/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-81.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 02:56:59,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 02:57:00,004 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 02:57:00,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 02:57:00,010 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 02:57:00,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 02:57:00,041 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 02:57:00,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 02:57:00,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 02:57:00,045 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 02:57:00,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 02:57:00,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 02:57:00,047 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 02:57:00,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 02:57:00,048 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 02:57:00,049 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 02:57:00,049 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 02:57:00,050 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 02:57:00,050 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 02:57:00,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 02:57:00,051 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 02:57:00,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 02:57:00,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 02:57:00,052 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 02:57:00,052 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 02:57:00,053 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 02:57:00,053 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 02:57:00,053 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 02:57:00,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 02:57:00,053 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 02:57:00,054 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 02:57:00,054 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 02:57:00,054 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 02:57:00,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 02:57:00,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:57:00,055 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 02:57:00,055 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 02:57:00,055 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 02:57:00,055 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 02:57:00,055 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 02:57:00,056 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 02:57:00,056 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 02:57:00,056 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 02:57:00,056 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 02:57:00,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 02:57:00,057 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 02:57:00,057 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 02:57:00,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 02:57:00,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 02:57:00,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 02:57:00,338 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 02:57:00,338 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 02:57:00,340 INFO L431 ainManager$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-81.i [2023-12-23 02:57:01,578 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 02:57:01,844 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 02:57:01,845 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-81.i [2023-12-23 02:57:01,864 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b0304bc5/a21e3c3fe17647aa9cf052892a44b1be/FLAG449813be3 [2023-12-23 02:57:01,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b0304bc5/a21e3c3fe17647aa9cf052892a44b1be [2023-12-23 02:57:01,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 02:57:01,883 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 02:57:01,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 02:57:01,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 02:57:01,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 02:57:01,890 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:57:01" (1/1) ... [2023-12-23 02:57:01,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a29119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:01, skipping insertion in model container [2023-12-23 02:57:01,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:57:01" (1/1) ... [2023-12-23 02:57:01,939 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 02:57:02,085 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-81.i[916,929] [2023-12-23 02:57:02,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:57:02,227 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 02:57:02,238 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-81.i[916,929] [2023-12-23 02:57:02,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 02:57:02,329 INFO L206 MainTranslator]: Completed translation [2023-12-23 02:57:02,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02 WrapperNode [2023-12-23 02:57:02,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 02:57:02,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 02:57:02,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 02:57:02,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 02:57:02,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02" (1/1) ... [2023-12-23 02:57:02,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02" (1/1) ... [2023-12-23 02:57:02,415 INFO L138 Inliner]: procedures = 27, calls = 93, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 454 [2023-12-23 02:57:02,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 02:57:02,419 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 02:57:02,419 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 02:57:02,419 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 02:57:02,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02" (1/1) ... [2023-12-23 02:57:02,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02" (1/1) ... [2023-12-23 02:57:02,435 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02" (1/1) ... [2023-12-23 02:57:02,466 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 02:57:02,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02" (1/1) ... [2023-12-23 02:57:02,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02" (1/1) ... [2023-12-23 02:57:02,503 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02" (1/1) ... [2023-12-23 02:57:02,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02" (1/1) ... [2023-12-23 02:57:02,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02" (1/1) ... [2023-12-23 02:57:02,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02" (1/1) ... [2023-12-23 02:57:02,544 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 02:57:02,545 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 02:57:02,545 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 02:57:02,545 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 02:57:02,546 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02" (1/1) ... [2023-12-23 02:57:02,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 02:57:02,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 02:57:02,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-23 02:57:02,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-23 02:57:02,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 02:57:02,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 02:57:02,627 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 02:57:02,629 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 02:57:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 02:57:02,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 02:57:02,744 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 02:57:02,746 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 02:57:05,610 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 02:57:05,648 