/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_fillercodesize_ps-cn-250_file-36.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 02:19:59,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 02:19:59,816 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 02:19:59,822 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 02:19:59,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 02:19:59,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 02:19:59,852 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 02:19:59,852 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 02:19:59,853 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 02:19:59,856 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 02:19:59,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 02:19:59,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 02:19:59,857 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 02:19:59,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 02:19:59,859 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 02:19:59,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 02:19:59,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 02:19:59,860 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 02:19:59,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 02:19:59,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 02:19:59,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 02:19:59,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 02:19:59,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 02:19:59,862 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 02:19:59,862 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 02:19:59,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 02:19:59,863 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 02:19:59,863 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 02:19:59,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 02:19:59,863 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 02:19:59,864 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 02:19:59,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 02:19:59,865 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 02:19:59,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 02:19:59,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:19:59,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 02:19:59,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 02:19:59,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 02:19:59,866 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 02:19:59,866 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 02:19:59,866 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 02:19:59,866 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 02:19:59,866 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 02:19:59,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 02:19:59,867 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 02:19:59,867 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 02:19:59,867 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 02:20:00,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 02:20:00,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 02:20:00,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 02:20:00,112 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 02:20:00,112 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 02:20:00,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-36.i [2023-12-23 02:20:01,207 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 02:20:01,415 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 02:20:01,416 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-36.i [2023-12-23 02:20:01,426 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57b641b8/c196761c4cc84efb9a7c118a5b824eea/FLAG0cf3c00b6 [2023-12-23 02:20:01,437 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57b641b8/c196761c4cc84efb9a7c118a5b824eea [2023-12-23 02:20:01,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 02:20:01,440 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 02:20:01,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 02:20:01,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 02:20:01,445 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 02:20:01,446 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:01,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e0e9283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01, skipping insertion in model container [2023-12-23 02:20:01,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:01,498 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 02:20:01,650 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_fillercodesize_ps-cn-250_file-36.i[916,929] [2023-12-23 02:20:01,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:20:01,808 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 02:20:01,819 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_fillercodesize_ps-cn-250_file-36.i[916,929] [2023-12-23 02:20:01,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:20:01,939 INFO L206 MainTranslator]: Completed translation [2023-12-23 02:20:01,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01 WrapperNode [2023-12-23 02:20:01,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 02:20:01,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 02:20:01,940 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 02:20:01,940 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 02:20:01,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:01,964 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:02,014 INFO L138 Inliner]: procedures = 27, calls = 105, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 493 [2023-12-23 02:20:02,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 02:20:02,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 02:20:02,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 02:20:02,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 02:20:02,033 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:02,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:02,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:02,073 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 02:20:02,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:02,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:02,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:02,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:02,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:02,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:02,132 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 02:20:02,133 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 02:20:02,133 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 02:20:02,133 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 02:20:02,134 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01" (1/1) ... [2023-12-23 02:20:02,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:20:02,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 02:20:02,169 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 02:20:02,196 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 02:20:02,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 02:20:02,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 02:20:02,210 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 02:20:02,211 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 02:20:02,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 02:20:02,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 02:20:02,339 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 02:20:02,341 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 02:20:22,073 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 02:20:22,135 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 02:20:22,135 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 02:20:22,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:20:22 BoogieIcfgContainer [2023-12-23 02:20:22,136 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 02:20:22,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 02:20:22,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 02:20:22,141 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 02:20:22,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 02:20:01" (1/3) ... [2023-12-23 02:20:22,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c67eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:20:22, skipping insertion in model container [2023-12-23 