/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-68.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 02:46:46,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 02:46:46,706 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 02:46:46,709 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 02:46:46,709 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 02:46:46,722 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 02:46:46,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 02:46:46,723 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 02:46:46,723 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 02:46:46,723 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 02:46:46,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 02:46:46,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 02:46:46,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 02:46:46,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 02:46:46,725 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 02:46:46,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 02:46:46,725 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 02:46:46,725 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 02:46:46,726 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 02:46:46,726 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 02:46:46,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 02:46:46,730 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 02:46:46,730 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 02:46:46,730 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 02:46:46,731 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 02:46:46,731 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 02:46:46,731 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 02:46:46,731 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 02:46:46,731 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 02:46:46,732 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 02:46:46,732 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 02:46:46,732 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 02:46:46,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 02:46:46,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 02:46:46,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:46:46,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 02:46:46,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 02:46:46,733 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 02:46:46,733 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 02:46:46,734 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 02:46:46,734 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 02:46:46,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 02:46:46,737 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 02:46:46,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 02:46:46,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 02:46:46,738 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 02:46:46,738 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 02:46:46,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 02:46:46,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 02:46:46,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 02:46:46,958 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 02:46:46,960 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 02:46:46,960 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-68.i [2023-12-23 02:46:48,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 02:46:48,212 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 02:46:48,212 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-68.i [2023-12-23 02:46:48,220 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3c20f0a7/e35acf4d045643c3818fb59339364abc/FLAGe90034469 [2023-12-23 02:46:48,239 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3c20f0a7/e35acf4d045643c3818fb59339364abc [2023-12-23 02:46:48,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 02:46:48,242 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 02:46:48,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 02:46:48,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 02:46:48,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 02:46:48,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c33890c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48, skipping insertion in model container [2023-12-23 02:46:48,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,287 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 02:46:48,420 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-68.i[916,929] [2023-12-23 02:46:48,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:46:48,558 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 02:46:48,570 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-68.i[916,929] [2023-12-23 02:46:48,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:46:48,685 INFO L206 MainTranslator]: Completed translation [2023-12-23 02:46:48,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48 WrapperNode [2023-12-23 02:46:48,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 02:46:48,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 02:46:48,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 02:46:48,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 02:46:48,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,756 INFO L138 Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 428 [2023-12-23 02:46:48,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 02:46:48,757 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 02:46:48,757 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 02:46:48,757 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 02:46:48,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,782 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,801 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 02:46:48,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,822 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,824 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 02:46:48,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 02:46:48,828 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 02:46:48,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 02:46:48,829 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48" (1/1) ... [2023-12-23 02:46:48,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:46:48,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 02:46:48,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-23 02:46:48,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-23 02:46:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 02:46:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 02:46:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 02:46:48,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 02:46:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 02:46:48,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 02:46:49,025 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 02:46:49,027 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 02:47:16,873 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 02:47:16,976 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 02:47:16,976 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 02:47:16,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:47:16 BoogieIcfgContainer [2023-12-23 02:47:16,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 02:47:16,978 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 02:47:16,978 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 02:47:16,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 02:47:16,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 02:46:48" (1/3) ... [2023-12-23 02:47:16,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6836b01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:47:16, skipping insertion in model container [2023-12-23 02:47:16,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:46:48" (2/3) ... [2023-12-23 02:47:16,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6836b01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:47:16, skipping insertion in model container [2023-12-23 02:47:16,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:47:16" (3/3) ... [2023-12-23 02:47:16,998 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-68.i [2023-12-23 02:47:17,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 02:47:17,015 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 02:47:17,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 02:47:17,090 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;@7b845b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 02:47:17,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 02:47:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 113 states have (on average 1.5575221238938053) internal successors, (176), 114 states have internal predecessors, (176), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-23 02:47:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-12-23 02:47:17,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:47:17,147 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:47:17,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:47:17,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:47:17,159 INFO L85 PathProgramCache]: Analyzing trace with hash -655621867, now seen corresponding path program 1 times [2023-12-23 02:47:17,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:47:17,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380830407] [2023-12-23 02:47:17,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:47:17,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:47:17,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:47:17,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:47:17,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 02:47:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:47:19,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 02:47:19,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:47:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 2508 proven. 165 refuted. 0 times theorem prover too weak. 6171 trivial. 0 not checked. [2023-12-23 02:47:23,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:47:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 33 proven. 165 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-23 02:47:25,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:47:25,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380830407] [2023-12-23 02:47:25,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380830407] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:47:25,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:47:25,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 02:47:25,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481577383] [2023-12-23 02:47:25,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:47:25,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 02:47:25,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:47:26,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 02:47:26,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 02:47:26,028 INFO L87 Difference]: Start difference. First operand has 183 states, 113 states have (on average 1.5575221238938053) internal successors, (176), 114 states have internal predecessors, (176), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-23 02:47:33,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:47:36,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:47:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:47:37,073 INFO L93 Difference]: Finished difference Result 371 states and 695 transitions. [2023-12-23 02:47:37,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 02:47:37,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) Word has length 421 [2023-12-23 02:47:37,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:47:37,109 INFO L225 Difference]: With dead ends: 371 [2023-12-23 02:47:37,109 INFO L226 Difference]: Without dead ends: 189 [2023-12-23 02:47:37,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 834 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 02:47:37,129 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 230 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-23 02:47:37,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 535 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 342 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2023-12-23 02:47:37,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-12-23 02:47:37,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2023-12-23 02:47:37,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 115 states have (on average 1.4869565217391305) internal successors, (171), 115 states have internal predecessors, (171), 67 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-23 02:47:37,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 305 transitions. [2023-12-23 02:47:37,186 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 305 transitions. Word has length 421 [2023-12-23 02:47:37,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:47:37,192 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 305 transitions. [2023-12-23 02:47:37,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-12-23 02:47:37,193 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 305 transitions. [2023-12-23 02:47:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-12-23 02:47:37,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:47:37,198 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:47:37,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 02:47:37,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:47:37,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:47:37,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:47:37,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1066716015, now seen corresponding path program 1 times [2023-12-23 02:47:37,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:47:37,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494599712] [2023-12-23 02:47:37,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:47:37,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:47:37,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:47:37,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:47:37,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 02:47:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:47:39,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 02:47:39,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:47:45,797 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4941 proven. 162 refuted. 0 times theorem prover too weak. 3741 trivial. 0 not checked. [2023-12-23 02:47:45,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:47:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 414 proven. 171 refuted. 0 times theorem prover too weak. 8259 trivial. 0 not checked. [2023-12-23 02:47:50,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:47:50,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494599712] [2023-12-23 02:47:50,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494599712] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:47:50,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:47:50,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2023-12-23 02:47:50,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950769317] [2023-12-23 02:47:50,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:47:50,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-23 02:47:50,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:47:50,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-23 02:47:50,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2023-12-23 02:47:50,062 INFO L87 Difference]: Start difference. First operand 185 states and 305 transitions. Second operand has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 19 states have internal predecessors, (124), 4 states have call successors, (93), 4 states have call predecessors, (93), 10 states have return successors, (94), 4 states have call predecessors, (94), 4 states have call successors, (94) [2023-12-23 02:48:00,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:48:04,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:48:08,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:48:12,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:48:16,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:48:20,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:48:24,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:48:29,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:48:33,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:48:58,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:02,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:06,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:10,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:14,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:18,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:22,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:27,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:31,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:36,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:40,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:44,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:48,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:52,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:49:56,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:50:00,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:50:05,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:50:09,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:50:09,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:50:09,546 INFO L93 Difference]: Finished difference Result 885 states and 1402 transitions. [2023-12-23 02:50:09,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-23 02:50:09,785 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 19 states have internal predecessors, (124), 4 states have call successors, (93), 4 states have call predecessors, (93), 10 states have return successors, (94), 4 states have call predecessors, (94), 4 states have call successors, (94) Word has length 422 [2023-12-23 02:50:09,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:50:09,791 INFO L225 Difference]: With dead ends: 885 [2023-12-23 02:50:09,791 INFO L226 Difference]: Without dead ends: 701 [2023-12-23 02:50:09,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 832 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1522 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1174, Invalid=3518, Unknown=0, NotChecked=0, Total=4692 [2023-12-23 02:50:09,794 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 1225 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 788 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 3586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 788 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.8s IncrementalHoareTripleChecker+Time [2023-12-23 02:50:09,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 2397 Invalid, 3586 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [788 Valid, 2771 Invalid, 27 Unknown, 0 Unchecked, 133.8s Time] [2023-12-23 02:50:09,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2023-12-23 02:50:09,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 423. [2023-12-23 02:50:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 237 states have (on average 1.3375527426160339) internal successors, (317), 239 states have internal predecessors, (317), 174 states have call successors, (174), 11 states have call predecessors, (174), 11 states have return successors, (174), 172 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-23 02:50:09,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 665 transitions. [2023-12-23 02:50:09,875 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 665 transitions. Word has length 422 [2023-12-23 02:50:09,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:50:09,877 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 665 transitions. [2023-12-23 02:50:09,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.526315789473684) internal successors, (124), 19 states have internal predecessors, (124), 4 states have call successors, (93), 4 states have call predecessors, (93), 10 states have return successors, (94), 4 states have call predecessors, (94), 4 states have call successors, (94) [2023-12-23 02:50:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 665 transitions. [2023-12-23 02:50:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-12-23 02:50:09,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:50:09,881 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:50:09,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 02:50:10,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:50:10,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:50:10,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:50:10,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1576189105, now seen corresponding path program 1 times [2023-12-23 02:50:10,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:50:10,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983960441] [2023-12-23 02:50:10,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:50:10,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:50:10,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:50:10,098 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:50:10,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 02:50:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:50:12,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 02:50:12,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:50:17,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3465 proven. 174 refuted. 0 times theorem prover too weak. 5205 trivial. 0 not checked. [2023-12-23 02:50:17,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:50:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 216 proven. 177 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2023-12-23 02:50:20,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:50:20,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983960441] [2023-12-23 02:50:20,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983960441] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:50:20,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:50:20,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-23 02:50:20,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543954115] [2023-12-23 02:50:20,945 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:50:20,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-23 02:50:20,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:50:20,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-23 02:50:20,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-23 02:50:20,947 INFO L87 Difference]: Start difference. First operand 423 states and 665 transitions. Second operand has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 3 states have call successors, (122), 3 states have call predecessors, (122), 7 states have return successors, (123), 3 states have call predecessors, (123), 3 states have call successors, (123) [2023-12-23 02:50:30,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:50:34,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:50:39,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:50:43,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:50:52,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:50:56,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:50:56,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:50:56,845 INFO L93 Difference]: Finished difference Result 915 states and 1407 transitions. [2023-12-23 02:50:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-23 02:50:57,090 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 3 states have call successors, (122), 3 states have call predecessors, (122), 7 states have return successors, (123), 3 states have call predecessors, (123), 3 states have call successors, (123) Word has length 422 [2023-12-23 02:50:57,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:50:57,095 INFO L225 Difference]: With dead ends: 915 [2023-12-23 02:50:57,095 INFO L226 Difference]: Without dead ends: 559 [2023-12-23 02:50:57,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 833 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=455, Invalid=1105, Unknown=0, NotChecked=0, Total=1560 [2023-12-23 02:50:57,097 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1385 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 746 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time [2023-12-23 02:50:57,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 1127 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 697 Invalid, 6 Unknown, 0 Unchecked, 33.6s Time] [2023-12-23 02:50:57,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-12-23 02:50:57,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 331. [2023-12-23 02:50:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 183 states have (on average 1.2950819672131149) internal successors, (237), 184 states have internal predecessors, (237), 134 states have call successors, (134), 13 states have call predecessors, (134), 13 states have return successors, (134), 133 states have call predecessors, (134), 134 states have call successors, (134) [2023-12-23 02:50:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 505 transitions. [2023-12-23 02:50:57,141 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 505 transitions. Word has length 422 [2023-12-23 02:50:57,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:50:57,142 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 505 transitions. [2023-12-23 02:50:57,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 3 states have call successors, (122), 3 states have call predecessors, (122), 7 states have return successors, (123), 3 states have call predecessors, (123), 3 states have call successors, (123) [2023-12-23 02:50:57,142 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 505 transitions. [2023-12-23 02:50:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-23 02:50:57,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:50:57,145 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:50:57,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 02:50:57,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:50:57,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:50:57,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:50:57,369 INFO L85 PathProgramCache]: Analyzing trace with hash 553607357, now seen corresponding path program 1 times [2023-12-23 02:50:57,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:50:57,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838861939] [2023-12-23 02:50:57,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:50:57,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:50:57,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:50:57,371 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:50:57,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 02:50:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:50:59,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 02:50:59,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:51:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3156 proven. 153 refuted. 0 times theorem prover too weak. 5535 trivial. 0 not checked. [2023-12-23 02:51:03,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:51:05,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 45 proven. 153 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2023-12-23 02:51:05,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:51:05,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838861939] [2023-12-23 02:51:05,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838861939] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:51:05,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:51:05,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 02:51:05,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990487795] [2023-12-23 02:51:05,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:51:05,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 02:51:05,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:51:05,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 02:51:05,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 02:51:05,683 INFO L87 Difference]: Start difference. First operand 331 states and 505 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-23 02:51:13,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:51:17,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:51:21,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:51:22,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:51:22,018 INFO L93 Difference]: Finished difference Result 563 states and 849 transitions. [2023-12-23 02:51:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 02:51:22,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) Word has length 423 [2023-12-23 02:51:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:51:22,043 INFO L225 Difference]: With dead ends: 563 [2023-12-23 02:51:22,044 INFO L226 Difference]: Without dead ends: 363 [2023-12-23 02:51:22,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 838 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 02:51:22,048 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 223 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 56 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-12-23 02:51:22,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 530 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 342 Invalid, 3 Unknown, 0 Unchecked, 16.0s Time] [2023-12-23 02:51:22,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-12-23 02:51:22,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 339. [2023-12-23 02:51:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 189 states have (on average 1.2804232804232805) internal successors, (242), 190 states have internal predecessors, (242), 134 states have call successors, (134), 15 states have call predecessors, (134), 15 states have return successors, (134), 133 states have call predecessors, (134), 134 states have call successors, (134) [2023-12-23 02:51:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 510 transitions. [2023-12-23 02:51:22,087 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 510 transitions. Word has length 423 [2023-12-23 02:51:22,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:51:22,089 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 510 transitions. [2023-12-23 02:51:22,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 2 states have call predecessors, (119), 2 states have call successors, (119) [2023-12-23 02:51:22,090 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 510 transitions. [2023-12-23 02:51:22,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-23 02:51:22,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:51:22,094 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:51:22,143 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 [2023-12-23 02:51:22,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:51:22,303 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:51:22,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:51:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1135336385, now seen corresponding path program 1 times [2023-12-23 02:51:22,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:51:22,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171388005] [2023-12-23 02:51:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:51:22,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:51:22,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:51:22,305 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:51:22,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 02:51:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:51:24,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 02:51:24,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:51:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-23 02:51:29,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:51:29,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:51:29,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171388005] [2023-12-23 02:51:29,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171388005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:51:29,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:51:29,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 02:51:29,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398956979] [2023-12-23 02:51:29,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:51:29,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 02:51:29,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:51:29,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 02:51:29,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:51:29,831 INFO L87 Difference]: Start difference. First operand 339 states and 510 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-23 02:51:30,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:51:30,637 INFO L93 Difference]: Finished difference Result 747 states and 1142 transitions. [2023-12-23 02:51:30,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 02:51:30,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 423 [2023-12-23 02:51:30,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:51:30,641 INFO L225 Difference]: With dead ends: 747 [2023-12-23 02:51:30,641 INFO L226 Difference]: Without dead ends: 543 [2023-12-23 02:51:30,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:51:30,643 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 88 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-23 02:51:30,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 587 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-23 02:51:30,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-12-23 02:51:30,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 540. [2023-12-23 02:51:30,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 316 states have (on average 1.3291139240506329) internal successors, (420), 317 states have internal predecessors, (420), 201 states have call successors, (201), 22 states have call predecessors, (201), 22 states have return successors, (201), 200 states have call predecessors, (201), 201 states have call successors, (201) [2023-12-23 02:51:30,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 822 transitions. [2023-12-23 02:51:30,693 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 822 transitions. Word has length 423 [2023-12-23 02:51:30,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:51:30,693 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 822 transitions. [2023-12-23 02:51:30,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-23 02:51:30,694 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 822 transitions. [2023-12-23 02:51:30,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-23 02:51:30,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:51:30,696 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:51:30,740 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 (6)] Forceful destruction successful, exit code 0 [2023-12-23 02:51:30,913 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 [2023-12-23 02:51:30,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:51:30,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:51:30,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1571283009, now seen corresponding path program 1 times [2023-12-23 02:51:30,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:51:30,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768434475] [2023-12-23 02:51:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:51:30,915 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:51:30,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:51:30,916 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) [2023-12-23 02:51:30,917 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 [2023-12-23 02:51:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:51:32,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 02:51:32,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:51:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-23 02:51:38,905 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:51:38,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:51:38,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768434475] [2023-12-23 02:51:38,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768434475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:51:38,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:51:38,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-23 02:51:38,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722840462] [2023-12-23 02:51:38,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:51:38,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 02:51:38,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:51:38,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 02:51:38,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-23 02:51:38,907 INFO L87 Difference]: Start difference. First operand 540 states and 822 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-23 02:51:47,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:51:47,450 INFO L93 Difference]: Finished difference Result 1507 states and 2333 transitions. [2023-12-23 02:51:47,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 02:51:47,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 423 [2023-12-23 02:51:47,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:51:47,469 INFO L225 Difference]: With dead ends: 1507 [2023-12-23 02:51:47,469 INFO L226 Difference]: Without dead ends: 1102 [2023-12-23 02:51:47,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-23 02:51:47,471 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 637 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-23 02:51:47,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1716 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-23 02:51:47,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2023-12-23 02:51:47,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 643. [2023-12-23 02:51:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 419 states have (on average 1.4248210023866348) internal successors, (597), 419 states have internal predecessors, (597), 201 states have call successors, (201), 22 states have call predecessors, (201), 22 states have return successors, (201), 201 states have call predecessors, (201), 201 states have call successors, (201) [2023-12-23 02:51:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 999 transitions. [2023-12-23 02:51:47,531 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 999 transitions. Word has length 423 [2023-12-23 02:51:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:51:47,531 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 999 transitions. [2023-12-23 02:51:47,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-23 02:51:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 999 transitions. [2023-12-23 02:51:47,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2023-12-23 02:51:47,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:51:47,534 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:51:47,581 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 [2023-12-23 02:51:47,760 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 [2023-12-23 02:51:47,761 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:51:47,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:51:47,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1178255999, now seen corresponding path program 1 times [2023-12-23 02:51:47,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:51:47,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782730741] [2023-12-23 02:51:47,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:51:47,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:51:47,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:51:47,776 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:51:47,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 02:51:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:51:49,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 02:51:49,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:51:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2023-12-23 02:51:49,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:51:49,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:51:49,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782730741] [2023-12-23 02:51:49,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782730741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:51:49,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:51:49,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 02:51:49,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006122116] [2023-12-23 02:51:49,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:51:49,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 02:51:49,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:51:49,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 02:51:49,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 02:51:49,930 INFO L87 Difference]: Start difference. First operand 643 states and 999 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-23 02:51:50,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:51:50,696 INFO L93 Difference]: Finished difference Result 1048 states and 1627 transitions. [2023-12-23 02:51:50,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 02:51:50,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 423 [2023-12-23 02:51:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:51:50,714 INFO L225 Difference]: With dead ends: 1048 [2023-12-23 02:51:50,714 INFO L226 Difference]: Without dead ends: 643 [2023-12-23 02:51:50,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 02:51:50,716 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 302 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-23 02:51:50,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 567 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-23 02:51:50,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-12-23 02:51:50,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2023-12-23 02:51:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 419 states have (on average 1.4200477326968974) internal successors, (595), 419 states have internal predecessors, (595), 201 states have call successors, (201), 22 states have call predecessors, (201), 22 states have return successors, (201), 201 states have call predecessors, (201), 201 states have call successors, (201) [2023-12-23 02:51:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 997 transitions. [2023-12-23 02:51:50,769 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 997 transitions. Word has length 423 [2023-12-23 02:51:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:51:50,770 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 997 transitions. [2023-12-23 02:51:50,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2023-12-23 02:51:50,772 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 997 transitions. [2023-12-23 02:51:50,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-23 02:51:50,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:51:50,774 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:51:50,839 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 [2023-12-23 02:51:50,999 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 [2023-12-23 02:51:51,000 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:51:51,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:51:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1680270509, now seen corresponding path program 1 times [2023-12-23 02:51:51,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:51:51,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236847336] [2023-12-23 02:51:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:51:51,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:51:51,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:51:51,017 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) [2023-12-23 02:51:51,044 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 [2023-12-23 02:51:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:51:52,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-23 02:51:52,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:52:11,305 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 1363 proven. 372 refuted. 0 times theorem prover too weak. 7109 trivial. 0 not checked. [2023-12-23 02:52:11,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:52:16,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:52:16,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236847336] [2023-12-23 02:52:16,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236847336] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:52:16,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [668694334] [2023-12-23 02:52:16,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:52:16,461 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 02:52:16,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 02:52:16,501 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 02:52:16,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-23 02:52:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:52:20,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-23 02:52:20,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:53:37,034 WARN L293 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:53:41,321 WARN L854 $PredicateComparison]: unable to prove that (and (bvsle ((_ zero_extend 24) c_~var_1_5~0) (_ bv0 32)) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse0 ((_ to_fp 8 24) c_currentRoundingMode 9223372036854765600.0))) (or (and (fp.geq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode (fp.neg .cse0))) (fp.leq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode (fp.neg .cse1)))) (and (fp.geq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode .cse1)) (fp.leq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode .cse0))))) (exists ((~var_1_61~0 (_ FloatingPoint 11 53)) (~var_1_21~0 (_ FloatingPoint 11 53)) (~var_1_43~0 (_ FloatingPoint 11 53))) (fp.eq ~var_1_61~0 (fp.mul c_currentRoundingMode ~var_1_43~0 ~var_1_21~0)))) is different from false [2023-12-23 02:53:53,498 WARN L293 SmtUtils]: Spent 7.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:54:04,978 WARN L293 SmtUtils]: Spent 6.51s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:54:13,273 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:54:20,239 WARN L293 SmtUtils]: Spent 6.77s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:54:31,497 WARN L293 SmtUtils]: Spent 6.74s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:54:38,030 WARN L293 SmtUtils]: Spent 6.34s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:54:45,905 WARN L293 SmtUtils]: Spent 7.69s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:54:55,297 WARN L293 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:55:01,340 WARN L293 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:56:04,296 WARN L293 SmtUtils]: Spent 21.29s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 02:56:11,023 WARN L293 SmtUtils]: Spent 6.68s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:57:36,960 WARN L293 SmtUtils]: Spent 43.93s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 02:57:45,809 WARN L854 $PredicateComparison]: unable to prove that (and (not (bvule (bvurem ((_ zero_extend 24) c_~var_1_13~0) (_ bv261 32)) c_~var_1_16~0)) (= c_~last_1_var_1_14~0 (_ bv0 8)) (bvsle ((_ zero_extend 24) c_~var_1_5~0) (_ bv0 32)) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse0 ((_ to_fp 8 24) c_currentRoundingMode 9223372036854765600.0))) (or (and (fp.geq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode (fp.neg .cse0))) (fp.leq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode (fp.neg .cse1)))) (and (fp.geq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode .cse1)) (fp.leq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode .cse0))))) (exists ((~var_1_61~0 (_ FloatingPoint 11 53)) (~var_1_21~0 (_ FloatingPoint 11 53)) (~var_1_43~0 (_ FloatingPoint 11 53))) (fp.eq ~var_1_61~0 (fp.mul c_currentRoundingMode ~var_1_43~0 ~var_1_21~0))) (= ((_ zero_extend 24) c_~last_1_var_1_12~0) c_~var_1_16~0) (= c_~var_1_12~0 c_~var_1_13~0)) is different from false [2023-12-23 02:57:52,400 WARN L293 SmtUtils]: Spent 6.51s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:58:01,606 WARN L854 $PredicateComparison]: unable to prove that (and (not (bvule (bvurem ((_ zero_extend 24) c_~var_1_13~0) (_ bv261 32)) c_~var_1_16~0)) (= c_~last_1_var_1_14~0 (_ bv0 8)) (bvsle ((_ zero_extend 24) c_~var_1_5~0) (_ bv0 32)) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse0 ((_ to_fp 8 24) c_currentRoundingMode 9223372036854765600.0))) (or (and (fp.geq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode (fp.neg .cse0))) (fp.leq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode (fp.neg .cse1)))) (and (fp.geq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode .cse1)) (fp.leq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode .cse0))))) (exists ((~var_1_61~0 (_ FloatingPoint 11 53)) (~var_1_21~0 (_ FloatingPoint 11 53)) (~var_1_43~0 (_ FloatingPoint 11 53))) (fp.eq ~var_1_61~0 (fp.mul c_currentRoundingMode ~var_1_43~0 ~var_1_21~0))) (= ((_ zero_extend 24) c_~last_1_var_1_12~0) c_~var_1_16~0) (= c_~var_1_12~0 c_~var_1_13~0) (= (_ bv1 8) c_~var_1_1~0)) is different from false [2023-12-23 02:58:08,614 WARN L293 SmtUtils]: Spent 6.94s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:58:16,125 WARN L293 SmtUtils]: Spent 7.14s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:58:24,605 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 03:00:19,922 WARN L293 SmtUtils]: Spent 1.12m on a formula simplification that was a NOOP. DAG size: 51 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 03:00:25,846 WARN L293 SmtUtils]: Spent 5.88s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 03:00:31,467 WARN L854 $PredicateComparison]: unable to prove that (and (not (bvule (bvurem ((_ zero_extend 24) c_~var_1_13~0) (_ bv261 32)) c_~var_1_16~0)) (= c_~last_1_var_1_14~0 (_ bv0 8)) (bvsle ((_ zero_extend 24) c_~var_1_5~0) (_ bv0 32)) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse0 ((_ to_fp 8 24) c_currentRoundingMode 9223372036854765600.0))) (or (and (fp.geq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode (fp.neg .cse0))) (fp.leq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode (fp.neg .cse1)))) (and (fp.geq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode .cse1)) (fp.leq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode .cse0))))) (exists ((~var_1_61~0 (_ FloatingPoint 11 53)) (~var_1_21~0 (_ FloatingPoint 11 53)) (~var_1_43~0 (_ FloatingPoint 11 53))) (fp.eq ~var_1_61~0 (fp.mul c_currentRoundingMode ~var_1_43~0 ~var_1_21~0))) (= ((_ zero_extend 24) c_~last_1_var_1_12~0) c_~var_1_16~0) (= c_~var_1_11~0 c_~var_1_10~0) (= c_~var_1_12~0 c_~var_1_13~0) (= (_ bv1 8) c_~var_1_1~0) (= c_~var_1_7~0 c_~var_1_6~0)) is different from false [2023-12-23 03:00:39,840 WARN L293 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 03:00:46,920 WARN L854 $PredicateComparison]: unable to prove that (and (not (bvule (bvurem ((_ zero_extend 24) c_~var_1_13~0) (_ bv261 32)) c_~var_1_16~0)) (= c_~last_1_var_1_14~0 (_ bv0 8)) (bvsle ((_ zero_extend 24) c_~var_1_5~0) (_ bv0 32)) (= c_~var_1_15~0 ((_ to_fp 8 24) c_currentRoundingMode c_~var_1_10~0)) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse0 ((_ to_fp 8 24) c_currentRoundingMode 9223372036854765600.0))) (or (and (fp.geq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode (fp.neg .cse0))) (fp.leq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode (fp.neg .cse1)))) (and (fp.geq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode .cse1)) (fp.leq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode .cse0))))) (exists ((~var_1_61~0 (_ FloatingPoint 11 53)) (~var_1_21~0 (_ FloatingPoint 11 53)) (~var_1_43~0 (_ FloatingPoint 11 53))) (fp.eq ~var_1_61~0 (fp.mul c_currentRoundingMode ~var_1_43~0 ~var_1_21~0))) (= ((_ zero_extend 24) c_~last_1_var_1_12~0) c_~var_1_16~0) (= c_~var_1_11~0 c_~var_1_10~0) (= c_~var_1_12~0 c_~var_1_13~0) (= (_ bv1 8) c_~var_1_1~0) (= c_~var_1_7~0 c_~var_1_6~0)) is different from false [2023-12-23 03:00:55,417 WARN L293 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 03:01:03,294 WARN L854 $PredicateComparison]: unable to prove that (and (not (bvule (bvurem ((_ zero_extend 24) c_~var_1_13~0) (_ bv261 32)) c_~var_1_16~0)) (= c_~last_1_var_1_14~0 (_ bv0 8)) (= c_~var_1_9~0 c_~var_1_10~0) (bvsle ((_ zero_extend 24) c_~var_1_5~0) (_ bv0 32)) (= c_~var_1_15~0 ((_ to_fp 8 24) c_currentRoundingMode c_~var_1_10~0)) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse0 ((_ to_fp 8 24) c_currentRoundingMode 9223372036854765600.0))) (or (and (fp.geq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode (fp.neg .cse0))) (fp.leq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode (fp.neg .cse1)))) (and (fp.geq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode .cse1)) (fp.leq c_~var_1_10~0 ((_ to_fp 11 53) c_currentRoundingMode .cse0))))) (bvsle ((_ zero_extend 24) c_~var_1_12~0) (bvmul ((_ zero_extend 24) c_~var_1_8~0) (_ bv50 32))) (exists ((~var_1_61~0 (_ FloatingPoint 11 53)) (~var_1_21~0 (_ FloatingPoint 11 53)) (~var_1_43~0 (_ FloatingPoint 11 53))) (fp.eq ~var_1_61~0 (fp.mul c_currentRoundingMode ~var_1_43~0 ~var_1_21~0))) (= ((_ zero_extend 24) c_~last_1_var_1_12~0) c_~var_1_16~0) (= c_~var_1_11~0 c_~var_1_10~0) (= c_~var_1_12~0 c_~var_1_13~0) (= (_ bv1 8) c_~var_1_1~0) (= c_~var_1_7~0 c_~var_1_6~0)) is different from false Received shutdown request... [2023-12-23 03:01:21,978 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 [2023-12-23 03:01:21,978 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 03:01:21,978 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 03:01:23,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-12-23 03:01:23,108 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 [2023-12-23 03:01:23,196 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-23 03:01:23,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown