/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-29.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 11:03:45,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 11:03:45,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 11:03:45,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 11:03:46,000 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 11:03:46,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 11:03:46,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 11:03:46,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 11:03:46,021 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 11:03:46,028 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 11:03:46,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 11:03:46,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 11:03:46,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 11:03:46,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 11:03:46,030 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 11:03:46,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 11:03:46,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 11:03:46,031 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 11:03:46,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 11:03:46,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 11:03:46,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 11:03:46,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 11:03:46,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 11:03:46,032 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 11:03:46,032 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 11:03:46,032 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 11:03:46,032 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 11:03:46,032 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 11:03:46,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 11:03:46,032 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 11:03:46,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 11:03:46,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 11:03:46,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 11:03:46,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 11:03:46,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:03:46,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 11:03:46,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 11:03:46,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 11:03:46,034 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 11:03:46,034 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 11:03:46,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 11:03:46,034 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 11:03:46,034 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 11:03:46,034 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 11:03:46,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 11:03:46,035 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 11:03:46,035 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 11:03:46,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 11:03:46,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 11:03:46,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 11:03:46,234 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 11:03:46,234 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 11:03:46,235 INFO L431 ainManager$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-29.i [2023-12-16 11:03:47,198 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 11:03:47,379 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 11:03:47,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2023-12-16 11:03:47,389 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcdbaea25/d5868c34bfef41389ff2f42ae4c21c0a/FLAGf388f823e [2023-12-16 11:03:47,399 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcdbaea25/d5868c34bfef41389ff2f42ae4c21c0a [2023-12-16 11:03:47,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 11:03:47,401 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 11:03:47,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 11:03:47,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 11:03:47,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 11:03:47,408 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f64d8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47, skipping insertion in model container [2023-12-16 11:03:47,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,449 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 11:03:47,563 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-29.i[916,929] [2023-12-16 11:03:47,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:03:47,676 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 11:03:47,683 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-29.i[916,929] [2023-12-16 11:03:47,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 11:03:47,740 INFO L206 MainTranslator]: Completed translation [2023-12-16 11:03:47,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47 WrapperNode [2023-12-16 11:03:47,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 11:03:47,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 11:03:47,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 11:03:47,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 11:03:47,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,808 INFO L138 Inliner]: procedures = 27, calls = 89, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 433 [2023-12-16 11:03:47,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 11:03:47,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 11:03:47,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 11:03:47,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 11:03:47,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,822 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,842 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 11:03:47,843 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 11:03:47,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 11:03:47,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 11:03:47,879 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 11:03:47,880 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47" (1/1) ... [2023-12-16 11:03:47,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 11:03:47,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 11:03:47,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 11:03:47,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 11:03:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 11:03:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 11:03:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 11:03:47,937 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 11:03:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 11:03:47,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 11:03:48,026 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 11:03:48,028 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 11:03:52,894 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 11:03:52,961 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 11:03:52,962 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 11:03:52,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:03:52 BoogieIcfgContainer [2023-12-16 11:03:52,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 11:03:52,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 11:03:52,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 11:03:52,966 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 11:03:52,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 11:03:47" (1/3) ... [2023-12-16 11:03:52,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177fe7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:03:52, skipping insertion in model container [2023-12-16 11:03:52,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 11:03:47" (2/3) ... [2023-12-16 11:03:52,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177fe7eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 11:03:52, skipping insertion in model container [2023-12-16 11:03:52,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 11:03:52" (3/3) ... [2023-12-16 11:03:52,969 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-29.i [2023-12-16 11:03:52,982 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 11:03:52,982 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 11:03:53,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 11:03:53,028 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;@69c1c5b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 11:03:53,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 11:03:53,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 110 states have (on average 1.5545454545454545) internal successors, (171), 111 states have internal predecessors, (171), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-16 11:03:53,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2023-12-16 11:03:53,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:03:53,055 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:03:53,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:03:53,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:03:53,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2011844461, now seen corresponding path program 1 times [2023-12-16 11:03:53,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:03:53,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513441497] [2023-12-16 11:03:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:03:53,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:03:53,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:03:53,080 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:03:53,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 11:03:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:03:53,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 11:03:53,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:03:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 4550 proven. 0 refuted. 0 times theorem prover too weak. 6850 trivial. 0 not checked. [2023-12-16 11:03:54,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:03:54,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:03:54,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513441497] [2023-12-16 11:03:54,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513441497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:03:54,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:03:54,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 11:03:54,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121665584] [2023-12-16 11:03:54,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:03:54,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 11:03:54,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:03:54,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 11:03:54,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 11:03:54,035 INFO L87 Difference]: Start difference. First operand has 189 states, 110 states have (on average 1.5545454545454545) internal successors, (171), 111 states have internal predecessors, (171), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-16 11:03:55,142 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 [] [2023-12-16 11:03:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:03:55,143 INFO L93 Difference]: Finished difference Result 375 states and 720 transitions. [2023-12-16 11:03:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 11:03:55,169 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 463 [2023-12-16 11:03:55,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:03:55,181 INFO L225 Difference]: With dead ends: 375 [2023-12-16 11:03:55,181 INFO L226 Difference]: Without dead ends: 187 [2023-12-16 11:03:55,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 462 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 11:03:55,191 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 11:03:55,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 315 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 11:03:55,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-12-16 11:03:55,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2023-12-16 11:03:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 109 states have (on average 1.5229357798165137) internal successors, (166), 109 states have internal predecessors, (166), 76 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-16 11:03:55,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 318 transitions. [2023-12-16 11:03:55,258 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 318 transitions. Word has length 463 [2023-12-16 11:03:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:03:55,259 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 318 transitions. [2023-12-16 11:03:55,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-16 11:03:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 318 transitions. [2023-12-16 11:03:55,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2023-12-16 11:03:55,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:03:55,267 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:03:55,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 11:03:55,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:03:55,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:03:55,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:03:55,469 INFO L85 PathProgramCache]: Analyzing trace with hash 571047201, now seen corresponding path program 1 times [2023-12-16 11:03:55,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:03:55,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74138435] [2023-12-16 11:03:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:03:55,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:03:55,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:03:55,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:03:55,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 11:03:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:03:56,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:03:56,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:03:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-16 11:03:56,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:03:56,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:03:56,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74138435] [2023-12-16 11:03:56,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74138435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:03:56,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:03:56,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 11:03:56,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310791017] [2023-12-16 11:03:56,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:03:56,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:03:56,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:03:56,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:03:56,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 11:03:56,468 INFO L87 Difference]: Start difference. First operand 187 states and 318 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-16 11:03:57,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 11:03:58,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:03:58,255 INFO L93 Difference]: Finished difference Result 482 states and 823 transitions. [2023-12-16 11:03:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:03:58,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 463 [2023-12-16 11:03:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:03:58,259 INFO L225 Difference]: With dead ends: 482 [2023-12-16 11:03:58,259 INFO L226 Difference]: Without dead ends: 296 [2023-12-16 11:03:58,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 461 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 11:03:58,261 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 169 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 11:03:58,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 745 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 11:03:58,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-16 11:03:58,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 293. [2023-12-16 11:03:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 184 states have (on average 1.565217391304348) internal successors, (288), 185 states have internal predecessors, (288), 106 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-16 11:03:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 500 transitions. [2023-12-16 11:03:58,286 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 500 transitions. Word has length 463 [2023-12-16 11:03:58,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:03:58,287 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 500 transitions. [2023-12-16 11:03:58,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-16 11:03:58,288 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 500 transitions. [2023-12-16 11:03:58,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2023-12-16 11:03:58,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:03:58,291 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:03:58,312 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 11:03:58,512 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 11:03:58,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:03:58,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:03:58,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1230578723, now seen corresponding path program 1 times [2023-12-16 11:03:58,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:03:58,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225785106] [2023-12-16 11:03:58,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:03:58,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:03:58,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:03:58,515 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 11:03:58,517 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 11:03:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:03:59,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 11:03:59,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:04:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 5619 proven. 93 refuted. 0 times theorem prover too weak. 5688 trivial. 0 not checked. [2023-12-16 11:04:01,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:04:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-16 11:04:01,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:04:01,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225785106] [2023-12-16 11:04:01,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225785106] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 11:04:01,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:04:01,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2023-12-16 11:04:01,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138389072] [2023-12-16 11:04:01,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:04:01,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 11:04:01,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:04:01,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 11:04:01,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-12-16 11:04:01,851 INFO L87 Difference]: Start difference. First operand 293 states and 500 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-16 11:04:13,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:04:13,342 INFO L93 Difference]: Finished difference Result 2172 states and 3683 transitions. [2023-12-16 11:04:13,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 11:04:13,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) Word has length 463 [2023-12-16 11:04:13,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:04:13,353 INFO L225 Difference]: With dead ends: 2172 [2023-12-16 11:04:13,353 INFO L226 Difference]: Without dead ends: 1880 [2023-12-16 11:04:13,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-16 11:04:13,355 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1688 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:04:13,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 1683 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [689 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2023-12-16 11:04:13,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-12-16 11:04:13,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1070. [2023-12-16 11:04:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 703 states have (on average 1.597439544807966) internal successors, (1123), 709 states have internal predecessors, (1123), 358 states have call successors, (358), 8 states have call predecessors, (358), 8 states have return successors, (358), 352 states have call predecessors, (358), 358 states have call successors, (358) [2023-12-16 11:04:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1839 transitions. [2023-12-16 11:04:13,447 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1839 transitions. Word has length 463 [2023-12-16 11:04:13,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:04:13,450 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1839 transitions. [2023-12-16 11:04:13,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 2 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 2 states have call predecessors, (76), 2 states have call successors, (76) [2023-12-16 11:04:13,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1839 transitions. [2023-12-16 11:04:13,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2023-12-16 11:04:13,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:04:13,456 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:04:13,494 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 [2023-12-16 11:04:13,676 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 11:04:13,677 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:04:13,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:04:13,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1653280549, now