/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-cn_file-56.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:53:29,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:53:29,178 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 11:53:29,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:53:29,182 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:53:29,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:53:29,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:53:29,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:53:29,205 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:53:29,208 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:53:29,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:53:29,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:53:29,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:53:29,210 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:53:29,211 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:53:29,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:53:29,211 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:53:29,211 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:53:29,211 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:53:29,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:53:29,212 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:53:29,212 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:53:29,212 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:53:29,213 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:53:29,213 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:53:29,213 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:53:29,213 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:53:29,213 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:53:29,213 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:53:29,213 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:53:29,214 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:53:29,214 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:53:29,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:53:29,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:53:29,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:53:29,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:53:29,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:53:29,215 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:53:29,215 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:53:29,216 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:53:29,216 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:53:29,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:53:29,216 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:53:29,216 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:53:29,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:53:29,217 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:53:29,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:53:29,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:53:29,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:53:29,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:53:29,428 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:53:29,429 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:53:29,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-56.i [2023-12-16 11:53:30,446 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:53:30,631 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:53:30,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-56.i [2023-12-16 11:53:30,639 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6246d4e9/dda9ce849c33437b88dee70ff947e55b/FLAGe48612620 [2023-12-16 11:53:30,650 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6246d4e9/dda9ce849c33437b88dee70ff947e55b [2023-12-16 11:53:30,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:53:30,654 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:53:30,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:53:30,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:53:30,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:53:30,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:30,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@762d401f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30, skipping insertion in model container [2023-12-16 11:53:30,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:30,687 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:53:30,777 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-cn_file-56.i[919,932] [2023-12-16 11:53:30,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:53:30,862 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:53:30,872 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-cn_file-56.i[919,932] [2023-12-16 11:53:30,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:53:30,919 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:53:30,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30 WrapperNode [2023-12-16 11:53:30,919 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:53:30,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:53:30,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:53:30,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:53:30,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:30,934 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:30,960 INFO L138 Inliner]: procedures = 27, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 263 [2023-12-16 11:53:30,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:53:30,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:53:30,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:53:30,961 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:53:30,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:30,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:30,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:30,988 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]. [2023-12-16 11:53:30,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:30,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:31,005 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:31,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:31,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:31,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:31,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:53:31,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:53:31,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:53:31,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:53:31,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30" (1/1) ... [2023-12-16 11:53:31,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:53:31,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:53:31,061 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) [2023-12-16 11:53:31,065 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 [2023-12-16 11:53:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:53:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:53:31,085 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:53:31,085 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:53:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:53:31,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:53:31,160 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:53:31,161 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:53:32,167 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:53:32,235 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:53:32,236 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:53:32,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:53:32 BoogieIcfgContainer [2023-12-16 11:53:32,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:53:32,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:53:32,238 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:53:32,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:53:32,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:53:30" (1/3) ... [2023-12-16 11:53:32,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678bee77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:53:32, skipping insertion in model container [2023-12-16 11:53:32,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:53:30" (2/3) ... [2023-12-16 11:53:32,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678bee77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:53:32, skipping insertion in model container [2023-12-16 11:53:32,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:53:32" (3/3) ... [2023-12-16 11:53:32,242 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-56.i [2023-12-16 11:53:32,254 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:53:32,255 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:53:32,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:53:32,304 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;@4cb76332, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:53:32,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:53:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 60 states have internal predecessors, (80), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-16 11:53:32,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-16 11:53:32,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:53:32,334 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:53:32,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:53:32,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:53:32,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2000048439, now seen corresponding path program 1 times [2023-12-16 11:53:32,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:53:32,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461177442] [2023-12-16 11:53:32,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:53:32,348 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 [2023-12-16 11:53:32,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:53:32,350 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) [2023-12-16 11:53:32,352 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 [2023-12-16 11:53:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:53:32,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 11:53:32,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:53:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 1086 proven. 285 refuted. 0 times theorem prover too weak. 4353 trivial. 0 not checked. [2023-12-16 11:53:33,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:53:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5724 backedges. 27 proven. 288 refuted. 0 times theorem prover too weak. 5409 trivial. 0 not checked. [2023-12-16 11:53:34,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:53:34,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461177442] [2023-12-16 11:53:34,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461177442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:53:34,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 11:53:34,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-16 11:53:34,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899172986] [2023-12-16 11:53:34,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 11:53:34,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 11:53:34,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:53:34,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 11:53:34,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-16 11:53:34,221 INFO L87 Difference]: Start difference. First operand has 116 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 60 states have internal predecessors, (80), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 3 states have call successors, (103), 3 states have call predecessors, (103), 7 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) [2023-12-16 11:53:35,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:53:35,022 INFO L93 Difference]: Finished difference Result 239 states and 439 transitions. [2023-12-16 11:53:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 11:53:35,029 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 3 states have call successors, (103), 3 states have call predecessors, (103), 7 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) Word has length 319 [2023-12-16 11:53:35,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:53:35,037 INFO L225 Difference]: With dead ends: 239 [2023-12-16 11:53:35,037 INFO L226 Difference]: Without dead ends: 124 [2023-12-16 11:53:35,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 626 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2023-12-16 11:53:35,043 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 209 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 11:53:35,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 373 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 11:53:35,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-16 11:53:35,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2023-12-16 11:53:35,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 64 states have (on average 1.234375) internal successors, (79), 64 states have internal predecessors, (79), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-16 11:53:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 187 transitions. [2023-12-16 11:53:35,089 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 187 transitions. Word has length 319 [2023-12-16 11:53:35,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:53:35,090 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 187 transitions. [2023-12-16 11:53:35,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 3 states have call successors, (103), 3 states have call predecessors, (103), 7 states have return successors, (104), 3 states have call predecessors, (104), 3 states have call successors, (104) [2023-12-16 11:53:35,091 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 187 transitions. [2023-12-16 11:53:35,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-16 11:53:35,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:53:35,095 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:53:35,109 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 [2023-12-16 11:53:35,306 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 [2023-12-16 11:53:35,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:53:35,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:53:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash 978980085, now seen corresponding path program 1 times [2023-12-16 11:53:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:53:35,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542438667] [2023-12-16 11:53:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:53:35,308 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 [2023-12-16 11:53:35,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:53:35,312 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) [2023-12-16 11:53:35,313 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 [2023-12-16 11:53:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:53:35,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 11:53:35,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 11:54:21,310 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:54:21,311 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:54:22,344 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 [2023-12-16 11:54:22,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown