/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-100_file-56.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 10:48:03,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 10:48:03,835 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 10:48:03,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 10:48:03,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 10:48:03,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 10:48:03,860 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 10:48:03,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 10:48:03,861 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 10:48:03,863 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 10:48:03,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 10:48:03,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 10:48:03,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 10:48:03,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 10:48:03,866 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 10:48:03,866 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 10:48:03,866 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 10:48:03,866 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 10:48:03,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 10:48:03,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 10:48:03,868 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 10:48:03,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 10:48:03,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 10:48:03,868 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 10:48:03,869 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 10:48:03,869 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 10:48:03,869 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 10:48:03,869 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 10:48:03,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 10:48:03,869 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 10:48:03,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 10:48:03,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 10:48:03,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 10:48:03,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 10:48:03,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:48:03,871 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 10:48:03,871 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 10:48:03,871 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 10:48:03,871 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 10:48:03,871 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 10:48:03,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 10:48:03,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 10:48:03,872 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 10:48:03,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 10:48:03,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 10:48:03,872 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 10:48:03,872 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 10:48:04,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 10:48:04,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 10:48:04,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 10:48:04,062 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 10:48:04,062 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 10:48:04,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2023-12-16 10:48:05,305 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 10:48:05,523 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 10:48:05,524 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2023-12-16 10:48:05,545 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab205e09/ea291b33fb384abb87d9ef8826f612ca/FLAG6751ecee6 [2023-12-16 10:48:05,555 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab205e09/ea291b33fb384abb87d9ef8826f612ca [2023-12-16 10:48:05,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 10:48:05,557 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 10:48:05,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 10:48:05,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 10:48:05,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 10:48:05,576 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4701bb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05, skipping insertion in model container [2023-12-16 10:48:05,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,610 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 10:48:05,721 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-100_file-56.i[916,929] [2023-12-16 10:48:05,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:48:05,809 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 10:48:05,817 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-100_file-56.i[916,929] [2023-12-16 10:48:05,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 10:48:05,864 INFO L206 MainTranslator]: Completed translation [2023-12-16 10:48:05,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05 WrapperNode [2023-12-16 10:48:05,865 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 10:48:05,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 10:48:05,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 10:48:05,866 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 10:48:05,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,885 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,925 INFO L138 Inliner]: procedures = 27, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 294 [2023-12-16 10:48:05,926 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 10:48:05,926 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 10:48:05,926 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 10:48:05,926 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 10:48:05,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,942 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,953 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 10:48:05,954 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,954 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,974 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,977 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,980 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 10:48:05,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 10:48:05,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 10:48:05,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 10:48:05,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05" (1/1) ... [2023-12-16 10:48:05,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 10:48:06,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 10:48:06,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 10:48:06,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 10:48:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 10:48:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 10:48:06,051 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 10:48:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 10:48:06,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 10:48:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 10:48:06,157 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 10:48:06,159 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 10:48:19,031 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 10:48:19,090 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 10:48:19,090 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 10:48:19,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:48:19 BoogieIcfgContainer [2023-12-16 10:48:19,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 10:48:19,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 10:48:19,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 10:48:19,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 10:48:19,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 10:48:05" (1/3) ... [2023-12-16 10:48:19,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adedeb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:48:19, skipping insertion in model container [2023-12-16 10:48:19,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:48:05" (2/3) ... [2023-12-16 10:48:19,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1adedeb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:48:19, skipping insertion in model container [2023-12-16 10:48:19,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:48:19" (3/3) ... [2023-12-16 10:48:19,099 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-56.i [2023-12-16 10:48:19,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 10:48:19,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 10:48:19,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 10:48:19,165 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;@6e424e71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 10:48:19,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 10:48:19,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 69 states have (on average 1.434782608695652) internal successors, (99), 70 states have internal predecessors, (99), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-16 10:48:19,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-12-16 10:48:19,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:48:19,197 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:48:19,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:48:19,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:48:19,201 INFO L85 PathProgramCache]: Analyzing trace with hash -626061323, now seen corresponding path program 1 times [2023-12-16 10:48:19,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:48:19,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166136432] [2023-12-16 10:48:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:48:19,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:48:19,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:48:19,215 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:48:19,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 10:48:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:48:19,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 10:48:19,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:48:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2348 proven. 0 refuted. 0 times theorem prover too weak. 4036 trivial. 0 not checked. [2023-12-16 10:48:19,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:48:19,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:48:19,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166136432] [2023-12-16 10:48:19,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166136432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:48:19,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:48:19,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 10:48:19,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942662949] [2023-12-16 10:48:19,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:48:19,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 10:48:19,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:48:19,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 10:48:19,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:48:19,911 INFO L87 Difference]: Start difference. First operand has 129 states, 69 states have (on average 1.434782608695652) internal successors, (99), 70 states have internal predecessors, (99), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-16 10:48:19,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:48:19,987 INFO L93 Difference]: Finished difference Result 255 states and 481 transitions. [2023-12-16 10:48:19,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 10:48:19,996 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 342 [2023-12-16 10:48:19,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:48:20,003 INFO L225 Difference]: With dead ends: 255 [2023-12-16 10:48:20,003 INFO L226 Difference]: Without dead ends: 127 [2023-12-16 10:48:20,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 10:48:20,012 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 10:48:20,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 205 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 10:48:20,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-16 10:48:20,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-12-16 10:48:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 68 states have internal predecessors, (94), 57 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-16 10:48:20,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 208 transitions. [2023-12-16 10:48:20,053 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 208 transitions. Word has length 342 [2023-12-16 10:48:20,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:48:20,053 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 208 transitions. [2023-12-16 10:48:20,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-16 10:48:20,054 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 208 transitions. [2023-12-16 10:48:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-12-16 10:48:20,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:48:20,059 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:48:20,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 10:48:20,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:48:20,275 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:48:20,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:48:20,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1156205551, now seen corresponding path program 1 times [2023-12-16 10:48:20,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:48:20,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100833865] [2023-12-16 10:48:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:48:20,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:48:20,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:48:20,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 10:48:20,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 10:48:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:48:20,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 10:48:20,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:48:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-16 10:48:20,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:48:20,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:48:20,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100833865] [2023-12-16 10:48:20,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100833865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:48:20,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:48:20,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 10:48:20,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213229063] [2023-12-16 10:48:20,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:48:20,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 10:48:20,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:48:20,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 10:48:20,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 10:48:20,835 INFO L87 Difference]: Start difference. First operand 127 states and 208 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-16 10:48:21,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:48:21,997 INFO L93 Difference]: Finished difference Result 343 states and 561 transitions. [2023-12-16 10:48:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 10:48:22,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 342 [2023-12-16 10:48:22,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:48:22,005 INFO L225 Difference]: With dead ends: 343 [2023-12-16 10:48:22,005 INFO L226 Difference]: Without dead ends: 217 [2023-12-16 10:48:22,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 10:48:22,007 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 142 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 10:48:22,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 402 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 10:48:22,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-16 10:48:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2023-12-16 10:48:22,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 117 states have internal predecessors, (160), 95 states have call successors, (95), 2 states have call predecessors, (95), 2 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2023-12-16 10:48:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 350 transitions. [2023-12-16 10:48:22,043 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 350 transitions. Word has length 342 [2023-12-16 10:48:22,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:48:22,044 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 350 transitions. [2023-12-16 10:48:22,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-16 10:48:22,044 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 350 transitions. [2023-12-16 10:48:22,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-12-16 10:48:22,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:48:22,050 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:48:22,085 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 [2023-12-16 10:48:22,285 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 [2023-12-16 10:48:22,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:48:22,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:48:22,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1479696375, now seen corresponding path program 1 times [2023-12-16 10:48:22,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:48:22,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026310595] [2023-12-16 10:48:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:48:22,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:48:22,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:48:22,295 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) [2023-12-16 10:48:22,336 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 [2023-12-16 10:48:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:48:22,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 10:48:22,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:48:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2023-12-16 10:48:22,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 10:48:22,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:48:22,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026310595] [2023-12-16 10:48:22,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026310595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 10:48:22,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 10:48:22,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 10:48:22,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942449106] [2023-12-16 10:48:22,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 10:48:22,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 10:48:22,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:48:22,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 10:48:22,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 10:48:22,905 INFO L87 Difference]: Start difference. First operand 214 states and 350 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-16 10:48:24,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:48:24,196 INFO L93 Difference]: Finished difference Result 434 states and 704 transitions. [2023-12-16 10:48:24,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 10:48:24,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 342 [2023-12-16 10:48:24,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:48:24,199 INFO L225 Difference]: With dead ends: 434 [2023-12-16 10:48:24,199 INFO L226 Difference]: Without dead ends: 221 [2023-12-16 10:48:24,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 10:48:24,201 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 140 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 10:48:24,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 489 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 10:48:24,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-16 10:48:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 142. [2023-12-16 10:48:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 82 states have (on average 1.4024390243902438) internal successors, (115), 82 states have internal predecessors, (115), 57 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-16 10:48:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 229 transitions. [2023-12-16 10:48:24,214 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 229 transitions. Word has length 342 [2023-12-16 10:48:24,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:48:24,214 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 229 transitions. [2023-12-16 10:48:24,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (57), 1 states have call predecessors, (57), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-12-16 10:48:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 229 transitions. [2023-12-16 10:48:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-12-16 10:48:24,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:48:24,217 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:48:24,229 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 [2023-12-16 10:48:24,429 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 [2023-12-16 10:48:24,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:48:24,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:48:24,430 INFO L85 PathProgramCache]: Analyzing trace with hash 637629013, now seen corresponding path program 1 times [2023-12-16 10:48:24,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:48:24,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747010825] [2023-12-16 10:48:24,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:48:24,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:48:24,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:48:24,432 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) [2023-12-16 10:48:24,437 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 [2023-12-16 10:48:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:48:24,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 10:48:24,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:48:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 2942 proven. 57 refuted. 0 times theorem prover too weak. 3385 trivial. 0 not checked. [2023-12-16 10:48:26,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:48:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 111 proven. 57 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-12-16 10:48:27,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:48:27,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747010825] [2023-12-16 10:48:27,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747010825] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:48:27,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:48:27,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-16 10:48:27,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954967970] [2023-12-16 10:48:27,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:48:27,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 10:48:27,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:48:27,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 10:48:27,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-16 10:48:27,354 INFO L87 Difference]: Start difference. First operand 142 states and 229 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2023-12-16 10:48:32,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:48:32,168 INFO L93 Difference]: Finished difference Result 680 states and 1083 transitions. [2023-12-16 10:48:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 10:48:32,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) Word has length 343 [2023-12-16 10:48:32,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:48:32,172 INFO L225 Difference]: With dead ends: 680 [2023-12-16 10:48:32,172 INFO L226 Difference]: Without dead ends: 539 [2023-12-16 10:48:32,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2023-12-16 10:48:32,178 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 714 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-16 10:48:32,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 852 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-16 10:48:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2023-12-16 10:48:32,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 363. [2023-12-16 10:48:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 206 states have (on average 1.3786407766990292) internal successors, (284), 207 states have internal predecessors, (284), 150 states have call successors, (150), 6 states have call predecessors, (150), 6 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2023-12-16 10:48:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 584 transitions. [2023-12-16 10:48:32,274 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 584 transitions. Word has length 343 [2023-12-16 10:48:32,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:48:32,275 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 584 transitions. [2023-12-16 10:48:32,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 4 states have call successors, (114), 3 states have call predecessors, (114), 5 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2023-12-16 10:48:32,275 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 584 transitions. [2023-12-16 10:48:32,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-12-16 10:48:32,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:48:32,279 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:48:32,292 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 [2023-12-16 10:48:32,490 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 [2023-12-16 10:48:32,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:48:32,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:48:32,491 INFO L85 PathProgramCache]: Analyzing trace with hash -950718889, now seen corresponding path program 1 times [2023-12-16 10:48:32,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:48:32,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579230262] [2023-12-16 10:48:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:48:32,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:48:32,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:48:32,493 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) [2023-12-16 10:48:32,494 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 [2023-12-16 10:48:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:48:33,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 10:48:33,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 10:48:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 1152 proven. 303 refuted. 0 times theorem prover too weak. 4929 trivial. 0 not checked. [2023-12-16 10:48:34,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 10:48:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 27 proven. 306 refuted. 0 times theorem prover too weak. 6051 trivial. 0 not checked. [2023-12-16 10:48:35,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 10:48:35,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579230262] [2023-12-16 10:48:35,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579230262] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 10:48:35,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 10:48:35,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-16 10:48:35,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002236447] [2023-12-16 10:48:35,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 10:48:35,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 10:48:35,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 10:48:35,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 10:48:35,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-16 10:48:35,514 INFO L87 Difference]: Start difference. First operand 363 states and 584 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 3 states have call successors, (109), 3 states have call predecessors, (109), 7 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) [2023-12-16 10:48:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 10:48:36,885 INFO L93 Difference]: Finished difference Result 761 states and 1197 transitions. [2023-12-16 10:48:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 10:48:36,904 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 3 states have call successors, (109), 3 states have call predecessors, (109), 7 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) Word has length 343 [2023-12-16 10:48:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 10:48:36,909 INFO L225 Difference]: With dead ends: 761 [2023-12-16 10:48:36,909 INFO L226 Difference]: Without dead ends: 399 [2023-12-16 10:48:36,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 674 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2023-12-16 10:48:36,912 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 199 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 10:48:36,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 392 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 10:48:36,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-12-16 10:48:36,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 387. [2023-12-16 10:48:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 224 states have (on average 1.3214285714285714) internal successors, (296), 225 states have internal predecessors, (296), 150 states have call successors, (150), 12 states have call predecessors, (150), 12 states have return successors, (150), 149 states have call predecessors, (150), 150 states have call successors, (150) [2023-12-16 10:48:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 596 transitions. [2023-12-16 10:48:36,945 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 596 transitions. Word has length 343 [2023-12-16 10:48:36,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 10:48:36,948 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 596 transitions. [2023-12-16 10:48:36,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 3 states have call successors, (109), 3 states have call predecessors, (109), 7 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) [2023-12-16 10:48:36,952 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 596 transitions. [2023-12-16 10:48:36,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-12-16 10:48:36,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 10:48:36,954 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 10:48:36,982 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 [2023-12-16 10:48:37,183 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 [2023-12-16 10:48:37,184 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 10:48:37,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 10:48:37,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1343745899, now seen corresponding path program 1 times [2023-12-16 10:48:37,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 10:48:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716648943] [2023-12-16 10:48:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 10:48:37,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 10:48:37,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 10:48:37,187 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) [2023-12-16 10:48:37,189 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 [2023-12-16 10:48:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 10:48:37,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 10:48:37,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 10:49:08,109 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 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 10:49:08,109 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 10:49:09,136 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 [2023-12-16 10:49:09,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0