seen corresponding path program 1 times [2023-12-16 11:04:13,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:04:13,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441623465] [2023-12-16 11:04:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:04:13,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:04:13,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:04:13,681 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 11:04:13,685 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 11:04:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:04:14,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:04:14,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:04:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-16 11:04:15,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:04:15,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:04:15,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441623465] [2023-12-16 11:04:15,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441623465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:04:15,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 11:04:15,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 11:04:15,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216196478] [2023-12-16 11:04:15,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:04:15,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 11:04:15,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:04:15,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 11:04:15,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 11:04:15,476 INFO L87 Difference]: Start difference. First operand 1070 states and 1839 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-16 11:04:18,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 11:04:22,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:04:22,194 INFO L93 Difference]: Finished difference Result 5187 states and 8874 transitions. [2023-12-16 11:04:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 11:04:22,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 463 [2023-12-16 11:04:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:04:22,213 INFO L225 Difference]: With dead ends: 5187 [2023-12-16 11:04:22,214 INFO L226 Difference]: Without dead ends: 4118 [2023-12-16 11:04:22,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-16 11:04:22,220 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 810 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-12-16 11:04:22,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1227 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-12-16 11:04:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2023-12-16 11:04:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 4053. [2023-12-16 11:04:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4053 states, 2582 states have (on average 1.5546088303640588) internal successors, (4014), 2609 states have internal predecessors, (4014), 1436 states have call successors, (1436), 34 states have call predecessors, (1436), 34 states have return successors, (1436), 1409 states have call predecessors, (1436), 1436 states have call successors, (1436) [2023-12-16 11:04:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4053 states to 4053 states and 6886 transitions. [2023-12-16 11:04:22,548 INFO L78 Accepts]: Start accepts. Automaton has 4053 states and 6886 transitions. Word has length 463 [2023-12-16 11:04:22,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:04:22,549 INFO L495 AbstractCegarLoop]: Abstraction has 4053 states and 6886 transitions. [2023-12-16 11:04:22,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-16 11:04:22,549 INFO L276 IsEmpty]: Start isEmpty. Operand 4053 states and 6886 transitions. [2023-12-16 11:04:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2023-12-16 11:04:22,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:04:22,555 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:04:22,579 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 11:04:22,777 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 11:04:22,778 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:04:22,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:04:22,778 INFO L85 PathProgramCache]: Analyzing trace with hash -340864157, now seen corresponding path program 1 times [2023-12-16 11:04:22,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:04:22,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645921999] [2023-12-16 11:04:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:04:22,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:04:22,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:04:22,793 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 11:04:22,794 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 11:04:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:04:23,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:04:23,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:04:24,214 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 4905 proven. 156 refuted. 0 times theorem prover too weak. 6339 trivial. 0 not checked. [2023-12-16 11:04:24,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:04:24,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:04:24,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645921999] [2023-12-16 11:04:24,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645921999] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:04:24,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1712987645] [2023-12-16 11:04:24,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:04:24,348 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:04:24,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:04:24,349 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:04:24,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-16 11:04:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:04:26,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 11:04:26,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:04:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11400 trivial. 0 not checked. [2023-12-16 11:04:26,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 11:04:26,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1712987645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 11:04:26,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 11:04:26,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-16 11:04:26,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716155033] [2023-12-16 11:04:26,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 11:04:26,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 11:04:26,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:04:26,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 11:04:26,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:04:26,410 INFO L87 Difference]: Start difference. First operand 4053 states and 6886 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-16 11:04:27,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:04:27,943 INFO L93 Difference]: Finished difference Result 11947 states and 20314 transitions. [2023-12-16 11:04:27,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 11:04:27,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) Word has length 463 [2023-12-16 11:04:27,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:04:27,976 INFO L225 Difference]: With dead ends: 11947 [2023-12-16 11:04:27,977 INFO L226 Difference]: Without dead ends: 7984 [2023-12-16 11:04:27,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 961 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 11:04:27,989 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 310 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 11:04:27,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 918 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 11:04:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7984 states. [2023-12-16 11:04:28,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7984 to 7982. [2023-12-16 11:04:28,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7982 states, 5095 states have (on average 1.543277723258096) internal successors, (7863), 5148 states have internal predecessors, (7863), 2820 states have call successors, (2820), 66 states have call predecessors, (2820), 66 states have return successors, (2820), 2767 states have call predecessors, (2820), 2820 states have call successors, (2820) [2023-12-16 11:04:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7982 states to 7982 states and 13503 transitions. [2023-12-16 11:04:28,536 INFO L78 Accepts]: Start accepts. Automaton has 7982 states and 13503 transitions. Word has length 463 [2023-12-16 11:04:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:04:28,536 INFO L495 AbstractCegarLoop]: Abstraction has 7982 states and 13503 transitions. [2023-12-16 11:04:28,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (76), 1 states have call predecessors, (76), 1 states have return successors, (76), 1 states have call predecessors, (76), 1 states have call successors, (76) [2023-12-16 11:04:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 7982 states and 13503 transitions. [2023-12-16 11:04:28,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2023-12-16 11:04:28,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:04:28,541 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:04:28,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-16 11:04:28,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 11:04:28,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 11:04:28,957 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:04:28,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:04:28,957 INFO L85 PathProgramCache]: Analyzing trace with hash -283605855, now seen corresponding path program 1 times [2023-12-16 11:04:28,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:04:28,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071332122] [2023-12-16 11:04:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:04:28,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:04:28,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:04:28,959 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) [2023-12-16 11:04:28,963 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 [2023-12-16 11:04:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:04:29,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 11:04:29,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:04:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 4905 proven. 156 refuted. 0 times theorem prover too weak. 6339 trivial. 0 not checked. [2023-12-16 11:04:30,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:04:30,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 11:04:30,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071332122] [2023-12-16 11:04:30,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071332122] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 11:04:30,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1963409808] [2023-12-16 11:04:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:04:30,177 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 11:04:30,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 11:04:30,186 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 11:04:30,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-16 11:04:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:04:32,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 11:04:32,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 11:04:32,434 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 1615 proven. 15 refuted. 0 times theorem prover too weak. 9770 trivial. 0 not checked. [2023-12-16 11:04:32,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 11:04:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 11400 backedges. 210 proven. 15 refuted. 0 times theorem prover too weak. 11175 trivial. 0 not checked. [2023-12-16 11:04:32,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1963409808] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 11:04:32,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 11:04:32,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2023-12-16 11:04:32,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586571724] [2023-12-16 11:04:32,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 11:04:32,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 11:04:32,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 11:04:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 11:04:32,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-16 11:04:32,752 INFO L87 Difference]: Start difference. First operand 7982 states and 13503 transitions. Second operand has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 4 states have call successors, (133), 3 states have call predecessors, (133), 5 states have return successors, (135), 4 states have call predecessors, (135), 4 states have call successors, (135) [2023-12-16 11:04:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 11:04:37,567 INFO L93 Difference]: Finished difference Result 27362 states and 44925 transitions. [2023-12-16 11:04:37,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-16 11:04:37,570 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 4 states have call successors, (133), 3 states have call predecessors, (133), 5 states have return successors, (135), 4 states have call predecessors, (135), 4 states have call successors, (135) Word has length 463 [2023-12-16 11:04:37,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 11:04:37,649 INFO L225 Difference]: With dead ends: 27362 [2023-12-16 11:04:37,649 INFO L226 Difference]: Without dead ends: 19470 [2023-12-16 11:04:37,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1452 GetRequests, 1421 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=733, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 11:04:37,676 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 1095 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-16 11:04:37,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 759 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-16 11:04:37,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19470 states. [2023-12-16 11:04:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19470 to 14726. [2023-12-16 11:04:38,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14726 states, 9842 states have (on average 1.5232676285307865) internal successors, (14992), 9959 states have internal predecessors, (14992), 4612 states have call successors, (4612), 271 states have call predecessors, (4612), 271 states have return successors, (4612), 4495 states have call predecessors, (4612), 4612 states have call successors, (4612) [2023-12-16 11:04:39,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14726 states to 14726 states and 24216 transitions. [2023-12-16 11:04:39,026 INFO L78 Accepts]: Start accepts. Automaton has 14726 states and 24216 transitions. Word has length 463 [2023-12-16 11:04:39,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 11:04:39,027 INFO L495 AbstractCegarLoop]: Abstraction has 14726 states and 24216 transitions. [2023-12-16 11:04:39,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 4 states have call successors, (133), 3 states have call predecessors, (133), 5 states have return successors, (135), 4 states have call predecessors, (135), 4 states have call successors, (135) [2023-12-16 11:04:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 14726 states and 24216 transitions. [2023-12-16 11:04:39,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2023-12-16 11:04:39,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 11:04:39,036 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:04:39,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-16 11:04:39,276 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 [2023-12-16 11:04:39,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-16 11:04:39,453 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 11:04:39,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 11:04:39,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2039445168, now seen corresponding path program 1 times [2023-12-16 11:04:39,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 11:04:39,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147960977] [2023-12-16 11:04:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 11:04:39,454 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:04:39,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 11:04:39,455 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 11:04:39,456 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 (10)] Waiting until timeout for monitored process [2023-12-16 11:04:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 11:04:40,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 11:04:40,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 11:04:55,085 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 11:04:55,106 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 (10)] Ended with exit code 0 [2023-12-16 11:04:55,112 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:04:55,112 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 (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 11:04:55,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 11:04:55,288 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 466 with TraceHistMax 76,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-4-2-2-1 context. [2023-12-16 11:04:55,292 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-16 11:04:55,293 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 11:04:55,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 11:04:55 BoogieIcfgContainer [2023-12-16 11:04:55,295 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 11:04:55,295 INFO L158 Benchmark]: Toolchain (without parser) took 67894.10ms. Allocated memory was 267.4MB in the beginning and 660.6MB in the end (delta: 393.2MB). Free memory was 222.4MB in the beginning and 469.6MB in the end (delta: -247.1MB). Peak memory consumption was 147.8MB. Max. memory is 8.0GB. [2023-12-16 11:04:55,295 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 202.4MB. Free memory is still 150.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 11:04:55,296 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.09ms. Allocated memory is still 267.4MB. Free memory was 222.4MB in the beginning and 199.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-16 11:04:55,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.12ms. Allocated memory is still 267.4MB. Free memory was 199.4MB in the beginning and 195.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 11:04:55,296 INFO L158 Benchmark]: Boogie Preprocessor took 69.38ms. Allocated memory is still 267.4MB. Free memory was 195.2MB in the beginning and 188.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-16 11:04:55,296 INFO L158 Benchmark]: RCFGBuilder took 5083.16ms. Allocated memory is still 267.4MB. Free memory was 188.9MB in the beginning and 212.1MB in the end (delta: -23.2MB). Peak memory consumption was 41.3MB. Max. memory is 8.0GB. [2023-12-16 11:04:55,296 INFO L158 Benchmark]: TraceAbstraction took 62331.19ms. Allocated memory was 267.4MB in the beginning and 660.6MB in the end (delta: 393.2MB). Free memory was 211.0MB in the beginning and 469.6MB in the end (delta: -258.5MB). Peak memory consumption was 134.8MB. Max. memory is 8.0GB. [2023-12-16 11:04:55,297 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 202.4MB. Free memory is still 150.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 339.09ms. Allocated memory is still 267.4MB. Free memory was 222.4MB in the beginning and 199.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 67.12ms. Allocated memory is still 267.4MB. Free memory was 199.4MB in the beginning and 195.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 69.38ms. Allocated memory is still 267.4MB. Free memory was 195.2MB in the beginning and 188.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 5083.16ms. Allocated memory is still 267.4MB. Free memory was 188.9MB in the beginning and 212.1MB in the end (delta: -23.2MB). Peak memory consumption was 41.3MB. Max. memory is 8.0GB. * TraceAbstraction took 62331.19ms. Allocated memory was 267.4MB in the beginning and 660.6MB in the end (delta: 393.2MB). Free memory was 211.0MB in the beginning and 469.6MB in the end (delta: -258.5MB). Peak memory consumption was 134.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 466 with TraceHistMax 76,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-4-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 189 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.3s, OverallIterations: 7, TraceHistogramMax: 76, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 27.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4074 SdHoareTripleChecker+Valid, 24.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4072 mSDsluCounter, 5647 SdHoareTripleChecker+Invalid, 23.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3091 mSDsCounter, 1460 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2286 IncrementalHoareTripleChecker+Invalid, 3746 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1460 mSolverCounterUnsat, 2556 mSDtfsCounter, 2286 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4737 GetRequests, 4680 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14726occurred in iteration=6, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 5624 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 7.6s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 3704 NumberOfCodeBlocks, 3704 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 4620 ConstructedInterpolants, 17 QuantifiedInterpolants, 11703 SizeOfPredicates, 22 NumberOfNonLiveVariables, 5871 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 113565/114000 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown