/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-co_file-66.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 13:24:39,799 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 13:24:39,879 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 13:24:39,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 13:24:39,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 13:24:39,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 13:24:39,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 13:24:39,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 13:24:39,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 13:24:39,920 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 13:24:39,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 13:24:39,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 13:24:39,921 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 13:24:39,922 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 13:24:39,922 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 13:24:39,923 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 13:24:39,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 13:24:39,923 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 13:24:39,923 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 13:24:39,923 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 13:24:39,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 13:24:39,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 13:24:39,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 13:24:39,924 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 13:24:39,925 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 13:24:39,925 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 13:24:39,925 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 13:24:39,925 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 13:24:39,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 13:24:39,926 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 13:24:39,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 13:24:39,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 13:24:39,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 13:24:39,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 13:24:39,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 13:24:39,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 13:24:39,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 13:24:39,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 13:24:39,928 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 13:24:39,928 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 13:24:39,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 13:24:39,928 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 13:24:39,928 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 13:24:39,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 13:24:39,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 13:24:39,929 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 13:24:39,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 13:24:40,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 13:24:40,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 13:24:40,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 13:24:40,201 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 13:24:40,202 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 13:24:40,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-66.i [2023-12-23 13:24:41,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 13:24:41,616 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 13:24:41,617 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-66.i [2023-12-23 13:24:41,629 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6644a5c/9def61ef1f484d8b8d73529790ef04f3/FLAG4625ae12b [2023-12-23 13:24:41,645 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6644a5c/9def61ef1f484d8b8d73529790ef04f3 [2023-12-23 13:24:41,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 13:24:41,649 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 13:24:41,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 13:24:41,652 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 13:24:41,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 13:24:41,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:24:41" (1/1) ... [2023-12-23 13:24:41,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267023cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:41, skipping insertion in model container [2023-12-23 13:24:41,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:24:41" (1/1) ... [2023-12-23 13:24:41,697 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 13:24:41,857 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-co_file-66.i[919,932] [2023-12-23 13:24:41,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 13:24:41,960 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 13:24:41,978 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-co_file-66.i[919,932] [2023-12-23 13:24:42,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 13:24:42,053 INFO L206 MainTranslator]: Completed translation [2023-12-23 13:24:42,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42 WrapperNode [2023-12-23 13:24:42,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 13:24:42,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 13:24:42,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 13:24:42,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 13:24:42,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42" (1/1) ... [2023-12-23 13:24:42,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42" (1/1) ... [2023-12-23 13:24:42,123 INFO L138 Inliner]: procedures = 27, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 179 [2023-12-23 13:24:42,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 13:24:42,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 13:24:42,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 13:24:42,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 13:24:42,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42" (1/1) ... [2023-12-23 13:24:42,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42" (1/1) ... [2023-12-23 13:24:42,136 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42" (1/1) ... [2023-12-23 13:24:42,149 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 13:24:42,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42" (1/1) ... [2023-12-23 13:24:42,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42" (1/1) ... [2023-12-23 13:24:42,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42" (1/1) ... [2023-12-23 13:24:42,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42" (1/1) ... [2023-12-23 13:24:42,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42" (1/1) ... [2023-12-23 13:24:42,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42" (1/1) ... [2023-12-23 13:24:42,176 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 13:24:42,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 13:24:42,177 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 13:24:42,177 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 13:24:42,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42" (1/1) ... [2023-12-23 13:24:42,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 13:24:42,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 13:24:42,214 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 13:24:42,240 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 13:24:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 13:24:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 13:24:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 13:24:42,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 13:24:42,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 13:24:42,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 13:24:42,390 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 13:24:42,392 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 13:24:42,806 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 13:24:42,864 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 13:24:42,865 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 13:24:42,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:24:42 BoogieIcfgContainer [2023-12-23 13:24:42,865 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 13:24:42,867 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 13:24:42,867 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 13:24:42,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 13:24:42,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:24:41" (1/3) ... [2023-12-23 13:24:42,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3ddba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:24:42, skipping insertion in model container [2023-12-23 13:24:42,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:24:42" (2/3) ... [2023-12-23 13:24:42,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3ddba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:24:42, skipping insertion in model container [2023-12-23 13:24:42,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:24:42" (3/3) ... [2023-12-23 13:24:42,873 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-66.i [2023-12-23 13:24:42,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 13:24:42,889 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 13:24:42,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 13:24:42,933 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;@6a3b73b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 13:24:42,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 13:24:42,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 52 states have internal predecessors, (79), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-23 13:24:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-23 13:24:42,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:24:42,954 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:24:42,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:24:42,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:24:42,962 INFO L85 PathProgramCache]: Analyzing trace with hash -494360842, now seen corresponding path program 1 times [2023-12-23 13:24:42,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:24:42,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273494270] [2023-12-23 13:24:42,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:24:42,975 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 13:24:42,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:24:42,977 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 13:24:42,980 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 13:24:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:24:43,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 13:24:43,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:24:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2023-12-23 13:24:43,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 13:24:43,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:24:43,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273494270] [2023-12-23 13:24:43,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273494270] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 13:24:43,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 13:24:43,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 13:24:43,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531427909] [2023-12-23 13:24:43,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 13:24:43,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 13:24:43,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:24:43,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 13:24:43,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 13:24:43,318 INFO L87 Difference]: Start difference. First operand has 78 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 52 states have internal predecessors, (79), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-23 13:24:43,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:24:43,403 INFO L93 Difference]: Finished difference Result 151 states and 272 transitions. [2023-12-23 13:24:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 13:24:43,413 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2023-12-23 13:24:43,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:24:43,421 INFO L225 Difference]: With dead ends: 151 [2023-12-23 13:24:43,421 INFO L226 Difference]: Without dead ends: 74 [2023-12-23 13:24:43,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 155 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 13:24:43,428 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 13:24:43,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 13:24:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-12-23 13:24:43,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-12-23 13:24:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-23 13:24:43,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 117 transitions. [2023-12-23 13:24:43,478 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 117 transitions. Word has length 156 [2023-12-23 13:24:43,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:24:43,478 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 117 transitions. [2023-12-23 13:24:43,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-12-23 13:24:43,479 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 117 transitions. [2023-12-23 13:24:43,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-23 13:24:43,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:24:43,487 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:24:43,493 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 (2)] Ended with exit code 0 [2023-12-23 13:24:43,687 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 13:24:43,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:24:43,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:24:43,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1477293382, now seen corresponding path program 1 times [2023-12-23 13:24:43,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:24:43,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257716702] [2023-12-23 13:24:43,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:24:43,691 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 13:24:43,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:24:43,693 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 13:24:43,694 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 13:24:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:24:43,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 13:24:43,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:24:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-23 13:24:44,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 13:24:44,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:24:44,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257716702] [2023-12-23 13:24:44,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257716702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 13:24:44,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 13:24:44,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 13:24:44,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858724183] [2023-12-23 13:24:44,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 13:24:44,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 13:24:44,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:24:44,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 13:24:44,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-23 13:24:44,288 INFO L87 Difference]: Start difference. First operand 74 states and 117 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-23 13:24:59,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 13:25:01,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 13:25:06,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 13:25:08,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 13:25:09,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:25:09,936 INFO L93 Difference]: Finished difference Result 290 states and 459 transitions. [2023-12-23 13:25:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 13:25:09,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 156 [2023-12-23 13:25:09,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:25:09,941 INFO L225 Difference]: With dead ends: 290 [2023-12-23 13:25:09,941 INFO L226 Difference]: Without dead ends: 217 [2023-12-23 13:25:09,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-23 13:25:09,944 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 273 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2023-12-23 13:25:09,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 270 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 25.6s Time] [2023-12-23 13:25:09,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-23 13:25:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 82. [2023-12-23 13:25:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 56 states have internal predecessors, (83), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-23 13:25:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 131 transitions. [2023-12-23 13:25:09,964 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 131 transitions. Word has length 156 [2023-12-23 13:25:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:25:09,965 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 131 transitions. [2023-12-23 13:25:09,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-23 13:25:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 131 transitions. [2023-12-23 13:25:09,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-23 13:25:09,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:25:09,968 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:09,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 13:25:10,168 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 13:25:10,169 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:25:10,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:25:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1420035080, now seen corresponding path program 1 times [2023-12-23 13:25:10,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:25:10,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227506229] [2023-12-23 13:25:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:25:10,170 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 13:25:10,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:25:10,172 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 13:25:10,180 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 13:25:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:25:10,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-23 13:25:10,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:25:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 624 proven. 87 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-12-23 13:25:10,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:25:11,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:25:11,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227506229] [2023-12-23 13:25:11,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227506229] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:25:11,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [247527024] [2023-12-23 13:25:11,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:25:11,221 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 13:25:11,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 13:25:11,274 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 13:25:11,293 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 13:25:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:25:11,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-23 13:25:11,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:25:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 624 proven. 87 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-12-23 13:25:12,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:25:12,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [247527024] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:25:12,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 13:25:12,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2023-12-23 13:25:12,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44751340] [2023-12-23 13:25:12,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 13:25:12,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-23 13:25:12,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:25:12,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-23 13:25:12,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-23 13:25:12,403 INFO L87 Difference]: Start difference. First operand 82 states and 131 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-23 13:25:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:25:14,432 INFO L93 Difference]: Finished difference Result 363 states and 551 transitions. [2023-12-23 13:25:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-23 13:25:14,434 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2023-12-23 13:25:14,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:25:14,437 INFO L225 Difference]: With dead ends: 363 [2023-12-23 13:25:14,438 INFO L226 Difference]: Without dead ends: 277 [2023-12-23 13:25:14,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=375, Invalid=1185, Unknown=0, NotChecked=0, Total=1560 [2023-12-23 13:25:14,444 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 288 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-23 13:25:14,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 476 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-23 13:25:14,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-23 13:25:14,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 242. [2023-12-23 13:25:14,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 160 states have (on average 1.36875) internal successors, (219), 160 states have internal predecessors, (219), 72 states have call successors, (72), 9 states have call predecessors, (72), 9 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-23 13:25:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 363 transitions. [2023-12-23 13:25:14,491 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 363 transitions. Word has length 156 [2023-12-23 13:25:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:25:14,492 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 363 transitions. [2023-12-23 13:25:14,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 3 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-12-23 13:25:14,493 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 363 transitions. [2023-12-23 13:25:14,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-23 13:25:14,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:25:14,495 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:14,511 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 13:25:14,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-23 13:25:14,904 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 13:25:14,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:25:14,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:25:14,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2116609336, now seen corresponding path program 1 times [2023-12-23 13:25:14,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:25:14,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097435208] [2023-12-23 13:25:14,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:25:14,906 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 13:25:14,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:25:14,908 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 13:25:14,910 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 13:25:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:25:15,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 13:25:15,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:25:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 443 proven. 51 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2023-12-23 13:25:15,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:25:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-12-23 13:25:15,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:25:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097435208] [2023-12-23 13:25:15,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097435208] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-23 13:25:15,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 13:25:15,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-23 13:25:15,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178006879] [2023-12-23 13:25:15,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 13:25:15,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 13:25:15,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:25:15,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 13:25:15,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-23 13:25:15,421 INFO L87 Difference]: Start difference. First operand 242 states and 363 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-23 13:25:15,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:25:15,501 INFO L93 Difference]: Finished difference Result 420 states and 632 transitions. [2023-12-23 13:25:15,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 13:25:15,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 156 [2023-12-23 13:25:15,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:25:15,512 INFO L225 Difference]: With dead ends: 420 [2023-12-23 13:25:15,512 INFO L226 Difference]: Without dead ends: 174 [2023-12-23 13:25:15,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 303 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-23 13:25:15,514 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 109 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 13:25:15,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 107 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 13:25:15,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-23 13:25:15,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 158. [2023-12-23 13:25:15,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 103 states have (on average 1.3203883495145632) internal successors, (136), 103 states have internal predecessors, (136), 48 states have call successors, (48), 6 states have call predecessors, (48), 6 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-23 13:25:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 232 transitions. [2023-12-23 13:25:15,541 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 232 transitions. Word has length 156 [2023-12-23 13:25:15,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:25:15,542 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 232 transitions. [2023-12-23 13:25:15,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2023-12-23 13:25:15,543 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 232 transitions. [2023-12-23 13:25:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-23 13:25:15,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:25:15,545 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:15,557 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 13:25:15,751 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 13:25:15,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:25:15,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:25:15,752 INFO L85 PathProgramCache]: Analyzing trace with hash -309417408, now seen corresponding path program 1 times [2023-12-23 13:25:15,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:25:15,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538490711] [2023-12-23 13:25:15,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:25:15,753 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 13:25:15,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:25:15,754 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 13:25:15,755 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 13:25:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:25:15,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 13:25:15,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:25:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 569 proven. 30 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-12-23 13:25:16,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:25:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 39 proven. 30 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-12-23 13:25:16,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:25:16,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538490711] [2023-12-23 13:25:16,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538490711] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 13:25:16,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 13:25:16,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-23 13:25:16,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93417902] [2023-12-23 13:25:16,201 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 13:25:16,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 13:25:16,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:25:16,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 13:25:16,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-23 13:25:16,203 INFO L87 Difference]: Start difference. First operand 158 states and 232 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-23 13:25:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:25:16,585 INFO L93 Difference]: Finished difference Result 333 states and 477 transitions. [2023-12-23 13:25:16,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 13:25:16,594 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 157 [2023-12-23 13:25:16,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:25:16,595 INFO L225 Difference]: With dead ends: 333 [2023-12-23 13:25:16,595 INFO L226 Difference]: Without dead ends: 176 [2023-12-23 13:25:16,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2023-12-23 13:25:16,597 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 153 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-23 13:25:16,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 168 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-23 13:25:16,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-23 13:25:16,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 164. [2023-12-23 13:25:16,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 107 states have internal predecessors, (127), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-23 13:25:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 223 transitions. [2023-12-23 13:25:16,615 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 223 transitions. Word has length 157 [2023-12-23 13:25:16,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:25:16,615 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 223 transitions. [2023-12-23 13:25:16,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 2 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2023-12-23 13:25:16,616 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 223 transitions. [2023-12-23 13:25:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-23 13:25:16,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:25:16,617 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:25:16,629 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 13:25:16,824 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 13:25:16,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:25:16,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:25:16,825 INFO L85 PathProgramCache]: Analyzing trace with hash -989475778, now seen corresponding path program 1 times [2023-12-23 13:25:16,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:25:16,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687075389] [2023-12-23 13:25:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:25:16,826 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 13:25:16,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:25:16,827 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 13:25:16,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 13:25:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:25:16,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-23 13:25:16,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:25:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 616 proven. 132 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2023-12-23 13:25:19,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:25:25,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 13:25:25,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687075389] [2023-12-23 13:25:25,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687075389] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:25:25,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [557210510] [2023-12-23 13:25:25,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:25:25,580 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 13:25:25,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 13:25:25,581 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 13:25:25,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-23 13:25:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:25:26,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-23 13:25:26,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 13:25:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 598 proven. 126 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-12-23 13:25:34,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 13:25:44,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [557210510] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 13:25:44,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 13:25:44,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2023-12-23 13:25:44,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057704854] [2023-12-23 13:25:44,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 13:25:44,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-23 13:25:44,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 13:25:44,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-23 13:25:44,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=753, Unknown=1, NotChecked=0, Total=870 [2023-12-23 13:25:44,586 INFO L87 Difference]: Start difference. First operand 164 states and 223 transitions. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 7 states have call successors, (43), 7 states have call predecessors, (43), 12 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) [2023-12-23 13:25:55,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 13:26:05,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 13:26:05,441 INFO L93 Difference]: Finished difference Result 437 states and 560 transitions. [2023-12-23 13:26:05,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-23 13:26:05,442 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 7 states have call successors, (43), 7 states have call predecessors, (43), 12 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) Word has length 157 [2023-12-23 13:26:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 13:26:05,444 INFO L225 Difference]: With dead ends: 437 [2023-12-23 13:26:05,444 INFO L226 Difference]: Without dead ends: 274 [2023-12-23 13:26:05,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=607, Invalid=2472, Unknown=1, NotChecked=0, Total=3080 [2023-12-23 13:26:05,446 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 254 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-12-23 13:26:05,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 538 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2023-12-23 13:26:05,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-23 13:26:05,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 236. [2023-12-23 13:26:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 157 states have (on average 1.1401273885350318) internal successors, (179), 159 states have internal predecessors, (179), 60 states have call successors, (60), 18 states have call predecessors, (60), 18 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-23 13:26:05,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 299 transitions. [2023-12-23 13:26:05,474 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 299 transitions. Word has length 157 [2023-12-23 13:26:05,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 13:26:05,475 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 299 transitions. [2023-12-23 13:26:05,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 7 states have call successors, (43), 7 states have call predecessors, (43), 12 states have return successors, (44), 7 states have call predecessors, (44), 7 states have call successors, (44) [2023-12-23 13:26:05,475 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 299 transitions. [2023-12-23 13:26:05,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-23 13:26:05,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 13:26:05,477 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:26:05,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-23 13:26:05,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-23 13:26:05,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 13:26:05,886 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 13:26:05,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 13:26:05,887 INFO L85 PathProgramCache]: Analyzing trace with hash -989416196, now seen corresponding path program 1 times [2023-12-23 13:26:05,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 13:26:05,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651477599] [2023-12-23 13:26:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 13:26:05,888 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 13:26:05,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 13:26:05,889 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 13:26:05,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-23 13:26:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 13:26:06,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-23 13:26:06,130 INFO L285 TraceCheckSpWp]: Computing forward predicates...