounterUnsat, 1201 mSDtfsCounter, 1121 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2599 GetRequests, 2537 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=251occurred in iteration=6, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 268 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 1800 NumberOfCodeBlocks, 1800 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2563 ConstructedInterpolants, 3 QuantifiedInterpolants, 9415 SizeOfPredicates, 23 NumberOfNonLiveVariables, 2888 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 32476/34440 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