02:20:22,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:20:01" (2/3) ... [2023-12-23 02:20:22,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c67eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:20:22, skipping insertion in model container [2023-12-23 02:20:22,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:20:22" (3/3) ... [2023-12-23 02:20:22,143 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-36.i [2023-12-23 02:20:22,158 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 02:20:22,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 02:20:22,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 02:20:22,213 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;@4f3528b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 02:20:22,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 02:20:22,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 220 states, 125 states have (on average 1.488) internal successors, (186), 126 states have internal predecessors, (186), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-23 02:20:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2023-12-23 02:20:22,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:20:22,246 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:22,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:20:22,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:20:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1038278848, now seen corresponding path program 1 times [2023-12-23 02:20:22,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:20:22,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324491318] [2023-12-23 02:20:22,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:20:22,267 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 02:20:22,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:20:22,276 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 02:20:22,281 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 02:20:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:20:23,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 02:20:23,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:20:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 3974 proven. 0 refuted. 0 times theorem prover too weak. 12770 trivial. 0 not checked. [2023-12-23 02:20:23,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:20:23,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:20:23,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324491318] [2023-12-23 02:20:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324491318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:20:23,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:20:23,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 02:20:23,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685855824] [2023-12-23 02:20:23,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:20:23,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 02:20:23,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:20:23,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 02:20:23,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 02:20:24,003 INFO L87 Difference]: Start difference. First operand has 220 states, 125 states have (on average 1.488) internal successors, (186), 126 states have internal predecessors, (186), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-23 02:20:28,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:20:28,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:20:28,850 INFO L93 Difference]: Finished difference Result 433 states and 822 transitions. [2023-12-23 02:20:29,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 02:20:29,097 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 561 [2023-12-23 02:20:29,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:20:29,106 INFO L225 Difference]: With dead ends: 433 [2023-12-23 02:20:29,106 INFO L226 Difference]: Without dead ends: 214 [2023-12-23 02:20:29,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 560 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 02:20:29,114 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-23 02:20:29,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2023-12-23 02:20:29,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-23 02:20:29,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-12-23 02:20:29,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 120 states have (on average 1.425) internal successors, (171), 120 states have internal predecessors, (171), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-12-23 02:20:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 355 transitions. [2023-12-23 02:20:29,198 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 355 transitions. Word has length 561 [2023-12-23 02:20:29,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:20:29,200 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 355 transitions. [2023-12-23 02:20:29,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-12-23 02:20:29,201 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 355 transitions. [2023-12-23 02:20:29,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2023-12-23 02:20:29,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:20:29,220 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:29,268 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 02:20:29,432 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 02:20:29,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:20:29,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:20:29,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1526997244, now seen corresponding path program 1 times [2023-12-23 02:20:29,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:20:29,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016512956] [2023-12-23 02:20:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:20:29,436 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 02:20:29,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:20:29,439 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 02:20:29,472 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 02:20:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:20:30,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 02:20:30,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:20:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-12-23 02:20:31,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:20:31,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:20:31,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016512956] [2023-12-23 02:20:31,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016512956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:20:31,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:20:31,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-23 02:20:31,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258657252] [2023-12-23 02:20:31,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:20:31,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 02:20:31,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:20:31,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 02:20:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-23 02:20:31,353 INFO L87 Difference]: Start difference. First operand 214 states and 355 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-23 02:20:37,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:20:41,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:20:45,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:20:49,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:20:53,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:20:57,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:20:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:20:58,170 INFO L93 Difference]: Finished difference Result 640 states and 1064 transitions. [2023-12-23 02:20:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 02:20:58,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 561 [2023-12-23 02:20:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:20:58,179 INFO L225 Difference]: With dead ends: 640 [2023-12-23 02:20:58,179 INFO L226 Difference]: Without dead ends: 427 [2023-12-23 02:20:58,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-23 02:20:58,181 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 343 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2023-12-23 02:20:58,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 964 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 6 Unknown, 0 Unchecked, 26.7s Time] [2023-12-23 02:20:58,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-12-23 02:20:58,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 421. [2023-12-23 02:20:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 275 states have (on average 1.5236363636363637) internal successors, (419), 277 states have internal predecessors, (419), 142 states have call successors, (142), 3 states have call predecessors, (142), 3 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-23 02:20:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 703 transitions. [2023-12-23 02:20:58,260 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 703 transitions. Word has length 561 [2023-12-23 02:20:58,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:20:58,264 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 703 transitions. [2023-12-23 02:20:58,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-23 02:20:58,264 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 703 transitions. [2023-12-23 02:20:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2023-12-23 02:20:58,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:20:58,282 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:58,323 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 02:20:58,504 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 02:20:58,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:20:58,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:20:58,505 INFO L85 PathProgramCache]: Analyzing trace with hash 840445062, now seen corresponding path program 1 times [2023-12-23 02:20:58,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:20:58,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204724015] [2023-12-23 02:20:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:20:58,507 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 02:20:58,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:20:58,508 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 02:20:58,527 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 02:20:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:20:59,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 02:20:59,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:21:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-12-23 02:21:10,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:21:10,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:21:10,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204724015] [2023-12-23 02:21:10,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204724015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:21:10,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:21:10,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 02:21:10,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208313040] [2023-12-23 02:21:10,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:21:10,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 02:21:10,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:21:10,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 02:21:10,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:21:10,151 INFO L87 Difference]: Start difference. First operand 421 states and 703 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-23 02:21:15,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:21:19,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:21:23,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:21:23,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:21:23,350 INFO L93 Difference]: Finished difference Result 1261 states and 2107 transitions. [2023-12-23 02:21:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 02:21:23,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 561 [2023-12-23 02:21:23,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:21:23,358 INFO L225 Difference]: With dead ends: 1261 [2023-12-23 02:21:23,359 INFO L226 Difference]: Without dead ends: 841 [2023-12-23 02:21:23,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:21:23,366 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 88 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2023-12-23 02:21:23,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 696 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2023-12-23 02:21:23,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-12-23 02:21:23,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 839. [2023-12-23 02:21:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 548 states have (on average 1.52007299270073) internal successors, (833), 552 states have internal predecessors, (833), 284 states have call successors, (284), 6 states have call predecessors, (284), 6 states have return successors, (284), 280 states have call predecessors, (284), 284 states have call successors, (284) [2023-12-23 02:21:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1401 transitions. [2023-12-23 02:21:23,494 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1401 transitions. Word has length 561 [2023-12-23 02:21:23,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:21:23,495 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1401 transitions. [2023-12-23 02:21:23,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-12-23 02:21:23,496 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1401 transitions. [2023-12-23 02:21:23,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2023-12-23 02:21:23,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:21:23,501 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:23,534 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 (4)] Ended with exit code 0 [2023-12-23 02:21:23,706 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 02:21:23,707 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:21:23,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:21:23,708 INFO L85 PathProgramCache]: Analyzing trace with hash -964993272, now seen corresponding path program 1 times [2023-12-23 02:21:23,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:21:23,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307886244] [2023-12-23 02:21:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:21:23,709 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 02:21:23,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:21:23,710 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 02:21:23,721 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 02:21:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:21:25,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 02:21:25,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:21:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8223 proven. 159 refuted. 0 times theorem prover too weak. 8362 trivial. 0 not checked. [2023-12-23 02:21:30,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:21:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 114 proven. 159 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2023-12-23 02:21:33,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:21:33,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307886244] [2023-12-23 02:21:33,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307886244] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:21:33,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:21:33,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 02:21:33,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259169795] [2023-12-23 02:21:33,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:21:33,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 02:21:33,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:21:33,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 02:21:33,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 02:21:33,788 INFO L87 Difference]: Start difference. First operand 839 states and 1401 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2023-12-23 02:21:45,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:21:49,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:21:53,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:21:55,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:21:55,954 INFO L93 Difference]: Finished difference Result 1766 states and 2925 transitions. [2023-12-23 02:21:55,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 02:21:55,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) Word has length 561 [2023-12-23 02:21:55,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:21:55,962 INFO L225 Difference]: With dead ends: 1766 [2023-12-23 02:21:55,962 INFO L226 