/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-67.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 02:45:16,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 02:45:17,020 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 02:45:17,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 02:45:17,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 02:45:17,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 02:45:17,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 02:45:17,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 02:45:17,048 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 02:45:17,051 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 02:45:17,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 02:45:17,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 02:45:17,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 02:45:17,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 02:45:17,053 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 02:45:17,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 02:45:17,054 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 02:45:17,054 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 02:45:17,054 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 02:45:17,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 02:45:17,055 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 02:45:17,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 02:45:17,056 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 02:45:17,056 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 02:45:17,056 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 02:45:17,056 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 02:45:17,056 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 02:45:17,057 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 02:45:17,057 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 02:45:17,057 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 02:45:17,058 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 02:45:17,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 02:45:17,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 02:45:17,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 02:45:17,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:45:17,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 02:45:17,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 02:45:17,058 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 02:45:17,059 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 02:45:17,059 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 02:45:17,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 02:45:17,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 02:45:17,059 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 02:45:17,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 02:45:17,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 02:45:17,060 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 02:45:17,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 02:45:17,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 02:45:17,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 02:45:17,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 02:45:17,299 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 02:45:17,299 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 02:45:17,300 INFO L431 ainManager$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-67.i [2023-12-23 02:45:18,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 02:45:18,585 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 02:45:18,585 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-67.i [2023-12-23 02:45:18,597 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ce58fc22/fc311df923e944a4978c99a77886f697/FLAG17bfb700e [2023-12-23 02:45:18,951 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ce58fc22/fc311df923e944a4978c99a77886f697 [2023-12-23 02:45:18,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 02:45:18,954 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 02:45:18,954 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 02:45:18,954 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 02:45:18,958 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 02:45:18,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:45:18" (1/1) ... [2023-12-23 02:45:18,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d110feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:18, skipping insertion in model container [2023-12-23 02:45:18,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:45:18" (1/1) ... [2023-12-23 02:45:19,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 02:45:19,098 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-67.i[916,929] [2023-12-23 02:45:19,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:45:19,180 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 02:45:19,189 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-67.i[916,929] [2023-12-23 02:45:19,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:45:19,248 INFO L206 MainTranslator]: Completed translation [2023-12-23 02:45:19,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19 WrapperNode [2023-12-23 02:45:19,248 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 02:45:19,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 02:45:19,249 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 02:45:19,249 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 02:45:19,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19" (1/1) ... [2023-12-23 02:45:19,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19" (1/1) ... [2023-12-23 02:45:19,304 INFO L138 Inliner]: procedures = 27, calls = 79, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 427 [2023-12-23 02:45:19,304 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 02:45:19,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 02:45:19,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 02:45:19,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 02:45:19,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19" (1/1) ... [2023-12-23 02:45:19,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19" (1/1) ... [2023-12-23 02:45:19,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19" (1/1) ... [2023-12-23 02:45:19,350 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 02:45:19,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19" (1/1) ... [2023-12-23 02:45:19,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19" (1/1) ... [2023-12-23 02:45:19,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19" (1/1) ... [2023-12-23 02:45:19,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19" (1/1) ... [2023-12-23 02:45:19,375 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19" (1/1) ... [2023-12-23 02:45:19,378 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19" (1/1) ... [2023-12-23 02:45:19,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 02:45:19,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 02:45:19,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 02:45:19,383 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 02:45:19,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19" (1/1) ... [2023-12-23 02:45:19,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:45:19,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 02:45:19,416 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 02:45:19,438 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 02:45:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 02:45:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 02:45:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 02:45:19,446 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 02:45:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 02:45:19,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 02:45:19,560 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 02:45:19,561 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 02:45:39,588 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 02:45:39,649 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 02:45:39,650 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 02:45:39,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:45:39 BoogieIcfgContainer [2023-12-23 02:45:39,650 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 02:45:39,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 02:45:39,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 02:45:39,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 02:45:39,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 02:45:18" (1/3) ... [2023-12-23 02:45:39,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de5b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:45:39, skipping insertion in model container [2023-12-23 02:45:39,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:45:19" (2/3) ... [2023-12-23 02:45:39,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6de5b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:45:39, skipping insertion in model container [2023-12-23 02:45:39,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:45:39" (3/3) ... [2023-12-23 02:45:39,657 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-67.i [2023-12-23 02:45:39,672 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 02:45:39,672 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 02:45:39,721 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 02:45:39,731 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;@31f0aad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 02:45:39,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 02:45:39,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 118 states have (on average 1.5932203389830508) internal successors, (188), 119 states have internal predecessors, (188), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-23 02:45:39,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-12-23 02:45:39,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:45:39,769 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:39,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:45:39,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:45:39,777 INFO L85 PathProgramCache]: Analyzing trace with hash 590001704, now seen corresponding path program 1 times [2023-12-23 02:45:39,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:45:39,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566114111] [2023-12-23 02:45:39,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:45:39,793 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 02:45:39,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:45:39,797 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 02:45:39,799 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 02:45:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:45:40,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 02:45:40,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:45:40,753 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 2330 proven. 0 refuted. 0 times theorem prover too weak. 6250 trivial. 0 not checked. [2023-12-23 02:45:40,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:45:40,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:45:40,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566114111] [2023-12-23 02:45:40,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566114111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:45:40,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:45:40,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 02:45:40,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636991530] [2023-12-23 02:45:40,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:45:40,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 02:45:40,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:45:40,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 02:45:40,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 02:45:40,793 INFO L87 Difference]: Start difference. First operand has 187 states, 118 states have (on average 1.5932203389830508) internal successors, (188), 119 states have internal predecessors, (188), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-23 02:45:42,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:45:42,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:45:42,062 INFO L93 Difference]: Finished difference Result 371 states and 704 transitions. [2023-12-23 02:45:42,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 02:45:42,092 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 412 [2023-12-23 02:45:42,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:45:42,102 INFO L225 Difference]: With dead ends: 371 [2023-12-23 02:45:42,102 INFO L226 Difference]: Without dead ends: 185 [2023-12-23 02:45:42,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 411 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 02:45:42,110 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-23 02:45:42,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-23 02:45:42,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-23 02:45:42,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-12-23 02:45:42,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 117 states have (on average 1.564102564102564) internal successors, (183), 117 states have internal predecessors, (183), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-23 02:45:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 315 transitions. [2023-12-23 02:45:42,204 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 315 transitions. Word has length 412 [2023-12-23 02:45:42,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:45:42,205 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 315 transitions. [2023-12-23 02:45:42,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2023-12-23 02:45:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 315 transitions. [2023-12-23 02:45:42,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-12-23 02:45:42,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:45:42,214 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:42,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 02:45:42,437 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 02:45:42,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:45:42,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:45:42,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1084926940, now seen corresponding path program 1 times [2023-12-23 02:45:42,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:45:42,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150329413] [2023-12-23 02:45:42,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:45:42,441 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 02:45:42,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:45:42,445 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 02:45:42,446 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 02:45:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:45:43,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 02:45:43,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:45:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4245 proven. 81 refuted. 0 times theorem prover too weak. 4254 trivial. 0 not checked. [2023-12-23 02:45:44,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:45:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 114 proven. 81 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-23 02:45:44,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:45:44,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150329413] [2023-12-23 02:45:44,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150329413] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:45:44,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:45:44,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 02:45:44,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246642110] [2023-12-23 02:45:44,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:45:44,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 02:45:44,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:45:44,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 02:45:44,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 02:45:44,665 INFO L87 Difference]: Start difference. First operand 185 states and 315 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2023-12-23 02:45:46,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:45:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:45:46,951 INFO L93 Difference]: Finished difference Result 375 states and 634 transitions. [2023-12-23 02:45:46,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 02:45:46,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) Word has length 412 [2023-12-23 02:45:46,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:45:46,986 INFO L225 Difference]: With dead ends: 375 [2023-12-23 02:45:46,986 INFO L226 Difference]: Without dead ends: 191 [2023-12-23 02:45:46,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 816 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 02:45:46,990 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 329 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-23 02:45:46,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 566 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-23 02:45:46,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-23 02:45:47,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2023-12-23 02:45:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 120 states have (on average 1.525) internal successors, (183), 120 states have internal predecessors, (183), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-23 02:45:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 315 transitions. [2023-12-23 02:45:47,017 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 315 transitions. Word has length 412 [2023-12-23 02:45:47,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:45:47,018 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 315 transitions. [2023-12-23 02:45:47,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2023-12-23 02:45:47,018 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 315 transitions. [2023-12-23 02:45:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-12-23 02:45:47,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:45:47,023 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:47,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 02:45:47,240 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 02:45:47,241 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:45:47,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:45:47,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1067539290, now seen corresponding path program 1 times [2023-12-23 02:45:47,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:45:47,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778261525] [2023-12-23 02:45:47,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:45:47,243 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 02:45:47,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:45:47,261 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 02:45:47,295 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 02:45:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:45:48,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 02:45:48,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:45:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4283 proven. 84 refuted. 0 times theorem prover too weak. 4213 trivial. 0 not checked. [2023-12-23 02:45:48,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:45:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 111 proven. 84 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-23 02:45:49,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:45:49,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778261525] [2023-12-23 02:45:49,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778261525] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:45:49,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:45:49,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 02:45:49,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228716540] [2023-12-23 02:45:49,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:45:49,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 02:45:49,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:45:49,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 02:45:49,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 02:45:49,107 INFO L87 Difference]: Start difference. First operand 189 states and 315 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-23 02:45:51,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:45:51,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:45:51,500 INFO L93 Difference]: Finished difference Result 385 states and 636 transitions. [2023-12-23 02:45:51,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 02:45:51,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 412 [2023-12-23 02:45:51,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:45:51,530 INFO L225 Difference]: With dead ends: 385 [2023-12-23 02:45:51,530 INFO L226 Difference]: Without dead ends: 197 [2023-12-23 02:45:51,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 816 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 02:45:51,532 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 340 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-23 02:45:51,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 553 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-23 02:45:51,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-23 02:45:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 193. [2023-12-23 02:45:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 123 states have (on average 1.4878048780487805) internal successors, (183), 123 states have internal predecessors, (183), 66 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-23 02:45:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 315 transitions. [2023-12-23 02:45:51,554 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 315 transitions. Word has length 412 [2023-12-23 02:45:51,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:45:51,563 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 315 transitions. [2023-12-23 02:45:51,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 2 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2023-12-23 02:45:51,564 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 315 transitions. [2023-12-23 02:45:51,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-12-23 02:45:51,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:45:51,568 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:51,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 02:45:51,799 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 02:45:51,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:45:51,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:45:51,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1461906076, now seen corresponding path program 1 times [2023-12-23 02:45:51,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:45:51,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798405473] [2023-12-23 02:45:51,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:45:51,802 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 02:45:51,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:45:51,803 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 02:45:51,807 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 02:45:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:45:52,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 02:45:52,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:45:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 4313 proven. 162 refuted. 0 times theorem prover too weak. 4105 trivial. 0 not checked. [2023-12-23 02:45:54,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:45:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 222 proven. 165 refuted. 0 times theorem prover too weak. 8193 trivial. 0 not checked. [2023-12-23 02:45:55,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:45:55,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798405473] [2023-12-23 02:45:55,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798405473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:45:55,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:45:55,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-23 02:45:55,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758607880] [2023-12-23 02:45:55,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:45:55,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 02:45:55,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:45:55,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 02:45:55,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-23 02:45:55,046 INFO L87 Difference]: Start difference. First operand 193 states and 315 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 3 states have call successors, (94), 3 states have call predecessors, (94), 6 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2023-12-23 02:45:58,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 02:45:58,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:45:58,928 INFO L93 Difference]: Finished difference Result 577 states and 936 transitions. [2023-12-23 02:45:58,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-23 02:45:58,929 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 3 states have call successors, (94), 3 states have call predecessors, (94), 6 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) Word has length 412 [2023-12-23 02:45:58,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:45:58,931 INFO L225 Difference]: With dead ends: 577 [2023-12-23 02:45:58,931 INFO L226 Difference]: Without dead ends: 385 [2023-12-23 02:45:58,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 812 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=297, Invalid=695, Unknown=0, NotChecked=0, Total=992 [2023-12-23 02:45:58,932 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 1064 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-23 02:45:58,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 897 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-23 02:45:58,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-23 02:45:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 374. [2023-12-23 02:45:58,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 235 states have (on average 1.4595744680851064) internal successors, (343), 235 states have internal predecessors, (343), 132 states have call successors, (132), 6 states have call predecessors, (132), 6 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-23 02:45:58,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 607 transitions. [2023-12-23 02:45:58,980 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 607 transitions. Word has length 412 [2023-12-23 02:45:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:45:58,981 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 607 transitions. [2023-12-23 02:45:58,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 3 states have call successors, (94), 3 states have call predecessors, (94), 6 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) [2023-12-23 02:45:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 607 transitions. [2023-12-23 02:45:58,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-12-23 02:45:58,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:45:58,984 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:59,005 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 02:45:59,195 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 02:45:59,200 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:45:59,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:45:59,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1870547716, now seen corresponding path program 1 times [2023-12-23 02:45:59,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:45:59,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933165180] [2023-12-23 02:45:59,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:45:59,201 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 02:45:59,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:45:59,203 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 02:45:59,204 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 02:45:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:46:00,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 02:46:00,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:46:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-23 02:46:00,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:46:00,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:46:00,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933165180] [2023-12-23 02:46:00,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933165180] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:46:00,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:46:00,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 02:46:00,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927093710] [2023-12-23 02:46:00,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:46:00,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 02:46:00,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:46:00,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 02:46:00,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:46:00,086 INFO L87 Difference]: Start difference. First operand 374 states and 607 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-23 02:46:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:46:01,058 INFO L93 Difference]: Finished difference Result 982 states and 1603 transitions. [2023-12-23 02:46:01,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 02:46:01,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 412 [2023-12-23 02:46:01,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:46:01,062 INFO L225 Difference]: With dead ends: 982 [2023-12-23 02:46:01,062 INFO L226 Difference]: Without dead ends: 609 [2023-12-23 02:46:01,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 410 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 02:46:01,065 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 191 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-23 02:46:01,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 759 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-23 02:46:01,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-12-23 02:46:01,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 605. [2023-12-23 02:46:01,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 404 states have (on average 1.504950495049505) internal successors, (608), 406 states have internal predecessors, (608), 192 states have call successors, (192), 8 states have call predecessors, (192), 8 states have return successors, (192), 190 states have call predecessors, (192), 192 states have call successors, (192) [2023-12-23 02:46:01,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 992 transitions. [2023-12-23 02:46:01,116 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 992 transitions. Word has length 412 [2023-12-23 02:46:01,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:46:01,117 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 992 transitions. [2023-12-23 02:46:01,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-23 02:46:01,117 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 992 transitions. [2023-12-23 02:46:01,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-12-23 02:46:01,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:46:01,120 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:01,143 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 02:46:01,341 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 02:46:01,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:46:01,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:46:01,342 INFO L85 PathProgramCache]: Analyzing trace with hash -287813961, now seen corresponding path program 1 times [2023-12-23 02:46:01,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:46:01,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143017970] [2023-12-23 02:46:01,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:46:01,343 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 02:46:01,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:46:01,344 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:46:01,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-23 02:46:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:46:02,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 02:46:02,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:46:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2023-12-23 02:46:03,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:46:03,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:46:03,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143017970] [2023-12-23 02:46:03,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143017970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:46:03,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:46:03,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 02:46:03,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003379411] [2023-12-23 02:46:03,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:46:03,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 02:46:03,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:46:03,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 02:46:03,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 02:46:03,338 INFO L87 Difference]: Start difference. First operand 605 states and 992 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-23 02:46:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:46:05,418 INFO L93 Difference]: Finished difference Result 1591 states and 2623 transitions. [2023-12-23 02:46:05,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 02:46:05,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) Word has length 413 [2023-12-23 02:46:05,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:46:05,450 INFO L225 Difference]: With dead ends: 1591 [2023-12-23 02:46:05,451 INFO L226 Difference]: Without dead ends: 987 [2023-12-23 02:46:05,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 02:46:05,453 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 256 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-23 02:46:05,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 907 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-23 02:46:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2023-12-23 02:46:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 941. [2023-12-23 02:46:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 671 states have (on average 1.5424739195230999) internal successors, (1035), 673 states have internal predecessors, (1035), 258 states have call successors, (258), 11 states have call predecessors, (258), 11 states have return successors, (258), 256 states have call predecessors, (258), 258 states have call successors, (258) [2023-12-23 02:46:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1551 transitions. [2023-12-23 02:46:05,506 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1551 transitions. Word has length 413 [2023-12-23 02:46:05,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:46:05,507 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1551 transitions. [2023-12-23 02:46:05,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 1 states have call predecessors, (66), 1 states have call successors, (66) [2023-12-23 02:46:05,507 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1551 transitions. [2023-12-23 02:46:05,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-12-23 02:46:05,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:46:05,509 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:05,531 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 (7)] Ended with exit code 0 [2023-12-23 02:46:05,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:46:05,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:46:05,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:46:05,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1510207547, now seen corresponding path program 1 times [2023-12-23 02:46:05,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:46:05,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130307357] [2023-12-23 02:46:05,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:46:05,726 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 02:46:05,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:46:05,727 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:46:05,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 02:46:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:46:06,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 02:46:06,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:46:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 573 proven. 189 refuted. 0 times theorem prover too weak. 7818 trivial. 0 not checked. [2023-12-23 02:46:07,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:46:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8580 backedges. 6 proven. 189 refuted. 0 times theorem prover too weak. 8385 trivial. 0 not checked. [2023-12-23 02:46:08,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:46:08,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130307357] [2023-12-23 02:46:08,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130307357] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:46:08,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:46:08,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 02:46:08,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098947] [2023-12-23 02:46:08,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:46:08,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 02:46:08,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:46:08,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 02:46:08,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 02:46:08,576 INFO L87 Difference]: Start difference. First operand 941 states and 1551 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2023-12-23 02:46:10,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:46:10,381 INFO L93 Difference]: Finished difference Result 1573 states and 2557 transitions. [2023-12-23 02:46:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 02:46:10,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) Word has length 415 [2023-12-23 02:46:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:46:10,413 INFO L225 Difference]: With dead ends: 1573 [2023-12-23 02:46:10,413 INFO L226 Difference]: Without dead ends: 969 [2023-12-23 02:46:10,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 822 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 02:46:10,415 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 195 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-23 02:46:10,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 560 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-23 02:46:10,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2023-12-23 02:46:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 953. [2023-12-23 02:46:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 678 states have (on average 1.5132743362831858) internal successors, (1026), 680 states have internal predecessors, (1026), 258 states have call successors, (258), 16 states have call predecessors, (258), 16 states have return successors, (258), 256 states have call predecessors, (258), 258 states have call successors, (258) [2023-12-23 02:46:10,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1542 transitions. [2023-12-23 02:46:10,468 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1542 transitions. Word has length 415 [2023-12-23 02:46:10,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:46:10,469 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1542 transitions. [2023-12-23 02:46:10,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2023-12-23 02:46:10,469 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1542 transitions. [2023-12-23 02:46:10,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-12-23 02:46:10,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:46:10,471 INFO L195 NwaCegarLoop]: trace histogram [66, 66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:46:10,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-23 02:46:10,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:46:10,685 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:46:10,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:46:10,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2050635315, now seen corresponding path program 1 times [2023-12-23 02:46:10,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:46:10,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334523079] [2023-12-23 02:46:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:46:10,686 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 02:46:10,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:46:10,687 INFO L229 MonitoredProcess]: Starting monitored process 9 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 02:46:10,692 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 (9)] Waiting until timeout for monitored process [2023-12-23 02:46:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:46:11,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-23 02:46:11,627 INFO L285 TraceCheckSpWp]: Computing forward predicates...