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 02:57:05,648 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 02:57:05,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:57:05 BoogieIcfgContainer [2023-12-23 02:57:05,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 02:57:05,651 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 02:57:05,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 02:57:05,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 02:57:05,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 02:57:01" (1/3) ... [2023-12-23 02:57:05,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1af3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:57:05, skipping insertion in model container [2023-12-23 02:57:05,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:57:02" (2/3) ... [2023-12-23 02:57:05,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1af3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:57:05, skipping insertion in model container [2023-12-23 02:57:05,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:57:05" (3/3) ... [2023-12-23 02:57:05,656 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-81.i [2023-12-23 02:57:05,672 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 02:57:05,673 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 02:57:05,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 02:57:05,733 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;@6ab1033c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 02:57:05,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 02:57:05,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 115 states have (on average 1.5478260869565217) internal successors, (178), 116 states have internal predecessors, (178), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-23 02:57:05,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2023-12-23 02:57:05,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:57:05,761 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:57:05,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:57:05,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:57:05,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1540756538, now seen corresponding path program 1 times [2023-12-23 02:57:05,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:57:05,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922367562] [2023-12-23 02:57:05,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:05,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:05,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:57:05,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:57:05,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-23 02:57:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:06,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 02:57:06,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5438 proven. 0 refuted. 0 times theorem prover too weak. 7202 trivial. 0 not checked. [2023-12-23 02:57:06,449 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:57:06,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:57:06,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922367562] [2023-12-23 02:57:06,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922367562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:57:06,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:57:06,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 02:57:06,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966598288] [2023-12-23 02:57:06,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:57:06,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 02:57:06,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:57:06,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 02:57:06,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 02:57:06,496 INFO L87 Difference]: Start difference. First operand has 198 states, 115 states have (on average 1.5478260869565217) internal successors, (178), 116 states have internal predecessors, (178), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-23 02:57:06,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:57:06,615 INFO L93 Difference]: Finished difference Result 393 states and 754 transitions. [2023-12-23 02:57:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 02:57:06,622 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 485 [2023-12-23 02:57:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:57:06,630 INFO L225 Difference]: With dead ends: 393 [2023-12-23 02:57:06,630 INFO L226 Difference]: Without dead ends: 196 [2023-12-23 02:57:06,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 02:57:06,639 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-23 02:57:06,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 329 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-23 02:57:06,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-23 02:57:06,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-12-23 02:57:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 114 states have internal predecessors, (172), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-12-23 02:57:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 332 transitions. [2023-12-23 02:57:06,755 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 332 transitions. Word has length 485 [2023-12-23 02:57:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:57:06,756 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 332 transitions. [2023-12-23 02:57:06,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-23 02:57:06,756 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 332 transitions. [2023-12-23 02:57:06,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-23 02:57:06,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:57:06,768 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:57:06,788 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 02:57:06,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:06,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:57:06,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:57:06,990 INFO L85 PathProgramCache]: Analyzing trace with hash 248325723, now seen corresponding path program 1 times [2023-12-23 02:57:06,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:57:06,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626420124] [2023-12-23 02:57:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:06,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:06,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:57:06,994 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:57:06,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-23 02:57:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:07,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 02:57:07,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-23 02:57:07,535 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:57:07,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:57:07,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626420124] [2023-12-23 02:57:07,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626420124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:57:07,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 02:57:07,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-23 02:57:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328824784] [2023-12-23 02:57:07,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:57:07,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 02:57:07,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:57:07,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 02:57:07,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:57:07,545 INFO L87 Difference]: Start difference. First operand 196 states and 332 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:57:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:57:07,667 INFO L93 Difference]: Finished difference Result 498 states and 849 transitions. [2023-12-23 02:57:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 02:57:07,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 486 [2023-12-23 02:57:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:57:07,677 INFO L225 Difference]: With dead ends: 498 [2023-12-23 02:57:07,677 INFO L226 Difference]: Without dead ends: 303 [2023-12-23 02:57:07,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 02:57:07,680 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 181 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 02:57:07,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 802 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 02:57:07,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-12-23 02:57:07,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 300. [2023-12-23 02:57:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 191 states have (on average 1.581151832460733) internal successors, (302), 192 states have internal predecessors, (302), 106 states have call successors, (106), 2 states have call predecessors, (106), 2 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-23 02:57:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 514 transitions. [2023-12-23 02:57:07,723 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 514 transitions. Word has length 486 [2023-12-23 02:57:07,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:57:07,725 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 514 transitions. [2023-12-23 02:57:07,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:57:07,725 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 514 transitions. [2023-12-23 02:57:07,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-23 02:57:07,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:57:07,729 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:57:07,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-23 02:57:07,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:07,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:57:07,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:57:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash -146041063, now seen corresponding path program 1 times [2023-12-23 02:57:07,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:57:07,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771119581] [2023-12-23 02:57:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:07,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:07,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:57:07,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:57:07,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-23 02:57:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:08,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 02:57:08,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5368 proven. 132 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2023-12-23 02:57:09,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:57:09,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:57:09,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771119581] [2023-12-23 02:57:09,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771119581] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:57:09,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [72188112] [2023-12-23 02:57:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:09,213 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 02:57:09,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 02:57:09,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 02:57:09,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-23 02:57:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:09,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-23 02:57:09,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-23 02:57:09,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 02:57:09,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [72188112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 02:57:09,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 02:57:09,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-12-23 02:57:09,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209457598] [2023-12-23 02:57:09,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:57:09,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 02:57:09,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:57:09,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 02:57:09,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-23 02:57:09,900 INFO L87 Difference]: Start difference. First operand 300 states and 514 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:57:10,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:57:10,029 INFO L93 Difference]: Finished difference Result 777 states and 1318 transitions. [2023-12-23 02:57:10,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 02:57:10,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 486 [2023-12-23 02:57:10,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:57:10,037 INFO L225 Difference]: With dead ends: 777 [2023-12-23 02:57:10,037 INFO L226 Difference]: Without dead ends: 478 [2023-12-23 02:57:10,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1012 GetRequests, 1004 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-23 02:57:10,040 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 172 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 02:57:10,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 644 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 02:57:10,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-12-23 02:57:10,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 475. [2023-12-23 02:57:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 288 states have (on average 1.5104166666666667) internal successors, (435), 291 states have internal predecessors, (435), 182 states have call successors, (182), 4 states have call predecessors, (182), 4 states have return successors, (182), 179 states have call predecessors, (182), 182 states have call successors, (182) [2023-12-23 02:57:10,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 799 transitions. [2023-12-23 02:57:10,095 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 799 transitions. Word has length 486 [2023-12-23 02:57:10,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:57:10,100 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 799 transitions. [2023-12-23 02:57:10,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:57:10,101 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 799 transitions. [2023-12-23 02:57:10,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-12-23 02:57:10,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:57:10,107 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:57:10,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 02:57:10,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-23 02:57:10,520 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-23 02:57:10,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:57:10,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:57:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1734388965, now seen corresponding path program 1 times [2023-12-23 02:57:10,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:57:10,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243518279] [2023-12-23 02:57:10,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:10,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:10,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:57:10,528 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:57:10,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-23 02:57:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:10,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-23 02:57:10,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5368 proven. 132 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2023-12-23 02:57:11,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:57:11,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:57:11,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243518279] [2023-12-23 02:57:11,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243518279] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:57:11,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1897141296] [2023-12-23 02:57:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:11,863 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 02:57:11,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 02:57:11,864 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 02:57:11,886 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 02:57:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:13,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 02:57:13,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5343 proven. 69 refuted. 0 times theorem prover too weak. 7228 trivial. 0 not checked. [2023-12-23 02:57:13,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:57:13,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1897141296] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:57:13,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:57:13,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2023-12-23 02:57:13,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687383607] [2023-12-23 02:57:13,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:57:13,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 02:57:13,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:57:13,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 02:57:13,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-23 02:57:13,403 INFO L87 Difference]: Start difference. First operand 475 states and 799 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 3 states have call successors, (102), 3 states have call predecessors, (102), 5 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2023-12-23 02:57:14,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:57:14,184 INFO L93 Difference]: Finished difference Result 965 states and 1611 transitions. [2023-12-23 02:57:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-23 02:57:14,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 3 states have call successors, (102), 3 states have call predecessors, (102), 5 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) Word has length 486 [2023-12-23 02:57:14,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:57:14,197 INFO L225 Difference]: With dead ends: 965 [2023-12-23 02:57:14,197 INFO L226 Difference]: Without dead ends: 491 [2023-12-23 02:57:14,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1048 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-12-23 02:57:14,199 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 199 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-23 02:57:14,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 576 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-23 02:57:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-12-23 02:57:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 483. [2023-12-23 02:57:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 294 states have (on average 1.4863945578231292) internal successors, (437), 297 states have internal predecessors, (437), 182 states have call successors, (182), 6 states have call predecessors, (182), 6 states have return successors, (182), 179 states have call predecessors, (182), 182 states have call successors, (182) [2023-12-23 02:57:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 801 transitions. [2023-12-23 02:57:14,238 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 801 transitions. Word has length 486 [2023-12-23 02:57:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:57:14,239 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 801 transitions. [2023-12-23 02:57:14,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 3 states have call successors, (102), 3 states have call predecessors, (102), 5 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2023-12-23 02:57:14,240 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 801 transitions. [2023-12-23 02:57:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-12-23 02:57:14,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:57:14,243 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:57:14,261 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 02:57:14,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-23 02:57:14,653 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 02:57:14,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:57:14,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:57:14,654 INFO L85 PathProgramCache]: Analyzing trace with hash 372289128, now seen corresponding path program 1 times [2023-12-23 02:57:14,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:57:14,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320703383] [2023-12-23 02:57:14,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:14,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:14,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:57:14,657 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:57:14,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-23 02:57:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:15,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 02:57:15,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6267 proven. 135 refuted. 0 times theorem prover too weak. 6238 trivial. 0 not checked. [2023-12-23 02:57:15,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:57:15,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:57:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320703383] [2023-12-23 02:57:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320703383] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:57:15,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1894947342] [2023-12-23 02:57:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:15,622 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 02:57:15,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 02:57:15,629 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 02:57:15,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-23 02:57:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:16,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 02:57:16,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6267 proven. 135 refuted. 0 times theorem prover too weak. 6238 trivial. 0 not checked. [2023-12-23 02:57:17,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:57:17,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1894947342] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:57:17,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:57:17,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-23 02:57:17,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471591501] [2023-12-23 02:57:17,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:57:17,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-23 02:57:17,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:57:17,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-23 02:57:17,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-23 02:57:17,421 INFO L87 Difference]: Start difference. First operand 483 states and 801 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-23 02:57:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:57:18,836 INFO L93 Difference]: Finished difference Result 981 states and 1615 transitions. [2023-12-23 02:57:18,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-23 02:57:18,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 487 [2023-12-23 02:57:18,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:57:18,849 INFO L225 Difference]: With dead ends: 981 [2023-12-23 02:57:18,849 INFO L226 Difference]: Without dead ends: 499 [2023-12-23 02:57:18,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 1055 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-23 02:57:18,852 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 154 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-23 02:57:18,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 540 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-23 02:57:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-12-23 02:57:18,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 491. [2023-12-23 02:57:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 300 states have (on average 1.4633333333333334) internal successors, (439), 303 states have internal predecessors, (439), 182 states have call