/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/recursive-simple/fibo_2calls_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:19:58,724 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:19:58,799 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 06:19:58,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:19:58,803 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:19:58,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:19:58,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:19:58,827 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:19:58,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:19:58,831 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:19:58,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:19:58,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:19:58,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:19:58,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:19:58,833 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:19:58,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:19:58,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:19:58,834 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:19:58,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:19:58,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:19:58,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:19:58,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:19:58,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:19:58,835 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:19:58,835 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:19:58,835 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:19:58,835 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:19:58,836 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:19:58,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:19:58,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:19:58,837 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:19:58,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:19:58,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:19:58,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:19:58,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:19:58,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:19:58,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:19:58,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:19:58,838 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:19:58,838 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:19:58,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:19:58,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:19:58,839 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:19:58,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:19:58,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:19:58,839 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:19:58,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:19:59,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:19:59,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:19:59,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:19:59,078 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:19:59,079 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:19:59,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2023-12-25 06:20:00,258 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:20:00,426 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:20:00,427 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2023-12-25 06:20:00,434 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43a70cdec/5c677a5e4aed4053b8de8b3cf37f6a8b/FLAG62d258c29 [2023-12-25 06:20:00,446 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43a70cdec/5c677a5e4aed4053b8de8b3cf37f6a8b [2023-12-25 06:20:00,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:20:00,450 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:20:00,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:20:00,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:20:00,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:20:00,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c8432a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00, skipping insertion in model container [2023-12-25 06:20:00,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,474 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:20:00,583 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c[950,963] [2023-12-25 06:20:00,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:20:00,597 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:20:00,607 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c[950,963] [2023-12-25 06:20:00,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:20:00,618 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:20:00,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00 WrapperNode [2023-12-25 06:20:00,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:20:00,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:20:00,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:20:00,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:20:00,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,630 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,642 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-12-25 06:20:00,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:20:00,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:20:00,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:20:00,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:20:00,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,652 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,660 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 06:20:00,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:20:00,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:20:00,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:20:00,667 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:20:00,668 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00" (1/1) ... [2023-12-25 06:20:00,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:20:00,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:20:00,726 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 06:20:00,787 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 06:20:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:20:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:20:00,800 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-12-25 06:20:00,802 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-12-25 06:20:00,802 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-12-25 06:20:00,802 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-12-25 06:20:00,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:20:00,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:20:00,855 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:20:00,859 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:20:00,953 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:20:00,970 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:20:00,971 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:20:00,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:20:00 BoogieIcfgContainer [2023-12-25 06:20:00,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:20:00,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:20:00,973 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:20:00,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:20:00,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:20:00" (1/3) ... [2023-12-25 06:20:00,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccf8ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:20:00, skipping insertion in model container [2023-12-25 06:20:00,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:00" (2/3) ... [2023-12-25 06:20:00,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccf8ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:20:00, skipping insertion in model container [2023-12-25 06:20:00,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:20:00" (3/3) ... [2023-12-25 06:20:00,977 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-1.c [2023-12-25 06:20:00,993 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:20:00,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:20:01,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:20:01,047 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;@1d058ad6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:20:01,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:20:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:20:01,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-25 06:20:01,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:01,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:01,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:01,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:01,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1178273046, now seen corresponding path program 1 times [2023-12-25 06:20:01,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:01,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188431130] [2023-12-25 06:20:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:01,074 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 06:20:01,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:01,077 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 06:20:01,106 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 06:20:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:01,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:20:01,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:01,196 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 06:20:01,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:20:01,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:01,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188431130] [2023-12-25 06:20:01,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188431130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:20:01,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:20:01,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:20:01,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358922838] [2023-12-25 06:20:01,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:20:01,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:20:01,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:20:01,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:20:01,223 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:20:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:01,286 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2023-12-25 06:20:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:20:01,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-25 06:20:01,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:01,293 INFO L225 Difference]: With dead ends: 32 [2023-12-25 06:20:01,293 INFO L226 Difference]: Without dead ends: 24 [2023-12-25 06:20:01,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:20:01,300 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:01,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 66 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:20:01,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-25 06:20:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-25 06:20:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-25 06:20:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-25 06:20:01,334 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 9 [2023-12-25 06:20:01,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:01,334 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-25 06:20:01,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:20:01,335 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-25 06:20:01,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-25 06:20:01,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:01,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:01,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:01,536 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 06:20:01,538 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:01,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1422996679, now seen corresponding path program 1 times [2023-12-25 06:20:01,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:01,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845473931] [2023-12-25 06:20:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:01,540 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 06:20:01,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:01,541 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 06:20:01,551 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 06:20:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:01,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:20:01,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:01,589 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 06:20:01,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:20:01,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:01,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845473931] [2023-12-25 06:20:01,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845473931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:20:01,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:20:01,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:20:01,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244541141] [2023-12-25 06:20:01,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:20:01,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:20:01,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:01,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:20:01,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:20:01,592 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:20:01,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:01,673 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2023-12-25 06:20:01,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:20:01,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-25 06:20:01,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:01,675 INFO L225 Difference]: With dead ends: 30 [2023-12-25 06:20:01,675 INFO L226 Difference]: Without dead ends: 26 [2023-12-25 06:20:01,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:20:01,678 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:01,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 65 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:20:01,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-25 06:20:01,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-12-25 06:20:01,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-25 06:20:01,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-25 06:20:01,693 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 10 [2023-12-25 06:20:01,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:01,694 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-25 06:20:01,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 06:20:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-25 06:20:01,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-25 06:20:01,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:01,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:01,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:01,899 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 06:20:01,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:01,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:01,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1917903498, now seen corresponding path program 1 times [2023-12-25 06:20:01,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:01,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125226072] [2023-12-25 06:20:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:01,904 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 06:20:01,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:01,906 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 06:20:01,947 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 06:20:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:01,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:20:01,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:20:02,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:20:02,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:02,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125226072] [2023-12-25 06:20:02,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125226072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:02,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:02,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-25 06:20:02,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785286899] [2023-12-25 06:20:02,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:02,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 06:20:02,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:02,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 06:20:02,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:20:02,227 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 10 states, 8 states have (on average 2.625) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:20:02,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:02,359 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2023-12-25 06:20:02,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:20:02,359 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 21 [2023-12-25 06:20:02,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:02,360 INFO L225 Difference]: With dead ends: 36 [2023-12-25 06:20:02,360 INFO L226 Difference]: Without dead ends: 32 [2023-12-25 06:20:02,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:20:02,361 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:02,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 65 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:20:02,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-25 06:20:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2023-12-25 06:20:02,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2023-12-25 06:20:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-12-25 06:20:02,368 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 21 [2023-12-25 06:20:02,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:02,370 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-12-25 06:20:02,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.625) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:20:02,370 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-12-25 06:20:02,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-25 06:20:02,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:02,372 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:02,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-25 06:20:02,574 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 06:20:02,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:02,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:02,576 INFO L85 PathProgramCache]: Analyzing trace with hash -773369340, now seen corresponding path program 1 times [2023-12-25 06:20:02,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:02,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559345724] [2023-12-25 06:20:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:02,576 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 06:20:02,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:02,577 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 06:20:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:02,599 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 06:20:02,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:20:02,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:02,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:20:02,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-25 06:20:02,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:02,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559345724] [2023-12-25 06:20:02,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559345724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:02,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:02,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-25 06:20:02,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188030749] [2023-12-25 06:20:02,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:02,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 06:20:02,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:02,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 06:20:02,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:20:02,792 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 10 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:20:02,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:02,914 INFO L93 Difference]: Finished difference Result 60 states and 95 transitions. [2023-12-25 06:20:02,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:20:02,915 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 22 [2023-12-25 06:20:02,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:02,916 INFO L225 Difference]: With dead ends: 60 [2023-12-25 06:20:02,916 INFO L226 Difference]: Without dead ends: 34 [2023-12-25 06:20:02,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:20:02,917 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:02,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 95 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:20:02,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-25 06:20:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2023-12-25 06:20:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2023-12-25 06:20:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2023-12-25 06:20:02,924 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 22 [2023-12-25 06:20:02,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:02,924 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2023-12-25 06:20:02,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.875) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-25 06:20:02,925 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2023-12-25 06:20:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-25 06:20:02,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:02,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:02,931 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 (5)] Ended with exit code 0 [2023-12-25 06:20:03,128 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 06:20:03,129 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:03,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:03,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1000055446, now seen corresponding path program 1 times [2023-12-25 06:20:03,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:03,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276331321] [2023-12-25 06:20:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:03,130 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 06:20:03,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:03,131 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 06:20:03,140 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 06:20:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:03,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:20:03,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-25 06:20:03,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 06:20:03,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:03,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276331321] [2023-12-25 06:20:03,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276331321] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:03,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:03,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2023-12-25 06:20:03,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940443687] [2023-12-25 06:20:03,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:03,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 06:20:03,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:03,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 06:20:03,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:20:03,593 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-25 06:20:03,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:03,780 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2023-12-25 06:20:03,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:20:03,781 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) Word has length 33 [2023-12-25 06:20:03,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:03,782 INFO L225 Difference]: With dead ends: 48 [2023-12-25 06:20:03,782 INFO L226 Difference]: Without dead ends: 44 [2023-12-25 06:20:03,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:20:03,783 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 31 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:03,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 87 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:20:03,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-25 06:20:03,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2023-12-25 06:20:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (21), 10 states have call predecessors, (21), 8 states have call successors, (21) [2023-12-25 06:20:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2023-12-25 06:20:03,792 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 53 transitions. Word has length 33 [2023-12-25 06:20:03,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:03,792 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 53 transitions. [2023-12-25 06:20:03,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 12 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-25 06:20:03,792 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2023-12-25 06:20:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-25 06:20:03,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:03,793 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-12-25 06:20:03,796 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 (6)] Ended with exit code 0 [2023-12-25 06:20:03,995 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 06:20:03,996 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:03,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:03,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1077323161, now seen corresponding path program 1 times [2023-12-25 06:20:03,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:03,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293413954] [2023-12-25 06:20:03,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:03,997 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 06:20:03,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:03,998 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 06:20:04,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 06:20:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:04,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:20:04,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-25 06:20:04,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-25 06:20:04,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:04,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293413954] [2023-12-25 06:20:04,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293413954] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:04,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:04,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2023-12-25 06:20:04,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388427294] [2023-12-25 06:20:04,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:04,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 06:20:04,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:04,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 06:20:04,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:20:04,271 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. Second operand has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-25 06:20:04,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:04,423 INFO L93 Difference]: Finished difference Result 78 states and 149 transitions. [2023-12-25 06:20:04,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:20:04,424 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) Word has length 34 [2023-12-25 06:20:04,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:04,425 INFO L225 Difference]: With dead ends: 78 [2023-12-25 06:20:04,425 INFO L226 Difference]: Without dead ends: 45 [2023-12-25 06:20:04,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:20:04,426 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:04,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 126 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:20:04,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-25 06:20:04,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-25 06:20:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 25 states have (on average 1.16) internal successors, (29), 28 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 9 states have return successors, (37), 14 states have call predecessors, (37), 10 states have call successors, (37) [2023-12-25 06:20:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 76 transitions. [2023-12-25 06:20:04,435 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 76 transitions. Word has length 34 [2023-12-25 06:20:04,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:04,435 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 76 transitions. [2023-12-25 06:20:04,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 12 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-25 06:20:04,435 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 76 transitions. [2023-12-25 06:20:04,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-25 06:20:04,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:04,437 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:04,455 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 (7)] Ended with exit code 0 [2023-12-25 06:20:04,639 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 06:20:04,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:04,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:04,640 INFO L85 PathProgramCache]: Analyzing trace with hash -797673590, now seen corresponding path program 2 times [2023-12-25 06:20:04,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:04,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881172270] [2023-12-25 06:20:04,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:04,640 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 06:20:04,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:04,641 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 06:20:04,668 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 06:20:04,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:04,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:04,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:20:04,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-25 06:20:04,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:05,226 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-25 06:20:05,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:05,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881172270] [2023-12-25 06:20:05,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881172270] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:05,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:05,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2023-12-25 06:20:05,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768599056] [2023-12-25 06:20:05,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:05,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:20:05,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:05,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:20:05,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:20:05,228 INFO L87 Difference]: Start difference. First operand 45 states and 76 transitions. Second operand has 14 states, 12 states have (on average 3.0) internal successors, (36), 14 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-25 06:20:05,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:05,534 INFO L93 Difference]: Finished difference Result 69 states and 141 transitions. [2023-12-25 06:20:05,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:20:05,536 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.0) internal successors, (36), 14 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) Word has length 45 [2023-12-25 06:20:05,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:05,538 INFO L225 Difference]: With dead ends: 69 [2023-12-25 06:20:05,538 INFO L226 Difference]: Without dead ends: 65 [2023-12-25 06:20:05,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:20:05,539 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:05,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 140 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:20:05,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-25 06:20:05,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2023-12-25 06:20:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 30 states have internal predecessors, (31), 11 states have call successors, (11), 2 states have call predecessors, (11), 10 states have return successors, (47), 16 states have call predecessors, (47), 11 states have call successors, (47) [2023-12-25 06:20:05,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 89 transitions. [2023-12-25 06:20:05,560 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 89 transitions. Word has length 45 [2023-12-25 06:20:05,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:05,560 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 89 transitions. [2023-12-25 06:20:05,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.0) internal successors, (36), 14 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-25 06:20:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 89 transitions. [2023-12-25 06:20:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-25 06:20:05,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:05,565 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:05,570 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 06:20:05,768 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 06:20:05,768 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:05,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:05,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1078970546, now seen corresponding path program 1 times [2023-12-25 06:20:05,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:05,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060685817] [2023-12-25 06:20:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:05,770 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 06:20:05,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:05,771 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 06:20:05,803 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 06:20:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:05,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:20:05,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-25 06:20:05,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-25 06:20:06,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060685817] [2023-12-25 06:20:06,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060685817] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:06,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:06,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2023-12-25 06:20:06,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091154298] [2023-12-25 06:20:06,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:06,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:20:06,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:06,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:20:06,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:20:06,158 INFO L87 Difference]: Start difference. First operand 49 states and 89 transitions. Second operand has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 14 states have internal predecessors, (37), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-25 06:20:06,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:06,350 INFO L93 Difference]: Finished difference Result 107 states and 251 transitions. [2023-12-25 06:20:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:20:06,351 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 14 states have internal predecessors, (37), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) Word has length 46 [2023-12-25 06:20:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:06,352 INFO L225 Difference]: With dead ends: 107 [2023-12-25 06:20:06,352 INFO L226 Difference]: Without dead ends: 60 [2023-12-25 06:20:06,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-25 06:20:06,354 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:06,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 181 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:20:06,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-25 06:20:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-25 06:20:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 13 states have call successors, (13), 2 states have call predecessors, (13), 13 states have return successors, (69), 21 states have call predecessors, (69), 13 states have call successors, (69) [2023-12-25 06:20:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 119 transitions. [2023-12-25 06:20:06,364 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 119 transitions. Word has length 46 [2023-12-25 06:20:06,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:06,364 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 119 transitions. [2023-12-25 06:20:06,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 14 states have internal predecessors, (37), 10 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 10 states have call successors, (11) [2023-12-25 06:20:06,365 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 119 transitions. [2023-12-25 06:20:06,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-25 06:20:06,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:06,366 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:06,377 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 (9)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:06,574 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 06:20:06,574 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:06,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash 82175210, now seen corresponding path program 3 times [2023-12-25 06:20:06,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:06,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331943567] [2023-12-25 06:20:06,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:06,575 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 06:20:06,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:06,577 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 06:20:06,604 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 06:20:06,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-25 06:20:06,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:06,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:20:06,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-25 06:20:06,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-25 06:20:06,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:06,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331943567] [2023-12-25 06:20:06,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331943567] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:06,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:06,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-25 06:20:06,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68644774] [2023-12-25 06:20:06,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:06,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 06:20:06,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:06,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 06:20:06,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:20:06,835 INFO L87 Difference]: Start difference. First operand 60 states and 119 transitions. Second operand has 10 states, 8 states have (on average 3.75) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-25 06:20:06,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:06,944 INFO L93 Difference]: Finished difference Result 82 states and 162 transitions. [2023-12-25 06:20:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:20:06,944 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 57 [2023-12-25 06:20:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:06,945 INFO L225 Difference]: With dead ends: 82 [2023-12-25 06:20:06,945 INFO L226 Difference]: Without dead ends: 78 [2023-12-25 06:20:06,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:20:06,946 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:06,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 89 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:20:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-25 06:20:06,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2023-12-25 06:20:06,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 13 states have call successors, (13), 2 states have call predecessors, (13), 13 states have return successors, (69), 21 states have call predecessors, (69), 13 states have call successors, (69) [2023-12-25 06:20:06,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 119 transitions. [2023-12-25 06:20:06,969 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 119 transitions. Word has length 57 [2023-12-25 06:20:06,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:06,969 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 119 transitions. [2023-12-25 06:20:06,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-25 06:20:06,969 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 119 transitions. [2023-12-25 06:20:06,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-25 06:20:06,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:06,970 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:06,980 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 06:20:07,172 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 06:20:07,173 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:07,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:07,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1783295408, now seen corresponding path program 2 times [2023-12-25 06:20:07,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:07,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830826286] [2023-12-25 06:20:07,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:07,174 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 06:20:07,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:07,175 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 06:20:07,184 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 06:20:07,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:07,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:07,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:20:07,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-25 06:20:07,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-25 06:20:08,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:08,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830826286] [2023-12-25 06:20:08,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830826286] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:08,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:08,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2023-12-25 06:20:08,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525759369] [2023-12-25 06:20:08,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:08,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 06:20:08,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:08,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 06:20:08,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:20:08,005 INFO L87 Difference]: Start difference. First operand 60 states and 119 transitions. Second operand has 16 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 16 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-25 06:20:08,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:08,536 INFO L93 Difference]: Finished difference Result 162 states and 459 transitions. [2023-12-25 06:20:08,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:20:08,536 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 16 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) Word has length 58 [2023-12-25 06:20:08,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:08,538 INFO L225 Difference]: With dead ends: 162 [2023-12-25 06:20:08,538 INFO L226 Difference]: Without dead ends: 104 [2023-12-25 06:20:08,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:20:08,540 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:08,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 161 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:20:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-25 06:20:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2023-12-25 06:20:08,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 59 states have internal predecessors, (61), 20 states have call successors, (20), 5 states have call predecessors, (20), 22 states have return successors, (150), 33 states have call predecessors, (150), 20 states have call successors, (150) [2023-12-25 06:20:08,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2023-12-25 06:20:08,586 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 58 [2023-12-25 06:20:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:08,586 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2023-12-25 06:20:08,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 16 states have internal predecessors, (43), 12 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 5 states have call predecessors, (14), 12 states have call successors, (14) [2023-12-25 06:20:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2023-12-25 06:20:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-25 06:20:08,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:08,588 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:08,593 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 06:20:08,788 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 06:20:08,789 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:08,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:08,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2115449141, now seen corresponding path program 2 times [2023-12-25 06:20:08,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:08,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623910105] [2023-12-25 06:20:08,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:08,790 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 06:20:08,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:08,792 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 06:20:08,796 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 06:20:08,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:08,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:08,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:20:08,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 56 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-25 06:20:08,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-25 06:20:09,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:09,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623910105] [2023-12-25 06:20:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623910105] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:09,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:09,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2023-12-25 06:20:09,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562136927] [2023-12-25 06:20:09,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:09,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 06:20:09,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:09,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 06:20:09,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:20:09,320 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 16 states have internal predecessors, (45), 13 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 6 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-25 06:20:09,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:09,583 INFO L93 Difference]: Finished difference Result 208 states and 647 transitions. [2023-12-25 06:20:09,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:20:09,583 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 16 states have internal predecessors, (45), 13 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 6 states have call predecessors, (16), 13 states have call successors, (16) Word has length 70 [2023-12-25 06:20:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:09,586 INFO L225 Difference]: With dead ends: 208 [2023-12-25 06:20:09,586 INFO L226 Difference]: Without dead ends: 112 [2023-12-25 06:20:09,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:20:09,588 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 29 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:09,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 209 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:20:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-25 06:20:09,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2023-12-25 06:20:09,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 61 states have (on average 1.098360655737705) internal successors, (67), 65 states have internal predecessors, (67), 22 states have call successors, (22), 5 states have call predecessors, (22), 25 states have return successors, (186), 38 states have call predecessors, (186), 22 states have call successors, (186) [2023-12-25 06:20:09,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 275 transitions. [2023-12-25 06:20:09,613 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 275 transitions. Word has length 70 [2023-12-25 06:20:09,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:09,614 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 275 transitions. [2023-12-25 06:20:09,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 16 states have internal predecessors, (45), 13 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 6 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-25 06:20:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 275 transitions. [2023-12-25 06:20:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-25 06:20:09,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:09,619 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:09,635 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 06:20:09,822 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 06:20:09,822 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:09,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1424247677, now seen corresponding path program 3 times [2023-12-25 06:20:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:09,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557989163] [2023-12-25 06:20:09,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:09,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:09,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:09,824 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 06:20:09,826 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 06:20:09,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:20:09,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:09,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 06:20:09,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 263 proven. 5 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2023-12-25 06:20:09,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 195 proven. 19 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2023-12-25 06:20:10,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:10,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557989163] [2023-12-25 06:20:10,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557989163] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:10,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:10,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-25 06:20:10,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681007992] [2023-12-25 06:20:10,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:10,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:20:10,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:20:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:20:10,443 INFO L87 Difference]: Start difference. First operand 109 states and 275 transitions. Second operand has 14 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 8 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (21), 6 states have call predecessors, (21), 8 states have call successors, (21) [2023-12-25 06:20:10,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:10,697 INFO L93 Difference]: Finished difference Result 222 states and 707 transitions. [2023-12-25 06:20:10,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:20:10,697 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 8 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (21), 6 states have call predecessors, (21), 8 states have call successors, (21) Word has length 142 [2023-12-25 06:20:10,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:10,699 INFO L225 Difference]: With dead ends: 222 [2023-12-25 06:20:10,699 INFO L226 Difference]: Without dead ends: 115 [2023-12-25 06:20:10,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:20:10,701 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:10,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 159 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:20:10,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-25 06:20:10,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-25 06:20:10,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 69 states have internal predecessors, (71), 22 states have call successors, (22), 5 states have call predecessors, (22), 27 states have return successors, (179), 40 states have call predecessors, (179), 22 states have call successors, (179) [2023-12-25 06:20:10,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 272 transitions. [2023-12-25 06:20:10,710 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 272 transitions. Word has length 142 [2023-12-25 06:20:10,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:10,711 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 272 transitions. [2023-12-25 06:20:10,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 8 states have call successors, (15), 2 states have call predecessors, (15), 6 states have return successors, (21), 6 states have call predecessors, (21), 8 states have call successors, (21) [2023-12-25 06:20:10,711 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 272 transitions. [2023-12-25 06:20:10,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-25 06:20:10,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:10,713 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:10,728 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 (13)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:10,915 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 06:20:10,916 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:10,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:10,916 INFO L85 PathProgramCache]: Analyzing trace with hash 705383518, now seen corresponding path program 3 times [2023-12-25 06:20:10,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:10,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217677067] [2023-12-25 06:20:10,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:10,917 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 06:20:10,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:10,934 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 06:20:10,963 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 06:20:10,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-25 06:20:10,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:10,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 06:20:10,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-25 06:20:11,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:20:11,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:11,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217677067] [2023-12-25 06:20:11,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217677067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:20:11,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:20:11,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 06:20:11,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284825804] [2023-12-25 06:20:11,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:20:11,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:20:11,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:11,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:20:11,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:20:11,016 INFO L87 Difference]: Start difference. First operand 115 states and 272 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-25 06:20:11,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:11,069 INFO L93 Difference]: Finished difference Result 210 states and 572 transitions. [2023-12-25 06:20:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:20:11,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2023-12-25 06:20:11,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:11,072 INFO L225 Difference]: With dead ends: 210 [2023-12-25 06:20:11,072 INFO L226 Difference]: Without dead ends: 95 [2023-12-25 06:20:11,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-25 06:20:11,074 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 12 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:11,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 75 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:20:11,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-25 06:20:11,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-25 06:20:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 57 states have internal predecessors, (59), 19 states have call successors, (19), 5 states have call predecessors, (19), 21 states have return successors, (113), 32 states have call predecessors, (113), 19 states have call successors, (113) [2023-12-25 06:20:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 191 transitions. [2023-12-25 06:20:11,083 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 191 transitions. Word has length 94 [2023-12-25 06:20:11,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:11,083 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 191 transitions. [2023-12-25 06:20:11,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-25 06:20:11,083 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 191 transitions. [2023-12-25 06:20:11,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-25 06:20:11,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:11,084 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:11,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:11,287 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 06:20:11,287 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:11,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash -187948887, now seen corresponding path program 1 times [2023-12-25 06:20:11,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:11,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81569431] [2023-12-25 06:20:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:11,288 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 06:20:11,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:11,289 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 06:20:11,317 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 06:20:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:11,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 06:20:11,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 43 proven. 139 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-25 06:20:11,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 43 proven. 155 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-12-25 06:20:11,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:11,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81569431] [2023-12-25 06:20:11,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81569431] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:11,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:11,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 18 [2023-12-25 06:20:11,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171679671] [2023-12-25 06:20:11,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:11,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-25 06:20:11,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:11,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-25 06:20:11,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-25 06:20:11,972 INFO L87 Difference]: Start difference. First operand 95 states and 191 transitions. Second operand has 18 states, 16 states have (on average 3.4375) internal successors, (55), 18 states have internal predecessors, (55), 15 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 7 states have call predecessors, (21), 15 states have call successors, (21) [2023-12-25 06:20:12,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:12,228 INFO L93 Difference]: Finished difference Result 199 states and 508 transitions. [2023-12-25 06:20:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:20:12,228 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.4375) internal successors, (55), 18 states have internal predecessors, (55), 15 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 7 states have call predecessors, (21), 15 states have call successors, (21) Word has length 120 [2023-12-25 06:20:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:12,230 INFO L225 Difference]: With dead ends: 199 [2023-12-25 06:20:12,230 INFO L226 Difference]: Without dead ends: 106 [2023-12-25 06:20:12,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:20:12,231 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:12,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 261 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:20:12,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-25 06:20:12,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-25 06:20:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 63 states have internal predecessors, (65), 21 states have call successors, (21), 5 states have call predecessors, (21), 24 states have return successors, (142), 37 states have call predecessors, (142), 21 states have call successors, (142) [2023-12-25 06:20:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 228 transitions. [2023-12-25 06:20:12,244 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 228 transitions. Word has length 120 [2023-12-25 06:20:12,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:12,244 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 228 transitions. [2023-12-25 06:20:12,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.4375) internal successors, (55), 18 states have internal predecessors, (55), 15 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 7 states have call predecessors, (21), 15 states have call successors, (21) [2023-12-25 06:20:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 228 transitions. [2023-12-25 06:20:12,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-12-25 06:20:12,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:12,248 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 26, 26, 24, 17, 16, 16, 16, 16, 16, 16, 16, 13, 13, 13, 13, 13, 13, 8, 3, 2, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:12,263 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 06:20:12,452 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 06:20:12,452 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:12,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash -273803883, now seen corresponding path program 2 times [2023-12-25 06:20:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:12,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592331712] [2023-12-25 06:20:12,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:12,453 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 06:20:12,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:12,454 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 06:20:12,482 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 06:20:12,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:12,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:12,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:20:12,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 80 proven. 814 refuted. 0 times theorem prover too weak. 3508 trivial. 0 not checked. [2023-12-25 06:20:12,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 80 proven. 835 refuted. 0 times theorem prover too weak. 3487 trivial. 0 not checked. [2023-12-25 06:20:14,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:14,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592331712] [2023-12-25 06:20:14,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592331712] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:14,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:14,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 20 [2023-12-25 06:20:14,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400165777] [2023-12-25 06:20:14,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:14,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 06:20:14,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:14,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 06:20:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:20:14,088 INFO L87 Difference]: Start difference. First operand 106 states and 228 transitions. Second operand has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 20 states have internal predecessors, (59), 17 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 8 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-25 06:20:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:15,173 INFO L93 Difference]: Finished difference Result 290 states and 861 transitions. [2023-12-25 06:20:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-25 06:20:15,174 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 20 states have internal predecessors, (59), 17 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 8 states have call predecessors, (24), 17 states have call successors, (24) Word has length 368 [2023-12-25 06:20:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:15,177 INFO L225 Difference]: With dead ends: 290 [2023-12-25 06:20:15,177 INFO L226 Difference]: Without dead ends: 184 [2023-12-25 06:20:15,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=1312, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 06:20:15,179 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 122 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:15,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 158 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:20:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-25 06:20:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 177. [2023-12-25 06:20:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 103 states have (on average 1.0970873786407767) internal successors, (113), 105 states have internal predecessors, (113), 34 states have call successors, (34), 11 states have call predecessors, (34), 39 states have return successors, (278), 60 states have call predecessors, (278), 34 states have call successors, (278) [2023-12-25 06:20:15,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 425 transitions. [2023-12-25 06:20:15,200 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 425 transitions. Word has length 368 [2023-12-25 06:20:15,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:15,200 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 425 transitions. [2023-12-25 06:20:15,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 20 states have internal predecessors, (59), 17 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 8 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-25 06:20:15,201 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 425 transitions. [2023-12-25 06:20:15,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-25 06:20:15,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:15,208 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 42, 42, 38, 30, 25, 25, 25, 25, 25, 25, 21, 21, 21, 21, 21, 21, 21, 13, 9, 4, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:15,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:15,414 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 06:20:15,414 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:15,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:15,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1573896179, now seen corresponding path program 3 times [2023-12-25 06:20:15,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:15,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585965212] [2023-12-25 06:20:15,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:15,416 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 06:20:15,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:15,433 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 06:20:15,464 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 06:20:15,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-25 06:20:15,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:15,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 06:20:15,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:15,646 INFO L134 CoverageAnalysis]: Checked inductivity of 11212 backedges. 2065 proven. 18 refuted. 0 times theorem prover too weak. 9129 trivial. 0 not checked. [2023-12-25 06:20:15,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 11212 backedges. 1606 proven. 40 refuted. 0 times theorem prover too weak. 9566 trivial. 0 not checked. [2023-12-25 06:20:17,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:17,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585965212] [2023-12-25 06:20:17,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585965212] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:17,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:17,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 16 [2023-12-25 06:20:17,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164605601] [2023-12-25 06:20:17,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:17,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 06:20:17,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 06:20:17,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:20:17,369 INFO L87 Difference]: Start difference. First operand 177 states and 425 transitions. Second operand has 16 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 12 states have call successors, (19), 2 states have call predecessors, (19), 7 states have return successors, (24), 7 states have call predecessors, (24), 12 states have call successors, (24) [2023-12-25 06:20:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:17,853 INFO L93 Difference]: Finished difference Result 357 states and 1061 transitions. [2023-12-25 06:20:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 06:20:17,854 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 12 states have call successors, (19), 2 states have call predecessors, (19), 7 states have return successors, (24), 7 states have call predecessors, (24), 12 states have call successors, (24) Word has length 583 [2023-12-25 06:20:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:17,856 INFO L225 Difference]: With dead ends: 357 [2023-12-25 06:20:17,856 INFO L226 Difference]: Without dead ends: 180 [2023-12-25 06:20:17,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 1150 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:20:17,858 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:17,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 236 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:20:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-25 06:20:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 172. [2023-12-25 06:20:17,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 102 states have (on average 1.0980392156862746) internal successors, (112), 104 states have internal predecessors, (112), 32 states have call successors, (32), 12 states have call predecessors, (32), 37 states have return successors, (242), 55 states have call predecessors, (242), 32 states have call successors, (242) [2023-12-25 06:20:17,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 386 transitions. [2023-12-25 06:20:17,888 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 386 transitions. Word has length 583 [2023-12-25 06:20:17,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:17,889 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 386 transitions. [2023-12-25 06:20:17,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 12 states have call successors, (19), 2 states have call predecessors, (19), 7 states have return successors, (24), 7 states have call predecessors, (24), 12 states have call successors, (24) [2023-12-25 06:20:17,889 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 386 transitions. [2023-12-25 06:20:17,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-25 06:20:17,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:17,893 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 24, 24, 23, 18, 16, 16, 16, 16, 16, 16, 15, 12, 12, 12, 12, 12, 12, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:17,898 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 06:20:18,093 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 06:20:18,093 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:18,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:18,094 INFO L85 PathProgramCache]: Analyzing trace with hash -772663922, now seen corresponding path program 4 times [2023-12-25 06:20:18,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:18,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855468016] [2023-12-25 06:20:18,094 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:20:18,094 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 06:20:18,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:18,113 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 06:20:18,117 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 06:20:18,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:20:18,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:18,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:20:18,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4180 backedges. 145 proven. 736 refuted. 0 times theorem prover too weak. 3299 trivial. 0 not checked. [2023-12-25 06:20:18,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:19,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4180 backedges. 145 proven. 760 refuted. 0 times theorem prover too weak. 3275 trivial. 0 not checked. [2023-12-25 06:20:19,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:19,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855468016] [2023-12-25 06:20:19,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855468016] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:19,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:19,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 20 [2023-12-25 06:20:19,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003712464] [2023-12-25 06:20:19,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:19,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 06:20:19,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:19,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 06:20:19,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:20:19,531 INFO L87 Difference]: Start difference. First operand 172 states and 386 transitions. Second operand has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 17 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 8 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-25 06:20:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:19,835 INFO L93 Difference]: Finished difference Result 364 states and 1111 transitions. [2023-12-25 06:20:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 06:20:19,835 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 17 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 8 states have call predecessors, (24), 17 states have call successors, (24) Word has length 358 [2023-12-25 06:20:19,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:19,839 INFO L225 Difference]: With dead ends: 364 [2023-12-25 06:20:19,839 INFO L226 Difference]: Without dead ends: 194 [2023-12-25 06:20:19,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-12-25 06:20:19,841 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 23 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:19,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 282 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:20:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-25 06:20:19,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-12-25 06:20:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 114 states have (on average 1.087719298245614) internal successors, (124), 116 states have internal predecessors, (124), 36 states have call successors, (36), 12 states have call predecessors, (36), 43 states have return successors, (324), 65 states have call predecessors, (324), 36 states have call successors, (324) [2023-12-25 06:20:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 484 transitions. [2023-12-25 06:20:19,859 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 484 transitions. Word has length 358 [2023-12-25 06:20:19,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:19,860 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 484 transitions. [2023-12-25 06:20:19,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 17 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 8 states have call predecessors, (24), 17 states have call successors, (24) [2023-12-25 06:20:19,860 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 484 transitions. [2023-12-25 06:20:19,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-12-25 06:20:19,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:19,863 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 20, 20, 19, 18, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 9, 6, 6, 2, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:19,869 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 06:20:20,069 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 06:20:20,070 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:20,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:20,070 INFO L85 PathProgramCache]: Analyzing trace with hash 992752231, now seen corresponding path program 5 times [2023-12-25 06:20:20,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:20,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220517222] [2023-12-25 06:20:20,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:20:20,071 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 06:20:20,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:20,072 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 06:20:20,126 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 06:20:20,164 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-25 06:20:20,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:20,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:20:20,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2617 backedges. 1128 proven. 28 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2023-12-25 06:20:20,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:20,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2617 backedges. 190 proven. 411 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-12-25 06:20:20,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:20,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220517222] [2023-12-25 06:20:20,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220517222] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:20,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:20,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2023-12-25 06:20:20,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649649189] [2023-12-25 06:20:20,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:20,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 06:20:20,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:20,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 06:20:20,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-25 06:20:20,934 INFO L87 Difference]: Start difference. First operand 194 states and 484 transitions. Second operand has 13 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 10 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 9 states have call predecessors, (25), 10 states have call successors, (25) [2023-12-25 06:20:21,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:21,139 INFO L93 Difference]: Finished difference Result 544 states and 2463 transitions. [2023-12-25 06:20:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:20:21,140 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 10 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 9 states have call predecessors, (25), 10 states have call successors, (25) Word has length 288 [2023-12-25 06:20:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:21,149 INFO L225 Difference]: With dead ends: 544 [2023-12-25 06:20:21,149 INFO L226 Difference]: Without dead ends: 352 [2023-12-25 06:20:21,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:20:21,155 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:21,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 130 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:20:21,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-25 06:20:21,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 318. [2023-12-25 06:20:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 179 states have (on average 1.0670391061452513) internal successors, (191), 181 states have internal predecessors, (191), 64 states have call successors, (64), 13 states have call predecessors, (64), 74 states have return successors, (1001), 123 states have call predecessors, (1001), 64 states have call successors, (1001) [2023-12-25 06:20:21,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 1256 transitions. [2023-12-25 06:20:21,212 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 1256 transitions. Word has length 288 [2023-12-25 06:20:21,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:21,212 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 1256 transitions. [2023-12-25 06:20:21,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 10 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (25), 9 states have call predecessors, (25), 10 states have call successors, (25) [2023-12-25 06:20:21,213 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 1256 transitions. [2023-12-25 06:20:21,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2023-12-25 06:20:21,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:21,227 INFO L195 NwaCegarLoop]: trace histogram [81, 81, 70, 70, 60, 46, 40, 40, 40, 40, 40, 40, 35, 35, 35, 35, 35, 35, 35, 20, 11, 10, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:21,232 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 06:20:21,430 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 06:20:21,430 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:21,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:21,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1719554341, now seen corresponding path program 6 times [2023-12-25 06:20:21,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:21,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818984866] [2023-12-25 06:20:21,432 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:20:21,432 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 06:20:21,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:21,433 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 06:20:21,449 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 06:20:21,568 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-25 06:20:21,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:21,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 06:20:21,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 29550 backedges. 1639 proven. 5 refuted. 0 times theorem prover too weak. 27906 trivial. 0 not checked. [2023-12-25 06:20:21,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:23,700 INFO L134 CoverageAnalysis]: Checked inductivity of 29550 backedges. 1641 proven. 4 refuted. 0 times theorem prover too weak. 27905 trivial. 0 not checked. [2023-12-25 06:20:23,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:23,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818984866] [2023-12-25 06:20:23,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818984866] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:23,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:23,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-25 06:20:23,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145879058] [2023-12-25 06:20:23,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:23,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:20:23,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:23,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:20:23,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:20:23,702 INFO L87 Difference]: Start difference. First operand 318 states and 1256 transitions. Second operand has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-25 06:20:23,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:23,960 INFO L93 Difference]: Finished difference Result 756 states and 3988 transitions. [2023-12-25 06:20:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 06:20:23,961 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 940 [2023-12-25 06:20:23,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:23,969 INFO L225 Difference]: With dead ends: 756 [2023-12-25 06:20:23,969 INFO L226 Difference]: Without dead ends: 439 [2023-12-25 06:20:23,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1885 GetRequests, 1866 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:20:23,977 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 39 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:23,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 112 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:20:23,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-12-25 06:20:24,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 319. [2023-12-25 06:20:24,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 172 states have (on average 1.0813953488372092) internal successors, (186), 174 states have internal predecessors, (186), 77 states have call successors, (77), 14 states have call predecessors, (77), 69 states have return successors, (1053), 130 states have call predecessors, (1053), 77 states have call successors, (1053) [2023-12-25 06:20:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 1316 transitions. [2023-12-25 06:20:24,059 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 1316 transitions. Word has length 940 [2023-12-25 06:20:24,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:24,060 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 1316 transitions. [2023-12-25 06:20:24,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-25 06:20:24,060 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 1316 transitions. [2023-12-25 06:20:24,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3489 [2023-12-25 06:20:24,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:24,129 INFO L195 NwaCegarLoop]: trace histogram [319, 319, 244, 244, 215, 173, 159, 159, 159, 159, 159, 159, 146, 122, 122, 122, 122, 122, 122, 56, 51, 29, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:24,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:24,332 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 06:20:24,332 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:24,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:24,333 INFO L85 PathProgramCache]: Analyzing trace with hash 80554745, now seen corresponding path program 7 times [2023-12-25 06:20:24,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:24,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145925834] [2023-12-25 06:20:24,335 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:20:24,335 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 06:20:24,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:24,343 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 06:20:24,343 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 06:20:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:25,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 4908 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:20:25,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 419177 backedges. 1185 proven. 11257 refuted. 0 times theorem prover too weak. 406735 trivial. 0 not checked. [2023-12-25 06:20:26,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 419177 backedges. 1185 proven. 11297 refuted. 0 times theorem prover too weak. 406695 trivial. 0 not checked. [2023-12-25 06:20:34,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:34,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145925834] [2023-12-25 06:20:34,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145925834] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:34,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:34,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21] total 24 [2023-12-25 06:20:34,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805710328] [2023-12-25 06:20:34,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:34,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 06:20:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 06:20:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:20:34,650 INFO L87 Difference]: Start difference. First operand 319 states and 1316 transitions. Second operand has 24 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 24 states have internal predecessors, (69), 21 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 10 states have call predecessors, (30), 21 states have call successors, (30) [2023-12-25 06:20:36,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:36,824 INFO L93 Difference]: Finished difference Result 844 states and 4719 transitions. [2023-12-25 06:20:36,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-25 06:20:36,825 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 24 states have internal predecessors, (69), 21 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 10 states have call predecessors, (30), 21 states have call successors, (30) Word has length 3488 [2023-12-25 06:20:36,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:36,835 INFO L225 Difference]: With dead ends: 844 [2023-12-25 06:20:36,835 INFO L226 Difference]: Without dead ends: 523 [2023-12-25 06:20:36,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7008 GetRequests, 6952 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=480, Invalid=2826, Unknown=0, NotChecked=0, Total=3306 [2023-12-25 06:20:36,845 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 134 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:36,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 239 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-25 06:20:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-25 06:20:36,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 451. [2023-12-25 06:20:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 248 states have (on average 1.1008064516129032) internal successors, (273), 247 states have internal predecessors, (273), 108 states have call successors, (108), 25 states have call predecessors, (108), 94 states have return successors, (1424), 178 states have call predecessors, (1424), 108 states have call successors, (1424) [2023-12-25 06:20:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1805 transitions. [2023-12-25 06:20:36,994 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1805 transitions. Word has length 3488 [2023-12-25 06:20:36,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:36,994 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 1805 transitions. [2023-12-25 06:20:36,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 24 states have internal predecessors, (69), 21 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 10 states have call predecessors, (30), 21 states have call successors, (30) [2023-12-25 06:20:36,995 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1805 transitions. [2023-12-25 06:20:37,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1029 [2023-12-25 06:20:37,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:37,043 INFO L195 NwaCegarLoop]: trace histogram [89, 89, 76, 76, 65, 52, 44, 44, 44, 44, 44, 44, 38, 38, 38, 38, 38, 38, 37, 21, 14, 11, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:37,120 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 (21)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:37,256 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 06:20:37,256 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:37,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:37,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1989992076, now seen corresponding path program 8 times [2023-12-25 06:20:37,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:37,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252113065] [2023-12-25 06:20:37,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:37,258 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 06:20:37,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:37,259 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 06:20:37,261 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 06:20:37,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:37,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:37,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:20:37,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 35417 backedges. 502 proven. 3045 refuted. 0 times theorem prover too weak. 31870 trivial. 0 not checked. [2023-12-25 06:20:38,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:40,470 INFO L134 CoverageAnalysis]: Checked inductivity of 35417 backedges. 502 proven. 3089 refuted. 0 times theorem prover too weak. 31826 trivial. 0 not checked. [2023-12-25 06:20:40,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:40,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252113065] [2023-12-25 06:20:40,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252113065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:40,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:40,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21] total 24 [2023-12-25 06:20:40,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144427249] [2023-12-25 06:20:40,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:40,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 06:20:40,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:40,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 06:20:40,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:20:40,473 INFO L87 Difference]: Start difference. First operand 451 states and 1805 transitions. Second operand has 24 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 24 states have internal predecessors, (70), 21 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 10 states have call predecessors, (30), 21 states have call successors, (30) [2023-12-25 06:20:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:40,995 INFO L93 Difference]: Finished difference Result 1018 states and 5682 transitions. [2023-12-25 06:20:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 06:20:40,996 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 24 states have internal predecessors, (70), 21 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 10 states have call predecessors, (30), 21 states have call successors, (30) Word has length 1028 [2023-12-25 06:20:40,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:41,011 INFO L225 Difference]: With dead ends: 1018 [2023-12-25 06:20:41,012 INFO L226 Difference]: Without dead ends: 569 [2023-12-25 06:20:41,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2063 GetRequests, 2032 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:20:41,021 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:41,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 423 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:20:41,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2023-12-25 06:20:41,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 515. [2023-12-25 06:20:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 280 states have (on average 1.0892857142857142) internal successors, (305), 279 states have internal predecessors, (305), 124 states have call successors, (124), 25 states have call predecessors, (124), 110 states have return successors, (1934), 210 states have call predecessors, (1934), 124 states have call successors, (1934) [2023-12-25 06:20:41,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 2363 transitions. [2023-12-25 06:20:41,119 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 2363 transitions. Word has length 1028 [2023-12-25 06:20:41,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:41,120 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 2363 transitions. [2023-12-25 06:20:41,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 24 states have internal predecessors, (70), 21 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 10 states have call predecessors, (30), 21 states have call successors, (30) [2023-12-25 06:20:41,121 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 2363 transitions. [2023-12-25 06:20:41,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1863 [2023-12-25 06:20:41,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:41,197 INFO L195 NwaCegarLoop]: trace histogram [179, 179, 122, 122, 110, 93, 89, 89, 89, 89, 89, 89, 86, 61, 61, 61, 61, 61, 61, 32, 21, 12, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:41,209 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 06:20:41,409 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 06:20:41,409 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:41,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:41,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2135202956, now seen corresponding path program 9 times [2023-12-25 06:20:41,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:41,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086804474] [2023-12-25 06:20:41,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:41,411 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 06:20:41,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:41,416 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 06:20:41,466 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 06:20:41,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-25 06:20:41,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:41,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:20:41,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 120759 backedges. 3712 proven. 0 refuted. 0 times theorem prover too weak. 117047 trivial. 0 not checked. [2023-12-25 06:20:41,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:20:41,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:41,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086804474] [2023-12-25 06:20:41,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086804474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:20:41,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:20:41,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 06:20:41,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652159430] [2023-12-25 06:20:41,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:20:41,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:20:41,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:41,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:20:41,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:20:41,679 INFO L87 Difference]: Start difference. First operand 515 states and 2363 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-25 06:20:41,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:41,753 INFO L93 Difference]: Finished difference Result 776 states and 3919 transitions. [2023-12-25 06:20:41,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:20:41,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 1862 [2023-12-25 06:20:41,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:41,757 INFO L225 Difference]: With dead ends: 776 [2023-12-25 06:20:41,758 INFO L226 Difference]: Without dead ends: 239 [2023-12-25 06:20:41,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1862 GetRequests, 1857 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-25 06:20:41,769 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:41,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 64 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:20:41,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-25 06:20:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 222. [2023-12-25 06:20:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 128 states have (on average 1.078125) internal successors, (138), 127 states have internal predecessors, (138), 50 states have call successors, (50), 15 states have call predecessors, (50), 43 states have return successors, (345), 79 states have call predecessors, (345), 50 states have call successors, (345) [2023-12-25 06:20:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 533 transitions. [2023-12-25 06:20:41,791 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 533 transitions. Word has length 1862 [2023-12-25 06:20:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:41,792 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 533 transitions. [2023-12-25 06:20:41,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-25 06:20:41,792 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 533 transitions. [2023-12-25 06:20:41,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1374 [2023-12-25 06:20:41,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:41,804 INFO L195 NwaCegarLoop]: trace histogram [112, 112, 105, 105, 90, 86, 56, 56, 56, 56, 56, 56, 52, 52, 52, 52, 52, 52, 38, 30, 22, 19, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:41,823 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 06:20:42,024 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 06:20:42,024 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:42,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:42,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1844471852, now seen corresponding path program 10 times [2023-12-25 06:20:42,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:42,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062094568] [2023-12-25 06:20:42,026 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:20:42,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:42,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:42,027 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 06:20:42,062 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 06:20:42,507 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:20:42,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:42,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-25 06:20:42,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 62962 backedges. 604 proven. 4744 refuted. 0 times theorem prover too weak. 57614 trivial. 0 not checked. [2023-12-25 06:20:42,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 62962 backedges. 604 proven. 4800 refuted. 0 times theorem prover too weak. 57558 trivial. 0 not checked. [2023-12-25 06:20:46,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:46,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062094568] [2023-12-25 06:20:46,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062094568] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:46,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:46,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23] total 26 [2023-12-25 06:20:46,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323491828] [2023-12-25 06:20:46,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:46,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 06:20:46,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:46,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 06:20:46,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2023-12-25 06:20:46,241 INFO L87 Difference]: Start difference. First operand 222 states and 533 transitions. Second operand has 26 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 23 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 11 states have call predecessors, (33), 23 states have call successors, (33) [2023-12-25 06:20:46,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:46,782 INFO L93 Difference]: Finished difference Result 501 states and 1783 transitions. [2023-12-25 06:20:46,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 06:20:46,783 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 23 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 11 states have call predecessors, (33), 23 states have call successors, (33) Word has length 1373 [2023-12-25 06:20:46,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:46,787 INFO L225 Difference]: With dead ends: 501 [2023-12-25 06:20:46,788 INFO L226 Difference]: Without dead ends: 281 [2023-12-25 06:20:46,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2754 GetRequests, 2720 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 06:20:46,790 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 39 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:46,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 475 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:20:46,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-25 06:20:46,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 260. [2023-12-25 06:20:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 148 states have (on average 1.0675675675675675) internal successors, (158), 147 states have internal predecessors, (158), 58 states have call successors, (58), 15 states have call predecessors, (58), 53 states have return successors, (537), 97 states have call predecessors, (537), 58 states have call successors, (537) [2023-12-25 06:20:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 753 transitions. [2023-12-25 06:20:46,820 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 753 transitions. Word has length 1373 [2023-12-25 06:20:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:46,820 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 753 transitions. [2023-12-25 06:20:46,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 23 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 11 states have call predecessors, (33), 23 states have call successors, (33) [2023-12-25 06:20:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 753 transitions. [2023-12-25 06:20:46,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1502 [2023-12-25 06:20:46,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:46,836 INFO L195 NwaCegarLoop]: trace histogram [128, 128, 109, 109, 102, 92, 64, 64, 64, 64, 64, 64, 54, 54, 54, 54, 54, 54, 48, 28, 26, 17, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:46,866 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 (24)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:47,048 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 06:20:47,049 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:47,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:47,049 INFO L85 PathProgramCache]: Analyzing trace with hash -587087984, now seen corresponding path program 11 times [2023-12-25 06:20:47,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:47,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976083190] [2023-12-25 06:20:47,050 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:20:47,050 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 06:20:47,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:47,051 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 06:20:47,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-25 06:20:47,400 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-12-25 06:20:47,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:47,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 06:20:47,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 75734 backedges. 35818 proven. 700 refuted. 0 times theorem prover too weak. 39216 trivial. 0 not checked. [2023-12-25 06:20:47,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 75734 backedges. 2064 proven. 5693 refuted. 0 times theorem prover too weak. 67977 trivial. 0 not checked. [2023-12-25 06:20:52,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:52,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976083190] [2023-12-25 06:20:52,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976083190] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:52,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:52,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 30] total 37 [2023-12-25 06:20:52,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527804444] [2023-12-25 06:20:52,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:52,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-25 06:20:52,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:52,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-25 06:20:52,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1160, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 06:20:52,542 INFO L87 Difference]: Start difference. First operand 260 states and 753 transitions. Second operand has 37 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 29 states have call successors, (39), 2 states have call predecessors, (39), 14 states have return successors, (48), 15 states have call predecessors, (48), 29 states have call successors, (48) [2023-12-25 06:20:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:54,448 INFO L93 Difference]: Finished difference Result 475 states and 1606 transitions. [2023-12-25 06:20:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-25 06:20:54,449 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 29 states have call successors, (39), 2 states have call predecessors, (39), 14 states have return successors, (48), 15 states have call predecessors, (48), 29 states have call successors, (48) Word has length 1501 [2023-12-25 06:20:54,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:54,451 INFO L225 Difference]: With dead ends: 475 [2023-12-25 06:20:54,452 INFO L226 Difference]: Without dead ends: 200 [2023-12-25 06:20:54,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3021 GetRequests, 2965 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=536, Invalid=2770, Unknown=0, NotChecked=0, Total=3306 [2023-12-25 06:20:54,456 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 87 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:54,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 547 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 06:20:54,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-25 06:20:54,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 180. [2023-12-25 06:20:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 113 states have (on average 1.0707964601769913) internal successors, (121), 110 states have internal predecessors, (121), 38 states have call successors, (38), 20 states have call predecessors, (38), 28 states have return successors, (139), 49 states have call predecessors, (139), 38 states have call successors, (139) [2023-12-25 06:20:54,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 298 transitions. [2023-12-25 06:20:54,474 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 298 transitions. Word has length 1501 [2023-12-25 06:20:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:54,474 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 298 transitions. [2023-12-25 06:20:54,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 2.914285714285714) internal successors, (102), 35 states have internal predecessors, (102), 29 states have call successors, (39), 2 states have call predecessors, (39), 14 states have return successors, (48), 15 states have call predecessors, (48), 29 states have call successors, (48) [2023-12-25 06:20:54,474 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 298 transitions. [2023-12-25 06:20:54,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1512 [2023-12-25 06:20:54,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:54,488 INFO L195 NwaCegarLoop]: trace histogram [123, 123, 116, 116, 97, 96, 61, 61, 61, 61, 61, 61, 58, 58, 58, 58, 58, 58, 38, 36, 27, 19, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:54,506 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 06:20:54,695 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 06:20:54,695 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:54,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:54,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2078591798, now seen corresponding path program 12 times [2023-12-25 06:20:54,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:54,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633851317] [2023-12-25 06:20:54,697 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:20:54,697 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 06:20:54,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:54,698 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 06:20:54,733 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 06:20:56,015 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2023-12-25 06:20:56,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:56,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-25 06:20:56,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 76357 backedges. 1530 proven. 4371 refuted. 0 times theorem prover too weak. 70456 trivial. 0 not checked. [2023-12-25 06:20:56,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 76357 backedges. 1530 proven. 4427 refuted. 0 times theorem prover too weak. 70400 trivial. 0 not checked. [2023-12-25 06:20:59,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:59,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633851317] [2023-12-25 06:20:59,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633851317] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:59,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:59,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23] total 26 [2023-12-25 06:20:59,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788295752] [2023-12-25 06:20:59,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:59,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 06:20:59,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:59,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 06:20:59,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2023-12-25 06:20:59,829 INFO L87 Difference]: Start difference. First operand 180 states and 298 transitions. Second operand has 26 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 22 states have call successors, (27), 1 states have call predecessors, (27), 11 states have return successors, (34), 13 states have call predecessors, (34), 22 states have call successors, (34) [2023-12-25 06:21:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:00,343 INFO L93 Difference]: Finished difference Result 420 states and 997 transitions. [2023-12-25 06:21:00,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 06:21:00,344 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 22 states have call successors, (27), 1 states have call predecessors, (27), 11 states have return successors, (34), 13 states have call predecessors, (34), 22 states have call successors, (34) Word has length 1511 [2023-12-25 06:21:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:00,347 INFO L225 Difference]: With dead ends: 420 [2023-12-25 06:21:00,347 INFO L226 Difference]: Without dead ends: 242 [2023-12-25 06:21:00,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3030 GetRequests, 2996 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 06:21:00,349 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 18 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:00,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 543 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:21:00,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-25 06:21:00,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 228. [2023-12-25 06:21:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 139 states have (on average 1.0575539568345325) internal successors, (147), 136 states have internal predecessors, (147), 47 states have call successors, (47), 20 states have call predecessors, (47), 41 states have return successors, (258), 71 states have call predecessors, (258), 47 states have call successors, (258) [2023-12-25 06:21:00,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 452 transitions. [2023-12-25 06:21:00,369 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 452 transitions. Word has length 1511 [2023-12-25 06:21:00,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:00,369 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 452 transitions. [2023-12-25 06:21:00,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 22 states have call successors, (27), 1 states have call predecessors, (27), 11 states have return successors, (34), 13 states have call predecessors, (34), 22 states have call successors, (34) [2023-12-25 06:21:00,369 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 452 transitions. [2023-12-25 06:21:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2610 [2023-12-25 06:21:00,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:00,408 INFO L195 NwaCegarLoop]: trace histogram [208, 208, 205, 205, 168, 166, 104, 104, 104, 104, 104, 104, 102, 102, 102, 102, 102, 102, 66, 62, 40, 39, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:00,420 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 06:21:00,617 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 06:21:00,618 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:00,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:00,618 INFO L85 PathProgramCache]: Analyzing trace with hash 357793490, now seen corresponding path program 13 times [2023-12-25 06:21:00,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:00,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521675213] [2023-12-25 06:21:00,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:21:00,620 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 06:21:00,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:00,624 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 06:21:00,625 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 06:21:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:21:01,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 3654 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 06:21:01,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 228996 backedges. 1729 proven. 9703 refuted. 0 times theorem prover too weak. 217564 trivial. 0 not checked. [2023-12-25 06:21:01,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 228996 backedges. 1729 proven. 9773 refuted. 0 times theorem prover too weak. 217494 trivial. 0 not checked. [2023-12-25 06:21:08,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521675213] [2023-12-25 06:21:08,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521675213] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:08,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:08,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25] total 28 [2023-12-25 06:21:08,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257200555] [2023-12-25 06:21:08,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:08,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 06:21:08,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 06:21:08,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2023-12-25 06:21:08,402 INFO L87 Difference]: Start difference. First operand 228 states and 452 transitions. Second operand has 28 states, 26 states have (on average 3.076923076923077) internal successors, (80), 28 states have internal predecessors, (80), 25 states have call successors, (28), 1 states have call predecessors, (28), 12 states have return successors, (36), 12 states have call predecessors, (36), 25 states have call successors, (36) [2023-12-25 06:21:09,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:09,023 INFO L93 Difference]: Finished difference Result 488 states and 1305 transitions. [2023-12-25 06:21:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:21:09,024 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.076923076923077) internal successors, (80), 28 states have internal predecessors, (80), 25 states have call successors, (28), 1 states have call predecessors, (28), 12 states have return successors, (36), 12 states have call predecessors, (36), 25 states have call successors, (36) Word has length 2609 [2023-12-25 06:21:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:09,029 INFO L225 Difference]: With dead ends: 488 [2023-12-25 06:21:09,029 INFO L226 Difference]: Without dead ends: 262 [2023-12-25 06:21:09,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5227 GetRequests, 5190 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=1301, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 06:21:09,032 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 37 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:09,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 678 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:21:09,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-25 06:21:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 255. [2023-12-25 06:21:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 153 states have (on average 1.0522875816993464) internal successors, (161), 150 states have internal predecessors, (161), 53 states have call successors, (53), 20 states have call predecessors, (53), 48 states have return successors, (327), 84 states have call predecessors, (327), 53 states have call successors, (327) [2023-12-25 06:21:09,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 541 transitions. [2023-12-25 06:21:09,056 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 541 transitions. Word has length 2609 [2023-12-25 06:21:09,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:09,058 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 541 transitions. [2023-12-25 06:21:09,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.076923076923077) internal successors, (80), 28 states have internal predecessors, (80), 25 states have call successors, (28), 1 states have call predecessors, (28), 12 states have return successors, (36), 12 states have call predecessors, (36), 25 states have call successors, (36) [2023-12-25 06:21:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 541 transitions. [2023-12-25 06:21:09,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2900 [2023-12-25 06:21:09,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:09,163 INFO L195 NwaCegarLoop]: trace histogram [231, 231, 228, 228, 188, 183, 115, 115, 115, 115, 115, 115, 114, 114, 114, 114, 114, 114, 73, 69, 48, 40, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:09,215 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 06:21:09,388 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 06:21:09,388 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:09,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:09,389 INFO L85 PathProgramCache]: Analyzing trace with hash 205888795, now seen corresponding path program 14 times [2023-12-25 06:21:09,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:09,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798018963] [2023-12-25 06:21:09,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:21:09,391 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 06:21:09,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:09,413 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 06:21:09,448 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 06:21:10,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:21:10,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:10,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 4059 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-25 06:21:10,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 282991 backedges. 1934 proven. 13128 refuted. 0 times theorem prover too weak. 267929 trivial. 0 not checked. [2023-12-25 06:21:10,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 282991 backedges. 1934 proven. 13230 refuted. 0 times theorem prover too weak. 267827 trivial. 0 not checked. [2023-12-25 06:21:18,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:18,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798018963] [2023-12-25 06:21:18,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798018963] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:18,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:18,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29] total 32 [2023-12-25 06:21:18,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267178601] [2023-12-25 06:21:18,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:18,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-25 06:21:18,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:18,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-25 06:21:18,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2023-12-25 06:21:18,707 INFO L87 Difference]: Start difference. First operand 255 states and 541 transitions. Second operand has 32 states, 30 states have (on average 3.0) internal successors, (90), 32 states have internal predecessors, (90), 29 states have call successors, (32), 1 states have call predecessors, (32), 14 states have return successors, (42), 14 states have call predecessors, (42), 29 states have call successors, (42) [2023-12-25 06:21:19,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:19,406 INFO L93 Difference]: Finished difference Result 542 states and 1589 transitions. [2023-12-25 06:21:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 06:21:19,407 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 3.0) internal successors, (90), 32 states have internal predecessors, (90), 29 states have call successors, (32), 1 states have call predecessors, (32), 14 states have return successors, (42), 14 states have call predecessors, (42), 29 states have call successors, (42) Word has length 2899 [2023-12-25 06:21:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:19,415 INFO L225 Difference]: With dead ends: 542 [2023-12-25 06:21:19,415 INFO L226 Difference]: Without dead ends: 289 [2023-12-25 06:21:19,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5809 GetRequests, 5766 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=225, Invalid=1755, Unknown=0, NotChecked=0, Total=1980 [2023-12-25 06:21:19,419 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 26 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:19,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 776 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:21:19,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-12-25 06:21:19,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 282. [2023-12-25 06:21:19,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 167 states have (on average 1.0479041916167664) internal successors, (175), 164 states have internal predecessors, (175), 59 states have call successors, (59), 20 states have call predecessors, (59), 55 states have return successors, (396), 97 states have call predecessors, (396), 59 states have call successors, (396) [2023-12-25 06:21:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 630 transitions. [2023-12-25 06:21:19,452 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 630 transitions. Word has length 2899 [2023-12-25 06:21:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:19,453 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 630 transitions. [2023-12-25 06:21:19,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 3.0) internal successors, (90), 32 states have internal predecessors, (90), 29 states have call successors, (32), 1 states have call predecessors, (32), 14 states have return successors, (42), 14 states have call predecessors, (42), 29 states have call successors, (42) [2023-12-25 06:21:19,454 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 630 transitions. [2023-12-25 06:21:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2206 [2023-12-25 06:21:19,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:19,482 INFO L195 NwaCegarLoop]: trace histogram [176, 176, 173, 173, 144, 138, 88, 88, 88, 88, 88, 88, 86, 86, 86, 86, 86, 86, 58, 50, 35, 32, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:19,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-25 06:21:19,704 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 06:21:19,704 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:19,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:19,705 INFO L85 PathProgramCache]: Analyzing trace with hash -214834826, now seen corresponding path program 15 times [2023-12-25 06:21:19,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:19,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132365308] [2023-12-25 06:21:19,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:21:19,706 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 06:21:19,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:19,707 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 06:21:19,721 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 06:21:20,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-12-25 06:21:20,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:20,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 06:21:20,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:20,411 INFO L134 CoverageAnalysis]: Checked inductivity of 163310 backedges. 7910 proven. 172 refuted. 0 times theorem prover too weak. 155228 trivial. 0 not checked. [2023-12-25 06:21:20,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 163310 backedges. 7916 proven. 194 refuted. 0 times theorem prover too weak. 155200 trivial. 0 not checked. [2023-12-25 06:21:23,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:23,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132365308] [2023-12-25 06:21:23,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132365308] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:23,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:23,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 19 [2023-12-25 06:21:23,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467614276] [2023-12-25 06:21:23,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:23,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 06:21:23,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:23,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 06:21:23,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:21:23,856 INFO L87 Difference]: Start difference. First operand 282 states and 630 transitions. Second operand has 19 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 12 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (28), 15 states have call predecessors, (28), 12 states have call successors, (28) [2023-12-25 06:21:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:24,163 INFO L93 Difference]: Finished difference Result 736 states and 2779 transitions. [2023-12-25 06:21:24,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:21:24,164 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 12 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (28), 15 states have call predecessors, (28), 12 states have call successors, (28) Word has length 2205 [2023-12-25 06:21:24,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:24,174 INFO L225 Difference]: With dead ends: 736 [2023-12-25 06:21:24,174 INFO L226 Difference]: Without dead ends: 455 [2023-12-25 06:21:24,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4417 GetRequests, 4391 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2023-12-25 06:21:24,183 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 56 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:24,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 259 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:21:24,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-12-25 06:21:24,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 386. [2023-12-25 06:21:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 222 states have (on average 1.027027027027027) internal successors, (228), 219 states have internal predecessors, (228), 82 states have call successors, (82), 21 states have call predecessors, (82), 81 states have return successors, (956), 145 states have call predecessors, (956), 82 states have call successors, (956) [2023-12-25 06:21:24,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1266 transitions. [2023-12-25 06:21:24,373 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1266 transitions. Word has length 2205 [2023-12-25 06:21:24,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:24,373 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 1266 transitions. [2023-12-25 06:21:24,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 17 states have internal predecessors, (60), 12 states have call successors, (21), 1 states have call predecessors, (21), 9 states have return successors, (28), 15 states have call predecessors, (28), 12 states have call successors, (28) [2023-12-25 06:21:24,373 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1266 transitions. [2023-12-25 06:21:25,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10799 [2023-12-25 06:21:25,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:25,133 INFO L195 NwaCegarLoop]: trace histogram [858, 858, 853, 853, 698, 686, 429, 429, 429, 429, 429, 429, 426, 426, 426, 426, 426, 426, 272, 257, 167, 160, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:25,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-25 06:21:25,339 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 06:21:25,340 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:25,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:25,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1320594805, now seen corresponding path program 16 times [2023-12-25 06:21:25,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:25,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258778549] [2023-12-25 06:21:25,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:21:25,346 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 06:21:25,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:25,347 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 06:21:25,349 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 06:21:29,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:21:29,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:29,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 15088 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-25 06:21:29,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3949325 backedges. 5086 proven. 47767 refuted. 0 times theorem prover too weak. 3896472 trivial. 0 not checked. [2023-12-25 06:21:30,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3949325 backedges. 5086 proven. 47852 refuted. 0 times theorem prover too weak. 3896387 trivial. 0 not checked. [2023-12-25 06:21:48,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:48,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258778549] [2023-12-25 06:21:48,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258778549] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:48,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:48,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27] total 30 [2023-12-25 06:21:48,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25277661] [2023-12-25 06:21:48,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:48,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-25 06:21:48,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:48,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-25 06:21:48,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2023-12-25 06:21:48,534 INFO L87 Difference]: Start difference. First operand 386 states and 1266 transitions. Second operand has 30 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 30 states have internal predecessors, (85), 27 states have call successors, (30), 1 states have call predecessors, (30), 13 states have return successors, (39), 13 states have call predecessors, (39), 27 states have call successors, (39) [2023-12-25 06:21:49,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:49,093 INFO L93 Difference]: Finished difference Result 804 states and 4040 transitions. [2023-12-25 06:21:49,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:21:49,094 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 30 states have internal predecessors, (85), 27 states have call successors, (30), 1 states have call predecessors, (30), 13 states have return successors, (39), 13 states have call predecessors, (39), 27 states have call successors, (39) Word has length 10798 [2023-12-25 06:21:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:49,112 INFO L225 Difference]: With dead ends: 804 [2023-12-25 06:21:49,112 INFO L226 Difference]: Without dead ends: 420 [2023-12-25 06:21:49,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21606 GetRequests, 21566 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=202, Invalid=1520, Unknown=0, NotChecked=0, Total=1722 [2023-12-25 06:21:49,121 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 28 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:49,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 740 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:21:49,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-12-25 06:21:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 406. [2023-12-25 06:21:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 232 states have (on average 1.0258620689655173) internal successors, (238), 229 states have internal predecessors, (238), 87 states have call successors, (87), 21 states have call predecessors, (87), 86 states have return successors, (1216), 155 states have call predecessors, (1216), 87 states have call successors, (1216) [2023-12-25 06:21:49,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1541 transitions. [2023-12-25 06:21:49,198 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 1541 transitions. Word has length 10798 [2023-12-25 06:21:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:49,202 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 1541 transitions. [2023-12-25 06:21:49,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 30 states have internal predecessors, (85), 27 states have call successors, (30), 1 states have call predecessors, (30), 13 states have return successors, (39), 13 states have call predecessors, (39), 27 states have call successors, (39) [2023-12-25 06:21:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 1541 transitions. [2023-12-25 06:21:49,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4755 [2023-12-25 06:21:49,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:49,455 INFO L195 NwaCegarLoop]: trace histogram [378, 378, 375, 375, 306, 303, 189, 189, 189, 189, 189, 189, 187, 187, 187, 187, 187, 187, 119, 114, 72, 72, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:49,567 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 06:21:49,680 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 06:21:49,680 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:49,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:49,682 INFO L85 PathProgramCache]: Analyzing trace with hash 534302386, now seen corresponding path program 17 times [2023-12-25 06:21:49,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:49,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627044426] [2023-12-25 06:21:49,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:21:49,684 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 06:21:49,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:49,685 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 06:21:49,706 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 06:21:50,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-12-25 06:21:50,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:50,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 06:21:50,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 763401 backedges. 159113 proven. 89 refuted. 0 times theorem prover too weak. 604199 trivial. 0 not checked. [2023-12-25 06:21:50,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:22:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 763401 backedges. 7595 proven. 16149 refuted. 0 times theorem prover too weak. 739657 trivial. 0 not checked. [2023-12-25 06:22:01,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:22:01,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627044426] [2023-12-25 06:22:01,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627044426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:22:01,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:22:01,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 17 [2023-12-25 06:22:01,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989291865] [2023-12-25 06:22:01,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:22:01,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-25 06:22:01,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:22:01,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-25 06:22:01,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-25 06:22:01,797 INFO L87 Difference]: Start difference. First operand 406 states and 1541 transitions. Second operand has 17 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 14 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) [2023-12-25 06:22:02,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:22:02,020 INFO L93 Difference]: Finished difference Result 839 states and 4445 transitions. [2023-12-25 06:22:02,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 06:22:02,033 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 14 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) Word has length 4754 [2023-12-25 06:22:02,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:22:02,054 INFO L225 Difference]: With dead ends: 839 [2023-12-25 06:22:02,054 INFO L226 Difference]: Without dead ends: 431 [2023-12-25 06:22:02,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9514 GetRequests, 9491 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:22:02,061 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 44 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:22:02,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 207 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:22:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2023-12-25 06:22:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 387. [2023-12-25 06:22:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 222 states have (on average 1.0225225225225225) internal successors, (227), 219 states have internal predecessors, (227), 83 states have call successors, (83), 21 states have call predecessors, (83), 81 states have return successors, (1201), 146 states have call predecessors, (1201), 83 states have call successors, (1201) [2023-12-25 06:22:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1511 transitions. [2023-12-25 06:22:02,132 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1511 transitions. Word has length 4754 [2023-12-25 06:22:02,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:22:02,133 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 1511 transitions. [2023-12-25 06:22:02,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 14 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (32), 11 states have call predecessors, (32), 14 states have call successors, (32) [2023-12-25 06:22:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1511 transitions. [2023-12-25 06:22:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14395 [2023-12-25 06:22:03,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:22:03,339 INFO L195 NwaCegarLoop]: trace histogram [1154, 1154, 1127, 1127, 924, 921, 577, 577, 577, 577, 577, 577, 563, 563, 563, 563, 563, 563, 361, 344, 230, 206, 1, 1, 1, 1, 1, 1] [2023-12-25 06:22:03,343 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 (31)] Forceful destruction successful, exit code 0 [2023-12-25 06:22:03,543 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 06:22:03,543 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:22:03,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:22:03,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1878416240, now seen corresponding path program 18 times [2023-12-25 06:22:03,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:22:03,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597590100] [2023-12-25 06:22:03,552 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:22:03,552 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 06:22:03,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:22:03,554 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 06:22:03,555 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 06:22:07,288 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 66 check-sat command(s) [2023-12-25 06:22:07,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:22:07,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-25 06:22:07,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:22:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7022351 backedges. 13333 proven. 70934 refuted. 0 times theorem prover too weak. 6938084 trivial. 0 not checked. [2023-12-25 06:22:08,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:22:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 7022351 backedges. 13313 proven. 71051 refuted. 0 times theorem prover too weak. 6937987 trivial. 0 not checked. [2023-12-25 06:22:42,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:22:42,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597590100] [2023-12-25 06:22:42,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597590100] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:22:42,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:22:42,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 33] total 38 [2023-12-25 06:22:42,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57747395] [2023-12-25 06:22:42,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:22:42,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-25 06:22:42,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:22:42,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-25 06:22:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1262, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 06:22:42,509 INFO L87 Difference]: Start difference. First operand 387 states and 1511 transitions. Second operand has 38 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 38 states have internal predecessors, (100), 33 states have call successors, (39), 1 states have call predecessors, (39), 15 states have return successors, (48), 18 states have call predecessors, (48), 33 states have call successors, (48) [2023-12-25 06:22:48,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:22:48,729 INFO L93 Difference]: Finished difference Result 1464 states and 20525 transitions. [2023-12-25 06:22:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-25 06:22:48,730 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 38 states have internal predecessors, (100), 33 states have call successors, (39), 1 states have call predecessors, (39), 15 states have return successors, (48), 18 states have call predecessors, (48), 33 states have call successors, (48) Word has length 14394 [2023-12-25 06:22:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:22:48,930 INFO L225 Difference]: With dead ends: 1464 [2023-12-25 06:22:48,930 INFO L226 Difference]: Without dead ends: 1049 [2023-12-25 06:22:48,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28827 GetRequests, 28750 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=967, Invalid=5195, Unknown=0, NotChecked=0, Total=6162 [2023-12-25 06:22:48,957 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 142 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:22:48,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1143 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-25 06:22:48,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2023-12-25 06:22:49,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1009. [2023-12-25 06:22:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 585 states have (on average 1.011965811965812) internal successors, (592), 578 states have internal predecessors, (592), 198 states have call successors, (198), 46 states have call predecessors, (198), 225 states have return successors, (10049), 384 states have call predecessors, (10049), 198 states have call successors, (10049) [2023-12-25 06:22:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 10839 transitions. [2023-12-25 06:22:49,919 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 10839 transitions. Word has length 14394 [2023-12-25 06:22:49,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:22:49,921 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 10839 transitions. [2023-12-25 06:22:49,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 38 states have internal predecessors, (100), 33 states have call successors, (39), 1 states have call predecessors, (39), 15 states have return successors, (48), 18 states have call predecessors, (48), 33 states have call successors, (48) [2023-12-25 06:22:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 10839 transitions. [2023-12-25 06:22:58,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39884 [2023-12-25 06:22:58,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:22:58,802 INFO L195 NwaCegarLoop]: trace histogram [3194, 3194, 3127, 3127, 2568, 2546, 1597, 1597, 1597, 1597, 1597, 1597, 1563, 1563, 1563, 1563, 1563, 1563, 1005, 949, 626, 581, 1, 1, 1, 1, 1, 1] [2023-12-25 06:22:58,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-25 06:22:59,004 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 06:22:59,004 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:22:59,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:22:59,008 INFO L85 PathProgramCache]: Analyzing trace with hash 206328985, now seen corresponding path program 19 times [2023-12-25 06:22:59,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:22:59,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911722609] [2023-12-25 06:22:59,025 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:22:59,025 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 06:22:59,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:22:59,026 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 06:22:59,027 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 06:23:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:23:13,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 55698 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 06:23:13,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:23:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 53968028 backedges. 24509 proven. 205210 refuted. 0 times theorem prover too weak. 53738309 trivial. 0 not checked. [2023-12-25 06:23:16,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:25:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 53968028 backedges. 24509 proven. 205330 refuted. 0 times theorem prover too weak. 53738189 trivial. 0 not checked. [2023-12-25 06:25:25,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:25:25,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911722609] [2023-12-25 06:25:25,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911722609] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:25:25,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:25:25,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 31] total 34 [2023-12-25 06:25:25,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310343089] [2023-12-25 06:25:25,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:25:25,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-25 06:25:25,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:25:25,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-25 06:25:25,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1028, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 06:25:25,724 INFO L87 Difference]: Start difference. First operand 1009 states and 10839 transitions. Second operand has 34 states, 32 states have (on average 2.96875) internal successors, (95), 34 states have internal predecessors, (95), 31 states have call successors, (34), 1 states have call predecessors, (34), 15 states have return successors, (45), 15 states have call predecessors, (45), 31 states have call successors, (45) [2023-12-25 06:25:27,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:25:27,029 INFO L93 Difference]: Finished difference Result 2098 states and 37353 transitions. [2023-12-25 06:25:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:25:27,030 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.96875) internal successors, (95), 34 states have internal predecessors, (95), 31 states have call successors, (34), 1 states have call predecessors, (34), 15 states have return successors, (45), 15 states have call predecessors, (45), 31 states have call successors, (45) Word has length 39883 [2023-12-25 06:25:27,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:25:27,236 INFO L225 Difference]: With dead ends: 2098 [2023-12-25 06:25:27,237 INFO L226 Difference]: Without dead ends: 1099 [2023-12-25 06:25:27,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79778 GetRequests, 79732 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=2008, Unknown=0, NotChecked=0, Total=2256 [2023-12-25 06:25:27,294 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 41 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:25:27,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1009 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:25:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2023-12-25 06:25:28,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1088. [2023-12-25 06:25:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 627 states have (on average 1.0111642743221692) internal successors, (634), 620 states have internal predecessors, (634), 214 states have call successors, (214), 46 states have call predecessors, (214), 246 states have return successors, (12717), 421 states have call predecessors, (12717), 214 states have call successors, (12717) [2023-12-25 06:25:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 13565 transitions. [2023-12-25 06:25:28,366 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 13565 transitions. Word has length 39883 [2023-12-25 06:25:28,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:25:28,370 INFO L495 AbstractCegarLoop]: Abstraction has 1088 states and 13565 transitions. [2023-12-25 06:25:28,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.96875) internal successors, (95), 34 states have internal predecessors, (95), 31 states have call successors, (34), 1 states have call predecessors, (34), 15 states have return successors, (45), 15 states have call predecessors, (45), 31 states have call successors, (45) [2023-12-25 06:25:28,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 13565 transitions. [2023-12-25 06:26:25,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100816 [2023-12-25 06:26:25,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:26:26,002 INFO L195 NwaCegarLoop]: trace histogram [8104, 8104, 7875, 7875, 6476, 6451, 4052, 4052, 4052, 4052, 4052, 4052, 3937, 3937, 3937, 3937, 3937, 3937, 2539, 2399, 1628, 1424, 1, 1, 1, 1, 1, 1] [2023-12-25 06:26:26,215 WARN L435 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)] Forcibly destroying the process [2023-12-25 06:26:26,386 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 137 [2023-12-25 06:26:26,387 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 06:26:26,387 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:26:26,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:26:26,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1168908799, now seen corresponding path program 20 times [2023-12-25 06:26:26,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:26:26,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109139062] [2023-12-25 06:26:26,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:26:26,495 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 06:26:26,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:26:26,516 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 06:26:26,520 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