Difference]: Without dead ends: 928 [2023-12-23 02:21:55,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 1114 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 02:21:55,966 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 142 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2023-12-23 02:21:55,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 760 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 847 Invalid, 3 Unknown, 0 Unchecked, 21.7s Time] [2023-12-23 02:21:55,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2023-12-23 02:21:56,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 911. [2023-12-23 02:21:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 579 states have (on average 1.450777202072539) internal successors, (840), 584 states have internal predecessors, (840), 322 states have call successors, (322), 9 states have call predecessors, (322), 9 states have return successors, (322), 317 states have call predecessors, (322), 322 states have call successors, (322) [2023-12-23 02:21:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1484 transitions. [2023-12-23 02:21:56,053 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1484 transitions. Word has length 561 [2023-12-23 02:21:56,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:21:56,055 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1484 transitions. [2023-12-23 02:21:56,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 2 states have call predecessors, (146), 2 states have call successors, (146) [2023-12-23 02:21:56,056 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1484 transitions. [2023-12-23 02:21:56,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2023-12-23 02:21:56,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:21:56,060 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:21:56,106 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 (5)] Forceful destruction successful, exit code 0 [2023-12-23 02:21:56,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /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 02:21:56,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:21:56,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:21:56,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2050110346, now seen corresponding path program 1 times [2023-12-23 02:21:56,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:21:56,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183525165] [2023-12-23 02:21:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:21:56,290 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 02:21:56,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:21:56,291 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:21:56,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 02:21:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:21:57,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-23 02:21:57,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:27:16,992 WARN L293 SmtUtils]: Spent 10.21s on a formula simplification. DAG size of input: 78 DAG size of output: 76 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 02:27:44,182 WARN L293 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 95 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 02:29:48,545 WARN L293 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-23 02:31:33,842 WARN L293 SmtUtils]: Spent 54.93s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-23 02:31:56,940 WARN L293 SmtUtils]: Spent 7.73s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-23 02:34:33,279 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 (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 02:34:33,288 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-23 02:34:34,056 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-23 02:34:34,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-23 02:34:34,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:34:34,268 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 562 with TraceHistMax 92,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-13-2-2-2-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. [2023-12-23 02:34:34,274 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-23 02:34:34,276 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-23 02:34:34,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 02:34:34 BoogieIcfgContainer [2023-12-23 02:34:34,278 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-23 02:34:34,278 INFO L158 Benchmark]: Toolchain (without parser) took 872838.10ms. Allocated memory was 195.0MB in the beginning and 266.3MB in the end (delta: 71.3MB). Free memory was 148.5MB in the beginning and 215.6MB in the end (delta: -67.1MB). Peak memory consumption was 150.3MB. Max. memory is 8.0GB. [2023-12-23 02:34:34,278 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 195.0MB. Free memory is still 153.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-23 02:34:34,279 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.60ms. Allocated memory is still 195.0MB. Free memory was 148.1MB in the beginning and 123.3MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-23 02:34:34,279 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.66ms. Allocated memory is still 195.0MB. Free memory was 123.3MB in the beginning and 118.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-23 02:34:34,279 INFO L158 Benchmark]: Boogie Preprocessor took 117.16ms. Allocated memory is still 195.0MB. Free memory was 118.7MB in the beginning and 111.8MB in the end (delta: 7.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-23 02:34:34,279 INFO L158 Benchmark]: RCFGBuilder took 20002.52ms. Allocated memory is still 195.0MB. Free memory was 111.8MB in the beginning and 124.6MB in the end (delta: -12.9MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2023-12-23 02:34:34,280 INFO L158 Benchmark]: TraceAbstraction took 852139.61ms. Allocated memory was 195.0MB in the beginning and 266.3MB in the end (delta: 71.3MB). Free memory was 124.1MB in the beginning and 215.6MB in the end (delta: -91.5MB). Peak memory consumption was 126.6MB. Max. memory is 8.0GB. [2023-12-23 02:34:34,281 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 195.0MB. Free memory is still 153.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 498.60ms. Allocated memory is still 195.0MB. Free memory was 148.1MB in the beginning and 123.3MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 74.66ms. Allocated memory is still 195.0MB. Free memory was 123.3MB in the beginning and 118.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 117.16ms. Allocated memory is still 195.0MB. Free memory was 118.7MB in the beginning and 111.8MB in the end (delta: 7.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 20002.52ms. Allocated memory is still 195.0MB. Free memory was 111.8MB in the beginning and 124.6MB in the end (delta: -12.9MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * TraceAbstraction took 852139.61ms. Allocated memory was 195.0MB in the beginning and 266.3MB in the end (delta: 71.3MB). Free memory was 124.1MB in the beginning and 215.6MB in the end (delta: -91.5MB). Peak memory consumption was 126.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 562 with TraceHistMax 92,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-13-2-2-2-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 220 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 852.1s, OverallIterations: 5, TraceHistogramMax: 92, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 67.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 mSolverCounterUnknown, 611 SdHoareTripleChecker+Valid, 66.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 573 mSDsluCounter, 2772 SdHoareTripleChecker+Invalid, 65.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1420 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 958 IncrementalHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 1352 mSDtfsCounter, 958 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2804 GetRequests, 2791 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=911occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 5.2s SatisfiabilityAnalysisTime, 19.6s InterpolantComputationTime, 2244 NumberOfCodeBlocks, 2244 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 2800 ConstructedInterpolants, 0 QuantifiedInterpolants, 6350 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3525 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 83402/83720 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown