/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/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 07:55:57,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 07:55:57,208 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 07:55:57,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 07:55:57,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 07:55:57,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 07:55:57,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 07:55:57,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 07:55:57,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 07:55:57,248 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 07:55:57,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 07:55:57,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 07:55:57,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 07:55:57,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 07:55:57,249 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 07:55:57,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 07:55:57,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 07:55:57,250 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 07:55:57,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 07:55:57,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 07:55:57,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 07:55:57,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 07:55:57,252 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 07:55:57,252 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 07:55:57,252 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 07:55:57,252 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 07:55:57,252 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 07:55:57,253 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 07:55:57,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 07:55:57,253 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 07:55:57,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 07:55:57,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 07:55:57,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 07:55:57,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 07:55:57,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:55:57,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 07:55:57,254 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 07:55:57,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 07:55:57,255 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 07:55:57,255 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 07:55:57,255 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 07:55:57,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 07:55:57,255 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 07:55:57,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 07:55:57,255 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 07:55:57,256 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 07:55:57,256 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 07:55:57,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 07:55:57,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 07:55:57,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 07:55:57,486 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 07:55:57,488 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 07:55:57,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c [2023-12-25 07:55:58,476 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 07:55:58,646 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 07:55:58,646 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c [2023-12-25 07:55:58,657 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d55b2c08f/16695bff1ba74a42b72dce6f752d815a/FLAG878b51014 [2023-12-25 07:55:58,671 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d55b2c08f/16695bff1ba74a42b72dce6f752d815a [2023-12-25 07:55:58,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 07:55:58,674 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 07:55:58,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 07:55:58,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 07:55:58,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 07:55:58,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:55:58" (1/1) ... [2023-12-25 07:55:58,681 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7156fe7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:58, skipping insertion in model container [2023-12-25 07:55:58,681 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:55:58" (1/1) ... [2023-12-25 07:55:58,724 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 07:55:58,935 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c[26518,26531] [2023-12-25 07:55:58,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:55:58,951 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 07:55:59,007 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.8.1.ufo.UNBOUNDED.pals.c[26518,26531] [2023-12-25 07:55:59,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:55:59,021 INFO L206 MainTranslator]: Completed translation [2023-12-25 07:55:59,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59 WrapperNode [2023-12-25 07:55:59,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 07:55:59,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 07:55:59,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 07:55:59,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 07:55:59,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59" (1/1) ... [2023-12-25 07:55:59,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59" (1/1) ... [2023-12-25 07:55:59,086 INFO L138 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 497 [2023-12-25 07:55:59,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 07:55:59,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 07:55:59,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 07:55:59,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 07:55:59,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59" (1/1) ... [2023-12-25 07:55:59,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59" (1/1) ... [2023-12-25 07:55:59,101 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59" (1/1) ... [2023-12-25 07:55:59,137 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]. [2023-12-25 07:55:59,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59" (1/1) ... [2023-12-25 07:55:59,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59" (1/1) ... [2023-12-25 07:55:59,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59" (1/1) ... [2023-12-25 07:55:59,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59" (1/1) ... [2023-12-25 07:55:59,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59" (1/1) ... [2023-12-25 07:55:59,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59" (1/1) ... [2023-12-25 07:55:59,170 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 07:55:59,171 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 07:55:59,171 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 07:55:59,171 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 07:55:59,172 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59" (1/1) ... [2023-12-25 07:55:59,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:55:59,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 07:55:59,240 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) [2023-12-25 07:55:59,297 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 [2023-12-25 07:55:59,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 07:55:59,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 07:55:59,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 07:55:59,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 07:55:59,446 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 07:55:59,448 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 07:55:59,957 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 07:55:59,980 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 07:55:59,980 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 07:55:59,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:55:59 BoogieIcfgContainer [2023-12-25 07:55:59,981 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 07:55:59,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 07:55:59,982 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 07:55:59,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 07:55:59,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 07:55:58" (1/3) ... [2023-12-25 07:55:59,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ab15ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:55:59, skipping insertion in model container [2023-12-25 07:55:59,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:55:59" (2/3) ... [2023-12-25 07:55:59,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ab15ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:55:59, skipping insertion in model container [2023-12-25 07:55:59,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:55:59" (3/3) ... [2023-12-25 07:55:59,986 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c [2023-12-25 07:55:59,998 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 07:55:59,998 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 07:56:00,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 07:56:00,035 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;@499ae84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 07:56:00,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 07:56:00,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 126 states have (on average 1.8253968253968254) internal successors, (230), 127 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-25 07:56:00,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:00,045 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] [2023-12-25 07:56:00,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:00,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:00,049 INFO L85 PathProgramCache]: Analyzing trace with hash -19168985, now seen corresponding path program 1 times [2023-12-25 07:56:00,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:00,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950004138] [2023-12-25 07:56:00,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:00,059 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 [2023-12-25 07:56:00,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:00,067 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) [2023-12-25 07:56:00,103 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 [2023-12-25 07:56:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:00,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 07:56:00,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:00,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:00,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:00,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950004138] [2023-12-25 07:56:00,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950004138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:00,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:00,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 07:56:00,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570224080] [2023-12-25 07:56:00,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:00,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 07:56:00,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:00,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 07:56:00,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 07:56:00,268 INFO L87 Difference]: Start difference. First operand has 128 states, 126 states have (on average 1.8253968253968254) internal successors, (230), 127 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:00,295 INFO L93 Difference]: Finished difference Result 190 states and 333 transitions. [2023-12-25 07:56:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 07:56:00,297 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-25 07:56:00,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:00,303 INFO L225 Difference]: With dead ends: 190 [2023-12-25 07:56:00,303 INFO L226 Difference]: Without dead ends: 126 [2023-12-25 07:56:00,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 07:56:00,307 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:00,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:00,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-25 07:56:00,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-12-25 07:56:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.8) internal successors, (225), 125 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 225 transitions. [2023-12-25 07:56:00,335 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 225 transitions. Word has length 26 [2023-12-25 07:56:00,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:00,335 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 225 transitions. [2023-12-25 07:56:00,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 225 transitions. [2023-12-25 07:56:00,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-25 07:56:00,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:00,336 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] [2023-12-25 07:56:00,349 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 [2023-12-25 07:56:00,539 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 [2023-12-25 07:56:00,539 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:00,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:00,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1824607319, now seen corresponding path program 1 times [2023-12-25 07:56:00,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:00,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731969132] [2023-12-25 07:56:00,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:00,541 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 [2023-12-25 07:56:00,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:00,542 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) [2023-12-25 07:56:00,546 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 [2023-12-25 07:56:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:00,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:56:00,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:00,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:00,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:00,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731969132] [2023-12-25 07:56:00,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731969132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:00,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:00,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:56:00,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373272536] [2023-12-25 07:56:00,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:00,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:56:00,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:00,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:56:00,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:56:00,681 INFO L87 Difference]: Start difference. First operand 126 states and 225 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:00,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:00,781 INFO L93 Difference]: Finished difference Result 190 states and 327 transitions. [2023-12-25 07:56:00,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:56:00,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-25 07:56:00,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:00,783 INFO L225 Difference]: With dead ends: 190 [2023-12-25 07:56:00,783 INFO L226 Difference]: Without dead ends: 126 [2023-12-25 07:56:00,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:56:00,784 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 0 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:00,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 602 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:56:00,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-25 07:56:00,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-12-25 07:56:00,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.312) internal successors, (164), 125 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 164 transitions. [2023-12-25 07:56:00,791 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 164 transitions. Word has length 26 [2023-12-25 07:56:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:00,792 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 164 transitions. [2023-12-25 07:56:00,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:00,792 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 164 transitions. [2023-12-25 07:56:00,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-25 07:56:00,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:00,794 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] [2023-12-25 07:56:00,801 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 [2023-12-25 07:56:00,999 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 [2023-12-25 07:56:00,999 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:01,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:01,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2057891815, now seen corresponding path program 1 times [2023-12-25 07:56:01,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:01,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512800825] [2023-12-25 07:56:01,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:01,001 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 [2023-12-25 07:56:01,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:01,003 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) [2023-12-25 07:56:01,004 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 [2023-12-25 07:56:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:01,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:56:01,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:02,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:02,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512800825] [2023-12-25 07:56:02,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512800825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:02,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:02,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 07:56:02,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232349425] [2023-12-25 07:56:02,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:02,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 07:56:02,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:02,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 07:56:02,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-12-25 07:56:02,520 INFO L87 Difference]: Start difference. First operand 126 states and 164 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:02,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:02,840 INFO L93 Difference]: Finished difference Result 675 states and 1055 transitions. [2023-12-25 07:56:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 07:56:02,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-25 07:56:02,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:02,843 INFO L225 Difference]: With dead ends: 675 [2023-12-25 07:56:02,843 INFO L226 Difference]: Without dead ends: 614 [2023-12-25 07:56:02,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2023-12-25 07:56:02,845 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 755 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:02,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1686 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 07:56:02,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-12-25 07:56:02,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 244. [2023-12-25 07:56:02,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.4691358024691359) internal successors, (357), 243 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 357 transitions. [2023-12-25 07:56:02,858 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 357 transitions. Word has length 86 [2023-12-25 07:56:02,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:02,858 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 357 transitions. [2023-12-25 07:56:02,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 357 transitions. [2023-12-25 07:56:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-25 07:56:02,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:02,861 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] [2023-12-25 07:56:02,866 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 [2023-12-25 07:56:03,064 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 [2023-12-25 07:56:03,064 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:03,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:03,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1585272361, now seen corresponding path program 1 times [2023-12-25 07:56:03,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:03,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345558114] [2023-12-25 07:56:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:03,065 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 [2023-12-25 07:56:03,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:03,067 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) [2023-12-25 07:56:03,096 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 [2023-12-25 07:56:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:03,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:03,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:03,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:03,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:03,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:03,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345558114] [2023-12-25 07:56:03,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345558114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:03,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:03,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:03,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28769353] [2023-12-25 07:56:03,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:03,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:03,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:03,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:03,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:03,258 INFO L87 Difference]: Start difference. First operand 244 states and 357 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:03,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:03,281 INFO L93 Difference]: Finished difference Result 586 states and 913 transitions. [2023-12-25 07:56:03,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:03,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-25 07:56:03,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:03,284 INFO L225 Difference]: With dead ends: 586 [2023-12-25 07:56:03,284 INFO L226 Difference]: Without dead ends: 407 [2023-12-25 07:56:03,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:03,291 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 68 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:03,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 248 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-12-25 07:56:03,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 402. [2023-12-25 07:56:03,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.5187032418952617) internal successors, (609), 401 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 609 transitions. [2023-12-25 07:56:03,318 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 609 transitions. Word has length 88 [2023-12-25 07:56:03,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:03,319 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 609 transitions. [2023-12-25 07:56:03,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:03,319 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 609 transitions. [2023-12-25 07:56:03,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-25 07:56:03,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:03,321 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] [2023-12-25 07:56:03,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 07:56:03,521 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 [2023-12-25 07:56:03,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:03,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:03,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1951224140, now seen corresponding path program 1 times [2023-12-25 07:56:03,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:03,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927700143] [2023-12-25 07:56:03,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:03,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:56:03,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:03,542 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) [2023-12-25 07:56:03,571 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 [2023-12-25 07:56:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:03,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:56:03,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:03,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:03,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:03,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927700143] [2023-12-25 07:56:03,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927700143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:03,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:03,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:56:03,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269708213] [2023-12-25 07:56:03,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:03,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:56:03,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:03,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:56:03,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:56:03,681 INFO L87 Difference]: Start difference. First operand 402 states and 609 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:03,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:03,712 INFO L93 Difference]: Finished difference Result 416 states and 626 transitions. [2023-12-25 07:56:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:56:03,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-25 07:56:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:03,714 INFO L225 Difference]: With dead ends: 416 [2023-12-25 07:56:03,714 INFO L226 Difference]: Without dead ends: 414 [2023-12-25 07:56:03,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:56:03,715 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:03,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 472 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:03,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-12-25 07:56:03,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 410. [2023-12-25 07:56:03,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.5061124694376529) internal successors, (616), 409 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 616 transitions. [2023-12-25 07:56:03,723 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 616 transitions. Word has length 89 [2023-12-25 07:56:03,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:03,723 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 616 transitions. [2023-12-25 07:56:03,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 616 transitions. [2023-12-25 07:56:03,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 07:56:03,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:03,725 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] [2023-12-25 07:56:03,728 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 [2023-12-25 07:56:03,937 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 [2023-12-25 07:56:03,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:03,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:03,938 INFO L85 PathProgramCache]: Analyzing trace with hash -945069983, now seen corresponding path program 1 times [2023-12-25 07:56:03,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:03,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284489626] [2023-12-25 07:56:03,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:03,939 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 [2023-12-25 07:56:03,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:03,940 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) [2023-12-25 07:56:03,973 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 [2023-12-25 07:56:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:04,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:04,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:04,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:04,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:04,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284489626] [2023-12-25 07:56:04,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284489626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:04,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:04,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:04,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696588753] [2023-12-25 07:56:04,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:04,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:04,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:04,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:04,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:04,126 INFO L87 Difference]: Start difference. First operand 410 states and 616 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:04,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:04,143 INFO L93 Difference]: Finished difference Result 1076 states and 1676 transitions. [2023-12-25 07:56:04,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:04,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-25 07:56:04,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:04,147 INFO L225 Difference]: With dead ends: 1076 [2023-12-25 07:56:04,147 INFO L226 Difference]: Without dead ends: 731 [2023-12-25 07:56:04,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:04,149 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 87 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:04,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 339 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:04,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-25 07:56:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 729. [2023-12-25 07:56:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 1.5357142857142858) internal successors, (1118), 728 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:04,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1118 transitions. [2023-12-25 07:56:04,161 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1118 transitions. Word has length 90 [2023-12-25 07:56:04,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:04,161 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1118 transitions. [2023-12-25 07:56:04,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:04,161 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1118 transitions. [2023-12-25 07:56:04,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 07:56:04,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:04,162 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] [2023-12-25 07:56:04,175 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 [2023-12-25 07:56:04,365 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 [2023-12-25 07:56:04,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:04,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:04,366 INFO L85 PathProgramCache]: Analyzing trace with hash -189685919, now seen corresponding path program 1 times [2023-12-25 07:56:04,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:04,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570000025] [2023-12-25 07:56:04,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:04,366 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 [2023-12-25 07:56:04,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:04,367 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) [2023-12-25 07:56:04,403 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 [2023-12-25 07:56:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:04,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:04,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:04,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:04,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:04,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570000025] [2023-12-25 07:56:04,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570000025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:04,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:04,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:04,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695323260] [2023-12-25 07:56:04,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:04,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:04,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:04,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:04,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:04,525 INFO L87 Difference]: Start difference. First operand 729 states and 1118 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:04,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:04,547 INFO L93 Difference]: Finished difference Result 2009 states and 3140 transitions. [2023-12-25 07:56:04,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:04,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-25 07:56:04,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:04,551 INFO L225 Difference]: With dead ends: 2009 [2023-12-25 07:56:04,551 INFO L226 Difference]: Without dead ends: 1345 [2023-12-25 07:56:04,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:04,552 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 85 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:04,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 341 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2023-12-25 07:56:04,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1343. [2023-12-25 07:56:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1342 states have (on average 1.5454545454545454) internal successors, (2074), 1342 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:04,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 2074 transitions. [2023-12-25 07:56:04,573 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 2074 transitions. Word has length 90 [2023-12-25 07:56:04,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:04,573 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 2074 transitions. [2023-12-25 07:56:04,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:04,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 2074 transitions. [2023-12-25 07:56:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 07:56:04,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:04,574 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] [2023-12-25 07:56:04,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 07:56:04,779 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 [2023-12-25 07:56:04,780 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:04,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:04,781 INFO L85 PathProgramCache]: Analyzing trace with hash -600072607, now seen corresponding path program 1 times [2023-12-25 07:56:04,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:04,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628990227] [2023-12-25 07:56:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:04,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:56:04,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:04,782 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) [2023-12-25 07:56:04,804 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 [2023-12-25 07:56:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:04,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:04,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:04,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:04,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:04,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628990227] [2023-12-25 07:56:04,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628990227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:04,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:04,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:04,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087862581] [2023-12-25 07:56:04,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:04,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:04,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:04,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:04,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:04,945 INFO L87 Difference]: Start difference. First operand 1343 states and 2074 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:04,975 INFO L93 Difference]: Finished difference Result 3803 states and 5924 transitions. [2023-12-25 07:56:04,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:04,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-25 07:56:04,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:04,982 INFO L225 Difference]: With dead ends: 3803 [2023-12-25 07:56:04,982 INFO L226 Difference]: Without dead ends: 2525 [2023-12-25 07:56:04,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:04,985 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 83 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:04,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 343 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:04,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2023-12-25 07:56:05,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2523. [2023-12-25 07:56:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2522 states have (on average 1.542426645519429) internal successors, (3890), 2522 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:05,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 3890 transitions. [2023-12-25 07:56:05,038 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 3890 transitions. Word has length 90 [2023-12-25 07:56:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:05,038 INFO L495 AbstractCegarLoop]: Abstraction has 2523 states and 3890 transitions. [2023-12-25 07:56:05,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 3890 transitions. [2023-12-25 07:56:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 07:56:05,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:05,039 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] [2023-12-25 07:56:05,045 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 [2023-12-25 07:56:05,242 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 [2023-12-25 07:56:05,243 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:05,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:05,243 INFO L85 PathProgramCache]: Analyzing trace with hash -868655775, now seen corresponding path program 1 times [2023-12-25 07:56:05,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:05,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957276593] [2023-12-25 07:56:05,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:05,244 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 [2023-12-25 07:56:05,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:05,245 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) [2023-12-25 07:56:05,279 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 [2023-12-25 07:56:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:05,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:05,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:05,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:05,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:05,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:05,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957276593] [2023-12-25 07:56:05,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957276593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:05,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:05,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:05,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517481247] [2023-12-25 07:56:05,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:05,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:05,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:05,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:05,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:05,394 INFO L87 Difference]: Start difference. First operand 2523 states and 3890 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:05,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:05,455 INFO L93 Difference]: Finished difference Result 7247 states and 11204 transitions. [2023-12-25 07:56:05,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:05,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-25 07:56:05,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:05,469 INFO L225 Difference]: With dead ends: 7247 [2023-12-25 07:56:05,469 INFO L226 Difference]: Without dead ends: 4789 [2023-12-25 07:56:05,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:05,476 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 81 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:05,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 345 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:05,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4789 states. [2023-12-25 07:56:05,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4789 to 4787. [2023-12-25 07:56:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4787 states, 4786 states have (on average 1.5315503552026746) internal successors, (7330), 4786 states have internal predecessors, (7330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:05,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4787 states to 4787 states and 7330 transitions. [2023-12-25 07:56:05,570 INFO L78 Accepts]: Start accepts. Automaton has 4787 states and 7330 transitions. Word has length 90 [2023-12-25 07:56:05,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:05,570 INFO L495 AbstractCegarLoop]: Abstraction has 4787 states and 7330 transitions. [2023-12-25 07:56:05,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 4787 states and 7330 transitions. [2023-12-25 07:56:05,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 07:56:05,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:05,571 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] [2023-12-25 07:56:05,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-25 07:56:05,775 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 [2023-12-25 07:56:05,775 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:05,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:05,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1454367903, now seen corresponding path program 1 times [2023-12-25 07:56:05,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:05,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087706599] [2023-12-25 07:56:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:05,776 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 [2023-12-25 07:56:05,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:05,778 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) [2023-12-25 07:56:05,781 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 [2023-12-25 07:56:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:05,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:05,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:05,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:05,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:05,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087706599] [2023-12-25 07:56:05,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087706599] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:05,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:05,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:05,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752867437] [2023-12-25 07:56:05,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:05,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:05,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:05,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:05,938 INFO L87 Difference]: Start difference. First operand 4787 states and 7330 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:06,079 INFO L93 Difference]: Finished difference Result 13847 states and 21188 transitions. [2023-12-25 07:56:06,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:06,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-25 07:56:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:06,102 INFO L225 Difference]: With dead ends: 13847 [2023-12-25 07:56:06,103 INFO L226 Difference]: Without dead ends: 9125 [2023-12-25 07:56:06,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:06,110 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 77 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:06,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 341 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9125 states. [2023-12-25 07:56:06,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9125 to 9123. [2023-12-25 07:56:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9123 states, 9122 states have (on average 1.51567638675729) internal successors, (13826), 9122 states have internal predecessors, (13826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9123 states to 9123 states and 13826 transitions. [2023-12-25 07:56:06,277 INFO L78 Accepts]: Start accepts. Automaton has 9123 states and 13826 transitions. Word has length 90 [2023-12-25 07:56:06,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:06,277 INFO L495 AbstractCegarLoop]: Abstraction has 9123 states and 13826 transitions. [2023-12-25 07:56:06,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:06,277 INFO L276 IsEmpty]: Start isEmpty. Operand 9123 states and 13826 transitions. [2023-12-25 07:56:06,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 07:56:06,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:06,280 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] [2023-12-25 07:56:06,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-25 07:56:06,485 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 [2023-12-25 07:56:06,485 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:06,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:06,486 INFO L85 PathProgramCache]: Analyzing trace with hash -565634463, now seen corresponding path program 1 times [2023-12-25 07:56:06,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:06,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946130] [2023-12-25 07:56:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:06,486 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 [2023-12-25 07:56:06,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:06,487 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) [2023-12-25 07:56:06,518 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 [2023-12-25 07:56:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:06,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:06,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:06,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:06,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:06,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946130] [2023-12-25 07:56:06,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:06,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:06,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:06,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432126025] [2023-12-25 07:56:06,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:06,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:06,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:06,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:06,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:06,629 INFO L87 Difference]: Start difference. First operand 9123 states and 13826 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:06,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:06,799 INFO L93 Difference]: Finished difference Result 26471 states and 40004 transitions. [2023-12-25 07:56:06,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:06,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-25 07:56:06,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:06,845 INFO L225 Difference]: With dead ends: 26471 [2023-12-25 07:56:06,845 INFO L226 Difference]: Without dead ends: 17413 [2023-12-25 07:56:06,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:06,861 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 75 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:06,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 343 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:06,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17413 states. [2023-12-25 07:56:07,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17413 to 17411. [2023-12-25 07:56:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17411 states, 17410 states have (on average 1.4962665134979896) internal successors, (26050), 17410 states have internal predecessors, (26050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17411 states to 17411 states and 26050 transitions. [2023-12-25 07:56:07,220 INFO L78 Accepts]: Start accepts. Automaton has 17411 states and 26050 transitions. Word has length 90 [2023-12-25 07:56:07,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:07,220 INFO L495 AbstractCegarLoop]: Abstraction has 17411 states and 26050 transitions. [2023-12-25 07:56:07,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 17411 states and 26050 transitions. [2023-12-25 07:56:07,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-25 07:56:07,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:07,222 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] [2023-12-25 07:56:07,237 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 [2023-12-25 07:56:07,425 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 [2023-12-25 07:56:07,425 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:07,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:07,425 INFO L85 PathProgramCache]: Analyzing trace with hash -828711839, now seen corresponding path program 1 times [2023-12-25 07:56:07,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:07,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532975115] [2023-12-25 07:56:07,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:07,426 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 [2023-12-25 07:56:07,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:07,450 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) [2023-12-25 07:56:07,481 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 [2023-12-25 07:56:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:07,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:07,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:07,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:07,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:07,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532975115] [2023-12-25 07:56:07,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532975115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:07,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:07,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:07,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423538552] [2023-12-25 07:56:07,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:07,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:07,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:07,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:07,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:07,604 INFO L87 Difference]: Start difference. First operand 17411 states and 26050 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:07,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:07,950 INFO L93 Difference]: Finished difference Result 50567 states and 75332 transitions. [2023-12-25 07:56:07,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:07,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-25 07:56:07,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:08,010 INFO L225 Difference]: With dead ends: 50567 [2023-12-25 07:56:08,010 INFO L226 Difference]: Without dead ends: 33221 [2023-12-25 07:56:08,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:08,032 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 79 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:08,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 347 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:08,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33221 states. [2023-12-25 07:56:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33221 to 33219. [2023-12-25 07:56:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33219 states, 33218 states have (on average 1.473959901258354) internal successors, (48962), 33218 states have internal predecessors, (48962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33219 states to 33219 states and 48962 transitions. [2023-12-25 07:56:08,718 INFO L78 Accepts]: Start accepts. Automaton has 33219 states and 48962 transitions. Word has length 90 [2023-12-25 07:56:08,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:08,718 INFO L495 AbstractCegarLoop]: Abstraction has 33219 states and 48962 transitions. [2023-12-25 07:56:08,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:08,718 INFO L276 IsEmpty]: Start isEmpty. Operand 33219 states and 48962 transitions. [2023-12-25 07:56:08,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-25 07:56:08,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:08,719 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] [2023-12-25 07:56:08,738 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 (13)] Ended with exit code 0 [2023-12-25 07:56:08,922 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 [2023-12-25 07:56:08,922 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:08,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:08,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1361852954, now seen corresponding path program 1 times [2023-12-25 07:56:08,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:08,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192140207] [2023-12-25 07:56:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:08,923 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 [2023-12-25 07:56:08,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:08,924 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) [2023-12-25 07:56:08,925 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 [2023-12-25 07:56:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:09,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:09,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:09,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:09,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:09,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192140207] [2023-12-25 07:56:09,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192140207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:09,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:09,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:09,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822493299] [2023-12-25 07:56:09,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:09,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:09,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:09,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:09,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:09,083 INFO L87 Difference]: Start difference. First operand 33219 states and 48962 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:09,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:09,578 INFO L93 Difference]: Finished difference Result 67018 states and 99656 transitions. [2023-12-25 07:56:09,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:09,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-25 07:56:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:09,655 INFO L225 Difference]: With dead ends: 67018 [2023-12-25 07:56:09,656 INFO L226 Difference]: Without dead ends: 48967 [2023-12-25 07:56:09,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:09,676 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 86 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:09,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 340 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:09,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48967 states. [2023-12-25 07:56:10,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48967 to 48965. [2023-12-25 07:56:10,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48965 states, 48964 states have (on average 1.470549791683686) internal successors, (72004), 48964 states have internal predecessors, (72004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:10,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48965 states to 48965 states and 72004 transitions. [2023-12-25 07:56:10,653 INFO L78 Accepts]: Start accepts. Automaton has 48965 states and 72004 transitions. Word has length 92 [2023-12-25 07:56:10,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:10,653 INFO L495 AbstractCegarLoop]: Abstraction has 48965 states and 72004 transitions. [2023-12-25 07:56:10,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:10,653 INFO L276 IsEmpty]: Start isEmpty. Operand 48965 states and 72004 transitions. [2023-12-25 07:56:10,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-25 07:56:10,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:10,659 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:10,676 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 (14)] Ended with exit code 0 [2023-12-25 07:56:10,862 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 [2023-12-25 07:56:10,862 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:10,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:10,862 INFO L85 PathProgramCache]: Analyzing trace with hash -678588941, now seen corresponding path program 1 times [2023-12-25 07:56:10,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:10,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371229539] [2023-12-25 07:56:10,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:10,863 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 [2023-12-25 07:56:10,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:10,864 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) [2023-12-25 07:56:11,079 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 [2023-12-25 07:56:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:11,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:11,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:11,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:11,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:11,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371229539] [2023-12-25 07:56:11,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371229539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:11,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:11,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:11,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059855998] [2023-12-25 07:56:11,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:11,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:11,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:11,194 INFO L87 Difference]: Start difference. First operand 48965 states and 72004 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:11,627 INFO L93 Difference]: Finished difference Result 82786 states and 122336 transitions. [2023-12-25 07:56:11,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:11,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2023-12-25 07:56:11,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:11,778 INFO L225 Difference]: With dead ends: 82786 [2023-12-25 07:56:11,778 INFO L226 Difference]: Without dead ends: 33888 [2023-12-25 07:56:11,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:11,811 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 74 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:11,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 373 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:11,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33888 states. [2023-12-25 07:56:12,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33888 to 33886. [2023-12-25 07:56:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33886 states, 33885 states have (on average 1.4759628154050466) internal successors, (50013), 33885 states have internal predecessors, (50013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:12,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33886 states to 33886 states and 50013 transitions. [2023-12-25 07:56:12,448 INFO L78 Accepts]: Start accepts. Automaton has 33886 states and 50013 transitions. Word has length 114 [2023-12-25 07:56:12,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:12,448 INFO L495 AbstractCegarLoop]: Abstraction has 33886 states and 50013 transitions. [2023-12-25 07:56:12,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:12,448 INFO L276 IsEmpty]: Start isEmpty. Operand 33886 states and 50013 transitions. [2023-12-25 07:56:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-25 07:56:12,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:12,451 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:12,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-25 07:56:12,654 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 [2023-12-25 07:56:12,655 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:12,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:12,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1323357944, now seen corresponding path program 1 times [2023-12-25 07:56:12,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:12,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886556392] [2023-12-25 07:56:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:12,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:56:12,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:12,657 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) [2023-12-25 07:56:12,688 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 [2023-12-25 07:56:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:12,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:56:12,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:13,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:56:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:13,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:13,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886556392] [2023-12-25 07:56:13,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886556392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:56:13,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:56:13,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:56:13,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699419686] [2023-12-25 07:56:13,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:56:13,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:56:13,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:13,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:56:13,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:56:13,995 INFO L87 Difference]: Start difference. First operand 33886 states and 50013 transitions. Second operand has 16 states, 16 states have (on average 13.25) internal successors, (212), 16 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:16,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:16,372 INFO L93 Difference]: Finished difference Result 124712 states and 182690 transitions. [2023-12-25 07:56:16,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-25 07:56:16,373 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.25) internal successors, (212), 16 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2023-12-25 07:56:16,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:16,477 INFO L225 Difference]: With dead ends: 124712 [2023-12-25 07:56:16,477 INFO L226 Difference]: Without dead ends: 90918 [2023-12-25 07:56:16,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2023-12-25 07:56:16,498 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1187 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:16,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 1355 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 07:56:16,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90918 states. [2023-12-25 07:56:17,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90918 to 67678. [2023-12-25 07:56:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67678 states, 67677 states have (on average 1.4709428609424176) internal successors, (99549), 67677 states have internal predecessors, (99549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:18,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67678 states to 67678 states and 99549 transitions. [2023-12-25 07:56:18,043 INFO L78 Accepts]: Start accepts. Automaton has 67678 states and 99549 transitions. Word has length 116 [2023-12-25 07:56:18,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:18,044 INFO L495 AbstractCegarLoop]: Abstraction has 67678 states and 99549 transitions. [2023-12-25 07:56:18,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.25) internal successors, (212), 16 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:18,044 INFO L276 IsEmpty]: Start isEmpty. Operand 67678 states and 99549 transitions. [2023-12-25 07:56:18,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-12-25 07:56:18,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:18,048 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:18,052 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 (16)] Ended with exit code 0 [2023-12-25 07:56:18,251 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 [2023-12-25 07:56:18,252 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:18,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:18,252 INFO L85 PathProgramCache]: Analyzing trace with hash -904797412, now seen corresponding path program 1 times [2023-12-25 07:56:18,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:18,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285355644] [2023-12-25 07:56:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:18,253 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 [2023-12-25 07:56:18,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:18,254 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) [2023-12-25 07:56:18,260 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 [2023-12-25 07:56:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:18,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:18,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:18,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:18,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:18,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285355644] [2023-12-25 07:56:18,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285355644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:18,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934850285] [2023-12-25 07:56:18,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:18,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:18,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:18,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:18,416 INFO L87 Difference]: Start difference. First operand 67678 states and 99549 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:19,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:19,244 INFO L93 Difference]: Finished difference Result 101474 states and 149279 transitions. [2023-12-25 07:56:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:19,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2023-12-25 07:56:19,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:19,288 INFO L225 Difference]: With dead ends: 101474 [2023-12-25 07:56:19,288 INFO L226 Difference]: Without dead ends: 33888 [2023-12-25 07:56:19,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:19,325 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 68 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:19,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 358 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:19,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33888 states. [2023-12-25 07:56:19,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33888 to 33886. [2023-12-25 07:56:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33886 states, 33885 states have (on average 1.4589641434262948) internal successors, (49437), 33885 states have internal predecessors, (49437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33886 states to 33886 states and 49437 transitions. [2023-12-25 07:56:19,993 INFO L78 Accepts]: Start accepts. Automaton has 33886 states and 49437 transitions. Word has length 118 [2023-12-25 07:56:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:19,995 INFO L495 AbstractCegarLoop]: Abstraction has 33886 states and 49437 transitions. [2023-12-25 07:56:19,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 33886 states and 49437 transitions. [2023-12-25 07:56:20,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-25 07:56:20,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:20,025 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:20,030 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 (17)] Ended with exit code 0 [2023-12-25 07:56:20,228 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 [2023-12-25 07:56:20,228 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:20,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:20,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1985624366, now seen corresponding path program 1 times [2023-12-25 07:56:20,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:20,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093655425] [2023-12-25 07:56:20,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:20,229 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 [2023-12-25 07:56:20,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:20,231 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) [2023-12-25 07:56:20,232 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 [2023-12-25 07:56:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:20,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:56:20,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:21,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:56:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:21,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:21,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093655425] [2023-12-25 07:56:21,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093655425] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:56:21,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:56:21,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:56:21,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213636369] [2023-12-25 07:56:21,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:56:21,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:56:21,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:21,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:56:21,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:56:21,365 INFO L87 Difference]: Start difference. First operand 33886 states and 49437 transitions. Second operand has 16 states, 16 states have (on average 13.75) internal successors, (220), 16 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:22,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:22,625 INFO L93 Difference]: Finished difference Result 68460 states and 99566 transitions. [2023-12-25 07:56:22,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 07:56:22,626 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.75) internal successors, (220), 16 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-12-25 07:56:22,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:22,671 INFO L225 Difference]: With dead ends: 68460 [2023-12-25 07:56:22,671 INFO L226 Difference]: Without dead ends: 34666 [2023-12-25 07:56:22,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2023-12-25 07:56:22,696 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 412 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:22,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 975 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 07:56:22,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34666 states. [2023-12-25 07:56:23,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34666 to 33896. [2023-12-25 07:56:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33896 states, 33895 states have (on average 1.4588877415548016) internal successors, (49449), 33895 states have internal predecessors, (49449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:23,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33896 states to 33896 states and 49449 transitions. [2023-12-25 07:56:23,457 INFO L78 Accepts]: Start accepts. Automaton has 33896 states and 49449 transitions. Word has length 119 [2023-12-25 07:56:23,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:23,458 INFO L495 AbstractCegarLoop]: Abstraction has 33896 states and 49449 transitions. [2023-12-25 07:56:23,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.75) internal successors, (220), 16 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 33896 states and 49449 transitions. [2023-12-25 07:56:23,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-25 07:56:23,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:23,461 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:23,465 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 [2023-12-25 07:56:23,663 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 [2023-12-25 07:56:23,664 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:23,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:23,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1341232190, now seen corresponding path program 1 times [2023-12-25 07:56:23,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:23,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992138400] [2023-12-25 07:56:23,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:23,665 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 [2023-12-25 07:56:23,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:23,666 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) [2023-12-25 07:56:23,670 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 [2023-12-25 07:56:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:23,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:23,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:23,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:23,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:23,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992138400] [2023-12-25 07:56:23,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992138400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:23,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:23,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:23,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279726564] [2023-12-25 07:56:23,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:23,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:23,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:23,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:23,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:23,833 INFO L87 Difference]: Start difference. First operand 33896 states and 49449 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:24,077 INFO L93 Difference]: Finished difference Result 50796 states and 74123 transitions. [2023-12-25 07:56:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:24,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2023-12-25 07:56:24,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:24,100 INFO L225 Difference]: With dead ends: 50796 [2023-12-25 07:56:24,100 INFO L226 Difference]: Without dead ends: 17002 [2023-12-25 07:56:24,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:24,122 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 64 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:24,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 343 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:24,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17002 states. [2023-12-25 07:56:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17002 to 17000. [2023-12-25 07:56:24,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17000 states, 16999 states have (on average 1.4462615447967528) internal successors, (24585), 16999 states have internal predecessors, (24585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17000 states to 17000 states and 24585 transitions. [2023-12-25 07:56:24,521 INFO L78 Accepts]: Start accepts. Automaton has 17000 states and 24585 transitions. Word has length 121 [2023-12-25 07:56:24,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:24,521 INFO L495 AbstractCegarLoop]: Abstraction has 17000 states and 24585 transitions. [2023-12-25 07:56:24,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand 17000 states and 24585 transitions. [2023-12-25 07:56:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-25 07:56:24,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:24,522 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:24,530 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 [2023-12-25 07:56:24,725 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 [2023-12-25 07:56:24,726 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:24,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:24,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1874816532, now seen corresponding path program 1 times [2023-12-25 07:56:24,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:24,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505260505] [2023-12-25 07:56:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:24,727 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 [2023-12-25 07:56:24,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:24,728 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) [2023-12-25 07:56:24,732 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 [2023-12-25 07:56:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:24,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:56:24,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:25,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:56:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:25,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:25,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505260505] [2023-12-25 07:56:25,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505260505] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:56:25,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:56:25,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:56:25,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026358010] [2023-12-25 07:56:25,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:56:25,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:56:25,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:25,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:56:25,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:56:25,942 INFO L87 Difference]: Start difference. First operand 17000 states and 24585 transitions. Second operand has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:27,660 INFO L93 Difference]: Finished difference Result 64048 states and 92173 transitions. [2023-12-25 07:56:27,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 07:56:27,661 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-12-25 07:56:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:27,716 INFO L225 Difference]: With dead ends: 64048 [2023-12-25 07:56:27,716 INFO L226 Difference]: Without dead ends: 47150 [2023-12-25 07:56:27,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-25 07:56:27,727 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 1056 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:27,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 1439 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 07:56:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47150 states. [2023-12-25 07:56:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47150 to 35048. [2023-12-25 07:56:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35048 states, 35047 states have (on average 1.4273689616800296) internal successors, (50025), 35047 states have internal predecessors, (50025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35048 states to 35048 states and 50025 transitions. [2023-12-25 07:56:28,473 INFO L78 Accepts]: Start accepts. Automaton has 35048 states and 50025 transitions. Word has length 122 [2023-12-25 07:56:28,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:28,473 INFO L495 AbstractCegarLoop]: Abstraction has 35048 states and 50025 transitions. [2023-12-25 07:56:28,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand 35048 states and 50025 transitions. [2023-12-25 07:56:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-25 07:56:28,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:28,476 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:28,485 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 (20)] Ended with exit code 0 [2023-12-25 07:56:28,678 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 [2023-12-25 07:56:28,678 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:28,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:28,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1995414872, now seen corresponding path program 1 times [2023-12-25 07:56:28,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:28,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792907471] [2023-12-25 07:56:28,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:28,679 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 [2023-12-25 07:56:28,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:28,680 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) [2023-12-25 07:56:28,683 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 [2023-12-25 07:56:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:28,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:28,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:28,826 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:28,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:28,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:28,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792907471] [2023-12-25 07:56:28,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792907471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:28,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:28,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:28,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916701169] [2023-12-25 07:56:28,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:28,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:28,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:28,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:28,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:28,827 INFO L87 Difference]: Start difference. First operand 35048 states and 50025 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:29,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:29,203 INFO L93 Difference]: Finished difference Result 52524 states and 74987 transitions. [2023-12-25 07:56:29,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:29,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2023-12-25 07:56:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:29,222 INFO L225 Difference]: With dead ends: 52524 [2023-12-25 07:56:29,222 INFO L226 Difference]: Without dead ends: 17578 [2023-12-25 07:56:29,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:29,242 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 60 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:29,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 328 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:29,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17578 states. [2023-12-25 07:56:29,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17578 to 17576. [2023-12-25 07:56:29,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17576 states, 17575 states have (on average 1.41524893314367) internal successors, (24873), 17575 states have internal predecessors, (24873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17576 states to 17576 states and 24873 transitions. [2023-12-25 07:56:29,549 INFO L78 Accepts]: Start accepts. Automaton has 17576 states and 24873 transitions. Word has length 124 [2023-12-25 07:56:29,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:29,550 INFO L495 AbstractCegarLoop]: Abstraction has 17576 states and 24873 transitions. [2023-12-25 07:56:29,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:29,550 INFO L276 IsEmpty]: Start isEmpty. Operand 17576 states and 24873 transitions. [2023-12-25 07:56:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-25 07:56:29,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:29,551 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:29,554 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 (21)] Ended with exit code 0 [2023-12-25 07:56:29,754 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 [2023-12-25 07:56:29,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:29,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:29,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1090029882, now seen corresponding path program 1 times [2023-12-25 07:56:29,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:29,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063418037] [2023-12-25 07:56:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:29,755 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 [2023-12-25 07:56:29,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:29,756 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) [2023-12-25 07:56:29,771 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 [2023-12-25 07:56:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:29,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:56:29,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:30,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:56:31,026 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:31,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:31,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063418037] [2023-12-25 07:56:31,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063418037] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:56:31,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:56:31,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:56:31,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456525469] [2023-12-25 07:56:31,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:56:31,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:56:31,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:31,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:56:31,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:56:31,027 INFO L87 Difference]: Start difference. First operand 17576 states and 24873 transitions. Second operand has 16 states, 16 states have (on average 14.75) internal successors, (236), 16 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:32,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:32,955 INFO L93 Difference]: Finished difference Result 64624 states and 91117 transitions. [2023-12-25 07:56:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 07:56:32,955 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.75) internal successors, (236), 16 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2023-12-25 07:56:32,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:33,011 INFO L225 Difference]: With dead ends: 64624 [2023-12-25 07:56:33,011 INFO L226 Difference]: Without dead ends: 47150 [2023-12-25 07:56:33,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-25 07:56:33,027 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1039 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:33,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1525 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 07:56:33,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47150 states. [2023-12-25 07:56:33,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47150 to 36200. [2023-12-25 07:56:33,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36200 states, 36199 states have (on average 1.3978562943727728) internal successors, (50601), 36199 states have internal predecessors, (50601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36200 states to 36200 states and 50601 transitions. [2023-12-25 07:56:33,924 INFO L78 Accepts]: Start accepts. Automaton has 36200 states and 50601 transitions. Word has length 125 [2023-12-25 07:56:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:33,925 INFO L495 AbstractCegarLoop]: Abstraction has 36200 states and 50601 transitions. [2023-12-25 07:56:33,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.75) internal successors, (236), 16 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 36200 states and 50601 transitions. [2023-12-25 07:56:33,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-25 07:56:33,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:33,927 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:33,929 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 [2023-12-25 07:56:34,128 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 [2023-12-25 07:56:34,128 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:34,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:34,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1445648818, now seen corresponding path program 1 times [2023-12-25 07:56:34,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:34,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620001206] [2023-12-25 07:56:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:34,129 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 [2023-12-25 07:56:34,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:34,130 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) [2023-12-25 07:56:34,144 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 [2023-12-25 07:56:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:34,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:34,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:34,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:34,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:34,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620001206] [2023-12-25 07:56:34,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620001206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:34,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:34,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:34,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042078791] [2023-12-25 07:56:34,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:34,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:34,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:34,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:34,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:34,335 INFO L87 Difference]: Start difference. First operand 36200 states and 50601 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:34,633 INFO L93 Difference]: Finished difference Result 54252 states and 75851 transitions. [2023-12-25 07:56:34,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:34,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2023-12-25 07:56:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:34,656 INFO L225 Difference]: With dead ends: 54252 [2023-12-25 07:56:34,657 INFO L226 Difference]: Without dead ends: 18154 [2023-12-25 07:56:34,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:34,678 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 56 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:34,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 313 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:34,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18154 states. [2023-12-25 07:56:35,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18154 to 18152. [2023-12-25 07:56:35,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18152 states, 18151 states have (on average 1.3862046168255193) internal successors, (25161), 18151 states have internal predecessors, (25161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18152 states to 18152 states and 25161 transitions. [2023-12-25 07:56:35,169 INFO L78 Accepts]: Start accepts. Automaton has 18152 states and 25161 transitions. Word has length 127 [2023-12-25 07:56:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:35,170 INFO L495 AbstractCegarLoop]: Abstraction has 18152 states and 25161 transitions. [2023-12-25 07:56:35,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:35,170 INFO L276 IsEmpty]: Start isEmpty. Operand 18152 states and 25161 transitions. [2023-12-25 07:56:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-25 07:56:35,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:35,171 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:35,176 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 [2023-12-25 07:56:35,374 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 [2023-12-25 07:56:35,374 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:35,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:35,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1495734560, now seen corresponding path program 1 times [2023-12-25 07:56:35,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:35,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011896471] [2023-12-25 07:56:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:35,375 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 [2023-12-25 07:56:35,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:35,376 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) [2023-12-25 07:56:35,379 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 [2023-12-25 07:56:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:35,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:56:35,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:36,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:56:36,533 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:36,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:36,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011896471] [2023-12-25 07:56:36,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011896471] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:56:36,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:56:36,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:56:36,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722123066] [2023-12-25 07:56:36,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:56:36,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:56:36,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:36,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:56:36,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:56:36,535 INFO L87 Difference]: Start difference. First operand 18152 states and 25161 transitions. Second operand has 16 states, 16 states have (on average 15.25) internal successors, (244), 16 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:38,557 INFO L93 Difference]: Finished difference Result 65200 states and 90061 transitions. [2023-12-25 07:56:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 07:56:38,558 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.25) internal successors, (244), 16 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2023-12-25 07:56:38,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:38,617 INFO L225 Difference]: With dead ends: 65200 [2023-12-25 07:56:38,618 INFO L226 Difference]: Without dead ends: 47150 [2023-12-25 07:56:38,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-25 07:56:38,641 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 819 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:38,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1456 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 07:56:38,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47150 states. [2023-12-25 07:56:39,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47150 to 37352. [2023-12-25 07:56:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37352 states, 37351 states have (on average 1.3701641187652271) internal successors, (51177), 37351 states have internal predecessors, (51177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:39,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37352 states to 37352 states and 51177 transitions. [2023-12-25 07:56:39,747 INFO L78 Accepts]: Start accepts. Automaton has 37352 states and 51177 transitions. Word has length 128 [2023-12-25 07:56:39,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:39,747 INFO L495 AbstractCegarLoop]: Abstraction has 37352 states and 51177 transitions. [2023-12-25 07:56:39,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.25) internal successors, (244), 16 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:39,747 INFO L276 IsEmpty]: Start isEmpty. Operand 37352 states and 51177 transitions. [2023-12-25 07:56:39,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-25 07:56:39,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:39,749 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:39,752 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 (24)] Ended with exit code 0 [2023-12-25 07:56:39,952 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 [2023-12-25 07:56:39,953 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:39,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:39,953 INFO L85 PathProgramCache]: Analyzing trace with hash 848398388, now seen corresponding path program 1 times [2023-12-25 07:56:39,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:39,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83717110] [2023-12-25 07:56:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:39,954 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 [2023-12-25 07:56:39,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:39,955 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) [2023-12-25 07:56:39,988 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 [2023-12-25 07:56:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:40,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:40,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:40,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:40,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:40,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83717110] [2023-12-25 07:56:40,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83717110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:40,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:40,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:40,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112607557] [2023-12-25 07:56:40,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:40,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:40,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:40,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:40,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:40,132 INFO L87 Difference]: Start difference. First operand 37352 states and 51177 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:40,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:40,495 INFO L93 Difference]: Finished difference Result 55980 states and 76715 transitions. [2023-12-25 07:56:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:40,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2023-12-25 07:56:40,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:40,519 INFO L225 Difference]: With dead ends: 55980 [2023-12-25 07:56:40,519 INFO L226 Difference]: Without dead ends: 18730 [2023-12-25 07:56:40,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:40,543 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 52 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:40,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 298 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18730 states. [2023-12-25 07:56:41,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18730 to 18728. [2023-12-25 07:56:41,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18728 states, 18727 states have (on average 1.358946974955946) internal successors, (25449), 18727 states have internal predecessors, (25449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:41,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18728 states to 18728 states and 25449 transitions. [2023-12-25 07:56:41,113 INFO L78 Accepts]: Start accepts. Automaton has 18728 states and 25449 transitions. Word has length 130 [2023-12-25 07:56:41,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:41,113 INFO L495 AbstractCegarLoop]: Abstraction has 18728 states and 25449 transitions. [2023-12-25 07:56:41,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:41,113 INFO L276 IsEmpty]: Start isEmpty. Operand 18728 states and 25449 transitions. [2023-12-25 07:56:41,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-25 07:56:41,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:41,115 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:41,120 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 (25)] Forceful destruction successful, exit code 0 [2023-12-25 07:56:41,318 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 [2023-12-25 07:56:41,318 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:41,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:41,319 INFO L85 PathProgramCache]: Analyzing trace with hash 940196026, now seen corresponding path program 1 times [2023-12-25 07:56:41,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:41,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680978903] [2023-12-25 07:56:41,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:41,319 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 [2023-12-25 07:56:41,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:41,321 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) [2023-12-25 07:56:41,322 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 [2023-12-25 07:56:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:41,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:56:41,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:42,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:56:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:42,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:42,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680978903] [2023-12-25 07:56:42,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680978903] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:56:42,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:56:42,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:56:42,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400764549] [2023-12-25 07:56:42,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:56:42,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:56:42,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:42,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:56:42,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:56:42,501 INFO L87 Difference]: Start difference. First operand 18728 states and 25449 transitions. Second operand has 16 states, 16 states have (on average 15.75) internal successors, (252), 16 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:44,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:44,430 INFO L93 Difference]: Finished difference Result 65776 states and 89005 transitions. [2023-12-25 07:56:44,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 07:56:44,430 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.75) internal successors, (252), 16 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2023-12-25 07:56:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:44,485 INFO L225 Difference]: With dead ends: 65776 [2023-12-25 07:56:44,485 INFO L226 Difference]: Without dead ends: 47150 [2023-12-25 07:56:44,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-25 07:56:44,508 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 872 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:44,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1186 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 07:56:44,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47150 states. [2023-12-25 07:56:45,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47150 to 38504. [2023-12-25 07:56:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38504 states, 38503 states have (on average 1.3441290289068384) internal successors, (51753), 38503 states have internal predecessors, (51753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38504 states to 38504 states and 51753 transitions. [2023-12-25 07:56:45,662 INFO L78 Accepts]: Start accepts. Automaton has 38504 states and 51753 transitions. Word has length 131 [2023-12-25 07:56:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:45,663 INFO L495 AbstractCegarLoop]: Abstraction has 38504 states and 51753 transitions. [2023-12-25 07:56:45,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.75) internal successors, (252), 16 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 38504 states and 51753 transitions. [2023-12-25 07:56:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-25 07:56:45,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:45,665 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:45,670 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 (26)] Forceful destruction successful, exit code 0 [2023-12-25 07:56:45,868 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 [2023-12-25 07:56:45,868 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:45,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:45,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2061891878, now seen corresponding path program 1 times [2023-12-25 07:56:45,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:45,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836516394] [2023-12-25 07:56:45,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:45,869 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 [2023-12-25 07:56:45,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:45,871 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) [2023-12-25 07:56:45,871 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 [2023-12-25 07:56:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:46,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:46,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:46,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:46,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:46,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836516394] [2023-12-25 07:56:46,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836516394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:46,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:46,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:46,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268912933] [2023-12-25 07:56:46,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:46,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:46,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:46,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:46,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:46,047 INFO L87 Difference]: Start difference. First operand 38504 states and 51753 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:46,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:46,436 INFO L93 Difference]: Finished difference Result 57708 states and 77579 transitions. [2023-12-25 07:56:46,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:46,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-25 07:56:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:46,461 INFO L225 Difference]: With dead ends: 57708 [2023-12-25 07:56:46,461 INFO L226 Difference]: Without dead ends: 19306 [2023-12-25 07:56:46,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:46,485 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 48 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:46,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 283 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:46,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19306 states. [2023-12-25 07:56:47,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19306 to 19304. [2023-12-25 07:56:47,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19304 states, 19303 states have (on average 1.3333160648603843) internal successors, (25737), 19303 states have internal predecessors, (25737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19304 states to 19304 states and 25737 transitions. [2023-12-25 07:56:47,082 INFO L78 Accepts]: Start accepts. Automaton has 19304 states and 25737 transitions. Word has length 133 [2023-12-25 07:56:47,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:47,082 INFO L495 AbstractCegarLoop]: Abstraction has 19304 states and 25737 transitions. [2023-12-25 07:56:47,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 19304 states and 25737 transitions. [2023-12-25 07:56:47,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-25 07:56:47,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:47,084 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:47,087 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 (27)] Forceful destruction successful, exit code 0 [2023-12-25 07:56:47,287 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 [2023-12-25 07:56:47,287 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:47,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:47,288 INFO L85 PathProgramCache]: Analyzing trace with hash 289854932, now seen corresponding path program 1 times [2023-12-25 07:56:47,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:47,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109056472] [2023-12-25 07:56:47,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:47,288 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 [2023-12-25 07:56:47,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:47,289 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) [2023-12-25 07:56:47,291 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 [2023-12-25 07:56:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:47,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:56:47,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:48,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:56:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:48,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:48,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109056472] [2023-12-25 07:56:48,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109056472] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:56:48,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:56:48,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:56:48,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691903668] [2023-12-25 07:56:48,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:56:48,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:56:48,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:48,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:56:48,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:56:48,434 INFO L87 Difference]: Start difference. First operand 19304 states and 25737 transitions. Second operand has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:50,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:50,318 INFO L93 Difference]: Finished difference Result 66352 states and 87949 transitions. [2023-12-25 07:56:50,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 07:56:50,318 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-12-25 07:56:50,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:50,374 INFO L225 Difference]: With dead ends: 66352 [2023-12-25 07:56:50,375 INFO L226 Difference]: Without dead ends: 47150 [2023-12-25 07:56:50,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2023-12-25 07:56:50,385 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 681 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:50,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1093 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:56:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47150 states. [2023-12-25 07:56:51,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47150 to 39656. [2023-12-25 07:56:51,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39656 states, 39655 states have (on average 1.3196066069852477) internal successors, (52329), 39655 states have internal predecessors, (52329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:51,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39656 states to 39656 states and 52329 transitions. [2023-12-25 07:56:51,494 INFO L78 Accepts]: Start accepts. Automaton has 39656 states and 52329 transitions. Word has length 134 [2023-12-25 07:56:51,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:51,495 INFO L495 AbstractCegarLoop]: Abstraction has 39656 states and 52329 transitions. [2023-12-25 07:56:51,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.25) internal successors, (260), 16 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand 39656 states and 52329 transitions. [2023-12-25 07:56:51,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-25 07:56:51,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:51,497 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:51,502 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 (28)] Ended with exit code 0 [2023-12-25 07:56:51,700 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 [2023-12-25 07:56:51,700 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:51,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:51,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1541909568, now seen corresponding path program 1 times [2023-12-25 07:56:51,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:51,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564345040] [2023-12-25 07:56:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:51,701 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 [2023-12-25 07:56:51,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:51,702 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) [2023-12-25 07:56:51,704 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 (29)] Waiting until timeout for monitored process [2023-12-25 07:56:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:51,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:56:51,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:51,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:56:51,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:51,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564345040] [2023-12-25 07:56:51,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564345040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:56:51,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:56:51,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 07:56:51,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237504507] [2023-12-25 07:56:51,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:56:51,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:56:51,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:51,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:56:51,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:51,914 INFO L87 Difference]: Start difference. First operand 39656 states and 52329 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:52,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:52,369 INFO L93 Difference]: Finished difference Result 59436 states and 78347 transitions. [2023-12-25 07:56:52,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:56:52,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-25 07:56:52,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:52,398 INFO L225 Difference]: With dead ends: 59436 [2023-12-25 07:56:52,398 INFO L226 Difference]: Without dead ends: 19882 [2023-12-25 07:56:52,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:56:52,423 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 44 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:52,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 268 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:56:52,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19882 states. [2023-12-25 07:56:53,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19882 to 19880. [2023-12-25 07:56:53,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19880 states, 19879 states have (on average 1.3043412646511394) internal successors, (25929), 19879 states have internal predecessors, (25929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19880 states to 19880 states and 25929 transitions. [2023-12-25 07:56:53,076 INFO L78 Accepts]: Start accepts. Automaton has 19880 states and 25929 transitions. Word has length 136 [2023-12-25 07:56:53,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:53,077 INFO L495 AbstractCegarLoop]: Abstraction has 19880 states and 25929 transitions. [2023-12-25 07:56:53,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 19880 states and 25929 transitions. [2023-12-25 07:56:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-25 07:56:53,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:53,086 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:53,089 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 (29)] Ended with exit code 0 [2023-12-25 07:56:53,289 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 [2023-12-25 07:56:53,290 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:53,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:53,290 INFO L85 PathProgramCache]: Analyzing trace with hash 118170798, now seen corresponding path program 1 times [2023-12-25 07:56:53,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:53,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046944073] [2023-12-25 07:56:53,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:53,291 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 [2023-12-25 07:56:53,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:53,292 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) [2023-12-25 07:56:53,294 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 [2023-12-25 07:56:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:53,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 07:56:53,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:54,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:56:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:56:54,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:54,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046944073] [2023-12-25 07:56:54,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046944073] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:56:54,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:56:54,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2023-12-25 07:56:54,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937950419] [2023-12-25 07:56:54,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:56:54,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 07:56:54,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:54,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 07:56:54,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-25 07:56:54,485 INFO L87 Difference]: Start difference. First operand 19880 states and 25929 transitions. Second operand has 16 states, 16 states have (on average 16.75) internal successors, (268), 16 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:56,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:56:56,329 INFO L93 Difference]: Finished difference Result 56112 states and 72781 transitions. [2023-12-25 07:56:56,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 07:56:56,330 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.75) internal successors, (268), 16 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2023-12-25 07:56:56,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:56:56,376 INFO L225 Difference]: With dead ends: 56112 [2023-12-25 07:56:56,377 INFO L226 Difference]: Without dead ends: 36334 [2023-12-25 07:56:56,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-25 07:56:56,400 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 512 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:56:56,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1230 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 07:56:56,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36334 states. [2023-12-25 07:56:57,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36334 to 33832. [2023-12-25 07:56:57,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33832 states, 33831 states have (on average 1.2904436759185363) internal successors, (43657), 33831 states have internal predecessors, (43657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:57,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33832 states to 33832 states and 43657 transitions. [2023-12-25 07:56:57,369 INFO L78 Accepts]: Start accepts. Automaton has 33832 states and 43657 transitions. Word has length 137 [2023-12-25 07:56:57,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:56:57,370 INFO L495 AbstractCegarLoop]: Abstraction has 33832 states and 43657 transitions. [2023-12-25 07:56:57,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.75) internal successors, (268), 16 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:56:57,370 INFO L276 IsEmpty]: Start isEmpty. Operand 33832 states and 43657 transitions. [2023-12-25 07:56:57,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-25 07:56:57,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:56:57,372 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 07:56:57,377 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 [2023-12-25 07:56:57,575 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 [2023-12-25 07:56:57,575 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:56:57,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:56:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash 346033510, now seen corresponding path program 1 times [2023-12-25 07:56:57,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:56:57,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881199530] [2023-12-25 07:56:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:56:57,576 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 [2023-12-25 07:56:57,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:56:57,577 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) [2023-12-25 07:56:57,600 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 [2023-12-25 07:56:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:56:57,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 07:56:57,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:56:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 07:56:57,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:56:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-25 07:56:57,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:56:57,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881199530] [2023-12-25 07:56:57,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881199530] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:56:57,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:56:57,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-25 07:56:57,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164544764] [2023-12-25 07:56:57,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:56:57,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 07:56:57,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:56:57,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 07:56:57,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:56:57,976 INFO L87 Difference]: Start difference. First operand 33832 states and 43657 transitions. Second operand has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:57:00,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:57:00,336 INFO L93 Difference]: Finished difference Result 131746 states and 168094 transitions. [2023-12-25 07:57:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 07:57:00,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-12-25 07:57:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:57:00,455 INFO L225 Difference]: With dead ends: 131746 [2023-12-25 07:57:00,455 INFO L226 Difference]: Without dead ends: 98016 [2023-12-25 07:57:00,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-25 07:57:00,499 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 206 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:57:00,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 601 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:57:00,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98016 states. [2023-12-25 07:57:03,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98016 to 97692. [2023-12-25 07:57:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97692 states, 97691 states have (on average 1.2348629863549354) internal successors, (120635), 97691 states have internal predecessors, (120635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:57:03,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97692 states to 97692 states and 120635 transitions. [2023-12-25 07:57:04,000 INFO L78 Accepts]: Start accepts. Automaton has 97692 states and 120635 transitions. Word has length 139 [2023-12-25 07:57:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:57:04,000 INFO L495 AbstractCegarLoop]: Abstraction has 97692 states and 120635 transitions. [2023-12-25 07:57:04,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:57:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand 97692 states and 120635 transitions. [2023-12-25 07:57:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-25 07:57:04,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:57:04,025 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2023-12-25 07:57:04,032 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 [2023-12-25 07:57:04,227 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 [2023-12-25 07:57:04,228 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:57:04,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:57:04,228 INFO L85 PathProgramCache]: Analyzing trace with hash -802514673, now seen corresponding path program 1 times [2023-12-25 07:57:04,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:57:04,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300167242] [2023-12-25 07:57:04,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:57:04,229 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 [2023-12-25 07:57:04,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:57:04,230 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) [2023-12-25 07:57:04,233 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 [2023-12-25 07:57:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:57:04,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 07:57:04,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:57:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 69 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:57:05,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:57:06,581 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 69 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:57:06,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:57:06,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300167242] [2023-12-25 07:57:06,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300167242] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:57:06,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:57:06,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-25 07:57:06,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838289441] [2023-12-25 07:57:06,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:57:06,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:57:06,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:57:06,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:57:06,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:57:06,583 INFO L87 Difference]: Start difference. First operand 97692 states and 120635 transitions. Second operand has 26 states, 26 states have (on average 14.384615384615385) internal successors, (374), 26 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:57:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:57:15,833 INFO L93 Difference]: Finished difference Result 216370 states and 266006 transitions. [2023-12-25 07:57:15,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-25 07:57:15,834 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.384615384615385) internal successors, (374), 26 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-12-25 07:57:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:57:16,123 INFO L225 Difference]: With dead ends: 216370 [2023-12-25 07:57:16,124 INFO L226 Difference]: Without dead ends: 170224 [2023-12-25 07:57:16,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1033, Invalid=5129, Unknown=0, NotChecked=0, Total=6162 [2023-12-25 07:57:16,192 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 1685 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 3136 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 3162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-25 07:57:16,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1685 Valid, 3226 Invalid, 3162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3136 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-25 07:57:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170224 states. [2023-12-25 07:57:19,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170224 to 68540. [2023-12-25 07:57:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68540 states, 68539 states have (on average 1.2332102890325216) internal successors, (84523), 68539 states have internal predecessors, (84523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:57:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68540 states to 68540 states and 84523 transitions. [2023-12-25 07:57:19,419 INFO L78 Accepts]: Start accepts. Automaton has 68540 states and 84523 transitions. Word has length 204 [2023-12-25 07:57:19,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:57:19,419 INFO L495 AbstractCegarLoop]: Abstraction has 68540 states and 84523 transitions. [2023-12-25 07:57:19,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.384615384615385) internal successors, (374), 26 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:57:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand 68540 states and 84523 transitions. [2023-12-25 07:57:19,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-25 07:57:19,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:57:19,432 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2023-12-25 07:57:19,438 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 [2023-12-25 07:57:19,636 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 [2023-12-25 07:57:19,636 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:57:19,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:57:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash 926867237, now seen corresponding path program 1 times [2023-12-25 07:57:19,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:57:19,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171725615] [2023-12-25 07:57:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:57:19,637 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 [2023-12-25 07:57:19,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:57:19,638 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) [2023-12-25 07:57:19,649 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 [2023-12-25 07:57:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:57:19,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 07:57:19,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:57:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 62 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:57:20,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:57:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 62 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:57:21,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:57:21,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171725615] [2023-12-25 07:57:21,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171725615] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:57:21,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:57:21,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-25 07:57:21,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828633183] [2023-12-25 07:57:21,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:57:21,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:57:21,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:57:21,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:57:21,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:57:21,594 INFO L87 Difference]: Start difference. First operand 68540 states and 84523 transitions. Second operand has 26 states, 26 states have (on average 14.538461538461538) internal successors, (378), 25 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:57:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:57:25,376 INFO L93 Difference]: Finished difference Result 131804 states and 163008 transitions. [2023-12-25 07:57:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 07:57:25,377 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.538461538461538) internal successors, (378), 25 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2023-12-25 07:57:25,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:57:25,466 INFO L225 Difference]: With dead ends: 131804 [2023-12-25 07:57:25,467 INFO L226 Difference]: Without dead ends: 68542 [2023-12-25 07:57:25,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=378, Invalid=1428, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 07:57:25,497 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 990 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 07:57:25,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 1213 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 07:57:25,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68542 states. [2023-12-25 07:57:28,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68542 to 68540. [2023-12-25 07:57:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68540 states, 68539 states have (on average 1.222938764790849) internal successors, (83819), 68539 states have internal predecessors, (83819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:57:28,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68540 states to 68540 states and 83819 transitions. [2023-12-25 07:57:28,345 INFO L78 Accepts]: Start accepts. Automaton has 68540 states and 83819 transitions. Word has length 205 [2023-12-25 07:57:28,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:57:28,345 INFO L495 AbstractCegarLoop]: Abstraction has 68540 states and 83819 transitions. [2023-12-25 07:57:28,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.538461538461538) internal successors, (378), 25 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:57:28,345 INFO L276 IsEmpty]: Start isEmpty. Operand 68540 states and 83819 transitions. [2023-12-25 07:57:28,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-25 07:57:28,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:57:28,358 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2023-12-25 07:57:28,365 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 [2023-12-25 07:57:28,562 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 [2023-12-25 07:57:28,563 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:57:28,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:57:28,563 INFO L85 PathProgramCache]: Analyzing trace with hash -234378459, now seen corresponding path program 1 times [2023-12-25 07:57:28,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:57:28,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652704556] [2023-12-25 07:57:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:57:28,564 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 [2023-12-25 07:57:28,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:57:28,565 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) [2023-12-25 07:57:28,566 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 [2023-12-25 07:57:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:57:28,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 07:57:28,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:57:30,283 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 61 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:57:30,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:57:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 61 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:57:30,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:57:30,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652704556] [2023-12-25 07:57:30,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652704556] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:57:30,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:57:30,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2023-12-25 07:57:30,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642983988] [2023-12-25 07:57:30,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:57:30,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:57:30,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:57:30,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:57:30,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:57:30,822 INFO L87 Difference]: Start difference. First operand 68540 states and 83819 transitions. Second operand has 26 states, 26 states have (on average 14.615384615384615) internal successors, (380), 26 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:57:42,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:57:42,123 INFO L93 Difference]: Finished difference Result 203444 states and 246602 transitions. [2023-12-25 07:57:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-25 07:57:42,123 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.615384615384615) internal successors, (380), 26 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2023-12-25 07:57:42,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:57:42,352 INFO L225 Difference]: With dead ends: 203444 [2023-12-25 07:57:42,352 INFO L226 Difference]: Without dead ends: 176562 [2023-12-25 07:57:42,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=863, Invalid=3967, Unknown=0, NotChecked=0, Total=4830 [2023-12-25 07:57:42,384 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 1441 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-25 07:57:42,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 2689 Invalid, 2504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-25 07:57:42,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176562 states. [2023-12-25 07:57:50,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176562 to 145512. [2023-12-25 07:57:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145512 states, 145511 states have (on average 1.206176852609081) internal successors, (175512), 145511 states have internal predecessors, (175512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:57:50,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145512 states to 145512 states and 175512 transitions. [2023-12-25 07:57:50,559 INFO L78 Accepts]: Start accepts. Automaton has 145512 states and 175512 transitions. Word has length 205 [2023-12-25 07:57:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:57:50,559 INFO L495 AbstractCegarLoop]: Abstraction has 145512 states and 175512 transitions. [2023-12-25 07:57:50,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.615384615384615) internal successors, (380), 26 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:57:50,559 INFO L276 IsEmpty]: Start isEmpty. Operand 145512 states and 175512 transitions. [2023-12-25 07:57:50,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-25 07:57:50,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:57:50,575 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-25 07:57:50,581 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 (34)] Forceful destruction successful, exit code 0 [2023-12-25 07:57:50,779 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 [2023-12-25 07:57:50,779 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:57:50,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:57:50,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1623468127, now seen corresponding path program 1 times [2023-12-25 07:57:50,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:57:50,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360190175] [2023-12-25 07:57:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:57:50,780 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 [2023-12-25 07:57:50,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:57:50,781 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) [2023-12-25 07:57:50,782 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 [2023-12-25 07:57:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:57:50,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 07:57:50,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:57:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 54 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:57:52,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 07:57:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 54 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:57:52,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:57:52,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360190175] [2023-12-25 07:57:52,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360190175] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 07:57:52,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 07:57:52,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-25 07:57:52,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040940788] [2023-12-25 07:57:52,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 07:57:52,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 07:57:52,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:57:52,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 07:57:52,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-25 07:57:52,805 INFO L87 Difference]: Start difference. First operand 145512 states and 175512 transitions. Second operand has 26 states, 26 states have (on average 14.76923076923077) internal successors, (384), 25 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 07:58:15,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:58:15,206 INFO L93 Difference]: Finished difference Result 664530 states and 815192 transitions. [2023-12-25 07:58:15,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-25 07:58:15,207 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.76923076923077) internal successors, (384), 25 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2023-12-25 07:58:15,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:58:16,732 INFO L225 Difference]: With dead ends: 664530 [2023-12-25 07:58:16,732 INFO L226 Difference]: Without dead ends: 597684 [2023-12-25 07:58:16,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2622 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1444, Invalid=7486, Unknown=0, NotChecked=0, Total=8930 [2023-12-25 07:58:16,878 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 2990 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:58:16,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2990 Valid, 1652 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-25 07:58:17,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597684 states.