/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/combinations/Problem05_label48+token_ring.13.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 22:13:12,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 22:13:12,382 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 22:13:12,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 22:13:12,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 22:13:12,412 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 22:13:12,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 22:13:12,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 22:13:12,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 22:13:12,416 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 22:13:12,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 22:13:12,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 22:13:12,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 22:13:12,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 22:13:12,418 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 22:13:12,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 22:13:12,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 22:13:12,418 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 22:13:12,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 22:13:12,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 22:13:12,419 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 22:13:12,419 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 22:13:12,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 22:13:12,419 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 22:13:12,420 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 22:13:12,420 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 22:13:12,420 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 22:13:12,420 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 22:13:12,420 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 22:13:12,420 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 22:13:12,421 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 22:13:12,421 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 22:13:12,421 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 22:13:12,421 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 22:13:12,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 22:13:12,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 22:13:12,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 22:13:12,422 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 22:13:12,422 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 22:13:12,422 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 22:13:12,422 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 22:13:12,422 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 22:13:12,422 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 22:13:12,423 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 22:13:12,423 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 22:13:12,423 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 22:13:12,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 22:13:12,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 22:13:12,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 22:13:12,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 22:13:12,610 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 22:13:12,610 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 22:13:12,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.13.cil-2.c [2023-12-21 22:13:13,607 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 22:13:14,060 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 22:13:14,060 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.13.cil-2.c [2023-12-21 22:13:14,086 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d37ec8dc/ad55685d877e4d1ca79d598a363654c1/FLAG2f4019e12 [2023-12-21 22:13:14,094 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d37ec8dc/ad55685d877e4d1ca79d598a363654c1 [2023-12-21 22:13:14,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 22:13:14,097 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 22:13:14,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 22:13:14,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 22:13:14,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 22:13:14,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:13:14" (1/1) ... [2023-12-21 22:13:14,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@653a0bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:14, skipping insertion in model container [2023-12-21 22:13:14,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:13:14" (1/1) ... [2023-12-21 22:13:14,253 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 22:13:15,490 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.13.cil-2.c[375709,375722] [2023-12-21 22:13:15,512 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.13.cil-2.c[383339,383352] [2023-12-21 22:13:15,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 22:13:15,739 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 22:13:16,321 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.13.cil-2.c[375709,375722] [2023-12-21 22:13:16,328 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.13.cil-2.c[383339,383352] [2023-12-21 22:13:16,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 22:13:16,402 INFO L206 MainTranslator]: Completed translation [2023-12-21 22:13:16,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16 WrapperNode [2023-12-21 22:13:16,402 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 22:13:16,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 22:13:16,404 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 22:13:16,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 22:13:16,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16" (1/1) ... [2023-12-21 22:13:16,480 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16" (1/1) ... [2023-12-21 22:13:16,848 INFO L138 Inliner]: procedures = 71, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13249 [2023-12-21 22:13:16,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 22:13:16,849 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 22:13:16,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 22:13:16,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 22:13:16,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16" (1/1) ... [2023-12-21 22:13:16,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16" (1/1) ... [2023-12-21 22:13:16,967 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16" (1/1) ... [2023-12-21 22:13:17,070 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]. [2023-12-21 22:13:17,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16" (1/1) ... [2023-12-21 22:13:17,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16" (1/1) ... [2023-12-21 22:13:17,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16" (1/1) ... [2023-12-21 22:13:17,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16" (1/1) ... [2023-12-21 22:13:17,401 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16" (1/1) ... [2023-12-21 22:13:17,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16" (1/1) ... [2023-12-21 22:13:17,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 22:13:17,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 22:13:17,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 22:13:17,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 22:13:17,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16" (1/1) ... [2023-12-21 22:13:17,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 22:13:17,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 22:13:17,492 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) [2023-12-21 22:13:17,494 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 [2023-12-21 22:13:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 22:13:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 22:13:17,510 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 22:13:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 22:13:17,510 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 22:13:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 22:13:17,510 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 22:13:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 22:13:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 22:13:17,510 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 22:13:17,511 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 22:13:17,511 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 22:13:17,511 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 22:13:17,511 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 22:13:17,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 22:13:17,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 22:13:17,618 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 22:13:17,620 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 22:13:24,936 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 22:13:25,046 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 22:13:25,046 INFO L309 CfgBuilder]: Removed 17 assume(true) statements. [2023-12-21 22:13:25,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:13:25 BoogieIcfgContainer [2023-12-21 22:13:25,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 22:13:25,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 22:13:25,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 22:13:25,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 22:13:25,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:13:14" (1/3) ... [2023-12-21 22:13:25,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5040a301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:13:25, skipping insertion in model container [2023-12-21 22:13:25,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:13:16" (2/3) ... [2023-12-21 22:13:25,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5040a301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:13:25, skipping insertion in model container [2023-12-21 22:13:25,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:13:25" (3/3) ... [2023-12-21 22:13:25,055 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.13.cil-2.c [2023-12-21 22:13:25,067 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 22:13:25,068 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 22:13:25,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 22:13:25,144 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;@50871864, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 22:13:25,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 22:13:25,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 2494 states, 2458 states have (on average 1.8746948738812041) internal successors, (4608), 2461 states have internal predecessors, (4608), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-21 22:13:25,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:25,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:25,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:25,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:25,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:25,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1072822453, now seen corresponding path program 1 times [2023-12-21 22:13:25,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:25,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044045337] [2023-12-21 22:13:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:25,197 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 [2023-12-21 22:13:25,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:25,199 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) [2023-12-21 22:13:25,224 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 [2023-12-21 22:13:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:25,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:13:25,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:25,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:25,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:25,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044045337] [2023-12-21 22:13:25,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044045337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:25,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:25,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:13:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70420961] [2023-12-21 22:13:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:25,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:13:25,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:25,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:13:25,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:13:25,560 INFO L87 Difference]: Start difference. First operand has 2494 states, 2458 states have (on average 1.8746948738812041) internal successors, (4608), 2461 states have internal predecessors, (4608), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:25,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:25,713 INFO L93 Difference]: Finished difference Result 4982 states and 9311 transitions. [2023-12-21 22:13:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:13:25,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:25,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:25,730 INFO L225 Difference]: With dead ends: 4982 [2023-12-21 22:13:25,730 INFO L226 Difference]: Without dead ends: 2490 [2023-12-21 22:13:25,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:13:25,739 INFO L413 NwaCegarLoop]: 4515 mSDtfsCounter, 597 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 8474 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:25,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 8474 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:13:25,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2023-12-21 22:13:25,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2490. [2023-12-21 22:13:25,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2455 states have (on average 1.8354378818737271) internal successors, (4506), 2457 states have internal predecessors, (4506), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-21 22:13:25,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 4560 transitions. [2023-12-21 22:13:25,852 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 4560 transitions. Word has length 171 [2023-12-21 22:13:25,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:25,854 INFO L495 AbstractCegarLoop]: Abstraction has 2490 states and 4560 transitions. [2023-12-21 22:13:25,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:25,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 4560 transitions. [2023-12-21 22:13:25,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:25,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:25,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:25,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-21 22:13:26,066 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 [2023-12-21 22:13:26,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:26,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1643094259, now seen corresponding path program 1 times [2023-12-21 22:13:26,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:26,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842891455] [2023-12-21 22:13:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:26,069 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 [2023-12-21 22:13:26,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:26,070 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) [2023-12-21 22:13:26,072 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 [2023-12-21 22:13:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:26,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:13:26,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:26,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:26,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:26,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842891455] [2023-12-21 22:13:26,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842891455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:26,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:26,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:13:26,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463279621] [2023-12-21 22:13:26,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:26,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:13:26,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:26,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:13:26,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:13:26,276 INFO L87 Difference]: Start difference. First operand 2490 states and 4560 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:26,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:26,449 INFO L93 Difference]: Finished difference Result 2844 states and 5135 transitions. [2023-12-21 22:13:26,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:13:26,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:26,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:26,459 INFO L225 Difference]: With dead ends: 2844 [2023-12-21 22:13:26,459 INFO L226 Difference]: Without dead ends: 2490 [2023-12-21 22:13:26,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:13:26,461 INFO L413 NwaCegarLoop]: 4511 mSDtfsCounter, 585 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 8468 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:26,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 8468 Invalid, 49 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:13:26,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2023-12-21 22:13:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 2490. [2023-12-21 22:13:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2455 states have (on average 1.835030549898167) internal successors, (4505), 2457 states have internal predecessors, (4505), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-21 22:13:26,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 4559 transitions. [2023-12-21 22:13:26,511 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 4559 transitions. Word has length 171 [2023-12-21 22:13:26,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:26,513 INFO L495 AbstractCegarLoop]: Abstraction has 2490 states and 4559 transitions. [2023-12-21 22:13:26,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:26,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 4559 transitions. [2023-12-21 22:13:26,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:26,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:26,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:26,523 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 [2023-12-21 22:13:26,723 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 [2023-12-21 22:13:26,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:26,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:26,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1031825201, now seen corresponding path program 1 times [2023-12-21 22:13:26,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:26,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604535725] [2023-12-21 22:13:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:26,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:13:26,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:26,727 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) [2023-12-21 22:13:26,728 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 [2023-12-21 22:13:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:26,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:26,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:26,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:26,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:26,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604535725] [2023-12-21 22:13:26,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604535725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:26,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:26,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:26,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406244366] [2023-12-21 22:13:26,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:26,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:26,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:26,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:26,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:26,985 INFO L87 Difference]: Start difference. First operand 2490 states and 4559 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:27,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:27,742 INFO L93 Difference]: Finished difference Result 3243 states and 5802 transitions. [2023-12-21 22:13:27,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 22:13:27,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:27,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:27,752 INFO L225 Difference]: With dead ends: 3243 [2023-12-21 22:13:27,752 INFO L226 Difference]: Without dead ends: 2893 [2023-12-21 22:13:27,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:27,755 INFO L413 NwaCegarLoop]: 4398 mSDtfsCounter, 5130 mSDsluCounter, 9029 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5151 SdHoareTripleChecker+Valid, 13427 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:27,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5151 Valid, 13427 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 22:13:27,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2023-12-21 22:13:27,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2862. [2023-12-21 22:13:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2798 states have (on average 1.812723373838456) internal successors, (5072), 2801 states have internal predecessors, (5072), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 22:13:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5171 transitions. [2023-12-21 22:13:27,809 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5171 transitions. Word has length 171 [2023-12-21 22:13:27,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:27,809 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5171 transitions. [2023-12-21 22:13:27,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5171 transitions. [2023-12-21 22:13:27,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:27,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:27,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:27,819 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 [2023-12-21 22:13:28,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:13:28,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:28,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:28,017 INFO L85 PathProgramCache]: Analyzing trace with hash 247523539, now seen corresponding path program 1 times [2023-12-21 22:13:28,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:28,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938108250] [2023-12-21 22:13:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:28,018 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 [2023-12-21 22:13:28,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:28,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:13:28,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 22:13:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:28,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:28,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:28,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:28,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:28,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938108250] [2023-12-21 22:13:28,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938108250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:28,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:28,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:28,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823383661] [2023-12-21 22:13:28,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:28,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:28,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:28,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:28,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:28,243 INFO L87 Difference]: Start difference. First operand 2862 states and 5171 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:28,743 INFO L93 Difference]: Finished difference Result 3584 states and 6358 transitions. [2023-12-21 22:13:28,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:28,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:28,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:28,756 INFO L225 Difference]: With dead ends: 3584 [2023-12-21 22:13:28,756 INFO L226 Difference]: Without dead ends: 2862 [2023-12-21 22:13:28,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:28,760 INFO L413 NwaCegarLoop]: 4334 mSDtfsCounter, 4778 mSDsluCounter, 8506 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4799 SdHoareTripleChecker+Valid, 12840 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:28,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4799 Valid, 12840 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:13:28,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-12-21 22:13:28,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2862. [2023-12-21 22:13:28,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2798 states have (on average 1.8102215868477485) internal successors, (5065), 2801 states have internal predecessors, (5065), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 22:13:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5164 transitions. [2023-12-21 22:13:28,820 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5164 transitions. Word has length 171 [2023-12-21 22:13:28,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:28,821 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5164 transitions. [2023-12-21 22:13:28,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5164 transitions. [2023-12-21 22:13:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:28,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:28,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:28,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:29,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:13:29,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:29,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:29,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2066511793, now seen corresponding path program 1 times [2023-12-21 22:13:29,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:29,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811063937] [2023-12-21 22:13:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:29,029 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 [2023-12-21 22:13:29,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:29,045 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) [2023-12-21 22:13:29,048 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 [2023-12-21 22:13:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:29,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:29,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:29,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:29,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:29,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811063937] [2023-12-21 22:13:29,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811063937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:29,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:29,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:29,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642340823] [2023-12-21 22:13:29,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:29,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:29,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:29,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:29,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:29,262 INFO L87 Difference]: Start difference. First operand 2862 states and 5164 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:29,727 INFO L93 Difference]: Finished difference Result 3584 states and 6344 transitions. [2023-12-21 22:13:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:29,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:29,737 INFO L225 Difference]: With dead ends: 3584 [2023-12-21 22:13:29,737 INFO L226 Difference]: Without dead ends: 2862 [2023-12-21 22:13:29,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:29,739 INFO L413 NwaCegarLoop]: 4331 mSDtfsCounter, 4771 mSDsluCounter, 8502 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4792 SdHoareTripleChecker+Valid, 12833 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:29,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4792 Valid, 12833 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:13:29,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-12-21 22:13:29,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2862. [2023-12-21 22:13:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2798 states have (on average 1.8077197998570407) internal successors, (5058), 2801 states have internal predecessors, (5058), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 22:13:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5157 transitions. [2023-12-21 22:13:29,798 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5157 transitions. Word has length 171 [2023-12-21 22:13:29,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:29,798 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5157 transitions. [2023-12-21 22:13:29,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:29,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5157 transitions. [2023-12-21 22:13:29,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:29,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:29,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:29,808 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 [2023-12-21 22:13:30,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:13:30,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:30,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:30,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1153423051, now seen corresponding path program 1 times [2023-12-21 22:13:30,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:30,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181796793] [2023-12-21 22:13:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:30,012 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 [2023-12-21 22:13:30,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:30,013 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:13:30,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 22:13:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:30,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:30,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:30,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:30,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:30,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:30,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181796793] [2023-12-21 22:13:30,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181796793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:30,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:30,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:30,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039883993] [2023-12-21 22:13:30,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:30,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:30,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:30,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:30,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:30,272 INFO L87 Difference]: Start difference. First operand 2862 states and 5157 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:30,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:30,734 INFO L93 Difference]: Finished difference Result 3584 states and 6330 transitions. [2023-12-21 22:13:30,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:30,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:30,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:30,743 INFO L225 Difference]: With dead ends: 3584 [2023-12-21 22:13:30,743 INFO L226 Difference]: Without dead ends: 2862 [2023-12-21 22:13:30,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:30,748 INFO L413 NwaCegarLoop]: 4328 mSDtfsCounter, 4765 mSDsluCounter, 8498 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 12826 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:30,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4786 Valid, 12826 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:13:30,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-12-21 22:13:30,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2862. [2023-12-21 22:13:30,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2798 states have (on average 1.805218012866333) internal successors, (5051), 2801 states have internal predecessors, (5051), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 22:13:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5150 transitions. [2023-12-21 22:13:30,892 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5150 transitions. Word has length 171 [2023-12-21 22:13:30,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:30,892 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5150 transitions. [2023-12-21 22:13:30,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5150 transitions. [2023-12-21 22:13:30,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:30,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:30,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:30,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:31,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:13:31,099 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:31,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:31,100 INFO L85 PathProgramCache]: Analyzing trace with hash -820918065, now seen corresponding path program 1 times [2023-12-21 22:13:31,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:31,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454300443] [2023-12-21 22:13:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:31,100 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 [2023-12-21 22:13:31,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:31,101 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) [2023-12-21 22:13:31,111 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 [2023-12-21 22:13:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:31,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:31,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:31,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:31,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:31,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:31,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454300443] [2023-12-21 22:13:31,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454300443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:31,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:31,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:31,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962298819] [2023-12-21 22:13:31,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:31,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:31,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:31,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:31,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:31,311 INFO L87 Difference]: Start difference. First operand 2862 states and 5150 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:31,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:31,756 INFO L93 Difference]: Finished difference Result 3584 states and 6316 transitions. [2023-12-21 22:13:31,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:31,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:31,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:31,767 INFO L225 Difference]: With dead ends: 3584 [2023-12-21 22:13:31,767 INFO L226 Difference]: Without dead ends: 2862 [2023-12-21 22:13:31,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:31,770 INFO L413 NwaCegarLoop]: 4325 mSDtfsCounter, 4759 mSDsluCounter, 8494 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4780 SdHoareTripleChecker+Valid, 12819 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:31,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4780 Valid, 12819 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:13:31,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-12-21 22:13:31,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2862. [2023-12-21 22:13:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2798 states have (on average 1.8027162258756255) internal successors, (5044), 2801 states have internal predecessors, (5044), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 22:13:31,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5143 transitions. [2023-12-21 22:13:31,815 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5143 transitions. Word has length 171 [2023-12-21 22:13:31,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:31,815 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5143 transitions. [2023-12-21 22:13:31,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:31,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5143 transitions. [2023-12-21 22:13:31,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:31,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:31,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:31,824 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 [2023-12-21 22:13:32,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-21 22:13:32,025 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:32,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:32,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1854437813, now seen corresponding path program 1 times [2023-12-21 22:13:32,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:32,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670199118] [2023-12-21 22:13:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:32,026 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 [2023-12-21 22:13:32,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:32,028 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:13:32,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 22:13:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:32,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:32,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:32,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:32,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:32,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670199118] [2023-12-21 22:13:32,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670199118] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:32,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:32,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:32,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137812024] [2023-12-21 22:13:32,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:32,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:32,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:32,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:32,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:32,236 INFO L87 Difference]: Start difference. First operand 2862 states and 5143 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:32,676 INFO L93 Difference]: Finished difference Result 3584 states and 6302 transitions. [2023-12-21 22:13:32,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:32,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:32,684 INFO L225 Difference]: With dead ends: 3584 [2023-12-21 22:13:32,684 INFO L226 Difference]: Without dead ends: 2862 [2023-12-21 22:13:32,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:32,686 INFO L413 NwaCegarLoop]: 4322 mSDtfsCounter, 4753 mSDsluCounter, 8490 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4774 SdHoareTripleChecker+Valid, 12812 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:32,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4774 Valid, 12812 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:13:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-12-21 22:13:32,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2862. [2023-12-21 22:13:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2798 states have (on average 1.8002144388849177) internal successors, (5037), 2801 states have internal predecessors, (5037), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 22:13:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5136 transitions. [2023-12-21 22:13:32,730 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5136 transitions. Word has length 171 [2023-12-21 22:13:32,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:32,730 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5136 transitions. [2023-12-21 22:13:32,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:32,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5136 transitions. [2023-12-21 22:13:32,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:32,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:32,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:32,740 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 (9)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:32,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 [2023-12-21 22:13:32,937 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:32,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:32,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1427883315, now seen corresponding path program 1 times [2023-12-21 22:13:32,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:32,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932803940] [2023-12-21 22:13:32,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:32,938 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 [2023-12-21 22:13:32,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:32,939 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) [2023-12-21 22:13:32,940 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 [2023-12-21 22:13:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:33,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:33,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:33,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:33,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:33,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:33,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932803940] [2023-12-21 22:13:33,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932803940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:33,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:33,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:33,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80489738] [2023-12-21 22:13:33,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:33,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:33,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:33,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:33,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:33,138 INFO L87 Difference]: Start difference. First operand 2862 states and 5136 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:33,559 INFO L93 Difference]: Finished difference Result 3584 states and 6288 transitions. [2023-12-21 22:13:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:33,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:33,566 INFO L225 Difference]: With dead ends: 3584 [2023-12-21 22:13:33,566 INFO L226 Difference]: Without dead ends: 2862 [2023-12-21 22:13:33,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:33,568 INFO L413 NwaCegarLoop]: 4319 mSDtfsCounter, 4747 mSDsluCounter, 8486 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 12805 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:33,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 12805 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:13:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-12-21 22:13:33,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2862. [2023-12-21 22:13:33,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2798 states have (on average 1.7977126518942101) internal successors, (5030), 2801 states have internal predecessors, (5030), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 22:13:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5129 transitions. [2023-12-21 22:13:33,615 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5129 transitions. Word has length 171 [2023-12-21 22:13:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:33,616 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5129 transitions. [2023-12-21 22:13:33,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5129 transitions. [2023-12-21 22:13:33,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:33,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:33,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:33,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-21 22:13:33,821 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 [2023-12-21 22:13:33,822 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:33,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:33,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1297295177, now seen corresponding path program 1 times [2023-12-21 22:13:33,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:33,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723883080] [2023-12-21 22:13:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:33,823 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 [2023-12-21 22:13:33,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:33,824 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) [2023-12-21 22:13:33,825 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 [2023-12-21 22:13:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:33,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:33,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:34,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:34,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:34,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723883080] [2023-12-21 22:13:34,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723883080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:34,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:34,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:34,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154746664] [2023-12-21 22:13:34,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:34,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:34,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:34,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:34,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:34,028 INFO L87 Difference]: Start difference. First operand 2862 states and 5129 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:34,453 INFO L93 Difference]: Finished difference Result 3584 states and 6274 transitions. [2023-12-21 22:13:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:34,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:34,460 INFO L225 Difference]: With dead ends: 3584 [2023-12-21 22:13:34,460 INFO L226 Difference]: Without dead ends: 2862 [2023-12-21 22:13:34,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:34,462 INFO L413 NwaCegarLoop]: 4316 mSDtfsCounter, 4741 mSDsluCounter, 8482 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4762 SdHoareTripleChecker+Valid, 12798 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:34,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4762 Valid, 12798 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:13:34,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-12-21 22:13:34,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2862. [2023-12-21 22:13:34,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2798 states have (on average 1.7952108649035026) internal successors, (5023), 2801 states have internal predecessors, (5023), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 22:13:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5122 transitions. [2023-12-21 22:13:34,577 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5122 transitions. Word has length 171 [2023-12-21 22:13:34,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:34,578 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5122 transitions. [2023-12-21 22:13:34,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:34,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5122 transitions. [2023-12-21 22:13:34,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:34,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:34,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:34,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-21 22:13:34,784 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 [2023-12-21 22:13:34,784 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:34,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:34,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1800846157, now seen corresponding path program 1 times [2023-12-21 22:13:34,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:34,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611162713] [2023-12-21 22:13:34,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:34,785 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 [2023-12-21 22:13:34,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:34,786 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) [2023-12-21 22:13:34,798 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 [2023-12-21 22:13:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:34,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:34,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:34,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:34,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:34,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611162713] [2023-12-21 22:13:34,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611162713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:34,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:34,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:34,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725793580] [2023-12-21 22:13:34,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:34,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:34,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:34,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:34,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:34,991 INFO L87 Difference]: Start difference. First operand 2862 states and 5122 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:35,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:35,426 INFO L93 Difference]: Finished difference Result 3584 states and 6260 transitions. [2023-12-21 22:13:35,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:35,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:35,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:35,433 INFO L225 Difference]: With dead ends: 3584 [2023-12-21 22:13:35,433 INFO L226 Difference]: Without dead ends: 2862 [2023-12-21 22:13:35,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:35,435 INFO L413 NwaCegarLoop]: 4313 mSDtfsCounter, 4735 mSDsluCounter, 8478 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4756 SdHoareTripleChecker+Valid, 12791 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:35,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4756 Valid, 12791 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:13:35,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-12-21 22:13:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2862. [2023-12-21 22:13:35,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2798 states have (on average 1.7927090779127948) internal successors, (5016), 2801 states have internal predecessors, (5016), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 22:13:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5115 transitions. [2023-12-21 22:13:35,493 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5115 transitions. Word has length 171 [2023-12-21 22:13:35,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:35,494 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5115 transitions. [2023-12-21 22:13:35,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:35,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5115 transitions. [2023-12-21 22:13:35,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:35,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:35,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:35,500 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 [2023-12-21 22:13:35,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-21 22:13:35,700 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:35,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:35,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1817089737, now seen corresponding path program 1 times [2023-12-21 22:13:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:35,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227406264] [2023-12-21 22:13:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:35,701 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 [2023-12-21 22:13:35,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:35,702 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-12-21 22:13:35,741 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 (13)] Waiting until timeout for monitored process [2023-12-21 22:13:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:35,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:35,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:35,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:35,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:35,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227406264] [2023-12-21 22:13:35,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227406264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:35,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:35,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:35,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013909083] [2023-12-21 22:13:35,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:35,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:35,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:35,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:35,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:35,924 INFO L87 Difference]: Start difference. First operand 2862 states and 5115 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:36,379 INFO L93 Difference]: Finished difference Result 3584 states and 6246 transitions. [2023-12-21 22:13:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:36,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:36,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:36,385 INFO L225 Difference]: With dead ends: 3584 [2023-12-21 22:13:36,385 INFO L226 Difference]: Without dead ends: 2862 [2023-12-21 22:13:36,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:36,387 INFO L413 NwaCegarLoop]: 4310 mSDtfsCounter, 4728 mSDsluCounter, 8474 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4749 SdHoareTripleChecker+Valid, 12784 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:36,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4749 Valid, 12784 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:13:36,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-12-21 22:13:36,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2862. [2023-12-21 22:13:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2798 states have (on average 1.7902072909220872) internal successors, (5009), 2801 states have internal predecessors, (5009), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 22:13:36,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5108 transitions. [2023-12-21 22:13:36,444 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5108 transitions. Word has length 171 [2023-12-21 22:13:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:36,445 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5108 transitions. [2023-12-21 22:13:36,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5108 transitions. [2023-12-21 22:13:36,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:36,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:36,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:36,453 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 (13)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:36,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 [2023-12-21 22:13:36,651 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:36,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1732190533, now seen corresponding path program 1 times [2023-12-21 22:13:36,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:36,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106802366] [2023-12-21 22:13:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:36,652 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 [2023-12-21 22:13:36,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:36,653 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) [2023-12-21 22:13:36,655 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 [2023-12-21 22:13:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:36,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:36,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:36,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:36,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:36,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106802366] [2023-12-21 22:13:36,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106802366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:36,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:36,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:36,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201923361] [2023-12-21 22:13:36,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:36,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:36,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:36,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:36,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:36,869 INFO L87 Difference]: Start difference. First operand 2862 states and 5108 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:37,367 INFO L93 Difference]: Finished difference Result 3584 states and 6232 transitions. [2023-12-21 22:13:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:37,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:37,373 INFO L225 Difference]: With dead ends: 3584 [2023-12-21 22:13:37,373 INFO L226 Difference]: Without dead ends: 2862 [2023-12-21 22:13:37,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:37,376 INFO L413 NwaCegarLoop]: 4307 mSDtfsCounter, 4722 mSDsluCounter, 8470 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4743 SdHoareTripleChecker+Valid, 12777 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:37,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4743 Valid, 12777 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:13:37,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-12-21 22:13:37,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2862. [2023-12-21 22:13:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2798 states have (on average 1.7877055039313796) internal successors, (5002), 2801 states have internal predecessors, (5002), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 22:13:37,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5101 transitions. [2023-12-21 22:13:37,433 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5101 transitions. Word has length 171 [2023-12-21 22:13:37,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:37,433 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5101 transitions. [2023-12-21 22:13:37,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:37,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5101 transitions. [2023-12-21 22:13:37,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:37,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:37,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:37,444 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 [2023-12-21 22:13:37,643 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 [2023-12-21 22:13:37,643 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:37,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:37,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1729451849, now seen corresponding path program 1 times [2023-12-21 22:13:37,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:37,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562781961] [2023-12-21 22:13:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:37,644 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 [2023-12-21 22:13:37,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:37,646 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) [2023-12-21 22:13:37,647 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 [2023-12-21 22:13:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:37,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:37,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:37,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:37,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:37,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562781961] [2023-12-21 22:13:37,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562781961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:37,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:37,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:37,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257102375] [2023-12-21 22:13:37,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:37,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:37,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:37,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:37,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:37,842 INFO L87 Difference]: Start difference. First operand 2862 states and 5101 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:38,378 INFO L93 Difference]: Finished difference Result 3584 states and 6218 transitions. [2023-12-21 22:13:38,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:38,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:38,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:38,386 INFO L225 Difference]: With dead ends: 3584 [2023-12-21 22:13:38,386 INFO L226 Difference]: Without dead ends: 2862 [2023-12-21 22:13:38,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:38,389 INFO L413 NwaCegarLoop]: 4304 mSDtfsCounter, 4716 mSDsluCounter, 8466 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4737 SdHoareTripleChecker+Valid, 12770 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:38,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4737 Valid, 12770 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:13:38,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2023-12-21 22:13:38,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2862. [2023-12-21 22:13:38,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2798 states have (on average 1.7852037169406718) internal successors, (4995), 2801 states have internal predecessors, (4995), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 22:13:38,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5094 transitions. [2023-12-21 22:13:38,456 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5094 transitions. Word has length 171 [2023-12-21 22:13:38,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:38,456 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5094 transitions. [2023-12-21 22:13:38,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:38,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5094 transitions. [2023-12-21 22:13:38,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:38,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:38,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:38,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-21 22:13:38,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-21 22:13:38,662 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:38,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1872867131, now seen corresponding path program 1 times [2023-12-21 22:13:38,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:38,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331298944] [2023-12-21 22:13:38,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:38,664 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 [2023-12-21 22:13:38,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:38,664 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-12-21 22:13:38,665 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 (16)] Waiting until timeout for monitored process [2023-12-21 22:13:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:38,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:38,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:38,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:38,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:38,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331298944] [2023-12-21 22:13:38,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331298944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:38,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:38,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:38,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570604694] [2023-12-21 22:13:38,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:38,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:38,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:38,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:38,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:38,865 INFO L87 Difference]: Start difference. First operand 2862 states and 5094 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:39,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:39,443 INFO L93 Difference]: Finished difference Result 3762 states and 6496 transitions. [2023-12-21 22:13:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:13:39,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:39,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:39,448 INFO L225 Difference]: With dead ends: 3762 [2023-12-21 22:13:39,448 INFO L226 Difference]: Without dead ends: 3040 [2023-12-21 22:13:39,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:39,452 INFO L413 NwaCegarLoop]: 4302 mSDtfsCounter, 4833 mSDsluCounter, 8462 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4854 SdHoareTripleChecker+Valid, 12764 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:39,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4854 Valid, 12764 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:13:39,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2023-12-21 22:13:39,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 3040. [2023-12-21 22:13:39,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3040 states, 2970 states have (on average 1.7649831649831649) internal successors, (5242), 2973 states have internal predecessors, (5242), 51 states have call successors, (51), 16 states have call predecessors, (51), 17 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2023-12-21 22:13:39,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 5345 transitions. [2023-12-21 22:13:39,527 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 5345 transitions. Word has length 171 [2023-12-21 22:13:39,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:39,528 INFO L495 AbstractCegarLoop]: Abstraction has 3040 states and 5345 transitions. [2023-12-21 22:13:39,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:39,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 5345 transitions. [2023-12-21 22:13:39,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:39,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:39,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:39,536 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 (16)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:39,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 [2023-12-21 22:13:39,735 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:39,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:39,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1056401400, now seen corresponding path program 1 times [2023-12-21 22:13:39,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:39,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717519597] [2023-12-21 22:13:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:39,736 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 [2023-12-21 22:13:39,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:39,737 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) [2023-12-21 22:13:39,760 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 [2023-12-21 22:13:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:39,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:39,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:39,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:39,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717519597] [2023-12-21 22:13:39,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717519597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:39,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:39,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:39,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027079417] [2023-12-21 22:13:39,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:39,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:39,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:39,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:39,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:39,936 INFO L87 Difference]: Start difference. First operand 3040 states and 5345 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:40,521 INFO L93 Difference]: Finished difference Result 4118 states and 6998 transitions. [2023-12-21 22:13:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:13:40,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:40,526 INFO L225 Difference]: With dead ends: 4118 [2023-12-21 22:13:40,527 INFO L226 Difference]: Without dead ends: 3218 [2023-12-21 22:13:40,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:40,529 INFO L413 NwaCegarLoop]: 4299 mSDtfsCounter, 4826 mSDsluCounter, 8458 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4847 SdHoareTripleChecker+Valid, 12757 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:40,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4847 Valid, 12757 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:13:40,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2023-12-21 22:13:40,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3218. [2023-12-21 22:13:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3142 states have (on average 1.7457033736473584) internal successors, (5485), 3145 states have internal predecessors, (5485), 53 states have call successors, (53), 20 states have call predecessors, (53), 21 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2023-12-21 22:13:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5592 transitions. [2023-12-21 22:13:40,598 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5592 transitions. Word has length 171 [2023-12-21 22:13:40,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:40,598 INFO L495 AbstractCegarLoop]: Abstraction has 3218 states and 5592 transitions. [2023-12-21 22:13:40,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:40,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5592 transitions. [2023-12-21 22:13:40,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:40,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:40,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:40,610 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 [2023-12-21 22:13:40,804 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 [2023-12-21 22:13:40,805 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:40,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:40,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1643757700, now seen corresponding path program 1 times [2023-12-21 22:13:40,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:40,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68733563] [2023-12-21 22:13:40,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:40,806 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 [2023-12-21 22:13:40,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:40,807 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) [2023-12-21 22:13:40,807 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 [2023-12-21 22:13:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:40,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:40,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:41,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:41,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:41,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68733563] [2023-12-21 22:13:41,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68733563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:41,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:41,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:41,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101177105] [2023-12-21 22:13:41,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:41,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:41,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:41,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:41,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:41,013 INFO L87 Difference]: Start difference. First operand 3218 states and 5592 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:41,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:41,561 INFO L93 Difference]: Finished difference Result 4474 states and 7492 transitions. [2023-12-21 22:13:41,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:13:41,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:41,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:41,566 INFO L225 Difference]: With dead ends: 4474 [2023-12-21 22:13:41,566 INFO L226 Difference]: Without dead ends: 3396 [2023-12-21 22:13:41,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:41,570 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 4820 mSDsluCounter, 8454 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4841 SdHoareTripleChecker+Valid, 12750 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:41,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4841 Valid, 12750 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:13:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2023-12-21 22:13:41,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 3396. [2023-12-21 22:13:41,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3314 states have (on average 1.7272178636089317) internal successors, (5724), 3317 states have internal predecessors, (5724), 55 states have call successors, (55), 24 states have call predecessors, (55), 25 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2023-12-21 22:13:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 5835 transitions. [2023-12-21 22:13:41,694 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 5835 transitions. Word has length 171 [2023-12-21 22:13:41,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:41,694 INFO L495 AbstractCegarLoop]: Abstraction has 3396 states and 5835 transitions. [2023-12-21 22:13:41,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:41,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 5835 transitions. [2023-12-21 22:13:41,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:41,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:41,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:41,702 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 (18)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:41,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2023-12-21 22:13:41,901 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:41,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:41,902 INFO L85 PathProgramCache]: Analyzing trace with hash 469522057, now seen corresponding path program 1 times [2023-12-21 22:13:41,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:41,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024371650] [2023-12-21 22:13:41,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:41,902 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 [2023-12-21 22:13:41,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:41,903 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-12-21 22:13:41,916 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 (19)] Waiting until timeout for monitored process [2023-12-21 22:13:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:42,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:42,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:42,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:42,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:42,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:42,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024371650] [2023-12-21 22:13:42,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024371650] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:42,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:42,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:42,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037919865] [2023-12-21 22:13:42,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:42,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:42,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:42,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:42,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:42,137 INFO L87 Difference]: Start difference. First operand 3396 states and 5835 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:42,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:42,690 INFO L93 Difference]: Finished difference Result 4830 states and 7978 transitions. [2023-12-21 22:13:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:13:42,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:42,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:42,696 INFO L225 Difference]: With dead ends: 4830 [2023-12-21 22:13:42,696 INFO L226 Difference]: Without dead ends: 3574 [2023-12-21 22:13:42,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:42,699 INFO L413 NwaCegarLoop]: 4293 mSDtfsCounter, 4813 mSDsluCounter, 8450 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4834 SdHoareTripleChecker+Valid, 12743 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:42,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4834 Valid, 12743 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:13:42,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2023-12-21 22:13:42,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3574. [2023-12-21 22:13:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3486 states have (on average 1.7094090648307516) internal successors, (5959), 3489 states have internal predecessors, (5959), 57 states have call successors, (57), 28 states have call predecessors, (57), 29 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2023-12-21 22:13:42,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 6074 transitions. [2023-12-21 22:13:42,771 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 6074 transitions. Word has length 171 [2023-12-21 22:13:42,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:42,772 INFO L495 AbstractCegarLoop]: Abstraction has 3574 states and 6074 transitions. [2023-12-21 22:13:42,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:42,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 6074 transitions. [2023-12-21 22:13:42,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:42,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:42,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:42,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:42,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2023-12-21 22:13:42,978 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:42,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:42,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1616104604, now seen corresponding path program 1 times [2023-12-21 22:13:42,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:42,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28740132] [2023-12-21 22:13:42,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:42,978 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 [2023-12-21 22:13:42,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:42,979 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-12-21 22:13:42,980 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 (20)] Waiting until timeout for monitored process [2023-12-21 22:13:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:43,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:43,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:43,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:43,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:43,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:43,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28740132] [2023-12-21 22:13:43,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28740132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:43,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:43,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:43,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056427157] [2023-12-21 22:13:43,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:43,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:43,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:43,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:43,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:43,178 INFO L87 Difference]: Start difference. First operand 3574 states and 6074 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:43,721 INFO L93 Difference]: Finished difference Result 5186 states and 8456 transitions. [2023-12-21 22:13:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:13:43,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:43,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:43,726 INFO L225 Difference]: With dead ends: 5186 [2023-12-21 22:13:43,726 INFO L226 Difference]: Without dead ends: 3752 [2023-12-21 22:13:43,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:43,729 INFO L413 NwaCegarLoop]: 4290 mSDtfsCounter, 4805 mSDsluCounter, 8446 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4826 SdHoareTripleChecker+Valid, 12736 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:43,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4826 Valid, 12736 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:13:43,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2023-12-21 22:13:43,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3752. [2023-12-21 22:13:43,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3752 states, 3658 states have (on average 1.6921815199562602) internal successors, (6190), 3661 states have internal predecessors, (6190), 59 states have call successors, (59), 32 states have call predecessors, (59), 33 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2023-12-21 22:13:43,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 6309 transitions. [2023-12-21 22:13:43,807 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 6309 transitions. Word has length 171 [2023-12-21 22:13:43,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:43,807 INFO L495 AbstractCegarLoop]: Abstraction has 3752 states and 6309 transitions. [2023-12-21 22:13:43,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 6309 transitions. [2023-12-21 22:13:43,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:43,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:43,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:43,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:44,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2023-12-21 22:13:44,013 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:44,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:44,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1789532671, now seen corresponding path program 1 times [2023-12-21 22:13:44,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:44,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574859638] [2023-12-21 22:13:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:44,015 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 [2023-12-21 22:13:44,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:44,030 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-12-21 22:13:44,056 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 (21)] Waiting until timeout for monitored process [2023-12-21 22:13:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:44,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:44,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:44,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:44,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:44,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574859638] [2023-12-21 22:13:44,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574859638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:44,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:44,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:44,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489702889] [2023-12-21 22:13:44,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:44,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:44,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:44,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:44,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:44,230 INFO L87 Difference]: Start difference. First operand 3752 states and 6309 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:44,792 INFO L93 Difference]: Finished difference Result 5542 states and 8926 transitions. [2023-12-21 22:13:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:13:44,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:44,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:44,797 INFO L225 Difference]: With dead ends: 5542 [2023-12-21 22:13:44,797 INFO L226 Difference]: Without dead ends: 3930 [2023-12-21 22:13:44,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:44,800 INFO L413 NwaCegarLoop]: 4287 mSDtfsCounter, 4798 mSDsluCounter, 8442 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4819 SdHoareTripleChecker+Valid, 12729 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:44,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4819 Valid, 12729 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:13:44,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2023-12-21 22:13:44,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3930. [2023-12-21 22:13:44,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 3830 states have (on average 1.6754569190600521) internal successors, (6417), 3833 states have internal predecessors, (6417), 61 states have call successors, (61), 36 states have call predecessors, (61), 37 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2023-12-21 22:13:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 6540 transitions. [2023-12-21 22:13:44,879 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 6540 transitions. Word has length 171 [2023-12-21 22:13:44,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:44,880 INFO L495 AbstractCegarLoop]: Abstraction has 3930 states and 6540 transitions. [2023-12-21 22:13:44,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:44,880 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 6540 transitions. [2023-12-21 22:13:44,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:44,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:44,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:44,891 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 (21)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:45,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2023-12-21 22:13:45,086 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:45,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash 982029315, now seen corresponding path program 1 times [2023-12-21 22:13:45,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:45,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249322736] [2023-12-21 22:13:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:45,087 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 [2023-12-21 22:13:45,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:45,088 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-12-21 22:13:45,088 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 (22)] Waiting until timeout for monitored process [2023-12-21 22:13:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:45,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:45,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:45,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:45,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:45,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249322736] [2023-12-21 22:13:45,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249322736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:45,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:45,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:45,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691221307] [2023-12-21 22:13:45,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:45,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:45,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:45,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:45,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:45,277 INFO L87 Difference]: Start difference. First operand 3930 states and 6540 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:45,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:45,868 INFO L93 Difference]: Finished difference Result 5898 states and 9388 transitions. [2023-12-21 22:13:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:13:45,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:45,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:45,875 INFO L225 Difference]: With dead ends: 5898 [2023-12-21 22:13:45,876 INFO L226 Difference]: Without dead ends: 4108 [2023-12-21 22:13:45,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:45,879 INFO L413 NwaCegarLoop]: 4284 mSDtfsCounter, 4791 mSDsluCounter, 8438 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4812 SdHoareTripleChecker+Valid, 12722 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:45,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4812 Valid, 12722 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:13:45,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2023-12-21 22:13:45,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 4108. [2023-12-21 22:13:45,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 4002 states have (on average 1.6591704147926036) internal successors, (6640), 4005 states have internal predecessors, (6640), 63 states have call successors, (63), 40 states have call predecessors, (63), 41 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-12-21 22:13:45,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 6767 transitions. [2023-12-21 22:13:45,982 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 6767 transitions. Word has length 171 [2023-12-21 22:13:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:45,982 INFO L495 AbstractCegarLoop]: Abstraction has 4108 states and 6767 transitions. [2023-12-21 22:13:45,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 6767 transitions. [2023-12-21 22:13:45,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:45,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:45,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:45,989 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 (22)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:46,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2023-12-21 22:13:46,189 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:46,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:46,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1721584546, now seen corresponding path program 1 times [2023-12-21 22:13:46,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:46,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723451030] [2023-12-21 22:13:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:46,190 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 [2023-12-21 22:13:46,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:46,191 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-12-21 22:13:46,191 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 (23)] Waiting until timeout for monitored process [2023-12-21 22:13:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:46,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:46,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:46,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:46,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:46,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723451030] [2023-12-21 22:13:46,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723451030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:46,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:46,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:46,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152182063] [2023-12-21 22:13:46,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:46,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:46,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:46,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:46,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:46,385 INFO L87 Difference]: Start difference. First operand 4108 states and 6767 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:47,010 INFO L93 Difference]: Finished difference Result 6254 states and 9842 transitions. [2023-12-21 22:13:47,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:13:47,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:47,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:47,016 INFO L225 Difference]: With dead ends: 6254 [2023-12-21 22:13:47,016 INFO L226 Difference]: Without dead ends: 4286 [2023-12-21 22:13:47,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:47,020 INFO L413 NwaCegarLoop]: 4281 mSDtfsCounter, 4784 mSDsluCounter, 8434 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4805 SdHoareTripleChecker+Valid, 12715 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:47,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4805 Valid, 12715 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:13:47,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4286 states. [2023-12-21 22:13:47,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4286 to 4286. [2023-12-21 22:13:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4174 states have (on average 1.6432678485864878) internal successors, (6859), 4177 states have internal predecessors, (6859), 65 states have call successors, (65), 44 states have call predecessors, (65), 45 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2023-12-21 22:13:47,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 6990 transitions. [2023-12-21 22:13:47,112 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 6990 transitions. Word has length 171 [2023-12-21 22:13:47,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:47,112 INFO L495 AbstractCegarLoop]: Abstraction has 4286 states and 6990 transitions. [2023-12-21 22:13:47,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:47,112 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 6990 transitions. [2023-12-21 22:13:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:47,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:47,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:47,120 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 (23)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:47,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2023-12-21 22:13:47,319 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:47,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:47,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2138877152, now seen corresponding path program 1 times [2023-12-21 22:13:47,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:47,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346759613] [2023-12-21 22:13:47,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:47,320 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 [2023-12-21 22:13:47,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:47,321 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-12-21 22:13:47,335 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 (24)] Waiting until timeout for monitored process [2023-12-21 22:13:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:47,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:47,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:47,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:47,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:47,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346759613] [2023-12-21 22:13:47,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346759613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:47,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:47,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:47,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845341272] [2023-12-21 22:13:47,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:47,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:47,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:47,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:47,517 INFO L87 Difference]: Start difference. First operand 4286 states and 6990 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:48,100 INFO L93 Difference]: Finished difference Result 6610 states and 10288 transitions. [2023-12-21 22:13:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:13:48,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:48,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:48,107 INFO L225 Difference]: With dead ends: 6610 [2023-12-21 22:13:48,107 INFO L226 Difference]: Without dead ends: 4464 [2023-12-21 22:13:48,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:48,111 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 4777 mSDsluCounter, 8430 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4798 SdHoareTripleChecker+Valid, 12708 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:48,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4798 Valid, 12708 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:13:48,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2023-12-21 22:13:48,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 4464. [2023-12-21 22:13:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4464 states, 4346 states have (on average 1.6277036355269212) internal successors, (7074), 4349 states have internal predecessors, (7074), 67 states have call successors, (67), 48 states have call predecessors, (67), 49 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2023-12-21 22:13:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 7209 transitions. [2023-12-21 22:13:48,290 INFO L78 Accepts]: Start accepts. Automaton has 4464 states and 7209 transitions. Word has length 171 [2023-12-21 22:13:48,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:48,290 INFO L495 AbstractCegarLoop]: Abstraction has 4464 states and 7209 transitions. [2023-12-21 22:13:48,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:48,291 INFO L276 IsEmpty]: Start isEmpty. Operand 4464 states and 7209 transitions. [2023-12-21 22:13:48,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:48,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:48,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:48,301 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 (24)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:48,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-12-21 22:13:48,499 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:48,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:48,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1442658043, now seen corresponding path program 1 times [2023-12-21 22:13:48,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:48,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021352163] [2023-12-21 22:13:48,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:48,500 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 [2023-12-21 22:13:48,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:48,501 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-12-21 22:13:48,502 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 (25)] Waiting until timeout for monitored process [2023-12-21 22:13:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:48,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:48,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:48,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:48,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:48,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021352163] [2023-12-21 22:13:48,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021352163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:48,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:48,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:48,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267179459] [2023-12-21 22:13:48,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:48,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:48,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:48,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:48,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:48,711 INFO L87 Difference]: Start difference. First operand 4464 states and 7209 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:49,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:49,294 INFO L93 Difference]: Finished difference Result 6966 states and 10726 transitions. [2023-12-21 22:13:49,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:13:49,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:49,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:49,301 INFO L225 Difference]: With dead ends: 6966 [2023-12-21 22:13:49,301 INFO L226 Difference]: Without dead ends: 4642 [2023-12-21 22:13:49,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:49,305 INFO L413 NwaCegarLoop]: 4275 mSDtfsCounter, 4770 mSDsluCounter, 8426 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 12701 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:49,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4791 Valid, 12701 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:13:49,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4642 states. [2023-12-21 22:13:49,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4642 to 4642. [2023-12-21 22:13:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4642 states, 4518 states have (on average 1.6124391323594511) internal successors, (7285), 4521 states have internal predecessors, (7285), 69 states have call successors, (69), 52 states have call predecessors, (69), 53 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2023-12-21 22:13:49,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4642 states to 4642 states and 7424 transitions. [2023-12-21 22:13:49,409 INFO L78 Accepts]: Start accepts. Automaton has 4642 states and 7424 transitions. Word has length 171 [2023-12-21 22:13:49,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:49,409 INFO L495 AbstractCegarLoop]: Abstraction has 4642 states and 7424 transitions. [2023-12-21 22:13:49,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4642 states and 7424 transitions. [2023-12-21 22:13:49,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:49,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:49,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:49,417 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 (25)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:49,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 [2023-12-21 22:13:49,615 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:49,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:49,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1158763263, now seen corresponding path program 1 times [2023-12-21 22:13:49,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:49,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971014335] [2023-12-21 22:13:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:49,616 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 [2023-12-21 22:13:49,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:49,617 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-12-21 22:13:49,619 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 (26)] Waiting until timeout for monitored process [2023-12-21 22:13:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:49,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:49,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:49,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:49,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:49,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971014335] [2023-12-21 22:13:49,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971014335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:49,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:49,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:49,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457138302] [2023-12-21 22:13:49,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:49,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:49,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:49,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:49,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:49,811 INFO L87 Difference]: Start difference. First operand 4642 states and 7424 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:50,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:50,388 INFO L93 Difference]: Finished difference Result 7322 states and 11156 transitions. [2023-12-21 22:13:50,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:13:50,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:50,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:50,394 INFO L225 Difference]: With dead ends: 7322 [2023-12-21 22:13:50,394 INFO L226 Difference]: Without dead ends: 4820 [2023-12-21 22:13:50,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:50,399 INFO L413 NwaCegarLoop]: 4272 mSDtfsCounter, 4763 mSDsluCounter, 8422 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 12694 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:50,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4784 Valid, 12694 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:13:50,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4820 states. [2023-12-21 22:13:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4820 to 4820. [2023-12-21 22:13:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4820 states, 4690 states have (on average 1.5974413646055436) internal successors, (7492), 4693 states have internal predecessors, (7492), 71 states have call successors, (71), 56 states have call predecessors, (71), 57 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2023-12-21 22:13:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 7635 transitions. [2023-12-21 22:13:50,507 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 7635 transitions. Word has length 171 [2023-12-21 22:13:50,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:50,507 INFO L495 AbstractCegarLoop]: Abstraction has 4820 states and 7635 transitions. [2023-12-21 22:13:50,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:50,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 7635 transitions. [2023-12-21 22:13:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:50,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:50,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:50,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-12-21 22:13:50,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 [2023-12-21 22:13:50,712 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:50,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:50,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1187088678, now seen corresponding path program 1 times [2023-12-21 22:13:50,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:50,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248650262] [2023-12-21 22:13:50,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:50,713 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 [2023-12-21 22:13:50,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:50,714 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-12-21 22:13:50,715 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 (27)] Waiting until timeout for monitored process [2023-12-21 22:13:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:50,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:50,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:50,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:50,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:50,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:50,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248650262] [2023-12-21 22:13:50,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248650262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:50,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:50,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:50,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689925999] [2023-12-21 22:13:50,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:50,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:13:50,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:50,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:13:50,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:13:50,909 INFO L87 Difference]: Start difference. First operand 4820 states and 7635 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:51,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:51,545 INFO L93 Difference]: Finished difference Result 7678 states and 11578 transitions. [2023-12-21 22:13:51,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:13:51,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:51,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:51,551 INFO L225 Difference]: With dead ends: 7678 [2023-12-21 22:13:51,551 INFO L226 Difference]: Without dead ends: 4998 [2023-12-21 22:13:51,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:13:51,555 INFO L413 NwaCegarLoop]: 4269 mSDtfsCounter, 4755 mSDsluCounter, 8418 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4776 SdHoareTripleChecker+Valid, 12687 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:51,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4776 Valid, 12687 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:13:51,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4998 states. [2023-12-21 22:13:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4998 to 4998. [2023-12-21 22:13:51,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4998 states, 4862 states have (on average 1.5826820238584944) internal successors, (7695), 4865 states have internal predecessors, (7695), 73 states have call successors, (73), 60 states have call predecessors, (73), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-21 22:13:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4998 states to 4998 states and 7842 transitions. [2023-12-21 22:13:51,670 INFO L78 Accepts]: Start accepts. Automaton has 4998 states and 7842 transitions. Word has length 171 [2023-12-21 22:13:51,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:51,670 INFO L495 AbstractCegarLoop]: Abstraction has 4998 states and 7842 transitions. [2023-12-21 22:13:51,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:51,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4998 states and 7842 transitions. [2023-12-21 22:13:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:51,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:51,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:51,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-21 22:13:51,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 [2023-12-21 22:13:51,875 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:51,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:51,875 INFO L85 PathProgramCache]: Analyzing trace with hash -936674986, now seen corresponding path program 1 times [2023-12-21 22:13:51,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:51,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519668421] [2023-12-21 22:13:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:51,876 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 [2023-12-21 22:13:51,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:51,877 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-12-21 22:13:51,878 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 (28)] Waiting until timeout for monitored process [2023-12-21 22:13:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:52,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:52,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:52,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:52,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:52,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519668421] [2023-12-21 22:13:52,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519668421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:52,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:52,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:52,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725754125] [2023-12-21 22:13:52,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:52,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:13:52,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:52,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:13:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:52,016 INFO L87 Difference]: Start difference. First operand 4998 states and 7842 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:52,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:52,253 INFO L93 Difference]: Finished difference Result 8019 states and 11971 transitions. [2023-12-21 22:13:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:52,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:52,262 INFO L225 Difference]: With dead ends: 8019 [2023-12-21 22:13:52,262 INFO L226 Difference]: Without dead ends: 5162 [2023-12-21 22:13:52,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:52,268 INFO L413 NwaCegarLoop]: 4442 mSDtfsCounter, 119 mSDsluCounter, 8868 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 13310 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:52,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 13310 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:13:52,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5162 states. [2023-12-21 22:13:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5162 to 5002. [2023-12-21 22:13:52,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5002 states, 4866 states have (on average 1.5772708590217839) internal successors, (7675), 4869 states have internal predecessors, (7675), 73 states have call successors, (73), 60 states have call predecessors, (73), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-21 22:13:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5002 states to 5002 states and 7822 transitions. [2023-12-21 22:13:52,384 INFO L78 Accepts]: Start accepts. Automaton has 5002 states and 7822 transitions. Word has length 171 [2023-12-21 22:13:52,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:52,384 INFO L495 AbstractCegarLoop]: Abstraction has 5002 states and 7822 transitions. [2023-12-21 22:13:52,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:52,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5002 states and 7822 transitions. [2023-12-21 22:13:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:52,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:52,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:52,392 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 (28)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:52,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 [2023-12-21 22:13:52,593 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:52,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:52,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1065211284, now seen corresponding path program 1 times [2023-12-21 22:13:52,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:52,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708525175] [2023-12-21 22:13:52,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:52,594 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 [2023-12-21 22:13:52,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:52,595 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-12-21 22:13:52,595 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 (29)] Waiting until timeout for monitored process [2023-12-21 22:13:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:52,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:52,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:52,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:52,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:52,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708525175] [2023-12-21 22:13:52,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708525175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:52,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:52,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:52,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330750339] [2023-12-21 22:13:52,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:52,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:13:52,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:52,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:13:52,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:52,735 INFO L87 Difference]: Start difference. First operand 5002 states and 7822 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:52,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:52,972 INFO L93 Difference]: Finished difference Result 8015 states and 11915 transitions. [2023-12-21 22:13:52,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:52,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:52,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:52,978 INFO L225 Difference]: With dead ends: 8015 [2023-12-21 22:13:52,978 INFO L226 Difference]: Without dead ends: 5154 [2023-12-21 22:13:52,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:52,981 INFO L413 NwaCegarLoop]: 4442 mSDtfsCounter, 110 mSDsluCounter, 8869 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 13311 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:52,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 13311 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:13:52,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5154 states. [2023-12-21 22:13:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5154 to 5006. [2023-12-21 22:13:53,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5006 states, 4870 states have (on average 1.5718685831622177) internal successors, (7655), 4873 states have internal predecessors, (7655), 73 states have call successors, (73), 60 states have call predecessors, (73), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-21 22:13:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 7802 transitions. [2023-12-21 22:13:53,089 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 7802 transitions. Word has length 171 [2023-12-21 22:13:53,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:53,089 INFO L495 AbstractCegarLoop]: Abstraction has 5006 states and 7802 transitions. [2023-12-21 22:13:53,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:53,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 7802 transitions. [2023-12-21 22:13:53,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:53,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:53,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:53,095 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 (29)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:53,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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 [2023-12-21 22:13:53,295 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:53,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:53,295 INFO L85 PathProgramCache]: Analyzing trace with hash 26626710, now seen corresponding path program 1 times [2023-12-21 22:13:53,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:53,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765662515] [2023-12-21 22:13:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:53,296 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 [2023-12-21 22:13:53,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:53,297 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-12-21 22:13:53,297 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 (30)] Waiting until timeout for monitored process [2023-12-21 22:13:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:53,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:53,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:53,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:53,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:53,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765662515] [2023-12-21 22:13:53,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765662515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:53,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:53,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:53,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076024258] [2023-12-21 22:13:53,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:53,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:13:53,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:53,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:13:53,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:53,438 INFO L87 Difference]: Start difference. First operand 5006 states and 7802 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:53,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:53,626 INFO L93 Difference]: Finished difference Result 8011 states and 11859 transitions. [2023-12-21 22:13:53,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:53,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:53,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:53,632 INFO L225 Difference]: With dead ends: 8011 [2023-12-21 22:13:53,632 INFO L226 Difference]: Without dead ends: 5146 [2023-12-21 22:13:53,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:53,636 INFO L413 NwaCegarLoop]: 4442 mSDtfsCounter, 101 mSDsluCounter, 8870 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 13312 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:53,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 13312 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:13:53,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5146 states. [2023-12-21 22:13:53,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5146 to 5010. [2023-12-21 22:13:53,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5010 states, 4874 states have (on average 1.5664751743947476) internal successors, (7635), 4877 states have internal predecessors, (7635), 73 states have call successors, (73), 60 states have call predecessors, (73), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-21 22:13:53,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 7782 transitions. [2023-12-21 22:13:53,748 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 7782 transitions. Word has length 171 [2023-12-21 22:13:53,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:53,749 INFO L495 AbstractCegarLoop]: Abstraction has 5010 states and 7782 transitions. [2023-12-21 22:13:53,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:53,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 7782 transitions. [2023-12-21 22:13:53,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:53,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:53,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:53,757 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 (30)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:53,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /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 [2023-12-21 22:13:53,955 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:53,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:53,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1415920724, now seen corresponding path program 1 times [2023-12-21 22:13:53,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:53,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568586906] [2023-12-21 22:13:53,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:53,956 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 [2023-12-21 22:13:53,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:53,957 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-12-21 22:13:53,957 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 (31)] Waiting until timeout for monitored process [2023-12-21 22:13:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:54,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:54,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:54,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:54,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:54,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568586906] [2023-12-21 22:13:54,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568586906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:54,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:54,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:54,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355374504] [2023-12-21 22:13:54,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:54,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:13:54,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:54,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:13:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:54,105 INFO L87 Difference]: Start difference. First operand 5010 states and 7782 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:54,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:54,289 INFO L93 Difference]: Finished difference Result 8007 states and 11803 transitions. [2023-12-21 22:13:54,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:54,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:54,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:54,295 INFO L225 Difference]: With dead ends: 8007 [2023-12-21 22:13:54,296 INFO L226 Difference]: Without dead ends: 5138 [2023-12-21 22:13:54,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:54,300 INFO L413 NwaCegarLoop]: 4442 mSDtfsCounter, 92 mSDsluCounter, 8871 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 13313 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:54,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 13313 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:13:54,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5138 states. [2023-12-21 22:13:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5138 to 5014. [2023-12-21 22:13:54,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 4878 states have (on average 1.5610906109061091) internal successors, (7615), 4881 states have internal predecessors, (7615), 73 states have call successors, (73), 60 states have call predecessors, (73), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-21 22:13:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 7762 transitions. [2023-12-21 22:13:54,459 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 7762 transitions. Word has length 171 [2023-12-21 22:13:54,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:54,459 INFO L495 AbstractCegarLoop]: Abstraction has 5014 states and 7762 transitions. [2023-12-21 22:13:54,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:54,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 7762 transitions. [2023-12-21 22:13:54,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:54,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:54,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:54,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-12-21 22:13:54,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /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 [2023-12-21 22:13:54,664 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:54,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:54,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1848005674, now seen corresponding path program 1 times [2023-12-21 22:13:54,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:54,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535298518] [2023-12-21 22:13:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:54,665 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 [2023-12-21 22:13:54,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:54,681 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-12-21 22:13:54,686 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 (32)] Waiting until timeout for monitored process [2023-12-21 22:13:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:54,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:54,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:54,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:54,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:54,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535298518] [2023-12-21 22:13:54,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535298518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:54,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:54,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:54,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411850610] [2023-12-21 22:13:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:54,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:13:54,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:54,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:13:54,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:54,818 INFO L87 Difference]: Start difference. First operand 5014 states and 7762 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:55,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:55,025 INFO L93 Difference]: Finished difference Result 7991 states and 11729 transitions. [2023-12-21 22:13:55,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:55,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:55,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:55,032 INFO L225 Difference]: With dead ends: 7991 [2023-12-21 22:13:55,032 INFO L226 Difference]: Without dead ends: 5118 [2023-12-21 22:13:55,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:55,037 INFO L413 NwaCegarLoop]: 4442 mSDtfsCounter, 74 mSDsluCounter, 8872 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 13314 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:55,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 13314 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:13:55,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2023-12-21 22:13:55,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5018. [2023-12-21 22:13:55,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 4882 states have (on average 1.5557148709545268) internal successors, (7595), 4885 states have internal predecessors, (7595), 73 states have call successors, (73), 60 states have call predecessors, (73), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-21 22:13:55,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 7742 transitions. [2023-12-21 22:13:55,154 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 7742 transitions. Word has length 171 [2023-12-21 22:13:55,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:55,154 INFO L495 AbstractCegarLoop]: Abstraction has 5018 states and 7742 transitions. [2023-12-21 22:13:55,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:55,154 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 7742 transitions. [2023-12-21 22:13:55,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:55,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:55,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:55,172 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 (32)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:55,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /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 [2023-12-21 22:13:55,360 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:55,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:55,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1676228056, now seen corresponding path program 1 times [2023-12-21 22:13:55,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:55,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539870994] [2023-12-21 22:13:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:55,361 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 [2023-12-21 22:13:55,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:55,362 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2023-12-21 22:13:55,369 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 (33)] Waiting until timeout for monitored process [2023-12-21 22:13:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:55,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:55,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:55,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:55,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:55,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539870994] [2023-12-21 22:13:55,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539870994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:55,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:55,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:55,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736063130] [2023-12-21 22:13:55,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:55,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:13:55,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:55,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:13:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:55,502 INFO L87 Difference]: Start difference. First operand 5018 states and 7742 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:55,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:55,687 INFO L93 Difference]: Finished difference Result 7987 states and 11673 transitions. [2023-12-21 22:13:55,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:55,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:55,694 INFO L225 Difference]: With dead ends: 7987 [2023-12-21 22:13:55,694 INFO L226 Difference]: Without dead ends: 5110 [2023-12-21 22:13:55,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:55,698 INFO L413 NwaCegarLoop]: 4442 mSDtfsCounter, 65 mSDsluCounter, 8873 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 13315 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:55,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 13315 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:13:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2023-12-21 22:13:55,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 5022. [2023-12-21 22:13:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5022 states, 4886 states have (on average 1.5503479328694227) internal successors, (7575), 4889 states have internal predecessors, (7575), 73 states have call successors, (73), 60 states have call predecessors, (73), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-21 22:13:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5022 states to 5022 states and 7722 transitions. [2023-12-21 22:13:55,868 INFO L78 Accepts]: Start accepts. Automaton has 5022 states and 7722 transitions. Word has length 171 [2023-12-21 22:13:55,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:55,868 INFO L495 AbstractCegarLoop]: Abstraction has 5022 states and 7722 transitions. [2023-12-21 22:13:55,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:55,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5022 states and 7722 transitions. [2023-12-21 22:13:55,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:55,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:55,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:55,876 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 (33)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:56,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /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 [2023-12-21 22:13:56,074 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:56,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:56,075 INFO L85 PathProgramCache]: Analyzing trace with hash -202902890, now seen corresponding path program 1 times [2023-12-21 22:13:56,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:56,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748105320] [2023-12-21 22:13:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:56,075 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 [2023-12-21 22:13:56,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:56,076 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-12-21 22:13:56,077 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 (34)] Waiting until timeout for monitored process [2023-12-21 22:13:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:56,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:56,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:56,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:56,215 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:56,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748105320] [2023-12-21 22:13:56,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748105320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:56,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:56,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:56,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099538202] [2023-12-21 22:13:56,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:56,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:13:56,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:56,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:13:56,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:56,217 INFO L87 Difference]: Start difference. First operand 5022 states and 7722 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:56,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:56,423 INFO L93 Difference]: Finished difference Result 7983 states and 11617 transitions. [2023-12-21 22:13:56,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:56,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:56,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:56,431 INFO L225 Difference]: With dead ends: 7983 [2023-12-21 22:13:56,432 INFO L226 Difference]: Without dead ends: 5102 [2023-12-21 22:13:56,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:56,437 INFO L413 NwaCegarLoop]: 4442 mSDtfsCounter, 56 mSDsluCounter, 8874 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 13316 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:56,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 13316 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:13:56,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2023-12-21 22:13:56,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5026. [2023-12-21 22:13:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 4890 states have (on average 1.5449897750511248) internal successors, (7555), 4893 states have internal predecessors, (7555), 73 states have call successors, (73), 60 states have call predecessors, (73), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-21 22:13:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 7702 transitions. [2023-12-21 22:13:56,550 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 7702 transitions. Word has length 171 [2023-12-21 22:13:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:56,550 INFO L495 AbstractCegarLoop]: Abstraction has 5026 states and 7702 transitions. [2023-12-21 22:13:56,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 7702 transitions. [2023-12-21 22:13:56,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:56,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:56,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:56,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-12-21 22:13:56,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /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 [2023-12-21 22:13:56,752 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:56,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:56,753 INFO L85 PathProgramCache]: Analyzing trace with hash 37336856, now seen corresponding path program 1 times [2023-12-21 22:13:56,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:56,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471517822] [2023-12-21 22:13:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:56,753 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 [2023-12-21 22:13:56,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:56,754 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2023-12-21 22:13:56,755 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 (35)] Waiting until timeout for monitored process [2023-12-21 22:13:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:56,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:56,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:56,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:56,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:56,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471517822] [2023-12-21 22:13:56,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471517822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:56,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:56,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:56,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329553517] [2023-12-21 22:13:56,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:56,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:13:56,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:56,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:13:56,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:56,890 INFO L87 Difference]: Start difference. First operand 5026 states and 7702 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:57,080 INFO L93 Difference]: Finished difference Result 7979 states and 11561 transitions. [2023-12-21 22:13:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:57,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:57,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:57,087 INFO L225 Difference]: With dead ends: 7979 [2023-12-21 22:13:57,087 INFO L226 Difference]: Without dead ends: 5094 [2023-12-21 22:13:57,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:57,090 INFO L413 NwaCegarLoop]: 4442 mSDtfsCounter, 47 mSDsluCounter, 8875 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 13317 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:57,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 13317 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:13:57,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5094 states. [2023-12-21 22:13:57,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5094 to 5030. [2023-12-21 22:13:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5030 states, 4894 states have (on average 1.5396403759705761) internal successors, (7535), 4897 states have internal predecessors, (7535), 73 states have call successors, (73), 60 states have call predecessors, (73), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-21 22:13:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5030 states to 5030 states and 7682 transitions. [2023-12-21 22:13:57,202 INFO L78 Accepts]: Start accepts. Automaton has 5030 states and 7682 transitions. Word has length 171 [2023-12-21 22:13:57,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:57,202 INFO L495 AbstractCegarLoop]: Abstraction has 5030 states and 7682 transitions. [2023-12-21 22:13:57,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:57,202 INFO L276 IsEmpty]: Start isEmpty. Operand 5030 states and 7682 transitions. [2023-12-21 22:13:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:57,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:57,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:57,208 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 (35)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:57,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /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 [2023-12-21 22:13:57,408 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:57,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:57,408 INFO L85 PathProgramCache]: Analyzing trace with hash 924559702, now seen corresponding path program 1 times [2023-12-21 22:13:57,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:57,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641115518] [2023-12-21 22:13:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:57,409 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 [2023-12-21 22:13:57,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:57,410 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2023-12-21 22:13:57,411 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 (36)] Waiting until timeout for monitored process [2023-12-21 22:13:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:57,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:57,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:57,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:57,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:57,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641115518] [2023-12-21 22:13:57,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641115518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:57,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:57,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:57,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107762990] [2023-12-21 22:13:57,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:57,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:13:57,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:57,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:13:57,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:57,544 INFO L87 Difference]: Start difference. First operand 5030 states and 7682 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:57,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:57,772 INFO L93 Difference]: Finished difference Result 7975 states and 11505 transitions. [2023-12-21 22:13:57,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:57,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:57,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:57,779 INFO L225 Difference]: With dead ends: 7975 [2023-12-21 22:13:57,779 INFO L226 Difference]: Without dead ends: 5086 [2023-12-21 22:13:57,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:57,783 INFO L413 NwaCegarLoop]: 4442 mSDtfsCounter, 38 mSDsluCounter, 8876 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 13318 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:57,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 13318 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:13:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5086 states. [2023-12-21 22:13:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5086 to 5034. [2023-12-21 22:13:57,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5034 states, 4898 states have (on average 1.5342997141690486) internal successors, (7515), 4901 states have internal predecessors, (7515), 73 states have call successors, (73), 60 states have call predecessors, (73), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-21 22:13:57,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 7662 transitions. [2023-12-21 22:13:57,893 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 7662 transitions. Word has length 171 [2023-12-21 22:13:57,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:57,893 INFO L495 AbstractCegarLoop]: Abstraction has 5034 states and 7662 transitions. [2023-12-21 22:13:57,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 7662 transitions. [2023-12-21 22:13:57,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:57,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:57,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:57,899 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 (36)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:58,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /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 [2023-12-21 22:13:58,095 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:58,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:58,095 INFO L85 PathProgramCache]: Analyzing trace with hash 431933528, now seen corresponding path program 1 times [2023-12-21 22:13:58,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:58,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032441444] [2023-12-21 22:13:58,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:58,096 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 [2023-12-21 22:13:58,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:58,097 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2023-12-21 22:13:58,098 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 (37)] Waiting until timeout for monitored process [2023-12-21 22:13:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:58,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:58,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:58,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:58,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:58,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032441444] [2023-12-21 22:13:58,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032441444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:58,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:58,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:58,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623789118] [2023-12-21 22:13:58,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:58,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:13:58,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:58,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:13:58,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:58,237 INFO L87 Difference]: Start difference. First operand 5034 states and 7662 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:58,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:58,419 INFO L93 Difference]: Finished difference Result 7971 states and 11449 transitions. [2023-12-21 22:13:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:58,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:58,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:58,425 INFO L225 Difference]: With dead ends: 7971 [2023-12-21 22:13:58,426 INFO L226 Difference]: Without dead ends: 5078 [2023-12-21 22:13:58,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:58,429 INFO L413 NwaCegarLoop]: 4442 mSDtfsCounter, 29 mSDsluCounter, 8877 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 13319 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:58,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 13319 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:13:58,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2023-12-21 22:13:58,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 5038. [2023-12-21 22:13:58,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5038 states, 4902 states have (on average 1.528967768257854) internal successors, (7495), 4905 states have internal predecessors, (7495), 73 states have call successors, (73), 60 states have call predecessors, (73), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-21 22:13:58,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5038 states to 5038 states and 7642 transitions. [2023-12-21 22:13:58,540 INFO L78 Accepts]: Start accepts. Automaton has 5038 states and 7642 transitions. Word has length 171 [2023-12-21 22:13:58,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:58,540 INFO L495 AbstractCegarLoop]: Abstraction has 5038 states and 7642 transitions. [2023-12-21 22:13:58,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:58,540 INFO L276 IsEmpty]: Start isEmpty. Operand 5038 states and 7642 transitions. [2023-12-21 22:13:58,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:58,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:58,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:58,546 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 (37)] Forceful destruction successful, exit code 0 [2023-12-21 22:13:58,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /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 [2023-12-21 22:13:58,746 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:58,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:58,746 INFO L85 PathProgramCache]: Analyzing trace with hash 377540630, now seen corresponding path program 1 times [2023-12-21 22:13:58,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:58,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70637161] [2023-12-21 22:13:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:58,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:13:58,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:58,747 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-12-21 22:13:58,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-21 22:13:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:58,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:13:58,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:58,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:58,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:58,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70637161] [2023-12-21 22:13:58,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70637161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:58,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:58,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:13:58,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202967818] [2023-12-21 22:13:58,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:58,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:13:58,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:58,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:13:58,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:58,886 INFO L87 Difference]: Start difference. First operand 5038 states and 7642 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:59,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:59,073 INFO L93 Difference]: Finished difference Result 7967 states and 11393 transitions. [2023-12-21 22:13:59,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:13:59,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:59,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:59,080 INFO L225 Difference]: With dead ends: 7967 [2023-12-21 22:13:59,080 INFO L226 Difference]: Without dead ends: 5070 [2023-12-21 22:13:59,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:13:59,083 INFO L413 NwaCegarLoop]: 4442 mSDtfsCounter, 20 mSDsluCounter, 8878 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 13320 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:59,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 13320 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:13:59,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5070 states. [2023-12-21 22:13:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5070 to 5042. [2023-12-21 22:13:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5042 states, 4906 states have (on average 1.5236445169180595) internal successors, (7475), 4909 states have internal predecessors, (7475), 73 states have call successors, (73), 60 states have call predecessors, (73), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-21 22:13:59,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 7622 transitions. [2023-12-21 22:13:59,246 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 7622 transitions. Word has length 171 [2023-12-21 22:13:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:13:59,247 INFO L495 AbstractCegarLoop]: Abstraction has 5042 states and 7622 transitions. [2023-12-21 22:13:59,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:59,247 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 7622 transitions. [2023-12-21 22:13:59,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:13:59,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:13:59,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:13:59,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2023-12-21 22:13:59,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /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 [2023-12-21 22:13:59,449 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:13:59,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:13:59,449 INFO L85 PathProgramCache]: Analyzing trace with hash 938240408, now seen corresponding path program 1 times [2023-12-21 22:13:59,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:13:59,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149318850] [2023-12-21 22:13:59,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:13:59,450 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 [2023-12-21 22:13:59,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:13:59,451 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2023-12-21 22:13:59,451 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 (39)] Waiting until timeout for monitored process [2023-12-21 22:13:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:13:59,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:13:59,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:13:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:13:59,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:13:59,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:13:59,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149318850] [2023-12-21 22:13:59,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149318850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:13:59,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:13:59,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 22:13:59,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196550966] [2023-12-21 22:13:59,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:13:59,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:13:59,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:13:59,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:13:59,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:13:59,701 INFO L87 Difference]: Start difference. First operand 5042 states and 7622 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:13:59,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:13:59,970 INFO L93 Difference]: Finished difference Result 10633 states and 14656 transitions. [2023-12-21 22:13:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:13:59,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:13:59,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:13:59,987 INFO L225 Difference]: With dead ends: 10633 [2023-12-21 22:13:59,987 INFO L226 Difference]: Without dead ends: 7732 [2023-12-21 22:13:59,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:13:59,992 INFO L413 NwaCegarLoop]: 4503 mSDtfsCounter, 4364 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4364 SdHoareTripleChecker+Valid, 4948 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:13:59,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4364 Valid, 4948 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:13:59,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7732 states. [2023-12-21 22:14:00,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7732 to 7728. [2023-12-21 22:14:00,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7728 states, 7470 states have (on average 1.4278447121820617) internal successors, (10666), 7474 states have internal predecessors, (10666), 138 states have call successors, (138), 116 states have call predecessors, (138), 118 states have return successors, (140), 138 states have call predecessors, (140), 138 states have call successors, (140) [2023-12-21 22:14:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7728 states to 7728 states and 10944 transitions. [2023-12-21 22:14:00,194 INFO L78 Accepts]: Start accepts. Automaton has 7728 states and 10944 transitions. Word has length 171 [2023-12-21 22:14:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:14:00,194 INFO L495 AbstractCegarLoop]: Abstraction has 7728 states and 10944 transitions. [2023-12-21 22:14:00,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:14:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 7728 states and 10944 transitions. [2023-12-21 22:14:00,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:14:00,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:14:00,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:14:00,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2023-12-21 22:14:00,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /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 [2023-12-21 22:14:00,396 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:14:00,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:14:00,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1178507737, now seen corresponding path program 1 times [2023-12-21 22:14:00,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:14:00,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096710539] [2023-12-21 22:14:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:14:00,397 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 [2023-12-21 22:14:00,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:14:00,398 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2023-12-21 22:14:00,401 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 (40)] Waiting until timeout for monitored process [2023-12-21 22:14:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:14:00,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:14:00,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:14:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:14:00,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:14:00,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:14:00,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096710539] [2023-12-21 22:14:00,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096710539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:14:00,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:14:00,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:14:00,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939828043] [2023-12-21 22:14:00,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:14:00,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:14:00,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:14:00,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:14:00,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:14:00,540 INFO L87 Difference]: Start difference. First operand 7728 states and 10944 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:14:00,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:14:00,850 INFO L93 Difference]: Finished difference Result 13575 states and 18349 transitions. [2023-12-21 22:14:00,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:14:00,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:14:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:14:00,859 INFO L225 Difference]: With dead ends: 13575 [2023-12-21 22:14:00,859 INFO L226 Difference]: Without dead ends: 7988 [2023-12-21 22:14:00,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:14:00,864 INFO L413 NwaCegarLoop]: 4445 mSDtfsCounter, 11 mSDsluCounter, 8884 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 13329 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:14:00,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 13329 Invalid, 148 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:14:00,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7988 states. [2023-12-21 22:14:01,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7988 to 7780. [2023-12-21 22:14:01,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7780 states, 7522 states have (on average 1.4216963573517682) internal successors, (10694), 7526 states have internal predecessors, (10694), 138 states have call successors, (138), 116 states have call predecessors, (138), 118 states have return successors, (140), 138 states have call predecessors, (140), 138 states have call successors, (140) [2023-12-21 22:14:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7780 states to 7780 states and 10972 transitions. [2023-12-21 22:14:01,060 INFO L78 Accepts]: Start accepts. Automaton has 7780 states and 10972 transitions. Word has length 171 [2023-12-21 22:14:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:14:01,060 INFO L495 AbstractCegarLoop]: Abstraction has 7780 states and 10972 transitions. [2023-12-21 22:14:01,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:14:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 7780 states and 10972 transitions. [2023-12-21 22:14:01,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:14:01,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:14:01,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:14:01,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-12-21 22:14:01,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /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 [2023-12-21 22:14:01,262 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:14:01,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:14:01,262 INFO L85 PathProgramCache]: Analyzing trace with hash 2054526743, now seen corresponding path program 1 times [2023-12-21 22:14:01,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:14:01,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86428802] [2023-12-21 22:14:01,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:14:01,263 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 [2023-12-21 22:14:01,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:14:01,264 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2023-12-21 22:14:01,265 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 (41)] Waiting until timeout for monitored process [2023-12-21 22:14:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:14:01,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 22:14:01,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:14:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:14:01,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:14:01,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:14:01,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86428802] [2023-12-21 22:14:01,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86428802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:14:01,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:14:01,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:14:01,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597085688] [2023-12-21 22:14:01,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:14:01,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:14:01,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:14:01,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:14:01,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:14:01,532 INFO L87 Difference]: Start difference. First operand 7780 states and 10972 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:14:02,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:14:02,170 INFO L93 Difference]: Finished difference Result 13420 states and 17965 transitions. [2023-12-21 22:14:02,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:14:02,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:14:02,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:14:02,180 INFO L225 Difference]: With dead ends: 13420 [2023-12-21 22:14:02,180 INFO L226 Difference]: Without dead ends: 7780 [2023-12-21 22:14:02,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:14:02,185 INFO L413 NwaCegarLoop]: 4265 mSDtfsCounter, 4561 mSDsluCounter, 8414 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4581 SdHoareTripleChecker+Valid, 12679 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:14:02,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4581 Valid, 12679 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:14:02,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2023-12-21 22:14:02,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 7780. [2023-12-21 22:14:02,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7780 states, 7522 states have (on average 1.4198351502260038) internal successors, (10680), 7526 states have internal predecessors, (10680), 138 states have call successors, (138), 116 states have call predecessors, (138), 118 states have return successors, (140), 138 states have call predecessors, (140), 138 states have call successors, (140) [2023-12-21 22:14:02,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7780 states to 7780 states and 10958 transitions. [2023-12-21 22:14:02,387 INFO L78 Accepts]: Start accepts. Automaton has 7780 states and 10958 transitions. Word has length 171 [2023-12-21 22:14:02,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:14:02,387 INFO L495 AbstractCegarLoop]: Abstraction has 7780 states and 10958 transitions. [2023-12-21 22:14:02,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:14:02,387 INFO L276 IsEmpty]: Start isEmpty. Operand 7780 states and 10958 transitions. [2023-12-21 22:14:02,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:14:02,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:14:02,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:14:02,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-12-21 22:14:02,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /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 [2023-12-21 22:14:02,589 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:14:02,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:14:02,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1157133465, now seen corresponding path program 1 times [2023-12-21 22:14:02,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:14:02,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365475016] [2023-12-21 22:14:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:14:02,590 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 [2023-12-21 22:14:02,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:14:02,591 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2023-12-21 22:14:02,591 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 (42)] Waiting until timeout for monitored process [2023-12-21 22:14:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:14:02,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 22:14:02,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:14:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:14:02,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:14:02,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:14:02,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365475016] [2023-12-21 22:14:02,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365475016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:14:02,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:14:02,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:14:02,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862492336] [2023-12-21 22:14:02,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:14:02,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:14:02,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:14:02,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:14:02,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:14:02,864 INFO L87 Difference]: Start difference. First operand 7780 states and 10958 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:14:03,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:14:03,467 INFO L93 Difference]: Finished difference Result 13420 states and 17937 transitions. [2023-12-21 22:14:03,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:14:03,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:14:03,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:14:03,475 INFO L225 Difference]: With dead ends: 13420 [2023-12-21 22:14:03,475 INFO L226 Difference]: Without dead ends: 7780 [2023-12-21 22:14:03,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:14:03,478 INFO L413 NwaCegarLoop]: 4262 mSDtfsCounter, 4548 mSDsluCounter, 8410 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4568 SdHoareTripleChecker+Valid, 12672 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:14:03,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4568 Valid, 12672 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:14:03,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2023-12-21 22:14:03,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 7780. [2023-12-21 22:14:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7780 states, 7522 states have (on average 1.4179739431002394) internal successors, (10666), 7526 states have internal predecessors, (10666), 138 states have call successors, (138), 116 states have call predecessors, (138), 118 states have return successors, (140), 138 states have call predecessors, (140), 138 states have call successors, (140) [2023-12-21 22:14:03,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7780 states to 7780 states and 10944 transitions. [2023-12-21 22:14:03,681 INFO L78 Accepts]: Start accepts. Automaton has 7780 states and 10944 transitions. Word has length 171 [2023-12-21 22:14:03,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:14:03,681 INFO L495 AbstractCegarLoop]: Abstraction has 7780 states and 10944 transitions. [2023-12-21 22:14:03,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:14:03,681 INFO L276 IsEmpty]: Start isEmpty. Operand 7780 states and 10944 transitions. [2023-12-21 22:14:03,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:14:03,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:14:03,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:14:03,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-12-21 22:14:03,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /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 [2023-12-21 22:14:03,884 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:14:03,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:14:03,885 INFO L85 PathProgramCache]: Analyzing trace with hash 313127963, now seen corresponding path program 1 times [2023-12-21 22:14:03,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:14:03,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620587522] [2023-12-21 22:14:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:14:03,885 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 [2023-12-21 22:14:03,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:14:03,886 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2023-12-21 22:14:03,887 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 (43)] Waiting until timeout for monitored process [2023-12-21 22:14:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:14:04,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 22:14:04,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:14:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:14:04,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:14:04,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:14:04,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620587522] [2023-12-21 22:14:04,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620587522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:14:04,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:14:04,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:14:04,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644723565] [2023-12-21 22:14:04,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:14:04,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:14:04,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:14:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:14:04,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:14:04,155 INFO L87 Difference]: Start difference. First operand 7780 states and 10944 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:14:04,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:14:04,909 INFO L93 Difference]: Finished difference Result 14020 states and 18728 transitions. [2023-12-21 22:14:04,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 22:14:04,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:14:04,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:14:04,920 INFO L225 Difference]: With dead ends: 14020 [2023-12-21 22:14:04,920 INFO L226 Difference]: Without dead ends: 8380 [2023-12-21 22:14:04,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 22:14:04,927 INFO L413 NwaCegarLoop]: 4261 mSDtfsCounter, 4707 mSDsluCounter, 8406 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4727 SdHoareTripleChecker+Valid, 12667 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:14:04,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4727 Valid, 12667 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:14:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8380 states. [2023-12-21 22:14:05,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8380 to 8138. [2023-12-21 22:14:05,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8138 states, 7868 states have (on average 1.400355871886121) internal successors, (11018), 7872 states have internal predecessors, (11018), 142 states have call successors, (142), 124 states have call predecessors, (142), 126 states have return successors, (144), 142 states have call predecessors, (144), 142 states have call successors, (144) [2023-12-21 22:14:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8138 states to 8138 states and 11304 transitions. [2023-12-21 22:14:05,166 INFO L78 Accepts]: Start accepts. Automaton has 8138 states and 11304 transitions. Word has length 171 [2023-12-21 22:14:05,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:14:05,166 INFO L495 AbstractCegarLoop]: Abstraction has 8138 states and 11304 transitions. [2023-12-21 22:14:05,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:14:05,166 INFO L276 IsEmpty]: Start isEmpty. Operand 8138 states and 11304 transitions. [2023-12-21 22:14:05,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:14:05,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:14:05,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:14:05,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2023-12-21 22:14:05,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /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 [2023-12-21 22:14:05,372 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:14:05,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:14:05,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2058611299, now seen corresponding path program 1 times [2023-12-21 22:14:05,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:14:05,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298298758] [2023-12-21 22:14:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:14:05,373 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 [2023-12-21 22:14:05,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:14:05,373 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2023-12-21 22:14:05,374 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 (44)] Waiting until timeout for monitored process [2023-12-21 22:14:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:14:05,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 22:14:05,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:14:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:14:05,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:14:05,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:14:05,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298298758] [2023-12-21 22:14:05,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298298758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:14:05,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:14:05,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:14:05,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153613530] [2023-12-21 22:14:05,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:14:05,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:14:05,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:14:05,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:14:05,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:14:05,640 INFO L87 Difference]: Start difference. First operand 8138 states and 11304 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:14:06,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:14:06,350 INFO L93 Difference]: Finished difference Result 14446 states and 19032 transitions. [2023-12-21 22:14:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 22:14:06,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-21 22:14:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:14:06,360 INFO L225 Difference]: With dead ends: 14446 [2023-12-21 22:14:06,360 INFO L226 Difference]: Without dead ends: 8448 [2023-12-21 22:14:06,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 22:14:06,367 INFO L413 NwaCegarLoop]: 4258 mSDtfsCounter, 4633 mSDsluCounter, 8402 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 12660 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:14:06,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4653 Valid, 12660 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:14:06,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8448 states. [2023-12-21 22:14:06,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8448 to 8428. [2023-12-21 22:14:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 8154 states have (on average 1.385822909001717) internal successors, (11300), 8158 states have internal predecessors, (11300), 142 states have call successors, (142), 128 states have call predecessors, (142), 130 states have return successors, (144), 142 states have call predecessors, (144), 142 states have call successors, (144) [2023-12-21 22:14:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 11586 transitions. [2023-12-21 22:14:06,620 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 11586 transitions. Word has length 171 [2023-12-21 22:14:06,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:14:06,620 INFO L495 AbstractCegarLoop]: Abstraction has 8428 states and 11586 transitions. [2023-12-21 22:14:06,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:14:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 11586 transitions. [2023-12-21 22:14:06,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 22:14:06,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:14:06,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:14:06,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2023-12-21 22:14:06,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /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 [2023-12-21 22:14:06,825 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:14:06,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:14:06,825 INFO L85 PathProgramCache]: Analyzing trace with hash 547412255, now seen corresponding path program 1 times [2023-12-21 22:14:06,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:14:06,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138639006] [2023-12-21 22:14:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:14:06,826 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 [2023-12-21 22:14:06,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:14:06,827 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2023-12-21 22:14:06,827 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 (45)] Waiting until timeout for monitored process [2023-12-21 22:14:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:14:06,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:14:06,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:14:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:14:07,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:14:07,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:14:07,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138639006] [2023-12-21 22:14:07,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138639006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:14:07,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:14:07,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 22:14:07,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633598483] [2023-12-21 22:14:07,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:14:07,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:14:07,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:14:07,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:14:07,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:14:07,095 INFO L87 Difference]: Start difference. First operand 8428 states and 11586 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 22:14:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:14:07,602 INFO L93 Difference]: Finished difference Result 20921 states and 26790 transitions. [2023-12-21 22:14:07,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:14:07,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 171 [2023-12-21 22:14:07,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:14:07,619 INFO L225 Difference]: With dead ends: 20921 [2023-12-21 22:14:07,619 INFO L226 Difference]: Without dead ends: 14634 [2023-12-21 22:14:07,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:14:07,626 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 4299 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4299 SdHoareTripleChecker+Valid, 4860 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:14:07,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4299 Valid, 4860 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:14:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14634 states. [2023-12-21 22:14:08,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14634 to 14630. [2023-12-21 22:14:08,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14630 states, 14088 states have (on average 1.3097671777399205) internal successors, (18452), 14098 states have internal predecessors, (18452), 280 states have call successors, (280), 256 states have call predecessors, (280), 260 states have return successors, (284), 276 states have call predecessors, (284), 280 states have call successors, (284) [2023-12-21 22:14:08,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14630 states to 14630 states and 19016 transitions. [2023-12-21 22:14:08,098 INFO L78 Accepts]: Start accepts. Automaton has 14630 states and 19016 transitions. Word has length 171 [2023-12-21 22:14:08,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:14:08,099 INFO L495 AbstractCegarLoop]: Abstraction has 14630 states and 19016 transitions. [2023-12-21 22:14:08,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 22:14:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 14630 states and 19016 transitions. [2023-12-21 22:14:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-21 22:14:08,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:14:08,105 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:14:08,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Ended with exit code 0 [2023-12-21 22:14:08,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /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 [2023-12-21 22:14:08,310 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:14:08,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:14:08,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1737809409, now seen corresponding path program 1 times [2023-12-21 22:14:08,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:14:08,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721602773] [2023-12-21 22:14:08,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:14:08,311 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 [2023-12-21 22:14:08,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:14:08,312 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2023-12-21 22:14:08,313 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 (46)] Waiting until timeout for monitored process [2023-12-21 22:14:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:14:08,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:14:08,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:14:08,710 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 22:14:08,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:14:08,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:14:08,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721602773] [2023-12-21 22:14:08,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721602773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:14:08,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:14:08,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:14:08,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158580610] [2023-12-21 22:14:08,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:14:08,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:14:08,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:14:08,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:14:08,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:14:08,712 INFO L87 Difference]: Start difference. First operand 14630 states and 19016 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:14:10,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:14:10,016 INFO L93 Difference]: Finished difference Result 39354 states and 48719 transitions. [2023-12-21 22:14:10,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:14:10,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 275 [2023-12-21 22:14:10,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:14:10,054 INFO L225 Difference]: With dead ends: 39354 [2023-12-21 22:14:10,055 INFO L226 Difference]: Without dead ends: 26866 [2023-12-21 22:14:10,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:14:10,065 INFO L413 NwaCegarLoop]: 4543 mSDtfsCounter, 4650 mSDsluCounter, 4754 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4655 SdHoareTripleChecker+Valid, 9297 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:14:10,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4655 Valid, 9297 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:14:10,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26866 states. [2023-12-21 22:14:10,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26866 to 26864. [2023-12-21 22:14:10,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26864 states, 25799 states have (on average 1.260630256986705) internal successors, (32523), 25826 states have internal predecessors, (32523), 543 states have call successors, (543), 496 states have call predecessors, (543), 520 states have return successors, (591), 543 states have call predecessors, (591), 543 states have call successors, (591) [2023-12-21 22:14:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26864 states to 26864 states and 33657 transitions. [2023-12-21 22:14:10,999 INFO L78 Accepts]: Start accepts. Automaton has 26864 states and 33657 transitions. Word has length 275 [2023-12-21 22:14:11,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:14:11,000 INFO L495 AbstractCegarLoop]: Abstraction has 26864 states and 33657 transitions. [2023-12-21 22:14:11,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:14:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 26864 states and 33657 transitions. [2023-12-21 22:14:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-21 22:14:11,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:14:11,013 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:14:11,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2023-12-21 22:14:11,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /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 [2023-12-21 22:14:11,219 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:14:11,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:14:11,220 INFO L85 PathProgramCache]: Analyzing trace with hash 939175101, now seen corresponding path program 1 times [2023-12-21 22:14:11,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:14:11,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513335606] [2023-12-21 22:14:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:14:11,220 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 [2023-12-21 22:14:11,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:14:11,221 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2023-12-21 22:14:11,222 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 (47)] Waiting until timeout for monitored process [2023-12-21 22:14:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:14:11,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:14:11,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:14:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-21 22:14:11,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:14:11,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:14:11,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513335606] [2023-12-21 22:14:11,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513335606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:14:11,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:14:11,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:14:11,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765816209] [2023-12-21 22:14:11,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:14:11,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:14:11,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:14:11,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:14:11,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:14:11,400 INFO L87 Difference]: Start difference. First operand 26864 states and 33657 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 22:14:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:14:12,383 INFO L93 Difference]: Finished difference Result 51570 states and 63290 transitions. [2023-12-21 22:14:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:14:12,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 275 [2023-12-21 22:14:12,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:14:12,421 INFO L225 Difference]: With dead ends: 51570 [2023-12-21 22:14:12,421 INFO L226 Difference]: Without dead ends: 26848 [2023-12-21 22:14:12,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:14:12,441 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 513 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 8386 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:14:12,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 8386 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:14:12,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26848 states. [2023-12-21 22:14:13,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26848 to 26848. [2023-12-21 22:14:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26848 states, 25786 states have (on average 1.26033506553944) internal successors, (32499), 25812 states have internal predecessors, (32499), 540 states have call successors, (540), 496 states have call predecessors, (540), 520 states have return successors, (588), 540 states have call predecessors, (588), 540 states have call successors, (588) [2023-12-21 22:14:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26848 states to 26848 states and 33627 transitions. [2023-12-21 22:14:13,486 INFO L78 Accepts]: Start accepts. Automaton has 26848 states and 33627 transitions. Word has length 275 [2023-12-21 22:14:13,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:14:13,486 INFO L495 AbstractCegarLoop]: Abstraction has 26848 states and 33627 transitions. [2023-12-21 22:14:13,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 22:14:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 26848 states and 33627 transitions. [2023-12-21 22:14:13,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-21 22:14:13,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:14:13,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:14:13,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2023-12-21 22:14:13,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /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 [2023-12-21 22:14:13,701 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:14:13,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:14:13,702 INFO L85 PathProgramCache]: Analyzing trace with hash 560538586, now seen corresponding path program 1 times [2023-12-21 22:14:13,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:14:13,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412369048] [2023-12-21 22:14:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:14:13,702 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 [2023-12-21 22:14:13,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:14:13,703 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2023-12-21 22:14:13,704 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 (48)] Waiting until timeout for monitored process [2023-12-21 22:14:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:14:13,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:14:13,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:14:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 22:14:14,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:14:14,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:14:14,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412369048] [2023-12-21 22:14:14,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412369048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:14:14,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:14:14,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:14:14,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664212800] [2023-12-21 22:14:14,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:14:14,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:14:14,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:14:14,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:14:14,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:14:14,093 INFO L87 Difference]: Start difference. First operand 26848 states and 33627 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:14:16,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:14:16,365 INFO L93 Difference]: Finished difference Result 75191 states and 91576 transitions. [2023-12-21 22:14:16,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:14:16,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 277 [2023-12-21 22:14:16,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:14:16,453 INFO L225 Difference]: With dead ends: 75191 [2023-12-21 22:14:16,453 INFO L226 Difference]: Without dead ends: 50485 [2023-12-21 22:14:16,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:14:16,481 INFO L413 NwaCegarLoop]: 4527 mSDtfsCounter, 4645 mSDsluCounter, 4736 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4650 SdHoareTripleChecker+Valid, 9263 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:14:16,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4650 Valid, 9263 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:14:16,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50485 states. [2023-12-21 22:14:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50485 to 50483. [2023-12-21 22:14:18,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50483 states, 48410 states have (on average 1.232472629621979) internal successors, (59664), 48469 states have internal predecessors, (59664), 1047 states have call successors, (1047), 960 states have call predecessors, (1047), 1024 states have return successors, (1183), 1055 states have call predecessors, (1183), 1047 states have call successors, (1183) [2023-12-21 22:14:18,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50483 states to 50483 states and 61894 transitions. [2023-12-21 22:14:18,527 INFO L78 Accepts]: Start accepts. Automaton has 50483 states and 61894 transitions. Word has length 277 [2023-12-21 22:14:18,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:14:18,527 INFO L495 AbstractCegarLoop]: Abstraction has 50483 states and 61894 transitions. [2023-12-21 22:14:18,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:14:18,527 INFO L276 IsEmpty]: Start isEmpty. Operand 50483 states and 61894 transitions. [2023-12-21 22:14:18,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-21 22:14:18,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:14:18,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:14:18,552 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 (48)] Forceful destruction successful, exit code 0 [2023-12-21 22:14:18,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /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 [2023-12-21 22:14:18,750 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:14:18,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:14:18,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1942679772, now seen corresponding path program 1 times [2023-12-21 22:14:18,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:14:18,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641805152] [2023-12-21 22:14:18,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:14:18,751 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 [2023-12-21 22:14:18,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:14:18,752 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2023-12-21 22:14:18,753 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 (49)] Waiting until timeout for monitored process [2023-12-21 22:14:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:14:18,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:14:18,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:14:18,940 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-21 22:14:18,940 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:14:18,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:14:18,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641805152] [2023-12-21 22:14:18,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641805152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:14:18,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:14:18,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:14:18,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279427295] [2023-12-21 22:14:18,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:14:18,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:14:18,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:14:18,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:14:18,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:14:18,941 INFO L87 Difference]: Start difference. First operand 50483 states and 61894 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 22:14:21,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:14:21,219 INFO L93 Difference]: Finished difference Result 98809 states and 119767 transitions. [2023-12-21 22:14:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:14:21,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 277 [2023-12-21 22:14:21,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:14:21,289 INFO L225 Difference]: With dead ends: 98809 [2023-12-21 22:14:21,289 INFO L226 Difference]: Without dead ends: 50468 [2023-12-21 22:14:21,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:14:21,314 INFO L413 NwaCegarLoop]: 4428 mSDtfsCounter, 511 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 8385 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:14:21,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 8385 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:14:21,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50468 states. [2023-12-21 22:14:23,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50468 to 50468. [2023-12-21 22:14:23,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50468 states, 48398 states have (on average 1.2323236497375925) internal successors, (59642), 48456 states have internal predecessors, (59642), 1044 states have call successors, (1044), 960 states have call predecessors, (1044), 1024 states have return successors, (1180), 1052 states have call predecessors, (1180), 1044 states have call successors, (1180) [2023-12-21 22:14:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50468 states to 50468 states and 61866 transitions. [2023-12-21 22:14:23,151 INFO L78 Accepts]: Start accepts. Automaton has 50468 states and 61866 transitions. Word has length 277 [2023-12-21 22:14:23,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:14:23,151 INFO L495 AbstractCegarLoop]: Abstraction has 50468 states and 61866 transitions. [2023-12-21 22:14:23,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 22:14:23,151 INFO L276 IsEmpty]: Start isEmpty. Operand 50468 states and 61866 transitions. [2023-12-21 22:14:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-21 22:14:23,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:14:23,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:14:23,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Ended with exit code 0 [2023-12-21 22:14:23,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /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 [2023-12-21 22:14:23,368 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:14:23,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:14:23,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1592471103, now seen corresponding path program 1 times [2023-12-21 22:14:23,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:14:23,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696979963] [2023-12-21 22:14:23,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:14:23,369 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 [2023-12-21 22:14:23,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:14:23,370 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2023-12-21 22:14:23,371 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 (50)] Waiting until timeout for monitored process [2023-12-21 22:14:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:14:23,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:14:23,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:14:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 22:14:23,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:14:23,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:14:23,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696979963] [2023-12-21 22:14:23,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696979963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:14:23,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:14:23,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:14:23,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102390389] [2023-12-21 22:14:23,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:14:23,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:14:23,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:14:23,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:14:23,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:14:23,758 INFO L87 Difference]: Start difference. First operand 50468 states and 61866 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:14:27,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:14:27,624 INFO L93 Difference]: Finished difference Result 145016 states and 175052 transitions. [2023-12-21 22:14:27,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:14:27,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 279 [2023-12-21 22:14:27,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:14:27,761 INFO L225 Difference]: With dead ends: 145016 [2023-12-21 22:14:27,761 INFO L226 Difference]: Without dead ends: 96690 [2023-12-21 22:14:27,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:14:27,789 INFO L413 NwaCegarLoop]: 4312 mSDtfsCounter, 4667 mSDsluCounter, 4550 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4673 SdHoareTripleChecker+Valid, 8862 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:14:27,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4673 Valid, 8862 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:14:27,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96690 states. [2023-12-21 22:14:31,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96690 to 96688. [2023-12-21 22:14:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96688 states, 92650 states have (on average 1.216902320561252) internal successors, (112746), 92780 states have internal predecessors, (112746), 2020 states have call successors, (2020), 1856 states have call predecessors, (2020), 2016 states have return successors, (2348), 2052 states have call predecessors, (2348), 2020 states have call successors, (2348) [2023-12-21 22:14:31,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96688 states to 96688 states and 117114 transitions. [2023-12-21 22:14:31,665 INFO L78 Accepts]: Start accepts. Automaton has 96688 states and 117114 transitions. Word has length 279 [2023-12-21 22:14:31,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:14:31,665 INFO L495 AbstractCegarLoop]: Abstraction has 96688 states and 117114 transitions. [2023-12-21 22:14:31,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:14:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand 96688 states and 117114 transitions. [2023-12-21 22:14:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-21 22:14:31,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:14:31,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:14:31,699 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 (50)] Forceful destruction successful, exit code 0 [2023-12-21 22:14:31,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /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 [2023-12-21 22:14:31,896 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:14:31,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:14:31,897 INFO L85 PathProgramCache]: Analyzing trace with hash 31624922, now seen corresponding path program 1 times [2023-12-21 22:14:31,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:14:31,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021132631] [2023-12-21 22:14:31,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:14:31,897 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 [2023-12-21 22:14:31,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:14:31,898 INFO L229 MonitoredProcess]: Starting monitored process 51 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) [2023-12-21 22:14:31,899 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 (51)] Waiting until timeout for monitored process [2023-12-21 22:14:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:14:32,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:14:32,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:14:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-21 22:14:32,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:14:32,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:14:32,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021132631] [2023-12-21 22:14:32,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021132631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:14:32,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:14:32,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:14:32,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877046904] [2023-12-21 22:14:32,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:14:32,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:14:32,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:14:32,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:14:32,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:14:32,290 INFO L87 Difference]: Start difference. First operand 96688 states and 117114 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:14:39,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:14:39,600 INFO L93 Difference]: Finished difference Result 332009 states and 397845 transitions. [2023-12-21 22:14:39,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:14:39,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 281 [2023-12-21 22:14:39,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:14:40,106 INFO L225 Difference]: With dead ends: 332009 [2023-12-21 22:14:40,106 INFO L226 Difference]: Without dead ends: 237463 [2023-12-21 22:14:40,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:14:40,182 INFO L413 NwaCegarLoop]: 4532 mSDtfsCounter, 4647 mSDsluCounter, 4719 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 9251 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:14:40,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4653 Valid, 9251 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:14:40,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237463 states. [2023-12-21 22:14:48,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237463 to 233525. [2023-12-21 22:14:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233525 states, 224108 states have (on average 1.203973084405733) internal successors, (269820), 225199 states have internal predecessors, (269820), 3911 states have call successors, (3911), 3584 states have call predecessors, (3911), 5504 states have return successors, (6224), 4743 states have call predecessors, (6224), 3911 states have call successors, (6224) [2023-12-21 22:14:48,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233525 states to 233525 states and 279955 transitions. [2023-12-21 22:14:48,725 INFO L78 Accepts]: Start accepts. Automaton has 233525 states and 279955 transitions. Word has length 281 [2023-12-21 22:14:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:14:48,725 INFO L495 AbstractCegarLoop]: Abstraction has 233525 states and 279955 transitions. [2023-12-21 22:14:48,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:14:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand 233525 states and 279955 transitions. [2023-12-21 22:14:48,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-21 22:14:48,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:14:48,800 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:14:48,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2023-12-21 22:14:49,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /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 [2023-12-21 22:14:49,005 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:14:49,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:14:49,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1124410204, now seen corresponding path program 1 times [2023-12-21 22:14:49,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:14:49,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568217035] [2023-12-21 22:14:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:14:49,006 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 [2023-12-21 22:14:49,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:14:49,007 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2023-12-21 22:14:49,007 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 (52)] Waiting until timeout for monitored process [2023-12-21 22:14:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:14:49,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:14:49,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:14:49,194 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-21 22:14:49,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:14:49,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:14:49,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568217035] [2023-12-21 22:14:49,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568217035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:14:49,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:14:49,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:14:49,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588994242] [2023-12-21 22:14:49,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:14:49,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:14:49,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:14:49,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:14:49,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:14:49,196 INFO L87 Difference]: Start difference. First operand 233525 states and 279955 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 22:14:56,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:14:56,645 INFO L93 Difference]: Finished difference Result 464896 states and 555894 transitions. [2023-12-21 22:14:56,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:14:56,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 281 [2023-12-21 22:14:56,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:14:57,159 INFO L225 Difference]: With dead ends: 464896 [2023-12-21 22:14:57,159 INFO L226 Difference]: Without dead ends: 233512 [2023-12-21 22:14:57,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:14:57,297 INFO L413 NwaCegarLoop]: 4427 mSDtfsCounter, 508 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 8384 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:14:57,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 8384 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:14:57,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233512 states.