/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-96.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 10:22:06,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 10:22:06,739 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 10:22:06,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 10:22:06,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 10:22:06,764 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 10:22:06,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 10:22:06,765 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 10:22:06,765 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 10:22:06,768 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 10:22:06,768 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 10:22:06,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 10:22:06,769 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 10:22:06,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 10:22:06,770 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 10:22:06,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 10:22:06,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 10:22:06,771 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 10:22:06,771 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 10:22:06,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 10:22:06,771 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 10:22:06,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 10:22:06,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 10:22:06,772 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 10:22:06,772 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 10:22:06,772 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 10:22:06,772 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 10:22:06,773 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 10:22:06,773 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 10:22:06,773 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 10:22:06,774 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 10:22:06,774 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 10:22:06,774 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 10:22:06,774 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 10:22:06,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 10:22:06,774 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 10:22:06,774 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 10:22:06,775 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 10:22:06,775 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 10:22:06,775 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 10:22:06,775 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 10:22:06,775 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 10:22:06,775 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 10:22:06,775 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 10:22:06,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 10:22:06,776 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 10:22:06,776 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 10:22:06,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 10:22:06,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 10:22:06,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 10:22:06,991 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 10:22:06,992 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 10:22:06,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-96.i [2023-12-23 10:22:07,976 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 10:22:08,163 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 10:22:08,163 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-96.i [2023-12-23 10:22:08,174 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/107985a7a/939a63a3ca2548acad242c89e9f6230d/FLAG372551311 [2023-12-23 10:22:08,186 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/107985a7a/939a63a3ca2548acad242c89e9f6230d [2023-12-23 10:22:08,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 10:22:08,190 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 10:22:08,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 10:22:08,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 10:22:08,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 10:22:08,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e26ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08, skipping insertion in model container [2023-12-23 10:22:08,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,225 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 10:22:08,330 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-96.i[919,932] [2023-12-23 10:22:08,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 10:22:08,397 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 10:22:08,404 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-96.i[919,932] [2023-12-23 10:22:08,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 10:22:08,458 INFO L206 MainTranslator]: Completed translation [2023-12-23 10:22:08,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08 WrapperNode [2023-12-23 10:22:08,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 10:22:08,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 10:22:08,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 10:22:08,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 10:22:08,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,489 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,510 INFO L138 Inliner]: procedures = 27, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 227 [2023-12-23 10:22:08,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 10:22:08,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 10:22:08,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 10:22:08,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 10:22:08,521 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,526 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,535 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 10:22:08,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,548 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,551 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 10:22:08,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 10:22:08,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 10:22:08,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 10:22:08,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08" (1/1) ... [2023-12-23 10:22:08,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 10:22:08,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 10:22:08,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-23 10:22:08,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 10:22:08,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 10:22:08,619 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 10:22:08,619 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 10:22:08,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 10:22:08,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-23 10:22:08,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 10:22:08,705 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 10:22:08,707 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 10:22:10,242 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 10:22:10,283 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 10:22:10,283 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 10:22:10,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:22:10 BoogieIcfgContainer [2023-12-23 10:22:10,283 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 10:22:10,285 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 10:22:10,285 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 10:22:10,287 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 10:22:10,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:22:08" (1/3) ... [2023-12-23 10:22:10,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ee171f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:22:10, skipping insertion in model container [2023-12-23 10:22:10,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:22:08" (2/3) ... [2023-12-23 10:22:10,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ee171f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:22:10, skipping insertion in model container [2023-12-23 10:22:10,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:22:10" (3/3) ... [2023-12-23 10:22:10,292 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-96.i [2023-12-23 10:22:10,303 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 10:22:10,303 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 10:22:10,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 10:22:10,336 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;@53d90f46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 10:22:10,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 10:22:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 56 states have internal predecessors, (78), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-23 10:22:10,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-23 10:22:10,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 10:22:10,351 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 10:22:10,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 10:22:10,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 10:22:10,355 INFO L85 PathProgramCache]: Analyzing trace with hash -749488843, now seen corresponding path program 1 times [2023-12-23 10:22:10,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 10:22:10,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916267771] [2023-12-23 10:22:10,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:22:10,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:22:10,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 10:22:10,365 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 10:22:10,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 10:22:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:22:10,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 10:22:10,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 10:22:11,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-23 10:22:11,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 10:22:11,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 10:22:11,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916267771] [2023-12-23 10:22:11,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916267771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 10:22:11,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 10:22:11,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 10:22:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595044216] [2023-12-23 10:22:11,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 10:22:11,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 10:22:11,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 10:22:11,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 10:22:11,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 10:22:11,328 INFO L87 Difference]: Start difference. First operand has 102 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 56 states have internal predecessors, (78), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-23 10:22:12,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 10:22:14,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 10:22:14,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 10:22:14,676 INFO L93 Difference]: Finished difference Result 295 states and 573 transitions. [2023-12-23 10:22:14,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 10:22:14,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 262 [2023-12-23 10:22:14,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 10:22:14,707 INFO L225 Difference]: With dead ends: 295 [2023-12-23 10:22:14,707 INFO L226 Difference]: Without dead ends: 194 [2023-12-23 10:22:14,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-23 10:22:14,717 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 71 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-23 10:22:14,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 437 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-23 10:22:14,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-23 10:22:14,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 170. [2023-12-23 10:22:14,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 79 states have internal predecessors, (93), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-23 10:22:14,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 269 transitions. [2023-12-23 10:22:14,800 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 269 transitions. Word has length 262 [2023-12-23 10:22:14,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 10:22:14,804 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 269 transitions. [2023-12-23 10:22:14,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-23 10:22:14,804 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 269 transitions. [2023-12-23 10:22:14,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-23 10:22:14,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 10:22:14,808 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 10:22:14,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-23 10:22:15,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:22:15,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 10:22:15,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 10:22:15,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1957130551, now seen corresponding path program 1 times [2023-12-23 10:22:15,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 10:22:15,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068922020] [2023-12-23 10:22:15,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:22:15,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:22:15,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 10:22:15,014 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 10:22:15,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 10:22:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:22:15,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 10:22:15,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 10:22:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2067 proven. 261 refuted. 0 times theorem prover too weak. 1456 trivial. 0 not checked. [2023-12-23 10:22:16,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 10:22:16,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 10:22:16,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068922020] [2023-12-23 10:22:16,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068922020] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 10:22:16,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [462211499] [2023-12-23 10:22:16,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:22:16,545 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 10:22:16,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 10:22:16,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 10:22:16,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-23 10:22:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:22:17,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 10:22:17,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 10:22:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1383 proven. 99 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2023-12-23 10:22:17,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 10:22:17,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [462211499] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 10:22:17,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 10:22:17,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 13 [2023-12-23 10:22:17,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012244030] [2023-12-23 10:22:17,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 10:22:17,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 10:22:17,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 10:22:17,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 10:22:17,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-12-23 10:22:17,634 INFO L87 Difference]: Start difference. First operand 170 states and 269 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (76), 4 states have call predecessors, (76), 7 states have return successors, (77), 4 states have call predecessors, (77), 4 states have call successors, (77) [2023-12-23 10:22:20,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 10:22:21,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 10:22:21,254 INFO L93 Difference]: Finished difference Result 410 states and 611 transitions. [2023-12-23 10:22:21,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-23 10:22:21,254 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (76), 4 states have call predecessors, (76), 7 states have return successors, (77), 4 states have call predecessors, (77), 4 states have call successors, (77) Word has length 262 [2023-12-23 10:22:21,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 10:22:21,257 INFO L225 Difference]: With dead ends: 410 [2023-12-23 10:22:21,257 INFO L226 Difference]: Without dead ends: 314 [2023-12-23 10:22:21,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=400, Invalid=1082, Unknown=0, NotChecked=0, Total=1482 [2023-12-23 10:22:21,260 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 212 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-23 10:22:21,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 614 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-23 10:22:21,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-23 10:22:21,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 295. [2023-12-23 10:22:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 149 states have (on average 1.1409395973154361) internal successors, (170), 150 states have internal predecessors, (170), 132 states have call successors, (132), 13 states have call predecessors, (132), 13 states have return successors, (132), 131 states have call predecessors, (132), 132 states have call successors, (132) [2023-12-23 10:22:21,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 434 transitions. [2023-12-23 