/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-46.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 12:01:05,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 12:01:05,225 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 12:01:05,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 12:01:05,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 12:01:05,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 12:01:05,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 12:01:05,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 12:01:05,253 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 12:01:05,256 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 12:01:05,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 12:01:05,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 12:01:05,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 12:01:05,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 12:01:05,258 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 12:01:05,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 12:01:05,258 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 12:01:05,259 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 12:01:05,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 12:01:05,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 12:01:05,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 12:01:05,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 12:01:05,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 12:01:05,260 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 12:01:05,260 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 12:01:05,261 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 12:01:05,261 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 12:01:05,261 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 12:01:05,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 12:01:05,261 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 12:01:05,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 12:01:05,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 12:01:05,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 12:01:05,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 12:01:05,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 12:01:05,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 12:01:05,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 12:01:05,263 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 12:01:05,263 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 12:01:05,263 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 12:01:05,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 12:01:05,264 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 12:01:05,264 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 12:01:05,264 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 12:01:05,264 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 12:01:05,264 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 12:01:05,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 12:01:05,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 12:01:05,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 12:01:05,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 12:01:05,445 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 12:01:05,445 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 12:01:05,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-46.i [2023-12-23 12:01:06,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 12:01:06,653 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 12:01:06,654 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-46.i [2023-12-23 12:01:06,661 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329d60b5d/dd1e27e736f74bec9dcc809bed53178b/FLAG1ccb57349 [2023-12-23 12:01:06,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329d60b5d/dd1e27e736f74bec9dcc809bed53178b [2023-12-23 12:01:06,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 12:01:06,673 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 12:01:06,674 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 12:01:06,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 12:01:06,679 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 12:01:06,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:01:06" (1/1) ... [2023-12-23 12:01:06,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a380ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:06, skipping insertion in model container [2023-12-23 12:01:06,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:01:06" (1/1) ... [2023-12-23 12:01:06,718 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 12:01:06,850 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-46.i[919,932] [2023-12-23 12:01:06,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 12:01:06,942 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 12:01:06,958 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-46.i[919,932] [2023-12-23 12:01:06,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 12:01:07,008 INFO L206 MainTranslator]: Completed translation [2023-12-23 12:01:07,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07 WrapperNode [2023-12-23 12:01:07,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 12:01:07,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 12:01:07,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 12:01:07,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 12:01:07,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07" (1/1) ... [2023-12-23 12:01:07,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07" (1/1) ... [2023-12-23 12:01:07,060 INFO L138 Inliner]: procedures = 27, calls = 52, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 216 [2023-12-23 12:01:07,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 12:01:07,061 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 12:01:07,061 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 12:01:07,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 12:01:07,074 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07" (1/1) ... [2023-12-23 12:01:07,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07" (1/1) ... [2023-12-23 12:01:07,078 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07" (1/1) ... [2023-12-23 12:01:07,089 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 12:01:07,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07" (1/1) ... [2023-12-23 12:01:07,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07" (1/1) ... [2023-12-23 12:01:07,109 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07" (1/1) ... [2023-12-23 12:01:07,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07" (1/1) ... [2023-12-23 12:01:07,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07" (1/1) ... [2023-12-23 12:01:07,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07" (1/1) ... [2023-12-23 12:01:07,118 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 12:01:07,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 12:01:07,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 12:01:07,119 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 12:01:07,120 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07" (1/1) ... [2023-12-23 12:01:07,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 12:01:07,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 12:01:07,149 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 12:01:07,153 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 12:01:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 