/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-23.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 12:52:04,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 12:52:04,158 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 12:52:04,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 12:52:04,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 12:52:04,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 12:52:04,187 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 12:52:04,188 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 12:52:04,188 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 12:52:04,191 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 12:52:04,191 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 12:52:04,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 12:52:04,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 12:52:04,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 12:52:04,193 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 12:52:04,193 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 12:52:04,193 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 12:52:04,193 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 12:52:04,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 12:52:04,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 12:52:04,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 12:52:04,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 12:52:04,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 12:52:04,195 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 12:52:04,195 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 12:52:04,195 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 12:52:04,195 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 12:52:04,196 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 12:52:04,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 12:52:04,196 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 12:52:04,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 12:52:04,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 12:52:04,197 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 12:52:04,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 12:52:04,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 12:52:04,197 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 12:52:04,197 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 12:52:04,197 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 12:52:04,197 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 12:52:04,198 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 12:52:04,198 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 12:52:04,198 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 12:52:04,198 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 12:52:04,198 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 12:52:04,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 12:52:04,198 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 12:52:04,198 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 12:52:04,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 12:52:04,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 12:52:04,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 12:52:04,403 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 12:52:04,404 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 12:52:04,405 INFO L431 ainManager$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-23.i [2023-12-23 12:52:05,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 12:52:05,556 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 12:52:05,557 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-23.i [2023-12-23 12:52:05,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcdf427f4/6f5d2039a86e4c42ac5d32b6e2e3081c/FLAG5c667e964 [2023-12-23 12:52:05,580 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcdf427f4/6f5d2039a86e4c42ac5d32b6e2e3081c [2023-12-23 12:52:05,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 12:52:05,583 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 12:52:05,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 12:52:05,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 12:52:05,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 12:52:05,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fd4922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05, skipping insertion in model container [2023-12-23 12:52:05,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,621 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 12:52:05,718 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-23.i[919,932] [2023-12-23 12:52:05,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 12:52:05,771 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 12:52:05,788 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-23.i[919,932] [2023-12-23 12:52:05,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 12:52:05,827 INFO L206 MainTranslator]: Completed translation [2023-12-23 12:52:05,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05 WrapperNode [2023-12-23 12:52:05,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 12:52:05,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 12:52:05,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 12:52:05,829 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 12:52:05,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,847 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,869 INFO L138 Inliner]: procedures = 27, calls = 52, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 232 [2023-12-23 12:52:05,870 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 12:52:05,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 12:52:05,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 12:52:05,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 12:52:05,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,883 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,905 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 12:52:05,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,930 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,931 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,934 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 12:52:05,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 12:52:05,935 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 12:52:05,935 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 12:52:05,936 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05" (1/1) ... [2023-12-23 12:52:05,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 12:52:05,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 12:52:06,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-23 12:52:06,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-23 12:52:06,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 12:52:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 12:52:06,028 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 12:52:06,029 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 12:52:06,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 12:52:06,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 12:52:06,122 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 12:52:06,124 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 12:52:16,376 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 12:52:16,407 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 12:52:16,408 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 12:52:16,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:52:16 BoogieIcfgContainer [2023-12-23 12:52:16,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 12:52:16,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 12:52:16,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 12:52:16,411 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 12:52:16,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 12:52:05" (1/3) ... [2023-12-23 12:52:16,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e240f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:52:16, skipping insertion in model container [2023-12-23 12:52:16,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:52:05" (2/3) ... [2023-12-23 12:52:16,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e240f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:52:16, skipping insertion in model container [2023-12-23 12:52:16,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:52:16" (3/3) ... [2023-12-23 12:52:16,419 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-23.i [2023-12-23 12:52:16,430 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 12:52:16,430 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 12:52:16,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 12:52:16,473 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;@371d7bd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 12:52:16,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 12:52:16,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 58 states have internal predecessors, (82), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-23 12:52:16,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-23 12:52:16,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:52:16,488 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 12:52:16,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:52:16,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:52:16,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1311072574, now seen corresponding path program 1 times [2023-12-23 12:52:16,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:52:16,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51943791] [2023-12-23 12:52:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:52:16,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 12:52:16,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:52:16,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 12:52:16,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 12:52:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:52:17,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 12:52:17,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:52:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1036 proven. 0 refuted. 0 times theorem prover too weak. 1928 trivial. 0 not checked. [2023-12-23 12:52:17,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 12:52:17,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:52:17,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51943791] [2023-12-23 12:52:17,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51943791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 12:52:17,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 12:52:17,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 12:52:17,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387354117] [2023-12-23 12:52:17,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 12:52:17,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 12:52:17,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:52:17,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 12:52:17,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 12:52:17,623 INFO L87 Difference]: Start difference. First operand has 99 states, 57 states have (on average 1.4385964912280702) internal successors, (82), 58 states have internal predecessors, (82), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-23 12:52:18,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:52:18,670 INFO L93 Difference]: Finished difference Result 195 states and 357 transitions. [2023-12-23 12:52:18,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 12:52:18,703 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 238 [2023-12-23 12:52:18,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:52:18,708 INFO L225 Difference]: With dead ends: 195 [2023-12-23 12:52:18,708 INFO L226 Difference]: Without dead ends: 97 [2023-12-23 12:52:18,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 12:52:18,713 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-23 12:52:18,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-23 12:52:18,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-23 12:52:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-12-23 12:52:18,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 56 states have internal predecessors, (76), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-23 12:52:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 154 transitions. [2023-12-23 12:52:18,746 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 154 transitions. Word has length 238 [2023-12-23 12:52:18,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:52:18,747 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 154 transitions. [2023-12-23 12:52:18,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-23 12:52:18,747 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 154 transitions. [2023-12-23 12:52:18,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-23 12:52:18,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:52:18,751 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 12:52:18,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 12:52:18,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 12:52:18,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:52:18,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:52:18,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1914426960, now seen corresponding path program 1 times [2023-12-23 12:52:18,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:52:18,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013381184] [2023-12-23 12:52:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:52:18,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 12:52:18,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:52:18,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 12:52:18,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 12:52:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:52:19,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 12:52:19,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:52:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-23 12:52:25,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 12:52:25,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:52:25,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013381184] [2023-12-23 12:52:25,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013381184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 12:52:25,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 12:52:25,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 12:52:25,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502353202] [2023-12-23 12:52:25,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 12:52:25,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 12:52:25,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:52:25,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 12:52:25,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 12:52:25,416 INFO L87 Difference]: Start difference. First operand 97 states and 154 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-23 12:52:31,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:52:37,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 12:52:38,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:52:38,444 INFO L93 Difference]: Finished difference Result 268 states and 426 transitions. [2023-12-23 12:52:38,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 12:52:38,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 238 [2023-12-23 12:52:38,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:52:38,448 INFO L225 Difference]: With dead ends: 268 [2023-12-23 12:52:38,448 INFO L226 Difference]: Without dead ends: 172 [2023-12-23 12:52:38,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 12:52:38,450 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 12 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2023-12-23 12:52:38,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 269 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 2 Unknown, 0 Unchecked, 13.0s Time] [2023-12-23 12:52:38,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-23 12:52:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 165. [2023-12-23 12:52:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 84 states have (on average 1.25) internal successors, (105), 84 states have internal predecessors, (105), 78 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-23 12:52:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 261 transitions. [2023-12-23 12:52:38,471 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 261 transitions. Word has length 238 [2023-12-23 12:52:38,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:52:38,472 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 261 transitions. [2023-12-23 12:52:38,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-23 12:52:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 261 transitions. [2023-12-23 12:52:38,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-12-23 12:52:38,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:52:38,475 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 12:52:38,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-23 12:52:38,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 12:52:38,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:52:38,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:52:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash 628808280, now seen corresponding path program 1 times [2023-12-23 12:52:38,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:52:38,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690820400] [2023-12-23 12:52:38,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:52:38,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 12:52:38,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:52:38,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 12:52:38,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 12:52:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:52:39,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 12:52:39,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:52:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 464 proven. 105 refuted. 0 times theorem prover too weak. 2395 trivial. 0 not checked. [2023-12-23 12:52:44,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 12:52:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 9 proven. 105 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2023-12-23 12:52:46,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 12:52:46,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690820400] [2023-12-23 12:52:46,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690820400] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 12:52:46,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 12:52:46,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 12:52:46,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129656304] [2023-12-23 12:52:46,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 12:52:46,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 12:52:46,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 12:52:46,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 12:52:46,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 12:52:46,582 INFO L87 Difference]: Start difference. First operand 165 states and 261 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2023-12-23 12:52:50,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 12:52:50,769 INFO L93 Difference]: Finished difference Result 275 states and 424 transitions. [2023-12-23 12:52:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-23 12:52:50,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 240 [2023-12-23 12:52:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 12:52:50,803 INFO L225 Difference]: With dead ends: 275 [2023-12-23 12:52:50,803 INFO L226 Difference]: Without dead ends: 179 [2023-12-23 12:52:50,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 472 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-12-23 12:52:50,804 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 160 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-23 12:52:50,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 203 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-23 12:52:50,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-23 12:52:50,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 171. [2023-12-23 12:52:50,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 88 states have internal predecessors, (103), 78 states have call successors, (78), 4 states have call predecessors, (78), 4 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-23 12:52:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 259 transitions. [2023-12-23 12:52:50,822 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 259 transitions. Word has length 240 [2023-12-23 12:52:50,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 12:52:50,822 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 259 transitions. [2023-12-23 12:52:50,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (74), 2 states have call predecessors, (74), 4 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2023-12-23 12:52:50,823 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 259 transitions. [2023-12-23 12:52:50,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-12-23 12:52:50,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 12:52:50,829 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 12:52:50,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 12:52:51,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 12:52:51,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 12:52:51,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 12:52:51,055 INFO L85 PathProgramCache]: Analyzing trace with hash 42002266, now seen corresponding path program 1 times [2023-12-23 12:52:51,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 12:52:51,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146056384] [2023-12-23 12:52:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 12:52:51,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 12:52:51,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 12:52:51,057 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 12:52:51,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 12:52:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 12:52:52,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-23 12:52:52,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 12:55:11,954 WARN L293 SmtUtils]: Spent 5.34s on a formula simplification that was a NOOP. DAG size: 127 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)