10:22:21,306 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 434 transitions. Word has length 262 [2023-12-23 10:22:21,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 10:22:21,310 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 434 transitions. [2023-12-23 10:22:21,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 4 states have call successors, (76), 4 states have call predecessors, (76), 7 states have return successors, (77), 4 states have call predecessors, (77), 4 states have call successors, (77) [2023-12-23 10:22:21,310 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 434 transitions. [2023-12-23 10:22:21,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-23 10:22:21,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 10:22:21,315 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 10:22:21,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-12-23 10:22:21,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 10:22:21,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:22:21,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 10:22:21,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 10:22:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash -474432893, now seen corresponding path program 1 times [2023-12-23 10:22:21,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 10:22:21,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785568793] [2023-12-23 10:22:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:22:21,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:22:21,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 10:22:21,727 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 10:22:21,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 10:22:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:22:21,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 10:22:21,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 10:22:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2023-12-23 10:22:22,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 10:22:22,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 10:22:22,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785568793] [2023-12-23 10:22:22,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785568793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 10:22:22,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 10:22:22,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 10:22:22,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952044193] [2023-12-23 10:22:22,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 10:22:22,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 10:22:22,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 10:22:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 10:22:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 10:22:22,306 INFO L87 Difference]: Start difference. First operand 295 states and 434 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-23 10:22:24,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 10:22:25,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 10:22:25,371 INFO L93 Difference]: Finished difference Result 709 states and 1042 transitions. [2023-12-23 10:22:25,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 10:22:25,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 263 [2023-12-23 10:22:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 10:22:25,377 INFO L225 Difference]: With dead ends: 709 [2023-12-23 10:22:25,377 INFO L226 Difference]: Without dead ends: 500 [2023-12-23 10:22:25,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 10:22:25,383 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 21 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-23 10:22:25,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 267 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-23 10:22:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-23 10:22:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 498. [2023-12-23 10:22:25,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 255 states have (on average 1.1333333333333333) internal successors, (289), 257 states have internal predecessors, (289), 220 states have call successors, (220), 22 states have call predecessors, (220), 22 states have return successors, (220), 218 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-23 10:22:25,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 729 transitions. [2023-12-23 10:22:25,441 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 729 transitions. Word has length 263 [2023-12-23 10:22:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 10:22:25,441 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 729 transitions. [2023-12-23 10:22:25,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2023-12-23 10:22:25,442 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 729 transitions. [2023-12-23 10:22:25,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-23 10:22:25,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 10:22:25,444 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 10:22:25,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-23 10:22:25,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:22:25,653 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 10:22:25,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 10:22:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1073927755, now seen corresponding path program 1 times [2023-12-23 10:22:25,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 10:22:25,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627975157] [2023-12-23 10:22:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:22:25,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:22:25,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 10:22:25,655 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 10:22:25,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 10:22:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:22:25,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 10:22:25,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 10:22:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1929 proven. 60 refuted. 0 times theorem prover too weak. 1795 trivial. 0 not checked. [2023-12-23 10:22:26,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 10:22:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 69 proven. 60 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2023-12-23 10:22:26,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 10:22:26,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627975157] [2023-12-23 10:22:26,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627975157] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 10:22:26,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 10:22:26,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-23 10:22:26,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895684717] [2023-12-23 10:22:26,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 10:22:26,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-23 10:22:26,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 10:22:26,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-23 10:22:26,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-23 10:22:26,354 INFO L87 Difference]: Start difference. First operand 498 states and 729 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-23 10:22:28,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 10:22:28,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 10:22:28,929 INFO L93 Difference]: Finished difference Result 1832 states and 2616 transitions. [2023-12-23 10:22:28,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-23 10:22:28,933 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 263 [2023-12-23 10:22:28,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 10:22:28,943 INFO L225 Difference]: With dead ends: 1832 [2023-12-23 10:22:28,944 INFO L226 Difference]: Without dead ends: 1420 [2023-12-23 10:22:28,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 518 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2023-12-23 10:22:28,951 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 246 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-23 10:22:28,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 438 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-23 10:22:28,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2023-12-23 10:22:29,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 544. [2023-12-23 10:22:29,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 296 states have (on average 1.135135135135135) internal successors, (336), 298 states have internal predecessors, (336), 220 states have call successors, (220), 27 states have call predecessors, (220), 27 states have return successors, (220), 218 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-23 10:22:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 776 transitions. [2023-12-23 10:22:29,017 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 776 transitions. Word has length 263 [2023-12-23 10:22:29,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 10:22:29,017 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 776 transitions. [2023-12-23 10:22:29,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-23 10:22:29,018 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 776 transitions. [2023-12-23 10:22:29,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-23 10:22:29,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 10:22:29,020 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 10:22:29,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-23 10:22:29,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:22:29,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 10:22:29,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 10:22:29,231 INFO L85 PathProgramCache]: Analyzing trace with hash 753923979, now seen corresponding path program 1 times [2023-12-23 10:22:29,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 10:22:29,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741314055] [2023-12-23 10:22:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:22:29,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:22:29,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 10:22:29,234 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 10:22:29,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-23 10:22:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:22:29,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-23 10:22:29,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 10:22:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2040 proven. 357 refuted. 0 times theorem prover too weak. 1387 trivial. 0 not checked. [2023-12-23 10:22:31,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 10:22:31,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 10:22:31,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741314055] [2023-12-23 10:22:31,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741314055] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 10:22:31,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [747409590] [2023-12-23 10:22:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:22:31,706 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 10:22:31,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 10:22:31,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 10:22:31,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-23 10:22:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:22:32,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-23 10:22:32,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 10:22:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1339 proven. 393 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2023-12-23 10:22:36,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 10:22:37,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [747409590] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 10:22:37,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 10:22:37,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2023-12-23 10:22:37,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574870442] [2023-12-23 10:22:37,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 10:22:37,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-23 10:22:37,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 10:22:37,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-23 10:22:37,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=947, Unknown=0, NotChecked=0, Total=1190 [2023-12-23 10:22:37,262 INFO L87 Difference]: Start difference. First operand 544 states and 776 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 24 states have internal predecessors, (114), 9 states have call successors, (81), 9 states have call predecessors, (81), 14 states have return successors, (82), 9 states have call predecessors, (82), 9 states have call successors, (82) [2023-12-23 10:22:41,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:22:46,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:22:55,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:22:58,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:02,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:06,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:09,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:12,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:13,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:17,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:20,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:23,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:27,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:30,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:33,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:34,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:38,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:42,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:45,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:49,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:52,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-23 10:23:55,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 10:23:55,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 10:23:55,258 INFO L93 Difference]: Finished difference Result 1069 states and 1486 transitions. [2023-12-23 10:23:55,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-23 10:23:55,258 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 24 states have internal predecessors, (114), 9 states have call successors, (81), 9 states have call predecessors, (81), 14 states have return successors, (82), 9 states have call predecessors, (82), 9 states have call successors, (82) Word has length 263 [2023-12-23 10:23:55,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 10:23:55,261 INFO L225 Difference]: With dead ends: 1069 [2023-12-23 10:23:55,261 INFO L226 Difference]: Without dead ends: 615 [2023-12-23 10:23:55,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 711 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=546, Invalid=1707, Unknown=3, NotChecked=0, Total=2256 [2023-12-23 10:23:55,264 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 201 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 96 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 68.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.6s IncrementalHoareTripleChecker+Time [2023-12-23 10:23:55,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 893 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1295 Invalid, 17 Unknown, 0 Unchecked, 68.6s Time] [2023-12-23 10:23:55,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-12-23 10:23:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 587. [2023-12-23 10:23:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 329 states have (on average 1.115501519756839) internal successors, (367), 331 states have internal predecessors, (367), 220 states have call successors, (220), 37 states have call predecessors, (220), 37 states have return successors, (220), 218 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-23 10:23:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 807 transitions. [2023-12-23 10:23:55,337 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 807 transitions. Word has length 263 [2023-12-23 10:23:55,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 10:23:55,337 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 807 transitions. [2023-12-23 10:23:55,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 24 states have internal predecessors, (114), 9 states have call successors, (81), 9 states have call predecessors, (81), 14 states have return successors, (82), 9 states have call predecessors, (82), 9 states have call successors, (82) [2023-12-23 10:23:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 807 transitions. [2023-12-23 10:23:55,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-23 10:23:55,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 10:23:55,339 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 10:23:55,354 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 (7)] Forceful destruction successful, exit code 0 [2023-12-23 10:23:55,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-23 10:23:55,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 10:23:55,745 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 10:23:55,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 10:23:55,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1751303576, now seen corresponding path program 1 times [2023-12-23 10:23:55,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 10:23:55,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309609039] [2023-12-23 10:23:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 10:23:55,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 10:23:55,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 10:23:55,747 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 10:23:55,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-23 10:23:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 10:23:56,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-23 10:23:56,076 INFO L285 TraceCheckSpWp]: Computing forward predicates...