successors, (182), 8 states have call predecessors, (182), 8 states have return successors, (182), 179 states have call predecessors, (182), 182 states have call successors, (182) [2023-12-23 02:57:18,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 803 transitions. [2023-12-23 02:57:18,893 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 803 transitions. Word has length 487 [2023-12-23 02:57:18,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:57:18,894 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 803 transitions. [2023-12-23 02:57:18,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-23 02:57:18,895 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 803 transitions. [2023-12-23 02:57:18,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-12-23 02:57:18,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:57:18,898 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:57:18,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-23 02:57:19,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-23 02:57:19,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:19,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:57:19,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:57:19,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1621855578, now seen corresponding path program 1 times [2023-12-23 02:57:19,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:57:19,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830929888] [2023-12-23 02:57:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:19,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:19,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:57:19,315 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:57:19,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-23 02:57:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:19,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 02:57:19,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 1429 proven. 12 refuted. 0 times theorem prover too weak. 11199 trivial. 0 not checked. [2023-12-23 02:57:19,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:57:20,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 225 proven. 12 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-23 02:57:20,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:57:20,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830929888] [2023-12-23 02:57:20,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830929888] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:57:20,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:57:20,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-23 02:57:20,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425993454] [2023-12-23 02:57:20,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:57:20,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-23 02:57:20,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:57:20,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-23 02:57:20,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-23 02:57:20,125 INFO L87 Difference]: Start difference. First operand 491 states and 803 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 2 states have call successors, (84), 2 states have call predecessors, (84), 4 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-23 02:57:21,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:57:21,689 INFO L93 Difference]: Finished difference Result 1481 states and 2405 transitions. [2023-12-23 02:57:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-23 02:57:21,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 2 states have call successors, (84), 2 states have call predecessors, (84), 4 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) Word has length 487 [2023-12-23 02:57:21,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:57:21,697 INFO L225 Difference]: With dead ends: 1481 [2023-12-23 02:57:21,697 INFO L226 Difference]: Without dead ends: 991 [2023-12-23 02:57:21,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 966 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-12-23 02:57:21,700 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 797 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-23 02:57:21,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1249 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-23 02:57:21,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-12-23 02:57:21,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 505. [2023-12-23 02:57:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 313 states have (on average 1.4568690095846646) internal successors, (456), 316 states have internal predecessors, (456), 182 states have call successors, (182), 9 states have call predecessors, (182), 9 states have return successors, (182), 179 states have call predecessors, (182), 182 states have call successors, (182) [2023-12-23 02:57:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 820 transitions. [2023-12-23 02:57:21,765 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 820 transitions. Word has length 487 [2023-12-23 02:57:21,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:57:21,765 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 820 transitions. [2023-12-23 02:57:21,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 2 states have call successors, (84), 2 states have call predecessors, (84), 4 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2023-12-23 02:57:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 820 transitions. [2023-12-23 02:57:21,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-12-23 02:57:21,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:57:21,770 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:57:21,790 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 (10)] Forceful destruction successful, exit code 0 [2023-12-23 02:57:21,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:21,984 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:57:21,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:57:21,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1652043364, now seen corresponding path program 1 times [2023-12-23 02:57:21,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:57:21,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43415875] [2023-12-23 02:57:21,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:21,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:21,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:57:21,987 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:57:21,991 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 (11)] Waiting until timeout for monitored process [2023-12-23 02:57:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:22,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-23 02:57:22,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 79 proven. 237 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-12-23 02:57:23,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:57:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-23 02:57:24,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:57:24,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43415875] [2023-12-23 02:57:24,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43415875] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:57:24,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:57:24,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2023-12-23 02:57:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620102103] [2023-12-23 02:57:24,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:57:24,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-23 02:57:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:57:24,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-23 02:57:24,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-23 02:57:24,569 INFO L87 Difference]: Start difference. First operand 505 states and 820 transitions. Second operand has 14 states, 14 states have (on average 12.642857142857142) internal successors, (177), 14 states have internal predecessors, (177), 4 states have call successors, (160), 3 states have call predecessors, (160), 4 states have return successors, (160), 2 states have call predecessors, (160), 4 states have call successors, (160) [2023-12-23 02:57:27,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:57:27,363 INFO L93 Difference]: Finished difference Result 1887 states and 3031 transitions. [2023-12-23 02:57:27,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-23 02:57:27,371 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.642857142857142) internal successors, (177), 14 states have internal predecessors, (177), 4 states have call successors, (160), 3 states have call predecessors, (160), 4 states have return successors, (160), 2 states have call predecessors, (160), 4 states have call successors, (160) Word has length 487 [2023-12-23 02:57:27,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:57:27,379 INFO L225 Difference]: With dead ends: 1887 [2023-12-23 02:57:27,379 INFO L226 Difference]: Without dead ends: 1383 [2023-12-23 02:57:27,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 962 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2023-12-23 02:57:27,383 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 912 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-23 02:57:27,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 2231 Invalid, 2225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-23 02:57:27,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-12-23 02:57:27,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 673. [2023-12-23 02:57:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 390 states have (on average 1.3564102564102565) internal successors, (529), 394 states have internal predecessors, (529), 262 states have call successors, (262), 20 states have call predecessors, (262), 20 states have return successors, (262), 258 states have call predecessors, (262), 262 states have call successors, (262) [2023-12-23 02:57:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1053 transitions. [2023-12-23 02:57:27,515 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1053 transitions. Word has length 487 [2023-12-23 02:57:27,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:57:27,516 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1053 transitions. [2023-12-23 02:57:27,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.642857142857142) internal successors, (177), 14 states have internal predecessors, (177), 4 states have call successors, (160), 3 states have call predecessors, (160), 4 states have return successors, (160), 2 states have call predecessors, (160), 4 states have call successors, (160) [2023-12-23 02:57:27,517 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1053 transitions. [2023-12-23 02:57:27,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-12-23 02:57:27,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:57:27,520 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:57:27,535 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 (11)] Forceful destruction successful, exit code 0 [2023-12-23 02:57:27,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:27,735 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:57:27,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:57:27,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1259016354, now seen corresponding path program 1 times [2023-12-23 02:57:27,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:57:27,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185712311] [2023-12-23 02:57:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:27,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:27,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:57:27,741 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:57:27,776 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 (12)] Waiting until timeout for monitored process [2023-12-23 02:57:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:28,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-23 02:57:28,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 2367 proven. 213 refuted. 0 times theorem prover too weak. 10060 trivial. 0 not checked. [2023-12-23 02:57:28,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:57:28,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:57:28,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185712311] [2023-12-23 02:57:28,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185712311] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:57:28,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [260363571] [2023-12-23 02:57:28,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:28,920 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 02:57:28,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 02:57:28,921 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 02:57:28,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-23 02:57:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:30,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 02:57:30,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 2367 proven. 213 refuted. 0 times theorem prover too weak. 10060 trivial. 0 not checked. [2023-12-23 02:57:30,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:57:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [260363571] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:57:30,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:57:30,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-12-23 02:57:30,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233153572] [2023-12-23 02:57:30,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:57:30,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-23 02:57:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:57:30,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-23 02:57:30,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-23 02:57:30,789 INFO L87 Difference]: Start difference. First operand 673 states and 1053 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-23 02:57:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:57:32,422 INFO L93 Difference]: Finished difference Result 1395 states and 2204 transitions. [2023-12-23 02:57:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-23 02:57:32,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 487 [2023-12-23 02:57:32,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:57:32,428 INFO L225 Difference]: With dead ends: 1395 [2023-12-23 02:57:32,428 INFO L226 Difference]: Without dead ends: 875 [2023-12-23 02:57:32,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1071 GetRequests, 1055 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-12-23 02:57:32,431 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 270 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-23 02:57:32,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1338 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-23 02:57:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-23 02:57:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 693. [2023-12-23 02:57:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 405 states have (on average 1.3333333333333333) internal successors, (540), 409 states have internal predecessors, (540), 262 states have call successors, (262), 25 states have call predecessors, (262), 25 states have return successors, (262), 258 states have call predecessors, (262), 262 states have call successors, (262) [2023-12-23 02:57:32,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1064 transitions. [2023-12-23 02:57:32,521 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1064 transitions. Word has length 487 [2023-12-23 02:57:32,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:57:32,522 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1064 transitions. [2023-12-23 02:57:32,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 2 states have call successors, (80), 2 states have call predecessors, (80), 3 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2023-12-23 02:57:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1064 transitions. [2023-12-23 02:57:32,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-12-23 02:57:32,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:57:32,526 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:57:32,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-23 02:57:32,747 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 (12)] Forceful destruction successful, exit code 0 [2023-12-23 02:57:32,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:32,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:57:32,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:57:32,937 INFO L85 PathProgramCache]: Analyzing trace with hash 371047113, now seen corresponding path program 1 times [2023-12-23 02:57:32,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:57:32,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157154119] [2023-12-23 02:57:32,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:32,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:32,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:57:32,939 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:57:32,956 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 (14)] Waiting until timeout for monitored process [2023-12-23 02:57:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:33,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-23 02:57:33,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 1569 proven. 222 refuted. 0 times theorem prover too weak. 10849 trivial. 0 not checked. [2023-12-23 02:57:33,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:57:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-12-23 02:57:34,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:57:34,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157154119] [2023-12-23 02:57:34,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157154119] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-23 02:57:34,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-23 02:57:34,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-23 02:57:34,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315076293] [2023-12-23 02:57:34,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 02:57:34,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-23 02:57:34,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:57:34,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-23 02:57:34,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-23 02:57:34,082 INFO L87 Difference]: Start difference. First operand 693 states and 1064 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:57:34,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:57:34,316 INFO L93 Difference]: Finished difference Result 1335 states and 2032 transitions. [2023-12-23 02:57:34,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-23 02:57:34,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 488 [2023-12-23 02:57:34,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:57:34,322 INFO L225 Difference]: With dead ends: 1335 [2023-12-23 02:57:34,323 INFO L226 Difference]: Without dead ends: 799 [2023-12-23 02:57:34,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 967 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-23 02:57:34,327 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 34 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-23 02:57:34,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 951 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-23 02:57:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-23 02:57:34,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 793. [2023-12-23 02:57:34,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 481 states have (on average 1.3056133056133057) internal successors, (628), 489 states have internal predecessors, (628), 278 states have call successors, (278), 33 states have call predecessors, (278), 33 states have return successors, (278), 270 states have call predecessors, (278), 278 states have call successors, (278) [2023-12-23 02:57:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1184 transitions. [2023-12-23 02:57:34,435 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1184 transitions. Word has length 488 [2023-12-23 02:57:34,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:57:34,436 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1184 transitions. [2023-12-23 02:57:34,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-12-23 02:57:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1184 transitions. [2023-12-23 02:57:34,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-12-23 02:57:34,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:57:34,440 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:57:34,453 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 (14)] Forceful destruction successful, exit code 0 [2023-12-23 02:57:34,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:57:34,653 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:57:34,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:57:34,653 INFO L85 PathProgramCache]: Analyzing trace with hash 371106695, now seen corresponding path program 1 times [2023-12-23 02:57:34,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:57:34,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337319586] [2023-12-23 02:57:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:34,654 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 02:57:34,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:57:34,655 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:57:34,657 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 (15)] Waiting until timeout for monitored process [2023-12-23 02:57:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:35,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-23 02:57:35,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 7848 proven. 189 refuted. 0 times theorem prover too weak. 4603 trivial. 0 not checked. [2023-12-23 02:57:38,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:57:40,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:57:40,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337319586] [2023-12-23 02:57:40,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337319586] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:57:40,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1795116900] [2023-12-23 02:57:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:57:40,152 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-23 02:57:40,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-23 02:57:40,153 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-23 02:57:40,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-23 02:57:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:57:42,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-23 02:57:42,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:57:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 7848 proven. 189 refuted. 0 times theorem prover too weak. 4603 trivial. 0 not checked. [2023-12-23 02:57:45,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:57:46,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1795116900] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-23 02:57:46,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:57:46,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2023-12-23 02:57:46,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428248912] [2023-12-23 02:57:46,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:57:46,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-23 02:57:46,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:57:46,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-23 02:57:46,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-12-23 02:57:46,861 INFO L87 Difference]: Start difference. First operand 793 states and 1184 transitions. Second operand has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 11 states have internal predecessors, (106), 4 states have call successors, (80), 4 states have call predecessors, (80), 6 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2023-12-23 02:58:03,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:58:03,789 INFO L93 Difference]: Finished difference Result 2631 states and 3900 transitions. [2023-12-23 02:58:03,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-23 02:58:03,790 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 11 states have internal predecessors, (106), 4 states have call successors, (80), 4 states have call predecessors, (80), 6 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 488 [2023-12-23 02:58:03,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:58:03,800 INFO L225 Difference]: With dead ends: 2631 [2023-12-23 02:58:03,800 INFO L226 Difference]: Without dead ends: 1995 [2023-12-23 02:58:03,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1072 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2023-12-23 02:58:03,804 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1165 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2023-12-23 02:58:03,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1199 Valid, 1081 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2023-12-23 02:58:03,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2023-12-23 02:58:04,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1939. [2023-12-23 02:58:04,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1249 states have (on average 1.345076060848679) internal successors, (1680), 1272 states have internal predecessors, (1680), 604 states have call successors, (604), 85 states have call predecessors, (604), 85 states have return successors, (604), 581 states have call predecessors, (604), 604 states have call successors, (604) [2023-12-23 02:58:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2888 transitions. [2023-12-23 02:58:04,075 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2888 transitions. Word has length 488 [2023-12-23 02:58:04,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:58:04,076 INFO L495 AbstractCegarLoop]: Abstraction has 1939 states and 2888 transitions. [2023-12-23 02:58:04,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 11 states have internal predecessors, (106), 4 states have call successors, (80), 4 states have call predecessors, (80), 6 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2023-12-23 02:58:04,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2888 transitions. [2023-12-23 02:58:04,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-12-23 02:58:04,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:58:04,080 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:58:04,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-23 02:58:04,302 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 (15)] Forceful destruction successful, exit code 0 [2023-12-23 02:58:04,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:58:04,492 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:58:04,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:58:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1041368515, now seen corresponding path program 1 times [2023-12-23 02:58:04,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:58:04,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594391838] [2023-12-23 02:58:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:58:04,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:58:04,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:58:04,494 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:58:04,496 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 (17)] Waiting until timeout for monitored process [2023-12-23 02:58:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:58:04,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-23 02:58:04,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 02:58:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 5893 proven. 84 refuted. 0 times theorem prover too weak. 6663 trivial. 0 not checked. [2023-12-23 02:58:05,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-23 02:58:05,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 153 proven. 84 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-12-23 02:58:05,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 02:58:05,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594391838] [2023-12-23 02:58:05,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594391838] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-23 02:58:05,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-23 02:58:05,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-23 02:58:05,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027663454] [2023-12-23 02:58:05,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-23 02:58:05,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-23 02:58:05,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 02:58:05,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-23 02:58:05,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-23 02:58:05,500 INFO L87 Difference]: Start difference. First operand 1939 states and 2888 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-12-23 02:58:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 02:58:06,189 INFO L93 Difference]: Finished difference Result 3093 states and 4610 transitions. [2023-12-23 02:58:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-23 02:58:06,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) Word has length 488 [2023-12-23 02:58:06,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 02:58:06,205 INFO L225 Difference]: With dead ends: 3093 [2023-12-23 02:58:06,205 INFO L226 Difference]: Without dead ends: 1327 [2023-12-23 02:58:06,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 968 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-23 02:58:06,212 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 182 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-23 02:58:06,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 540 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-23 02:58:06,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2023-12-23 02:58:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1164. [2023-12-23 02:58:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 788 states have (on average 1.4022842639593909) internal successors, (1105), 799 states have internal predecessors, (1105), 326 states have call successors, (326), 49 states have call predecessors, (326), 49 states have return successors, (326), 315 states have call predecessors, (326), 326 states have call successors, (326) [2023-12-23 02:58:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1757 transitions. [2023-12-23 02:58:06,373 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1757 transitions. Word has length 488 [2023-12-23 02:58:06,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 02:58:06,373 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 1757 transitions. [2023-12-23 02:58:06,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-12-23 02:58:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1757 transitions. [2023-12-23 02:58:06,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-12-23 02:58:06,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 02:58:06,377 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 02:58:06,392 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 (17)] Forceful destruction successful, exit code 0 [2023-12-23 02:58:06,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:58:06,592 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 02:58:06,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 02:58:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash -530074365, now seen corresponding path program 1 times [2023-12-23 02:58:06,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 02:58:06,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598007012] [2023-12-23 02:58:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 02:58:06,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-23 02:58:06,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 02:58:06,594 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-23 02:58:06,597 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 (18)] Waiting until timeout for monitored process [2023-12-23 02:58:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 02:58:07,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-23 02:58:07,231 INFO L285 TraceCheckSpWp]: Computing forward predicates...