/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-96.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 03:09:32,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 03:09:32,512 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 03:09:32,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 03:09:32,515 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 03:09:32,530 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 03:09:32,531 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 03:09:32,531 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 03:09:32,531 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 03:09:32,532 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 03:09:32,532 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 03:09:32,532 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 03:09:32,532 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 03:09:32,533 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 03:09:32,533 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 03:09:32,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 03:09:32,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 03:09:32,534 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 03:09:32,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 03:09:32,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 03:09:32,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 03:09:32,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 03:09:32,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 03:09:32,538 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 03:09:32,538 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 03:09:32,538 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 03:09:32,538 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 03:09:32,538 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 03:09:32,539 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 03:09:32,539 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 03:09:32,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 03:09:32,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 03:09:32,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 03:09:32,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 03:09:32,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 03:09:32,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 03:09:32,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 03:09:32,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 03:09:32,540 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 03:09:32,540 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 03:09:32,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 03:09:32,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 03:09:32,542 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 03:09:32,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 03:09:32,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 03:09:32,543 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 03:09:32,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 03:09:32,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 03:09:32,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 03:09:32,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 03:09:32,783 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 03:09:32,783 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 03:09:32,785 INFO L431 ainManager$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-96.i [2023-12-23 03:09:33,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 03:09:34,094 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 03:09:34,095 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-96.i [2023-12-23 03:09:34,107 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f6c723c/a29a6c856cbb4c4382bc79f068619bb5/FLAG3eca271e8 [2023-12-23 03:09:34,117 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f6c723c/a29a6c856cbb4c4382bc79f068619bb5 [2023-12-23 03:09:34,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 03:09:34,120 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 03:09:34,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 03:09:34,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 03:09:34,126 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 03:09:34,126 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,127 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14343321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34, skipping insertion in model container [2023-12-23 03:09:34,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,164 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 03:09:34,281 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-96.i[916,929] [2023-12-23 03:09:34,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 03:09:34,406 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 03:09:34,420 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-96.i[916,929] [2023-12-23 03:09:34,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 03:09:34,530 INFO L206 MainTranslator]: Completed translation [2023-12-23 03:09:34,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34 WrapperNode [2023-12-23 03:09:34,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 03:09:34,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 03:09:34,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 03:09:34,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 03:09:34,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,608 INFO L138 Inliner]: procedures = 27, calls = 117, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 513 [2023-12-23 03:09:34,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 03:09:34,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 03:09:34,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 03:09:34,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 03:09:34,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,633 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,658 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 03:09:34,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,672 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,680 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 03:09:34,701 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 03:09:34,701 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 03:09:34,701 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 03:09:34,702 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34" (1/1) ... [2023-12-23 03:09:34,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 03:09:34,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 03:09:34,730 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 03:09:34,764 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 03:09:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 03:09:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 03:09:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 03:09:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 03:09:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 03:09:34,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 03:09:34,905 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 03:09:34,906 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 03:09:41,070 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 03:09:41,115 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 03:09:41,115 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 03:09:41,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:09:41 BoogieIcfgContainer [2023-12-23 03:09:41,116 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 03:09:41,117 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 03:09:41,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 03:09:41,119 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 03:09:41,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 03:09:34" (1/3) ... [2023-12-23 03:09:41,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ff9f8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:09:41, skipping insertion in model container [2023-12-23 03:09:41,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 03:09:34" (2/3) ... [2023-12-23 03:09:41,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ff9f8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 03:09:41, skipping insertion in model container [2023-12-23 03:09:41,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 03:09:41" (3/3) ... [2023-12-23 03:09:41,121 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-96.i [2023-12-23 03:09:41,136 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 03:09:41,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 03:09:41,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 03:09:41,189 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;@21d4e9e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 03:09:41,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 03:09:41,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 237 states, 130 states have (on average 1.5) internal successors, (195), 131 states have internal predecessors, (195), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-23 03:09:41,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2023-12-23 03:09:41,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:09:41,234 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:41,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:09:41,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:09:41,239 INFO L85 PathProgramCache]: Analyzing trace with hash 760916568, now seen corresponding path program 1 times [2023-12-23 03:09:41,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:09:41,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090330252] [2023-12-23 03:09:41,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:09:41,254 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 03:09:41,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:09:41,255 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 03:09:41,259 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 03:09:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:09:42,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 03:09:42,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:09:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 10766 proven. 0 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2023-12-23 03:09:42,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:09:42,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:09:42,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090330252] [2023-12-23 03:09:42,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090330252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:09:42,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 03:09:42,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 03:09:42,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604121259] [2023-12-23 03:09:42,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:09:42,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 03:09:42,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:09:42,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 03:09:42,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 03:09:42,322 INFO L87 Difference]: Start difference. First operand has 237 states, 130 states have (on average 1.5) internal successors, (195), 131 states have internal predecessors, (195), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-12-23 03:09:45,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:09:45,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:09:45,066 INFO L93 Difference]: Finished difference Result 467 states and 900 transitions. [2023-12-23 03:09:45,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 03:09:45,096 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 616 [2023-12-23 03:09:45,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:09:45,104 INFO L225 Difference]: With dead ends: 467 [2023-12-23 03:09:45,104 INFO L226 Difference]: Without dead ends: 231 [2023-12-23 03:09:45,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 03:09:45,114 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-23 03:09:45,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-23 03:09:45,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-23 03:09:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2023-12-23 03:09:45,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 125 states have (on average 1.416) internal successors, (177), 125 states have internal predecessors, (177), 104 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-23 03:09:45,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 385 transitions. [2023-12-23 03:09:45,185 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 385 transitions. Word has length 616 [2023-12-23 03:09:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:09:45,187 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 385 transitions. [2023-12-23 03:09:45,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2023-12-23 03:09:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 385 transitions. [2023-12-23 03:09:45,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2023-12-23 03:09:45,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:09:45,200 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:45,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-23 03:09:45,420 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 03:09:45,421 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:09:45,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:09:45,422 INFO L85 PathProgramCache]: Analyzing trace with hash -562575972, now seen corresponding path program 1 times [2023-12-23 03:09:45,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:09:45,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247027227] [2023-12-23 03:09:45,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:09:45,423 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 03:09:45,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:09:45,425 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 03:09:45,441 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 03:09:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:09:46,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 03:09:46,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:09:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 10785 proven. 162 refuted. 0 times theorem prover too weak. 10477 trivial. 0 not checked. [2023-12-23 03:09:46,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:09:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 147 proven. 162 refuted. 0 times theorem prover too weak. 21115 trivial. 0 not checked. [2023-12-23 03:09:47,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:09:47,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247027227] [2023-12-23 03:09:47,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247027227] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 03:09:47,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 03:09:47,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 03:09:47,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958611051] [2023-12-23 03:09:47,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 03:09:47,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 03:09:47,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:09:47,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 03:09:47,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 03:09:47,508 INFO L87 Difference]: Start difference. First operand 231 states and 385 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 2 states have call predecessors, (159), 2 states have call successors, (159) [2023-12-23 03:09:51,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:09:51,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:09:51,571 INFO L93 Difference]: Finished difference Result 466 states and 772 transitions. [2023-12-23 03:09:51,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 03:09:51,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 2 states have call predecessors, (159), 2 states have call successors, (159) Word has length 616 [2023-12-23 03:09:51,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:09:51,604 INFO L225 Difference]: With dead ends: 466 [2023-12-23 03:09:51,604 INFO L226 Difference]: Without dead ends: 236 [2023-12-23 03:09:51,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1234 GetRequests, 1224 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 03:09:51,607 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 184 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-23 03:09:51,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 584 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-23 03:09:51,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-23 03:09:51,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2023-12-23 03:09:51,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 127 states have (on average 1.3700787401574803) internal successors, (174), 127 states have internal predecessors, (174), 104 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2023-12-23 03:09:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 382 transitions. [2023-12-23 03:09:51,658 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 382 transitions. Word has length 616 [2023-12-23 03:09:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:09:51,661 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 382 transitions. [2023-12-23 03:09:51,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (158), 2 states have call predecessors, (158), 4 states have return successors, (159), 2 states have call predecessors, (159), 2 states have call successors, (159) [2023-12-23 03:09:51,662 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 382 transitions. [2023-12-23 03:09:51,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2023-12-23 03:09:51,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:09:51,670 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:51,709 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 03:09:51,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:09:51,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:09:51,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:09:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1680215586, now seen corresponding path program 1 times [2023-12-23 03:09:51,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:09:51,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483357882] [2023-12-23 03:09:51,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:09:51,895 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 03:09:51,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:09:51,896 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:09:51,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 03:09:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:09:52,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 03:09:52,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:09:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 10725 proven. 168 refuted. 0 times theorem prover too weak. 10531 trivial. 0 not checked. [2023-12-23 03:09:53,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:09:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 141 proven. 168 refuted. 0 times theorem prover too weak. 21115 trivial. 0 not checked. [2023-12-23 03:09:53,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:09:53,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483357882] [2023-12-23 03:09:53,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483357882] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 03:09:53,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 03:09:53,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 03:09:53,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899877854] [2023-12-23 03:09:53,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 03:09:53,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 03:09:53,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:09:53,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 03:09:53,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 03:09:53,907 INFO L87 Difference]: Start difference. First operand 234 states and 382 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 2 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 2 states have call predecessors, (161), 2 states have call successors, (161) [2023-12-23 03:09:56,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:09:57,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:09:57,377 INFO L93 Difference]: Finished difference Result 547 states and 889 transitions. [2023-12-23 03:09:57,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 03:09:57,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 2 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 2 states have call predecessors, (161), 2 states have call successors, (161) Word has length 617 [2023-12-23 03:09:57,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:09:57,381 INFO L225 Difference]: With dead ends: 547 [2023-12-23 03:09:57,381 INFO L226 Difference]: Without dead ends: 314 [2023-12-23 03:09:57,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1236 GetRequests, 1226 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 03:09:57,382 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 169 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-23 03:09:57,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 811 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-23 03:09:57,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-23 03:09:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 309. [2023-12-23 03:09:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 154 states have (on average 1.2857142857142858) internal successors, (198), 155 states have internal predecessors, (198), 151 states have call successors, (151), 3 states have call predecessors, (151), 3 states have return successors, (151), 150 states have call predecessors, (151), 151 states have call successors, (151) [2023-12-23 03:09:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 500 transitions. [2023-12-23 03:09:57,411 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 500 transitions. Word has length 617 [2023-12-23 03:09:57,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:09:57,412 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 500 transitions. [2023-12-23 03:09:57,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 2 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 2 states have call predecessors, (161), 2 states have call successors, (161) [2023-12-23 03:09:57,413 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 500 transitions. [2023-12-23 03:09:57,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-23 03:09:57,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:09:57,418 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:57,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-23 03:09:57,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 03:09:57,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:09:57,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:09:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash -488323519, now seen corresponding path program 1 times [2023-12-23 03:09:57,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:09:57,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424680711] [2023-12-23 03:09:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:09:57,631 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 03:09:57,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:09:57,633 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 03:09:57,635 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 03:09:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:09:58,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 03:09:58,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:09:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21424 trivial. 0 not checked. [2023-12-23 03:09:59,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 03:09:59,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:09:59,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424680711] [2023-12-23 03:09:59,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424680711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 03:09:59,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 03:09:59,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 03:09:59,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43187066] [2023-12-23 03:09:59,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 03:09:59,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 03:09:59,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:09:59,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 03:09:59,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-23 03:09:59,364 INFO L87 Difference]: Start difference. First operand 309 states and 500 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-23 03:10:01,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:10:03,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:10:03,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:10:03,474 INFO L93 Difference]: Finished difference Result 713 states and 1145 transitions. [2023-12-23 03:10:03,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 03:10:03,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) Word has length 618 [2023-12-23 03:10:03,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:10:03,504 INFO L225 Difference]: With dead ends: 713 [2023-12-23 03:10:03,504 INFO L226 Difference]: Without dead ends: 476 [2023-12-23 03:10:03,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 615 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 03:10:03,506 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 233 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-23 03:10:03,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1111 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-23 03:10:03,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2023-12-23 03:10:03,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 462. [2023-12-23 03:10:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 247 states have (on average 1.3319838056680162) internal successors, (329), 247 states have internal predecessors, (329), 208 states have call successors, (208), 6 states have call predecessors, (208), 6 states have return successors, (208), 208 states have call predecessors, (208), 208 states have call successors, (208) [2023-12-23 03:10:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 745 transitions. [2023-12-23 03:10:03,566 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 745 transitions. Word has length 618 [2023-12-23 03:10:03,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:10:03,568 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 745 transitions. [2023-12-23 03:10:03,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (104), 1 states have call predecessors, (104), 1 states have return successors, (104), 1 states have call predecessors, (104), 1 states have call successors, (104) [2023-12-23 03:10:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 745 transitions. [2023-12-23 03:10:03,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-23 03:10:03,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:10:03,573 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:03,598 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 03:10:03,788 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 03:10:03,789 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:10:03,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:10:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash 212741059, now seen corresponding path program 1 times [2023-12-23 03:10:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:10:03,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883536353] [2023-12-23 03:10:03,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:10:03,791 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 03:10:03,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:10:03,792 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 03:10:03,793 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 03:10:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:10:04,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-23 03:10:04,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:10:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 6087 proven. 801 refuted. 0 times theorem prover too weak. 14536 trivial. 0 not checked. [2023-12-23 03:10:09,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:10:09,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 03:10:09,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883536353] [2023-12-23 03:10:09,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883536353] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:10:09,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [180119860] [2023-12-23 03:10:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:10:09,725 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 03:10:09,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 03:10:09,784 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) [2023-12-23 03:10:09,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-23 03:10:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:10:12,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 03:10:12,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 03:10:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 21424 backedges. 3843 proven. 279 refuted. 0 times theorem prover too weak. 17302 trivial. 0 not checked. [2023-12-23 03:10:13,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 03:10:13,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [180119860] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 03:10:13,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 03:10:13,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 13 [2023-12-23 03:10:13,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033838202] [2023-12-23 03:10:13,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 03:10:13,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 03:10:13,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 03:10:13,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 03:10:13,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-12-23 03:10:13,816 INFO L87 Difference]: Start difference. First operand 462 states and 745 transitions. Second operand has 13 states, 13 states have (on average 15.923076923076923) internal successors, (207), 13 states have internal predecessors, (207), 4 states have call successors, (196), 4 states have call predecessors, (196), 7 states have return successors, (197), 4 states have call predecessors, (197), 4 states have call successors, (197) [2023-12-23 03:10:16,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:10:18,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:10:19,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 03:10:22,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 03:10:22,006 INFO L93 Difference]: Finished difference Result 986 states and 1547 transitions. [2023-12-23 03:10:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-23 03:10:22,007 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.923076923076923) internal successors, (207), 13 states have internal predecessors, (207), 4 states have call successors, (196), 4 states have call predecessors, (196), 7 states have return successors, (197), 4 states have call predecessors, (197), 4 states have call successors, (197) Word has length 618 [2023-12-23 03:10:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 03:10:22,011 INFO L225 Difference]: With dead ends: 986 [2023-12-23 03:10:22,011 INFO L226 Difference]: Without dead ends: 749 [2023-12-23 03:10:22,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1344 GetRequests, 1307 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=400, Invalid=1082, Unknown=0, NotChecked=0, Total=1482 [2023-12-23 03:10:22,013 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 390 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 2123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-23 03:10:22,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 2182 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-23 03:10:22,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2023-12-23 03:10:22,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 677. [2023-12-23 03:10:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 345 states have (on average 1.2405797101449276) internal successors, (428), 346 states have internal predecessors, (428), 312 states have call successors, (312), 19 states have call predecessors, (312), 19 states have return successors, (312), 311 states have call predecessors, (312), 312 states have call successors, (312) [2023-12-23 03:10:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1052 transitions. [2023-12-23 03:10:22,069 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1052 transitions. Word has length 618 [2023-12-23 03:10:22,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 03:10:22,070 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1052 transitions. [2023-12-23 03:10:22,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.923076923076923) internal successors, (207), 13 states have internal predecessors, (207), 4 states have call successors, (196), 4 states have call predecessors, (196), 7 states have return successors, (197), 4 states have call predecessors, (197), 4 states have call successors, (197) [2023-12-23 03:10:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1052 transitions. [2023-12-23 03:10:22,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2023-12-23 03:10:22,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 03:10:22,074 INFO L195 NwaCegarLoop]: trace histogram [104, 104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:22,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-23 03:10:22,325 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 03:10:22,524 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 [2023-12-23 03:10:22,525 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 03:10:22,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 03:10:22,525 INFO L85 PathProgramCache]: Analyzing trace with hash 212800641, now seen corresponding path program 1 times [2023-12-23 03:10:22,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 03:10:22,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402699284] [2023-12-23 03:10:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 03:10:22,526 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 03:10:22,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 03:10:22,534 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 03:10:22,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 03:10:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 03:10:23,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-23 03:10:23,619 INFO L285 TraceCheckSpWp]: Computing forward predicates...