/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-pe-co_file-44.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 09:41:34,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 09:41:34,796 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 09:41:34,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 09:41:34,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 09:41:34,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 09:41:34,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 09:41:34,817 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 09:41:34,818 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 09:41:34,818 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 09:41:34,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 09:41:34,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 09:41:34,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 09:41:34,819 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 09:41:34,819 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 09:41:34,819 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 09:41:34,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 09:41:34,820 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 09:41:34,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 09:41:34,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 09:41:34,820 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 09:41:34,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 09:41:34,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 09:41:34,821 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 09:41:34,821 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 09:41:34,822 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 09:41:34,822 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 09:41:34,822 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 09:41:34,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 09:41:34,822 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 09:41:34,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 09:41:34,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 09:41:34,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 09:41:34,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 09:41:34,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 09:41:34,833 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 09:41:34,833 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 09:41:34,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 09:41:34,833 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 09:41:34,833 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 09:41:34,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 09:41:34,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 09:41:34,834 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 09:41:34,834 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 09:41:34,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 09:41:34,834 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 09:41:34,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 09:41:35,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 09:41:35,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 09:41:35,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 09:41:35,028 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 09:41:35,028 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 09:41:35,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-44.i [2023-12-23 09:41:36,206 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 09:41:36,354 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 09:41:36,355 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-44.i [2023-12-23 09:41:36,374 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f577ef352/b29e8b756ff94065b578f827c78820a1/FLAG8882306f2 [2023-12-23 09:41:36,385 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f577ef352/b29e8b756ff94065b578f827c78820a1 [2023-12-23 09:41:36,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 09:41:36,388 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 09:41:36,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 09:41:36,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 09:41:36,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 09:41:36,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b61625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36, skipping insertion in model container [2023-12-23 09:41:36,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,438 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 09:41:36,570 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-44.i[919,932] [2023-12-23 09:41:36,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 09:41:36,667 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 09:41:36,691 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-pe-co_file-44.i[919,932] [2023-12-23 09:41:36,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 09:41:36,733 INFO L206 MainTranslator]: Completed translation [2023-12-23 09:41:36,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36 WrapperNode [2023-12-23 09:41:36,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 09:41:36,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 09:41:36,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 09:41:36,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 09:41:36,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,753 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,785 INFO L138 Inliner]: procedures = 27, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 215 [2023-12-23 09:41:36,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 09:41:36,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 09:41:36,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 09:41:36,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 09:41:36,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,802 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,824 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 09:41:36,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,860 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 09:41:36,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 09:41:36,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 09:41:36,861 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 09:41:36,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36" (1/1) ... [2023-12-23 09:41:36,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 09:41:36,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 09:41:36,910 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 09:41:36,936 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 09:41:36,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 09:41:36,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 09:41:36,958 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 09:41:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 09:41:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 09:41:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 09:41:37,075 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 09:41:37,077 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 09:41:41,673 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 09:41:41,726 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 09:41:41,726 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 09:41:41,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:41:41 BoogieIcfgContainer [2023-12-23 09:41:41,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 09:41:41,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 09:41:41,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 09:41:41,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 09:41:41,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:41:36" (1/3) ... [2023-12-23 09:41:41,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193722e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:41:41, skipping insertion in model container [2023-12-23 09:41:41,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:36" (2/3) ... [2023-12-23 09:41:41,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193722e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:41:41, skipping insertion in model container [2023-12-23 09:41:41,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:41:41" (3/3) ... [2023-12-23 09:41:41,740 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-44.i [2023-12-23 09:41:41,752 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 09:41:41,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 09:41:41,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 09:41:41,791 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;@75c9cb81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 09:41:41,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 09:41:41,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 50 states have (on average 1.46) internal successors, (73), 51 states have internal predecessors, (73), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 09:41:41,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-23 09:41:41,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:41:41,811 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:41:41,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:41:41,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:41:41,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2001687202, now seen corresponding path program 1 times [2023-12-23 09:41:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:41:41,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594448842] [2023-12-23 09:41:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:41:41,834 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 09:41:41,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:41:41,837 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 09:41:41,870 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 09:41:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:41:42,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 09:41:42,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:41:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1034 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2023-12-23 09:41:42,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 09:41:42,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:41:42,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594448842] [2023-12-23 09:41:42,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594448842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 09:41:42,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 09:41:42,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 09:41:42,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355177880] [2023-12-23 09:41:42,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 09:41:42,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 09:41:42,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:41:42,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 09:41:42,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 09:41:42,280 INFO L87 Difference]: Start difference. First operand has 87 states, 50 states have (on average 1.46) internal successors, (73), 51 states have internal predecessors, (73), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-23 09:41:43,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:41:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 09:41:43,807 INFO L93 Difference]: Finished difference Result 170 states and 312 transitions. [2023-12-23 09:41:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 09:41:43,839 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 209 [2023-12-23 09:41:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 09:41:43,844 INFO L225 Difference]: With dead ends: 170 [2023-12-23 09:41:43,844 INFO L226 Difference]: Without dead ends: 84 [2023-12-23 09:41:43,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 208 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 09:41:43,850 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-23 09:41:43,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-23 09:41:43,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-23 09:41:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-23 09:41:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 09:41:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 133 transitions. [2023-12-23 09:41:43,883 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 133 transitions. Word has length 209 [2023-12-23 09:41:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 09:41:43,884 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 133 transitions. [2023-12-23 09:41:43,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2023-12-23 09:41:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 133 transitions. [2023-12-23 09:41:43,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-23 09:41:43,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:41:43,891 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:41:43,904 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 09:41:44,102 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 09:41:44,102 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:41:44,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:41:44,103 INFO L85 PathProgramCache]: Analyzing trace with hash -305379554, now seen corresponding path program 1 times [2023-12-23 09:41:44,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:41:44,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213733512] [2023-12-23 09:41:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:41:44,104 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 09:41:44,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:41:44,107 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 09:41:44,144 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 09:41:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:41:44,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 09:41:44,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:41:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 453 proven. 9 refuted. 0 times theorem prover too weak. 1782 trivial. 0 not checked. [2023-12-23 09:41:44,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 09:41:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 90 proven. 9 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-12-23 09:41:44,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:41:44,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213733512] [2023-12-23 09:41:44,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213733512] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 09:41:44,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 09:41:44,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 09:41:44,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169762333] [2023-12-23 09:41:44,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 09:41:44,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 09:41:44,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 09:41:44,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 09:41:44,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 09:41:44,865 INFO L87 Difference]: Start difference. First operand 84 states and 133 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-23 09:41:46,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 09:41:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 09:41:47,016 INFO L93 Difference]: Finished difference Result 175 states and 272 transitions. [2023-12-23 09:41:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 09:41:47,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 209 [2023-12-23 09:41:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 09:41:47,049 INFO L225 Difference]: With dead ends: 175 [2023-12-23 09:41:47,050 INFO L226 Difference]: Without dead ends: 92 [2023-12-23 09:41:47,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 09:41:47,051 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 82 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-23 09:41:47,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 202 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-23 09:41:47,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-23 09:41:47,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2023-12-23 09:41:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 51 states have internal predecessors, (67), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-23 09:41:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 135 transitions. [2023-12-23 09:41:47,091 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 135 transitions. Word has length 209 [2023-12-23 09:41:47,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 09:41:47,094 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 135 transitions. [2023-12-23 09:41:47,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-23 09:41:47,095 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 135 transitions. [2023-12-23 09:41:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-23 09:41:47,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 09:41:47,103 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:41:47,117 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 09:41:47,312 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 09:41:47,313 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 09:41:47,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 09:41:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash -248121252, now seen corresponding path program 1 times [2023-12-23 09:41:47,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 09:41:47,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862843324] [2023-12-23 09:41:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:41:47,316 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 09:41:47,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 09:41:47,319 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 09:41:47,325 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 09:41:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:41:47,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-23 09:41:47,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:41:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1214 proven. 138 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2023-12-23 09:41:58,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 09:42:25,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 09:42:25,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862843324] [2023-12-23 09:42:25,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862843324] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 09:42:25,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1082829963] [2023-12-23 09:42:25,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 09:42:25,629 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 09:42:25,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 09:42:25,673 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 09:42:25,677 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 09:42:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 09:42:26,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-23 09:42:26,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 09:43:44,973 WARN L293 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 09:46:24,601 WARN L293 SmtUtils]: Spent 26.59s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)