12:01:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 12:01:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 12:01:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 12:01:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 12:01:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 12:01:07,288 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 12:01:07,292 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 12:01:20,727 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 12:01:20,798 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 12:01:20,798 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 12:01:20,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:01:20 BoogieIcfgContainer [2023-12-23 12:01:20,798 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 12:01:20,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 12:01:20,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 12:01:20,805 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 12:01:20,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 12:01:06" (1/3) ... [2023-12-23 12:01:20,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18830f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:01:20, skipping insertion in model container [2023-12-23 12:01:20,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:01:07" (2/3) ... [2023-12-23 12:01:20,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18830f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:01:20, skipping insertion in model container [2023-12-23 12:01:20,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:01:20" (3/3) ... [2023-12-23 12:01:20,809 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-46.i [2023-12-23 12:01:20,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 12:01:20,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 12:01:20,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 12:01:20,869 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;@1b022033, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 12:01:20,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 12:01:20,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 50 states have (on average 1.44) internal successors, (72), 51 states have internal predecessors, (72), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-23 12:01:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-23 12:01:20,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:01:20,886 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:20,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:01:20,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:01:20,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2138068951, now seen corresponding path program 1 times [2023-12-23 12:01:20,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:01:20,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552792517] [2023-12-23 12:01:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:01:20,902 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 12:01:20,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:01:20,911 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 12:01:20,916 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 12:01:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:01:21,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 12:01:21,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:01:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1324 proven. 0 refuted. 0 times theorem prover too weak. 1640 trivial. 0 not checked. [2023-12-23 12:01:21,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 12:01:21,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:01:21,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552792517] [2023-12-23 12:01:21,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552792517] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 12:01:21,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 12:01:21,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 12:01:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001553225] [2023-12-23 12:01:21,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 12:01:21,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 12:01:21,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:01:21,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 12:01:21,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 12:01:21,930 INFO L87 Difference]: Start difference. First operand has 92 states, 50 states have (on average 1.44) internal successors, (72), 51 states have internal predecessors, (72), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-23 12:01:26,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:01:26,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:01:26,685 INFO L93 Difference]: Finished difference Result 180 states and 335 transitions. [2023-12-23 12:01:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 12:01:26,927 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 233 [2023-12-23 12:01:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:01:26,933 INFO L225 Difference]: With dead ends: 180 [2023-12-23 12:01:26,933 INFO L226 Difference]: Without dead ends: 89 [2023-12-23 12:01:26,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 12:01:26,940 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-23 12:01:26,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2023-12-23 12:01:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-23 12:01:26,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-12-23 12:01:26,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 48 states have (on average 1.3125) internal successors, (63), 48 states have internal predecessors, (63), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-23 12:01:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 141 transitions. [2023-12-23 12:01:26,993 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 141 transitions. Word has length 233 [2023-12-23 12:01:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:01:26,994 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 141 transitions. [2023-12-23 12:01:26,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-23 12:01:26,995 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 141 transitions. [2023-12-23 12:01:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-23 12:01:27,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:01:27,005 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:27,022 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 12:01:27,219 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 12:01:27,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:01:27,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:01:27,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1403997774, now seen corresponding path program 1 times [2023-12-23 12:01:27,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:01:27,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882234808] [2023-12-23 12:01:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:01:27,221 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 12:01:27,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:01:27,224 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 12:01:27,225 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 12:03:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:03:46,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 12:03:46,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:04:06,764 WARN L293 SmtUtils]: Spent 8.61s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:04:11,060 WARN L854 $PredicateComparison]: unable to prove that (exists ((~var_1_11~0 (_ FloatingPoint 8 24))) (fp.eq (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 255.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven ~var_1_11~0)) ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 4999998.0 5.0))))) is different from false [2023-12-23 12:04:15,232 WARN L876 $PredicateComparison]: unable to prove that (exists ((~var_1_11~0 (_ FloatingPoint 8 24))) (fp.eq (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 255.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven ~var_1_11~0)) ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 4999998.0 5.0))))) is different from true [2023-12-23 12:04:28,084 WARN L293 SmtUtils]: Spent 8.58s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:04:40,894 WARN L293 SmtUtils]: Spent 8.55s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:04:53,817 WARN L293 SmtUtils]: Spent 8.61s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:05:06,651 WARN L293 SmtUtils]: Spent 8.56s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:05:19,515 WARN L293 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:05:32,362 WARN L293 SmtUtils]: Spent 8.56s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:05:45,181 WARN L293 SmtUtils]: Spent 8.55s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:05:56,311 WARN L293 SmtUtils]: Spent 6.85s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:06:09,209 WARN L293 SmtUtils]: Spent 8.62s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:06:22,085 WARN L293 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:06:34,947 WARN L293 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:06:47,811 WARN L293 SmtUtils]: Spent 8.58s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:07:00,658 WARN L293 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:07:13,500 WARN L293 SmtUtils]: Spent 8.54s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:07:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-23 12:07:13,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 12:07:13,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:07:13,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882234808] [2023-12-23 12:07:13,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882234808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 12:07:13,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 12:07:13,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 12:07:13,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830949003] [2023-12-23 12:07:13,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 12:07:13,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 12:07:13,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:07:13,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 12:07:13,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=7, Unknown=2, NotChecked=4, Total=20 [2023-12-23 12:07:13,510 INFO L87 Difference]: Start difference. First operand 89 states and 141 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-23 12:07:18,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:07:23,219 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 255.0 2.0)))) (and (= c_~var_1_17~0 .cse0) (exists ((~var_1_11~0 (_ FloatingPoint 8 24))) (fp.eq (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 255.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven ~var_1_11~0)) ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 4999998.0 5.0))))) (= c_~last_1_var_1_17~0 .cse0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2023-12-23 12:07:27,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:07:33,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:07:37,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:07:41,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:07:45,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:07:49,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:07:54,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:07:58,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:08:03,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:08:07,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:08:07,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:08:07,266 INFO L93 Difference]: Finished difference Result 194 states and 306 transitions. [2023-12-23 12:08:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 12:08:07,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 234 [2023-12-23 12:08:07,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:08:07,552 INFO L225 Difference]: With dead ends: 194 [2023-12-23 12:08:07,552 INFO L226 Difference]: Without dead ends: 192 [2023-12-23 12:08:07,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2023-12-23 12:08:07,553 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 75 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 79 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 359 IncrementalHoareTripleChecker+Unchecked, 49.0s IncrementalHoareTripleChecker+Time [2023-12-23 12:08:07,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 456 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 14 Invalid, 11 Unknown, 359 Unchecked, 49.0s Time] [2023-12-23 12:08:07,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-23 12:08:07,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 169. [2023-12-23 12:08:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 88 states have internal predecessors, (112), 78 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-23 12:08:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 268 transitions. [2023-12-23 12:08:07,604 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 268 transitions. Word has length 234 [2023-12-23 12:08:07,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:08:07,605 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 268 transitions. [2023-12-23 12:08:07,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-23 12:08:07,606 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 268 transitions. [2023-12-23 12:08:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-23 12:08:07,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:08:07,608 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:08:07,632 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 (3)] Ended with exit code 0 [2023-12-23 12:08:07,832 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 12:08:07,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:08:07,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:08:07,833 INFO L85 PathProgramCache]: Analyzing trace with hash 371009588, now seen corresponding path program 1 times [2023-12-23 12:08:07,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:08:07,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19651910] [2023-12-23 12:08:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:08:07,834 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 12:08:07,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:08:07,835 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 12:08:07,836 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 12:08:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:08:08,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 12:08:08,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:08:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 870 proven. 18 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2023-12-23 12:08:12,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 12:08:13,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:08:13,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19651910] [2023-12-23 12:08:13,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19651910] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 12:08:13,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1674123234] [2023-12-23 12:08:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:08:13,792 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 12:08:13,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 12:08:13,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 12:08:13,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-23 12:08:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:08:15,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 12:08:15,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:08:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 870 proven. 18 refuted. 0 times theorem prover too weak. 2076 trivial. 0 not checked. [2023-12-23 12:08:19,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 12:08:20,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1674123234] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 12:08:20,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 12:08:20,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-23 12:08:20,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86929083] [2023-12-23 12:08:20,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 12:08:20,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 12:08:20,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:08:20,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 12:08:20,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-23 12:08:20,133 INFO L87 Difference]: Start difference. First operand 169 states and 268 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-23 12:08:27,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:08:31,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:08:35,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:08:39,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:08:43,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:08:47,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:08:49,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:08:50,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:08:50,398 INFO L93 Difference]: Finished difference Result 361 states and 562 transitions. [2023-12-23 12:08:50,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 12:08:50,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 234 [2023-12-23 12:08:50,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:08:50,401 INFO L225 Difference]: With dead ends: 361 [2023-12-23 12:08:50,402 INFO L226 Difference]: Without dead ends: 273 [2023-12-23 12:08:50,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 564 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-12-23 12:08:50,405 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 80 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 9 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2023-12-23 12:08:50,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 455 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 231 Invalid, 6 Unknown, 0 Unchecked, 29.9s Time] [2023-12-23 12:08:50,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-23 12:08:50,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 262. [2023-12-23 12:08:50,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 139 states have (on average 1.2589928057553956) internal successors, (175), 139 states have internal predecessors, (175), 117 states have call successors, (117), 5 states have call predecessors, (117), 5 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-23 12:08:50,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 409 transitions. [2023-12-23 12:08:50,431 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 409 transitions. Word has length 234 [2023-12-23 12:08:50,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:08:50,432 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 409 transitions. [2023-12-23 12:08:50,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-23 12:08:50,432 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 409 transitions. [2023-12-23 12:08:50,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-23 12:08:50,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:08:50,434 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:08:50,462 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 12:08:50,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-23 12:08:50,858 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 12:08:50,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:08:50,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:08:50,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1836322126, now seen corresponding path program 1 times [2023-12-23 12:08:50,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:08:50,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941143048] [2023-12-23 12:08:50,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:08:50,860 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 12:08:50,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:08:50,861 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 12:08:50,862 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 12:08:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:08:51,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 12:08:51,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:08:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-23 12:08:54,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 12:08:54,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:08:54,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941143048] [2023-12-23 12:08:54,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941143048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 12:08:54,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 12:08:54,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 12:08:54,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591188754] [2023-12-23 12:08:54,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 12:08:54,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 12:08:54,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:08:54,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 12:08:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 12:08:54,968 INFO L87 Difference]: Start difference. First operand 262 states and 409 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-23 12:08:59,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:09:03,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:09:07,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:09:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:09:08,164 INFO L93 Difference]: Finished difference Result 616 states and 967 transitions. [2023-12-23 12:09:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 12:09:08,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 234 [2023-12-23 12:09:08,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:09:08,168 INFO L225 Difference]: With dead ends: 616 [2023-12-23 12:09:08,168 INFO L226 Difference]: Without dead ends: 439 [2023-12-23 12:09:08,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 232 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 12:09:08,169 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 25 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-12-23 12:09:08,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 272 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 3 Unknown, 0 Unchecked, 13.2s Time] [2023-12-23 12:09:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-12-23 12:09:08,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2023-12-23 12:09:08,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 233 states have (on average 1.2660944206008584) internal successors, (295), 233 states have internal predecessors, (295), 195 states have call successors, (195), 8 states have call predecessors, (195), 8 states have return successors, (195), 195 states have call predecessors, (195), 195 states have call successors, (195) [2023-12-23 12:09:08,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 685 transitions. [2023-12-23 12:09:08,201 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 685 transitions. Word has length 234 [2023-12-23 12:09:08,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:09:08,202 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 685 transitions. [2023-12-23 12:09:08,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-23 12:09:08,202 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 685 transitions. [2023-12-23 12:09:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-23 12:09:08,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:09:08,204 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:08,227 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 12:09:08,418 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 12:09:08,419 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:09:08,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:09:08,419 INFO L85 PathProgramCache]: Analyzing trace with hash -61314764, now seen corresponding path program 1 times [2023-12-23 12:09:08,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:09:08,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769659803] [2023-12-23 12:09:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:09:08,422 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 12:09:08,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:09:08,423 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 12:09:08,424 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 12:11:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:11:22,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 12:11:22,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:11:42,635 WARN L293 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:11:46,938 WARN L854 $PredicateComparison]: unable to prove that (exists ((~var_1_11~0 (_ FloatingPoint 8 24))) (fp.eq (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 255.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven ~var_1_11~0)) ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 4999998.0 5.0))))) is different from false [2023-12-23 12:11:51,124 WARN L876 $PredicateComparison]: unable to prove that (exists ((~var_1_11~0 (_ FloatingPoint 8 24))) (fp.eq (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 255.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven ~var_1_11~0)) ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 4999998.0 5.0))))) is different from true [2023-12-23 12:12:03,964 WARN L293 SmtUtils]: Spent 8.56s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:12:16,812 WARN L293 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:12:29,651 WARN L293 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:12:42,517 WARN L293 SmtUtils]: Spent 8.58s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:12:55,375 WARN L293 SmtUtils]: Spent 8.55s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:13:07,396 WARN L293 SmtUtils]: Spent 7.73s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:13:20,228 WARN L293 SmtUtils]: Spent 8.56s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:13:33,076 WARN L293 SmtUtils]: Spent 8.55s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:13:45,924 WARN L293 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:13:58,816 WARN L293 SmtUtils]: Spent 8.60s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:14:11,636 WARN L293 SmtUtils]: Spent 8.53s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:14:24,546 WARN L293 SmtUtils]: Spent 8.60s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:14:37,405 WARN L293 SmtUtils]: Spent 8.58s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:14:47,406 WARN L293 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 12:14:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-23 12:14:47,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 12:14:47,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:14:47,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769659803] [2023-12-23 12:14:47,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769659803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 12:14:47,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 12:14:47,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 12:14:47,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79849730] [2023-12-23 12:14:47,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 12:14:47,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 12:14:47,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:14:47,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 12:14:47,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=7, Unknown=2, NotChecked=4, Total=20 [2023-12-23 12:14:47,410 INFO L87 Difference]: Start difference. First operand 437 states and 685 transitions. Second operand has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-23 12:14:52,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:14:56,966 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 255.0 2.0)))) (and (= c_~var_1_17~0 .cse0) (exists ((~var_1_11~0 (_ FloatingPoint 8 24))) (fp.eq (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 255.0 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven ~var_1_11~0)) ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 4999998.0 5.0))))) (= c_~last_1_var_1_17~0 .cse0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2023-12-23 12:15:01,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.75s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:15:06,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:15:10,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:15:14,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:15:18,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:15:22,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:15:27,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:15:32,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:15:36,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:15:40,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:15:40,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:15:40,964 INFO L93 Difference]: Finished difference Result 495 states and 768 transitions. [2023-12-23 12:15:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-23 12:15:41,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 234 [2023-12-23 12:15:41,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:15:41,238 INFO L225 Difference]: With dead ends: 495 [2023-12-23 12:15:41,238 INFO L226 Difference]: Without dead ends: 493 [2023-12-23 12:15:41,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2023-12-23 12:15:41,239 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 74 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 79 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 354 IncrementalHoareTripleChecker+Unchecked, 48.9s IncrementalHoareTripleChecker+Time [2023-12-23 12:15:41,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 454 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 14 Invalid, 11 Unknown, 354 Unchecked, 48.9s Time] [2023-12-23 12:15:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-12-23 12:15:41,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 438. [2023-12-23 12:15:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 234 states have (on average 1.264957264957265) internal successors, (296), 234 states have internal predecessors, (296), 195 states have call successors, (195), 8 states have call predecessors, (195), 8 states have return successors, (195), 195 states have call predecessors, (195), 195 states have call successors, (195) [2023-12-23 12:15:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 686 transitions. [2023-12-23 12:15:41,274 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 686 transitions. Word has length 234 [2023-12-23 12:15:41,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:15:41,275 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 686 transitions. [2023-12-23 12:15:41,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-23 12:15:41,275 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 686 transitions. [2023-12-23 12:15:41,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-23 12:15:41,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:15:41,276 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:41,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-23 12:15:41,495 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 12:15:41,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:15:41,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:15:41,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1797024784, now seen corresponding path program 1 times [2023-12-23 12:15:41,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:15:41,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033854605] [2023-12-23 12:15:41,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:15:41,497 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 12:15:41,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:15:41,498 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 12:15:41,501 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 Received shutdown request... [2023-12-23 12:15:53,417 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 12:15:53,418 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 (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 12:15:54,618 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 12:15:54,628 WARN L435 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)] Forcibly destroying the process [2023-12-23 12:15:54,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-23 12:15:54,641 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 12:15:54,644 WARN L435 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)] Forcibly destroying the process [2023-12-23 12:15:54,644 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 12:15:54,644 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 235 with TraceHistMax 39,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1033854605] and IpTcStrategyModuleCvc4 [1910726699]. [2023-12-23 12:15:54,647 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-23 12:15:54,648 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 12:15:54,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 12:15:54 BoogieIcfgContainer [2023-12-23 12:15:54,651 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 12:15:54,651 INFO L158 Benchmark]: Toolchain (without parser) took 887978.14ms. Allocated memory is still 230.7MB. Free memory was 188.8MB in the beginning and 89.0MB in the end (delta: 99.8MB). Peak memory consumption was 101.2MB. Max. memory is 8.0GB. [2023-12-23 12:15:54,651 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 129.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 12:15:54,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.37ms. Allocated memory is still 230.7MB. Free memory was 188.3MB in the beginning and 172.0MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-23 12:15:54,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.86ms. Allocated memory is still 230.7MB. Free memory was 172.0MB in the beginning and 169.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-23 12:15:54,652 INFO L158 Benchmark]: Boogie Preprocessor took 57.43ms. Allocated memory is still 230.7MB. Free memory was 169.4MB in the beginning and 165.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-23 12:15:54,652 INFO L158 Benchmark]: RCFGBuilder took 13679.48ms. Allocated memory is still 230.7MB. Free memory was 165.2MB in the beginning and 134.8MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2023-12-23 12:15:54,653 INFO L158 Benchmark]: TraceAbstraction took 873847.94ms. Allocated memory is still 230.7MB. Free memory was 134.3MB in the beginning and 89.0MB in the end (delta: 45.3MB). Peak memory consumption was 46.7MB. Max. memory is 8.0GB. [2023-12-23 12:15:54,654 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 129.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 335.37ms. Allocated memory is still 230.7MB. Free memory was 188.3MB in the beginning and 172.0MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.86ms. Allocated memory is still 230.7MB. Free memory was 172.0MB in the beginning and 169.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 57.43ms. Allocated memory is still 230.7MB. Free memory was 169.4MB in the beginning and 165.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 13679.48ms. Allocated memory is still 230.7MB. Free memory was 165.2MB in the beginning and 134.8MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * TraceAbstraction took 873847.94ms. Allocated memory is still 230.7MB. Free memory was 134.3MB in the beginning and 89.0MB in the end (delta: 45.3MB). Peak memory consumption was 46.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 235 with TraceHistMax 39,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1033854605] and IpTcStrategyModuleCvc4 [1910726699]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 92 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 873.8s, OverallIterations: 6, TraceHistogramMax: 39, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 156.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 mSolverCounterUnknown, 285 SdHoareTripleChecker+Valid, 145.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 254 mSDsluCounter, 1775 SdHoareTripleChecker+Invalid, 143.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 713 IncrementalHoareTripleChecker+Unchecked, 1072 mSDsCounter, 167 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 273 IncrementalHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 167 mSolverCounterUnsat, 703 mSDtfsCounter, 273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1509 GetRequests, 1488 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 27.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=438occurred in iteration=5, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 91 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 277.1s SatisfiabilityAnalysisTime, 425.2s InterpolantComputationTime, 1403 NumberOfCodeBlocks, 1403 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1397 ConstructedInterpolants, 30 QuantifiedInterpolants, 7145 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2262 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 17748/17784 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown