/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_20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:20:35,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:20:35,816 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 06:20:35,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:20:35,819 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:20:35,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:20:35,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:20:35,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:20:35,849 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:20:35,852 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:20:35,852 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:20:35,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:20:35,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:20:35,853 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:20:35,853 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:20:35,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:20:35,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:20:35,854 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:20:35,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:20:35,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:20:35,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:20:35,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:20:35,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:20:35,855 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:20:35,855 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:20:35,856 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:20:35,856 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:20:35,856 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:20:35,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:20:35,856 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:20:35,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:20:35,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:20:35,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:20:35,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:20:35,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:20:35,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:20:35,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:20:35,858 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:20:35,858 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:20:35,858 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:20:35,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:20:35,859 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:20:35,859 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:20:35,859 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:20:35,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:20:35,859 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:20:35,859 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:20:36,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:20:36,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:20:36,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:20:36,061 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:20:36,062 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:20:36,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_20-1.c [2023-12-25 06:20:37,186 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:20:37,390 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:20:37,390 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_20-1.c [2023-12-25 06:20:37,397 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/333f14ca1/b013a8a751c24bad808b23ccc61f56e6/FLAG31efd3f3a [2023-12-25 06:20:37,414 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/333f14ca1/b013a8a751c24bad808b23ccc61f56e6 [2023-12-25 06:20:37,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:20:37,418 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:20:37,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:20:37,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:20:37,425 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:20:37,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619015f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37, skipping insertion in model container [2023-12-25 06:20:37,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,445 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:20:37,613 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_20-1.c[951,964] [2023-12-25 06:20:37,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:20:37,629 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:20:37,646 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_20-1.c[951,964] [2023-12-25 06:20:37,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:20:37,662 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:20:37,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37 WrapperNode [2023-12-25 06:20:37,663 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:20:37,664 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:20:37,664 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:20:37,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:20:37,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,696 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-12-25 06:20:37,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:20:37,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:20:37,697 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:20:37,697 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:20:37,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,708 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,718 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 06:20:37,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,724 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:20:37,728 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:20:37,728 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:20:37,728 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:20:37,729 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37" (1/1) ... [2023-12-25 06:20:37,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:20:37,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:20:37,755 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 06:20:37,770 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 06:20:37,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:20:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:20:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-12-25 06:20:37,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-12-25 06:20:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-12-25 06:20:37,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-12-25 06:20:37,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:20:37,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:20:37,823 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:20:37,825 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:20:37,955 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:20:37,977 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:20:37,977 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:20:37,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:20:37 BoogieIcfgContainer [2023-12-25 06:20:37,978 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:20:37,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:20:37,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:20:37,982 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:20:37,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:20:37" (1/3) ... [2023-12-25 06:20:37,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@601f65fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:20:37, skipping insertion in model container [2023-12-25 06:20:37,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:37" (2/3) ... [2023-12-25 06:20:37,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@601f65fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:20:37, skipping insertion in model container [2023-12-25 06:20:37,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:20:37" (3/3) ... [2023-12-25 06:20:37,984 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-1.c [2023-12-25 06:20:37,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:20:37,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:20:38,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:20:38,058 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;@4eeed9ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:20:38,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:20:38,065 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 06:20:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-25 06:20:38,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:38,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:38,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:38,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:38,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1178273046, now seen corresponding path program 1 times [2023-12-25 06:20:38,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:38,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998496290] [2023-12-25 06:20:38,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:38,092 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 06:20:38,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:38,094 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 06:20:38,124 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 06:20:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:38,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:20:38,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 06:20:38,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:20:38,236 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:38,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998496290] [2023-12-25 06:20:38,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998496290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:20:38,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:20:38,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:20:38,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287046271] [2023-12-25 06:20:38,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:20:38,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:20:38,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:20:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:20:38,301 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 06:20:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:38,412 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2023-12-25 06:20:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:20:38,415 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 06:20:38,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:38,421 INFO L225 Difference]: With dead ends: 32 [2023-12-25 06:20:38,421 INFO L226 Difference]: Without dead ends: 24 [2023-12-25 06:20:38,423 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 06:20:38,426 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:38,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 66 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:20:38,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-25 06:20:38,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-25 06:20:38,460 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 06:20:38,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-25 06:20:38,474 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 9 [2023-12-25 06:20:38,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:38,475 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-25 06:20:38,475 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 06:20:38,475 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-25 06:20:38,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-25 06:20:38,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:38,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:38,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-25 06:20:38,681 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 06:20:38,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:38,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:38,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1422996679, now seen corresponding path program 1 times [2023-12-25 06:20:38,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:38,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279168304] [2023-12-25 06:20:38,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:38,684 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 06:20:38,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:38,693 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 06:20:38,699 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 06:20:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:38,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:20:38,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:38,812 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 06:20:38,812 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:20:38,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:38,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279168304] [2023-12-25 06:20:38,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279168304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:20:38,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:20:38,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:20:38,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257971358] [2023-12-25 06:20:38,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:20:38,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:20:38,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:38,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:20:38,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:20:38,815 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 06:20:38,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:38,936 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2023-12-25 06:20:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:20:38,938 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 06:20:38,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:38,938 INFO L225 Difference]: With dead ends: 30 [2023-12-25 06:20:38,939 INFO L226 Difference]: Without dead ends: 26 [2023-12-25 06:20:38,939 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 06:20:38,941 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 06:20:38,941 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 06:20:38,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-25 06:20:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-12-25 06:20:38,966 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 06:20:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-25 06:20:38,968 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 10 [2023-12-25 06:20:38,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:38,968 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-25 06:20:38,968 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 06:20:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-25 06:20:38,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-25 06:20:38,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:38,970 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 06:20:38,975 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 06:20:39,175 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 06:20:39,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:39,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:39,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1917903498, now seen corresponding path program 1 times [2023-12-25 06:20:39,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:39,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045986928] [2023-12-25 06:20:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:39,178 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 06:20:39,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:39,179 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 06:20:39,193 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 06:20:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:39,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:20:39,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:39,328 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 06:20:39,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:39,549 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 06:20:39,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:39,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045986928] [2023-12-25 06:20:39,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045986928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:39,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:39,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-25 06:20:39,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645604745] [2023-12-25 06:20:39,550 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:39,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 06:20:39,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:39,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 06:20:39,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:20:39,551 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 06:20:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:39,667 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2023-12-25 06:20:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:20:39,667 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 06:20:39,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:39,668 INFO L225 Difference]: With dead ends: 36 [2023-12-25 06:20:39,668 INFO L226 Difference]: Without dead ends: 32 [2023-12-25 06:20:39,669 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 06:20:39,670 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 06:20:39,670 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 06:20:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-25 06:20:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2023-12-25 06:20:39,675 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 06:20:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-12-25 06:20:39,676 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 21 [2023-12-25 06:20:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:39,676 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-12-25 06:20:39,676 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 06:20:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-12-25 06:20:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-25 06:20:39,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:39,677 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 06:20:39,679 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 06:20:39,879 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 06:20:39,880 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:39,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:39,880 INFO L85 PathProgramCache]: Analyzing trace with hash -773369340, now seen corresponding path program 1 times [2023-12-25 06:20:39,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:39,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249988238] [2023-12-25 06:20:39,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:39,881 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 06:20:39,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:39,882 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 06:20:39,884 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 06:20:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:39,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:20:39,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:39,945 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 06:20:39,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:40,059 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 06:20:40,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:40,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249988238] [2023-12-25 06:20:40,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249988238] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:40,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:40,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-25 06:20:40,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646344865] [2023-12-25 06:20:40,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:40,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 06:20:40,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:40,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 06:20:40,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:20:40,062 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 06:20:40,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:40,174 INFO L93 Difference]: Finished difference Result 60 states and 95 transitions. [2023-12-25 06:20:40,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:20:40,175 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 06:20:40,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:40,176 INFO L225 Difference]: With dead ends: 60 [2023-12-25 06:20:40,176 INFO L226 Difference]: Without dead ends: 34 [2023-12-25 06:20:40,177 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 06:20:40,177 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 06:20:40,178 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 06:20:40,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-25 06:20:40,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2023-12-25 06:20:40,183 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 06:20:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2023-12-25 06:20:40,184 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 22 [2023-12-25 06:20:40,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:40,184 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2023-12-25 06:20:40,184 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 06:20:40,184 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2023-12-25 06:20:40,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-25 06:20:40,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:40,186 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 06:20:40,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:40,388 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 06:20:40,388 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:40,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:40,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1000055446, now seen corresponding path program 1 times [2023-12-25 06:20:40,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:40,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913804630] [2023-12-25 06:20:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:40,389 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 06:20:40,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:40,390 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 06:20:40,398 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 06:20:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:40,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:20:40,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:40,564 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 06:20:40,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:40,878 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 06:20:40,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:40,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913804630] [2023-12-25 06:20:40,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913804630] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:40,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:40,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2023-12-25 06:20:40,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114151553] [2023-12-25 06:20:40,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:40,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 06:20:40,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:40,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 06:20:40,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:20:40,880 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 06:20:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:41,083 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2023-12-25 06:20:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:20:41,083 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 06:20:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:41,085 INFO L225 Difference]: With dead ends: 48 [2023-12-25 06:20:41,085 INFO L226 Difference]: Without dead ends: 44 [2023-12-25 06:20:41,085 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 06:20:41,086 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 06:20:41,086 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 06:20:41,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-25 06:20:41,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2023-12-25 06:20:41,093 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 06:20:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2023-12-25 06:20:41,094 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 53 transitions. Word has length 33 [2023-12-25 06:20:41,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:41,095 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 53 transitions. [2023-12-25 06:20:41,095 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 06:20:41,095 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2023-12-25 06:20:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-25 06:20:41,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:41,096 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 06:20:41,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:41,298 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 06:20:41,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:41,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:41,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1077323161, now seen corresponding path program 1 times [2023-12-25 06:20:41,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:41,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189641794] [2023-12-25 06:20:41,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:41,301 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 06:20:41,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:41,302 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 06:20:41,303 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 06:20:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:41,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:20:41,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:41,371 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 06:20:41,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:41,538 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 06:20:41,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:41,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189641794] [2023-12-25 06:20:41,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189641794] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:41,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:41,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2023-12-25 06:20:41,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038171344] [2023-12-25 06:20:41,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:41,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 06:20:41,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:41,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 06:20:41,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:20:41,540 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 06:20:41,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:41,695 INFO L93 Difference]: Finished difference Result 78 states and 149 transitions. [2023-12-25 06:20:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:20:41,695 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 06:20:41,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:41,700 INFO L225 Difference]: With dead ends: 78 [2023-12-25 06:20:41,700 INFO L226 Difference]: Without dead ends: 45 [2023-12-25 06:20:41,702 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 06:20:41,705 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 06:20:41,705 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 06:20:41,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-25 06:20:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-25 06:20:41,720 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 06:20:41,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 76 transitions. [2023-12-25 06:20:41,721 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 76 transitions. Word has length 34 [2023-12-25 06:20:41,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:41,721 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 76 transitions. [2023-12-25 06:20:41,721 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 06:20:41,721 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 76 transitions. [2023-12-25 06:20:41,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-25 06:20:41,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:41,723 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 06:20:41,729 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 06:20:41,923 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 06:20:41,926 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:41,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash -797673590, now seen corresponding path program 2 times [2023-12-25 06:20:41,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:41,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486322585] [2023-12-25 06:20:41,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:41,927 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 06:20:41,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:41,928 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 06:20:41,930 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 06:20:41,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:41,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:41,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:20:41,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:42,088 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 06:20:42,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:42,616 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 06:20:42,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:42,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486322585] [2023-12-25 06:20:42,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486322585] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:42,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:42,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2023-12-25 06:20:42,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969862651] [2023-12-25 06:20:42,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:42,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:20:42,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:42,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:20:42,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:20:42,618 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 06:20:42,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:42,942 INFO L93 Difference]: Finished difference Result 69 states and 141 transitions. [2023-12-25 06:20:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:20:42,943 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 06:20:42,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:42,944 INFO L225 Difference]: With dead ends: 69 [2023-12-25 06:20:42,944 INFO L226 Difference]: Without dead ends: 65 [2023-12-25 06:20:42,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:20:42,945 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 06:20:42,945 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 06:20:42,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-25 06:20:42,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2023-12-25 06:20:42,963 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 06:20:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 89 transitions. [2023-12-25 06:20:42,964 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 89 transitions. Word has length 45 [2023-12-25 06:20:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:42,965 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 89 transitions. [2023-12-25 06:20:42,965 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 06:20:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 89 transitions. [2023-12-25 06:20:42,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-25 06:20:42,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:42,966 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 06:20:42,972 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 06:20:43,172 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 06:20:43,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:43,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:43,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1078970546, now seen corresponding path program 1 times [2023-12-25 06:20:43,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:43,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125533282] [2023-12-25 06:20:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:43,174 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 06:20:43,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:43,175 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 06:20:43,192 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 06:20:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:43,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:20:43,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:43,269 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 06:20:43,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:43,541 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 06:20:43,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:43,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125533282] [2023-12-25 06:20:43,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125533282] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:43,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:43,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2023-12-25 06:20:43,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980447500] [2023-12-25 06:20:43,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:43,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:20:43,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:20:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:20:43,543 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 06:20:43,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:43,766 INFO L93 Difference]: Finished difference Result 107 states and 251 transitions. [2023-12-25 06:20:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:20:43,767 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 06:20:43,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:43,768 INFO L225 Difference]: With dead ends: 107 [2023-12-25 06:20:43,768 INFO L226 Difference]: Without dead ends: 60 [2023-12-25 06:20:43,769 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 06:20:43,769 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:43,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 181 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:20:43,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-25 06:20:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-25 06:20:43,793 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 06:20:43,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 119 transitions. [2023-12-25 06:20:43,794 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 119 transitions. Word has length 46 [2023-12-25 06:20:43,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:43,794 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 119 transitions. [2023-12-25 06:20:43,795 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 06:20:43,795 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 119 transitions. [2023-12-25 06:20:43,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-25 06:20:43,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:43,797 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 06:20:43,815 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 06:20:43,997 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 06:20:43,998 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:43,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:43,998 INFO L85 PathProgramCache]: Analyzing trace with hash 82175210, now seen corresponding path program 3 times [2023-12-25 06:20:43,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:43,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616342282] [2023-12-25 06:20:43,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:43,999 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 06:20:43,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:44,012 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 06:20:44,014 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 06:20:44,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-25 06:20:44,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:44,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:20:44,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:44,109 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 06:20:44,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:44,316 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 06:20:44,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:44,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616342282] [2023-12-25 06:20:44,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616342282] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:44,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:44,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-25 06:20:44,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911573949] [2023-12-25 06:20:44,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:44,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 06:20:44,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:44,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 06:20:44,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:20:44,318 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 06:20:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:44,439 INFO L93 Difference]: Finished difference Result 82 states and 162 transitions. [2023-12-25 06:20:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:20:44,439 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 06:20:44,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:44,440 INFO L225 Difference]: With dead ends: 82 [2023-12-25 06:20:44,440 INFO L226 Difference]: Without dead ends: 78 [2023-12-25 06:20:44,441 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 06:20:44,441 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 06:20:44,441 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 06:20:44,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-25 06:20:44,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2023-12-25 06:20:44,449 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 06:20:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 119 transitions. [2023-12-25 06:20:44,450 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 119 transitions. Word has length 57 [2023-12-25 06:20:44,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:44,451 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 119 transitions. [2023-12-25 06:20:44,451 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 06:20:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 119 transitions. [2023-12-25 06:20:44,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-25 06:20:44,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:44,468 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 06:20:44,488 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 06:20:44,670 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 06:20:44,670 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:44,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:44,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1783295408, now seen corresponding path program 2 times [2023-12-25 06:20:44,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:44,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247505181] [2023-12-25 06:20:44,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:44,671 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 06:20:44,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:44,681 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 06:20:44,709 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 06:20:44,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:44,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:44,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:20:44,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:44,845 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 06:20:44,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:45,463 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 06:20:45,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:45,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247505181] [2023-12-25 06:20:45,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247505181] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:45,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:45,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2023-12-25 06:20:45,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660775999] [2023-12-25 06:20:45,463 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:45,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 06:20:45,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:45,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 06:20:45,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:20:45,465 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 06:20:46,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:46,017 INFO L93 Difference]: Finished difference Result 162 states and 459 transitions. [2023-12-25 06:20:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:20:46,017 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 06:20:46,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:46,019 INFO L225 Difference]: With dead ends: 162 [2023-12-25 06:20:46,019 INFO L226 Difference]: Without dead ends: 104 [2023-12-25 06:20:46,020 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 06:20:46,020 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:46,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 161 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:20:46,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-25 06:20:46,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2023-12-25 06:20:46,032 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 06:20:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2023-12-25 06:20:46,034 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 58 [2023-12-25 06:20:46,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:46,034 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2023-12-25 06:20:46,034 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 06:20:46,034 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2023-12-25 06:20:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-25 06:20:46,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:46,036 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 06:20:46,054 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 06:20:46,257 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 06:20:46,258 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:46,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:46,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2115449141, now seen corresponding path program 2 times [2023-12-25 06:20:46,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:46,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106620519] [2023-12-25 06:20:46,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:46,259 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 06:20:46,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:46,279 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 06:20:46,309 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 06:20:46,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:46,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:46,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:20:46,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:46,430 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 06:20:46,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:46,823 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 06:20:46,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:46,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106620519] [2023-12-25 06:20:46,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106620519] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:46,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:46,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2023-12-25 06:20:46,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743644853] [2023-12-25 06:20:46,824 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:46,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 06:20:46,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 06:20:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:20:46,825 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 06:20:47,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:47,092 INFO L93 Difference]: Finished difference Result 208 states and 647 transitions. [2023-12-25 06:20:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:20:47,093 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 06:20:47,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:47,096 INFO L225 Difference]: With dead ends: 208 [2023-12-25 06:20:47,096 INFO L226 Difference]: Without dead ends: 112 [2023-12-25 06:20:47,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:20:47,098 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 29 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 06:20:47,098 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 06:20:47,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-25 06:20:47,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2023-12-25 06:20:47,112 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 06:20:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 275 transitions. [2023-12-25 06:20:47,114 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 275 transitions. Word has length 70 [2023-12-25 06:20:47,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:47,114 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 275 transitions. [2023-12-25 06:20:47,114 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 06:20:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 275 transitions. [2023-12-25 06:20:47,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-25 06:20:47,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:47,116 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 06:20:47,121 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 06:20:47,319 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 06:20:47,319 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:47,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:47,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1424247677, now seen corresponding path program 3 times [2023-12-25 06:20:47,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:47,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257619374] [2023-12-25 06:20:47,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:47,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:47,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:47,321 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 06:20:47,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-25 06:20:47,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:20:47,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:47,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 06:20:47,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:47,430 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 06:20:47,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:48,007 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 06:20:48,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:48,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257619374] [2023-12-25 06:20:48,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257619374] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:48,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:48,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-25 06:20:48,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514332585] [2023-12-25 06:20:48,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:48,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:20:48,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:48,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:20:48,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:20:48,009 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 06:20:48,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:48,272 INFO L93 Difference]: Finished difference Result 222 states and 707 transitions. [2023-12-25 06:20:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:20:48,273 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 06:20:48,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:48,275 INFO L225 Difference]: With dead ends: 222 [2023-12-25 06:20:48,275 INFO L226 Difference]: Without dead ends: 115 [2023-12-25 06:20:48,276 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 06:20:48,277 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 06:20:48,277 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 06:20:48,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-25 06:20:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-25 06:20:48,284 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 06:20:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 272 transitions. [2023-12-25 06:20:48,285 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 272 transitions. Word has length 142 [2023-12-25 06:20:48,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:48,285 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 272 transitions. [2023-12-25 06:20:48,286 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 06:20:48,286 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 272 transitions. [2023-12-25 06:20:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-25 06:20:48,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:48,287 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 06:20:48,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-25 06:20:48,490 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 06:20:48,490 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:48,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:48,491 INFO L85 PathProgramCache]: Analyzing trace with hash 705383518, now seen corresponding path program 3 times [2023-12-25 06:20:48,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:48,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626618314] [2023-12-25 06:20:48,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:48,491 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 06:20:48,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:48,492 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 06:20:48,538 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 06:20:48,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-25 06:20:48,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:48,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 06:20:48,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:48,589 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 06:20:48,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:20:48,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:48,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626618314] [2023-12-25 06:20:48,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626618314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:20:48,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:20:48,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 06:20:48,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894258509] [2023-12-25 06:20:48,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:20:48,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:20:48,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:48,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:20:48,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:20:48,591 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 06:20:48,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:48,644 INFO L93 Difference]: Finished difference Result 210 states and 572 transitions. [2023-12-25 06:20:48,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:20:48,655 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 06:20:48,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:48,656 INFO L225 Difference]: With dead ends: 210 [2023-12-25 06:20:48,656 INFO L226 Difference]: Without dead ends: 95 [2023-12-25 06:20:48,657 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 06:20:48,658 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 06:20:48,658 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 06:20:48,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-25 06:20:48,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-25 06:20:48,663 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 06:20:48,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 191 transitions. [2023-12-25 06:20:48,664 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 191 transitions. Word has length 94 [2023-12-25 06:20:48,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:48,665 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 191 transitions. [2023-12-25 06:20:48,665 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 06:20:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 191 transitions. [2023-12-25 06:20:48,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-25 06:20:48,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:48,666 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 06:20:48,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-25 06:20:48,868 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 06:20:48,869 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:48,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:48,869 INFO L85 PathProgramCache]: Analyzing trace with hash -187948887, now seen corresponding path program 1 times [2023-12-25 06:20:48,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:48,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525893740] [2023-12-25 06:20:48,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:48,870 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 06:20:48,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:48,871 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 06:20:48,873 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 06:20:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:48,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 06:20:48,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:49,054 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 06:20:49,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:49,591 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 06:20:49,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525893740] [2023-12-25 06:20:49,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525893740] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:49,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:49,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 18 [2023-12-25 06:20:49,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088797235] [2023-12-25 06:20:49,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:49,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-25 06:20:49,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:49,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-25 06:20:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-25 06:20:49,593 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 06:20:49,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:49,879 INFO L93 Difference]: Finished difference Result 199 states and 508 transitions. [2023-12-25 06:20:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:20:49,879 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 06:20:49,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:49,880 INFO L225 Difference]: With dead ends: 199 [2023-12-25 06:20:49,880 INFO L226 Difference]: Without dead ends: 106 [2023-12-25 06:20:49,881 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 06:20:49,882 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 06:20:49,882 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 06:20:49,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-25 06:20:49,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-25 06:20:49,888 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 06:20:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 228 transitions. [2023-12-25 06:20:49,889 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 228 transitions. Word has length 120 [2023-12-25 06:20:49,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:49,889 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 228 transitions. [2023-12-25 06:20:49,890 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 06:20:49,890 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 228 transitions. [2023-12-25 06:20:49,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-12-25 06:20:49,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:49,893 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 06:20:49,896 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 06:20:50,096 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 06:20:50,097 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:50,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:50,097 INFO L85 PathProgramCache]: Analyzing trace with hash -273803883, now seen corresponding path program 2 times [2023-12-25 06:20:50,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:50,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025460409] [2023-12-25 06:20:50,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:50,098 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 06:20:50,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:50,099 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 06:20:50,101 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 06:20:50,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:50,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:50,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:20:50,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:50,440 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 06:20:50,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:51,907 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 06:20:51,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:51,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025460409] [2023-12-25 06:20:51,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025460409] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:51,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:51,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 20 [2023-12-25 06:20:51,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259217931] [2023-12-25 06:20:51,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:51,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 06:20:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:51,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 06:20:51,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:20:51,910 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 06:20:53,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:53,044 INFO L93 Difference]: Finished difference Result 290 states and 861 transitions. [2023-12-25 06:20:53,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-25 06:20:53,044 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 06:20:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:53,047 INFO L225 Difference]: With dead ends: 290 [2023-12-25 06:20:53,047 INFO L226 Difference]: Without dead ends: 184 [2023-12-25 06:20:53,049 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 06:20:53,049 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 122 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:53,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 158 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:20:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-25 06:20:53,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 177. [2023-12-25 06:20:53,061 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 06:20:53,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 425 transitions. [2023-12-25 06:20:53,063 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 425 transitions. Word has length 368 [2023-12-25 06:20:53,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:53,064 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 425 transitions. [2023-12-25 06:20:53,064 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 06:20:53,064 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 425 transitions. [2023-12-25 06:20:53,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-25 06:20:53,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:53,071 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 06:20:53,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-25 06:20:53,276 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 06:20:53,276 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:53,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:53,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1573896179, now seen corresponding path program 3 times [2023-12-25 06:20:53,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:53,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608302173] [2023-12-25 06:20:53,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:53,278 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 06:20:53,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:53,279 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 06:20:53,306 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 06:20:53,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-25 06:20:53,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:53,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 06:20:53,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:53,459 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 06:20:53,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:55,044 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 06:20:55,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:55,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608302173] [2023-12-25 06:20:55,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608302173] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:55,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:55,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 16 [2023-12-25 06:20:55,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172763135] [2023-12-25 06:20:55,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:55,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 06:20:55,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:55,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 06:20:55,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:20:55,046 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 06:20:55,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:55,457 INFO L93 Difference]: Finished difference Result 357 states and 1061 transitions. [2023-12-25 06:20:55,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 06:20:55,458 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 06:20:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:55,463 INFO L225 Difference]: With dead ends: 357 [2023-12-25 06:20:55,463 INFO L226 Difference]: Without dead ends: 180 [2023-12-25 06:20:55,466 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 06:20:55,466 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:55,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 236 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:20:55,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-25 06:20:55,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 172. [2023-12-25 06:20:55,480 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 06:20:55,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 386 transitions. [2023-12-25 06:20:55,483 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 386 transitions. Word has length 583 [2023-12-25 06:20:55,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:55,483 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 386 transitions. [2023-12-25 06:20:55,483 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 06:20:55,483 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 386 transitions. [2023-12-25 06:20:55,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-25 06:20:55,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:55,487 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 06:20:55,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:55,690 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 06:20:55,691 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:55,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:55,691 INFO L85 PathProgramCache]: Analyzing trace with hash -772663922, now seen corresponding path program 4 times [2023-12-25 06:20:55,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:55,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254081534] [2023-12-25 06:20:55,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:20:55,693 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 06:20:55,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:55,694 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 06:20:55,694 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 06:20:55,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:20:55,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:55,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:20:55,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:55,989 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 06:20:55,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:56,815 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 06:20:56,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:56,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254081534] [2023-12-25 06:20:56,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254081534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:56,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:56,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 20 [2023-12-25 06:20:56,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164985780] [2023-12-25 06:20:56,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:56,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 06:20:56,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:56,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 06:20:56,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:20:56,818 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 06:20:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:57,069 INFO L93 Difference]: Finished difference Result 364 states and 1111 transitions. [2023-12-25 06:20:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 06:20:57,069 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 06:20:57,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:57,072 INFO L225 Difference]: With dead ends: 364 [2023-12-25 06:20:57,072 INFO L226 Difference]: Without dead ends: 194 [2023-12-25 06:20:57,073 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 06:20:57,074 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 23 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 06:20:57,074 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 06:20:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-25 06:20:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-12-25 06:20:57,119 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 06:20:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 484 transitions. [2023-12-25 06:20:57,121 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 484 transitions. Word has length 358 [2023-12-25 06:20:57,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:57,123 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 484 transitions. [2023-12-25 06:20:57,123 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 06:20:57,123 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 484 transitions. [2023-12-25 06:20:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-12-25 06:20:57,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:57,126 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 06:20:57,146 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 06:20:57,331 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 06:20:57,332 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:57,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:57,332 INFO L85 PathProgramCache]: Analyzing trace with hash 992752231, now seen corresponding path program 5 times [2023-12-25 06:20:57,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:57,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199359061] [2023-12-25 06:20:57,332 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:20:57,333 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 06:20:57,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:57,334 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 06:20:57,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 06:20:57,399 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-25 06:20:57,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:57,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:20:57,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:57,459 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 06:20:57,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:58,157 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 06:20:58,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:58,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199359061] [2023-12-25 06:20:58,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199359061] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:58,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:58,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2023-12-25 06:20:58,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868452719] [2023-12-25 06:20:58,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:58,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 06:20:58,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:58,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 06:20:58,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-25 06:20:58,159 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 06:20:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:58,370 INFO L93 Difference]: Finished difference Result 544 states and 2463 transitions. [2023-12-25 06:20:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:20:58,371 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 06:20:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:58,379 INFO L225 Difference]: With dead ends: 544 [2023-12-25 06:20:58,379 INFO L226 Difference]: Without dead ends: 352 [2023-12-25 06:20:58,384 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 06:20:58,384 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 06:20:58,385 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 06:20:58,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-25 06:20:58,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 318. [2023-12-25 06:20:58,455 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 06:20:58,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 1256 transitions. [2023-12-25 06:20:58,460 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 1256 transitions. Word has length 288 [2023-12-25 06:20:58,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:58,461 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 1256 transitions. [2023-12-25 06:20:58,461 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 06:20:58,461 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 1256 transitions. [2023-12-25 06:20:58,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2023-12-25 06:20:58,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:58,478 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 06:20:58,491 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 06:20:58,681 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 06:20:58,681 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:58,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1719554341, now seen corresponding path program 6 times [2023-12-25 06:20:58,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:58,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79358924] [2023-12-25 06:20:58,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:20:58,683 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 06:20:58,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:58,684 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 06:20:58,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 06:20:58,817 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-25 06:20:58,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:58,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 06:20:58,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:58,923 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 06:20:58,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:00,832 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 06:21:00,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:00,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79358924] [2023-12-25 06:21:00,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79358924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:00,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:00,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-25 06:21:00,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809966778] [2023-12-25 06:21:00,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:00,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:21:00,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:00,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:21:00,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:21:00,837 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 06:21:01,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:01,115 INFO L93 Difference]: Finished difference Result 756 states and 3988 transitions. [2023-12-25 06:21:01,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 06:21:01,116 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 06:21:01,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:01,124 INFO L225 Difference]: With dead ends: 756 [2023-12-25 06:21:01,124 INFO L226 Difference]: Without dead ends: 439 [2023-12-25 06:21:01,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1885 GetRequests, 1866 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:21:01,138 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 06:21:01,138 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 06:21:01,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-12-25 06:21:01,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 319. [2023-12-25 06:21:01,225 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 06:21:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 1316 transitions. [2023-12-25 06:21:01,230 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 1316 transitions. Word has length 940 [2023-12-25 06:21:01,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:01,231 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 1316 transitions. [2023-12-25 06:21:01,231 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 06:21:01,231 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 1316 transitions. [2023-12-25 06:21:01,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1453 [2023-12-25 06:21:01,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:01,248 INFO L195 NwaCegarLoop]: trace histogram [143, 143, 94, 94, 86, 84, 71, 71, 71, 71, 71, 71, 59, 47, 47, 47, 47, 47, 47, 15, 12, 8, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:01,268 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 06:21:01,451 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 06:21:01,452 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:01,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:01,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1936305286, now seen corresponding path program 7 times [2023-12-25 06:21:01,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:01,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721569115] [2023-12-25 06:21:01,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:21:01,453 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 06:21:01,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:01,454 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 06:21:01,493 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 06:21:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:21:01,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 2057 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:21:01,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 74160 backedges. 676 proven. 4398 refuted. 0 times theorem prover too weak. 69086 trivial. 0 not checked. [2023-12-25 06:21:02,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:06,141 INFO L134 CoverageAnalysis]: Checked inductivity of 74160 backedges. 676 proven. 4438 refuted. 0 times theorem prover too weak. 69046 trivial. 0 not checked. [2023-12-25 06:21:06,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:06,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721569115] [2023-12-25 06:21:06,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721569115] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:06,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:06,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21] total 24 [2023-12-25 06:21:06,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921979543] [2023-12-25 06:21:06,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:06,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 06:21:06,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:06,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 06:21:06,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:21:06,146 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 06:21:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:08,437 INFO L93 Difference]: Finished difference Result 844 states and 4719 transitions. [2023-12-25 06:21:08,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-25 06:21:08,437 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 1452 [2023-12-25 06:21:08,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:08,454 INFO L225 Difference]: With dead ends: 844 [2023-12-25 06:21:08,454 INFO L226 Difference]: Without dead ends: 523 [2023-12-25 06:21:08,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2936 GetRequests, 2880 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=480, Invalid=2826, Unknown=0, NotChecked=0, Total=3306 [2023-12-25 06:21:08,465 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 170 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:08,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 230 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 06:21:08,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-25 06:21:08,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 451. [2023-12-25 06:21:08,527 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 06:21:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1805 transitions. [2023-12-25 06:21:08,538 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1805 transitions. Word has length 1452 [2023-12-25 06:21:08,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:08,538 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 1805 transitions. [2023-12-25 06:21:08,538 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 06:21:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1805 transitions. [2023-12-25 06:21:08,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1289 [2023-12-25 06:21:08,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:08,555 INFO L195 NwaCegarLoop]: trace histogram [117, 117, 92, 92, 80, 62, 58, 58, 58, 58, 58, 58, 55, 46, 46, 46, 46, 46, 46, 22, 12, 9, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:08,585 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 06:21:08,769 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 06:21:08,769 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:08,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:08,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2105840457, now seen corresponding path program 8 times [2023-12-25 06:21:08,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:08,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785364195] [2023-12-25 06:21:08,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:21:08,770 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 06:21:08,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:08,771 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 06:21:08,806 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 06:21:09,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:21:09,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:09,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 1823 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:21:09,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 56597 backedges. 709 proven. 3789 refuted. 0 times theorem prover too weak. 52099 trivial. 0 not checked. [2023-12-25 06:21:09,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 56597 backedges. 709 proven. 3833 refuted. 0 times theorem prover too weak. 52055 trivial. 0 not checked. [2023-12-25 06:21:12,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:12,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785364195] [2023-12-25 06:21:12,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785364195] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:12,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:12,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21] total 24 [2023-12-25 06:21:12,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661300666] [2023-12-25 06:21:12,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:12,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 06:21:12,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:12,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 06:21:12,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:21:12,237 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 06:21:12,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:12,843 INFO L93 Difference]: Finished difference Result 1018 states and 5682 transitions. [2023-12-25 06:21:12,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 06:21:12,844 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 1288 [2023-12-25 06:21:12,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:12,855 INFO L225 Difference]: With dead ends: 1018 [2023-12-25 06:21:12,855 INFO L226 Difference]: Without dead ends: 569 [2023-12-25 06:21:12,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2583 GetRequests, 2552 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:21:12,863 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:12,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 503 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:21:12,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2023-12-25 06:21:12,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 515. [2023-12-25 06:21:12,931 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 06:21:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 2363 transitions. [2023-12-25 06:21:12,939 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 2363 transitions. Word has length 1288 [2023-12-25 06:21:12,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:12,940 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 2363 transitions. [2023-12-25 06:21:12,940 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 06:21:12,940 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 2363 transitions. [2023-12-25 06:21:12,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1470 [2023-12-25 06:21:12,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:12,963 INFO L195 NwaCegarLoop]: trace histogram [139, 139, 98, 98, 90, 72, 69, 69, 69, 69, 69, 69, 67, 49, 49, 49, 49, 49, 49, 23, 21, 8, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:12,980 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 (22)] Forceful destruction successful, exit code 0 [2023-12-25 06:21:13,178 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 06:21:13,178 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:13,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:13,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1108374673, now seen corresponding path program 9 times [2023-12-25 06:21:13,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:13,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891792661] [2023-12-25 06:21:13,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:21:13,179 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 06:21:13,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:13,187 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 06:21:13,188 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 06:21:13,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-25 06:21:13,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:13,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 06:21:13,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 74503 backedges. 7634 proven. 0 refuted. 0 times theorem prover too weak. 66869 trivial. 0 not checked. [2023-12-25 06:21:13,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:21:13,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891792661] [2023-12-25 06:21:13,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891792661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:21:13,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:21:13,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 06:21:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831983499] [2023-12-25 06:21:13,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:21:13,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:21:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:21:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:21:13,426 INFO L87 Difference]: Start difference. First operand 515 states and 2363 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-25 06:21:13,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:13,501 INFO L93 Difference]: Finished difference Result 776 states and 3919 transitions. [2023-12-25 06:21:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:21:13,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 1469 [2023-12-25 06:21:13,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:13,506 INFO L225 Difference]: With dead ends: 776 [2023-12-25 06:21:13,506 INFO L226 Difference]: Without dead ends: 239 [2023-12-25 06:21:13,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1469 GetRequests, 1464 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 06:21:13,559 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:13,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 80 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:21:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-25 06:21:13,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 222. [2023-12-25 06:21:13,584 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 06:21:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 533 transitions. [2023-12-25 06:21:13,587 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 533 transitions. Word has length 1469 [2023-12-25 06:21:13,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:13,588 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 533 transitions. [2023-12-25 06:21:13,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-25 06:21:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 533 transitions. [2023-12-25 06:21:13,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1350 [2023-12-25 06:21:13,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:13,608 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 106, 106, 90, 84, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 37, 31, 23, 16, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:13,627 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 06:21:13,813 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 06:21:13,813 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:13,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash -99233301, now seen corresponding path program 10 times [2023-12-25 06:21:13,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:13,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987781389] [2023-12-25 06:21:13,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:21:13,815 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 06:21:13,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:13,816 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 06:21:13,840 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 06:21:14,310 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:21:14,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:14,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 1894 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-25 06:21:14,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 60703 backedges. 578 proven. 4667 refuted. 0 times theorem prover too weak. 55458 trivial. 0 not checked. [2023-12-25 06:21:14,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 60703 backedges. 578 proven. 4723 refuted. 0 times theorem prover too weak. 55402 trivial. 0 not checked. [2023-12-25 06:21:17,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:17,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987781389] [2023-12-25 06:21:17,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987781389] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:17,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:17,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23] total 26 [2023-12-25 06:21:17,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124169823] [2023-12-25 06:21:17,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:17,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 06:21:17,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:17,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 06:21:17,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2023-12-25 06:21:17,494 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 06:21:18,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:18,186 INFO L93 Difference]: Finished difference Result 501 states and 1783 transitions. [2023-12-25 06:21:18,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 06:21:18,187 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 1349 [2023-12-25 06:21:18,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:18,193 INFO L225 Difference]: With dead ends: 501 [2023-12-25 06:21:18,193 INFO L226 Difference]: Without dead ends: 281 [2023-12-25 06:21:18,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2706 GetRequests, 2672 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 06:21:18,197 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 38 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:18,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 501 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:21:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-25 06:21:18,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 260. [2023-12-25 06:21:18,226 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 06:21:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 753 transitions. [2023-12-25 06:21:18,229 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 753 transitions. Word has length 1349 [2023-12-25 06:21:18,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:18,230 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 753 transitions. [2023-12-25 06:21:18,230 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 06:21:18,230 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 753 transitions. [2023-12-25 06:21:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1690 [2023-12-25 06:21:18,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:18,254 INFO L195 NwaCegarLoop]: trace histogram [140, 140, 127, 127, 112, 105, 70, 70, 70, 70, 70, 70, 63, 63, 63, 63, 63, 63, 49, 35, 28, 22, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:18,273 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 06:21:18,456 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 06:21:18,456 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:18,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:18,457 INFO L85 PathProgramCache]: Analyzing trace with hash 685234793, now seen corresponding path program 11 times [2023-12-25 06:21:18,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:18,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070257021] [2023-12-25 06:21:18,458 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:21:18,458 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 06:21:18,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:18,475 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 06:21:18,489 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 06:21:18,851 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-12-25 06:21:18,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:18,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-25 06:21:18,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 95704 backedges. 49330 proven. 1822 refuted. 0 times theorem prover too weak. 44552 trivial. 0 not checked. [2023-12-25 06:21:19,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 95704 backedges. 2419 proven. 6791 refuted. 0 times theorem prover too weak. 86494 trivial. 0 not checked. [2023-12-25 06:21:22,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:22,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070257021] [2023-12-25 06:21:22,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070257021] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:22,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:22,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25] total 29 [2023-12-25 06:21:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149590074] [2023-12-25 06:21:22,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:22,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-25 06:21:22,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:22,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-25 06:21:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2023-12-25 06:21:22,170 INFO L87 Difference]: Start difference. First operand 260 states and 753 transitions. Second operand has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 27 states have internal predecessors, (95), 26 states have call successors, (37), 2 states have call predecessors, (37), 14 states have return successors, (50), 17 states have call predecessors, (50), 26 states have call successors, (50) [2023-12-25 06:21:22,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:22,876 INFO L93 Difference]: Finished difference Result 717 states and 2950 transitions. [2023-12-25 06:21:22,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-25 06:21:22,877 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 27 states have internal predecessors, (95), 26 states have call successors, (37), 2 states have call predecessors, (37), 14 states have return successors, (50), 17 states have call predecessors, (50), 26 states have call successors, (50) Word has length 1689 [2023-12-25 06:21:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:22,882 INFO L225 Difference]: With dead ends: 717 [2023-12-25 06:21:22,882 INFO L226 Difference]: Without dead ends: 456 [2023-12-25 06:21:22,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3390 GetRequests, 3349 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=1554, Unknown=0, NotChecked=0, Total=1806 [2023-12-25 06:21:22,893 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 103 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:22,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 674 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:21:22,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-12-25 06:21:22,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 384. [2023-12-25 06:21:22,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 230 states have (on average 1.0434782608695652) internal successors, (240), 228 states have internal predecessors, (240), 77 states have call successors, (77), 27 states have call predecessors, (77), 76 states have return successors, (549), 128 states have call predecessors, (549), 77 states have call successors, (549) [2023-12-25 06:21:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 866 transitions. [2023-12-25 06:21:22,953 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 866 transitions. Word has length 1689 [2023-12-25 06:21:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:22,953 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 866 transitions. [2023-12-25 06:21:22,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 27 states have internal predecessors, (95), 26 states have call successors, (37), 2 states have call predecessors, (37), 14 states have return successors, (50), 17 states have call predecessors, (50), 26 states have call successors, (50) [2023-12-25 06:21:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 866 transitions. [2023-12-25 06:21:23,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6397 [2023-12-25 06:21:23,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:23,241 INFO L195 NwaCegarLoop]: trace histogram [507, 507, 506, 506, 412, 409, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 253, 159, 156, 97, 95, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:23,246 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 06:21:23,442 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 06:21:23,443 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:23,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:23,444 INFO L85 PathProgramCache]: Analyzing trace with hash -213925651, now seen corresponding path program 12 times [2023-12-25 06:21:23,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:23,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272711437] [2023-12-25 06:21:23,447 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:21:23,447 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 06:21:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:23,462 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 06:21:23,495 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 06:21:24,178 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2023-12-25 06:21:24,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:24,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 06:21:24,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1383514 backedges. 3624 proven. 24895 refuted. 0 times theorem prover too weak. 1354995 trivial. 0 not checked. [2023-12-25 06:21:24,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1383514 backedges. 3624 proven. 24965 refuted. 0 times theorem prover too weak. 1354925 trivial. 0 not checked. [2023-12-25 06:21:35,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:35,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272711437] [2023-12-25 06:21:35,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272711437] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:35,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:35,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25] total 28 [2023-12-25 06:21:35,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068831125] [2023-12-25 06:21:35,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:35,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 06:21:35,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:35,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 06:21:35,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2023-12-25 06:21:35,706 INFO L87 Difference]: Start difference. First operand 384 states and 866 transitions. Second operand has 28 states, 26 states have (on average 3.076923076923077) internal successors, (80), 28 states have internal predecessors, (80), 23 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (38), 16 states have call predecessors, (38), 23 states have call successors, (38) [2023-12-25 06:21:36,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:36,441 INFO L93 Difference]: Finished difference Result 905 states and 3143 transitions. [2023-12-25 06:21:36,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:21:36,442 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), 23 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (38), 16 states have call predecessors, (38), 23 states have call successors, (38) Word has length 6396 [2023-12-25 06:21:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:36,470 INFO L225 Difference]: With dead ends: 905 [2023-12-25 06:21:36,470 INFO L226 Difference]: Without dead ends: 521 [2023-12-25 06:21:36,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12801 GetRequests, 12764 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 06:21:36,476 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 37 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:36,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 619 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:21:36,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2023-12-25 06:21:36,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 479. [2023-12-25 06:21:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 286 states have (on average 1.034965034965035) internal successors, (296), 284 states have internal predecessors, (296), 88 states have call successors, (88), 27 states have call predecessors, (88), 104 states have return successors, (848), 167 states have call predecessors, (848), 88 states have call successors, (848) [2023-12-25 06:21:36,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1232 transitions. [2023-12-25 06:21:36,583 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1232 transitions. Word has length 6396 [2023-12-25 06:21:36,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:36,587 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 1232 transitions. [2023-12-25 06:21:36,588 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), 23 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (38), 16 states have call predecessors, (38), 23 states have call successors, (38) [2023-12-25 06:21:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1232 transitions. [2023-12-25 06:21:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3406 [2023-12-25 06:21:36,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:36,645 INFO L195 NwaCegarLoop]: trace histogram [274, 274, 265, 265, 222, 215, 137, 137, 137, 137, 137, 137, 132, 132, 132, 132, 132, 132, 90, 78, 52, 50, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:36,666 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 06:21:36,853 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 06:21:36,853 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:36,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:36,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1639842508, now seen corresponding path program 13 times [2023-12-25 06:21:36,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:36,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167203055] [2023-12-25 06:21:36,856 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:21:36,856 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 06:21:36,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:36,857 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 06:21:36,890 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 06:21:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:21:38,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 4765 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 06:21:38,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 390946 backedges. 1490 proven. 13521 refuted. 0 times theorem prover too weak. 375935 trivial. 0 not checked. [2023-12-25 06:21:38,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 390946 backedges. 1490 proven. 13591 refuted. 0 times theorem prover too weak. 375865 trivial. 0 not checked. [2023-12-25 06:21:45,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:45,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167203055] [2023-12-25 06:21:45,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167203055] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:45,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:45,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25] total 28 [2023-12-25 06:21:45,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283898381] [2023-12-25 06:21:45,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:45,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 06:21:45,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:45,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 06:21:45,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2023-12-25 06:21:45,235 INFO L87 Difference]: Start difference. First operand 479 states and 1232 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 06:21:45,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:45,858 INFO L93 Difference]: Finished difference Result 1091 states and 4404 transitions. [2023-12-25 06:21:45,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:21:45,859 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 3405 [2023-12-25 06:21:45,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:45,868 INFO L225 Difference]: With dead ends: 1091 [2023-12-25 06:21:45,868 INFO L226 Difference]: Without dead ends: 608 [2023-12-25 06:21:45,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6819 GetRequests, 6782 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 06:21:45,874 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 63 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:45,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 549 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:21:45,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-12-25 06:21:45,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 568. [2023-12-25 06:21:45,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 336 states have (on average 1.0297619047619047) internal successors, (346), 334 states have internal predecessors, (346), 102 states have call successors, (102), 27 states have call predecessors, (102), 129 states have return successors, (1204), 206 states have call predecessors, (1204), 102 states have call successors, (1204) [2023-12-25 06:21:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1652 transitions. [2023-12-25 06:21:45,961 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1652 transitions. Word has length 3405 [2023-12-25 06:21:45,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:45,963 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 1652 transitions. [2023-12-25 06:21:45,963 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 06:21:45,963 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1652 transitions. [2023-12-25 06:21:45,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1285 [2023-12-25 06:21:45,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:45,978 INFO L195 NwaCegarLoop]: trace histogram [102, 102, 101, 101, 82, 82, 51, 51, 51, 51, 51, 51, 50, 50, 50, 50, 50, 50, 32, 31, 20, 19, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:46,019 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 06:21:46,192 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 06:21:46,192 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:46,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1822343161, now seen corresponding path program 14 times [2023-12-25 06:21:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:46,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593094801] [2023-12-25 06:21:46,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:21:46,194 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 06:21:46,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:46,200 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 06:21:46,201 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 06:21:46,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:21:46,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:46,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-25 06:21:46,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 54946 backedges. 607 proven. 5338 refuted. 0 times theorem prover too weak. 49001 trivial. 0 not checked. [2023-12-25 06:21:46,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:49,931 INFO L134 CoverageAnalysis]: Checked inductivity of 54946 backedges. 607 proven. 5423 refuted. 0 times theorem prover too weak. 48916 trivial. 0 not checked. [2023-12-25 06:21:49,931 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:49,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593094801] [2023-12-25 06:21:49,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593094801] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:49,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:49,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27] total 30 [2023-12-25 06:21:49,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881874066] [2023-12-25 06:21:49,932 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:49,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-25 06:21:49,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:49,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-25 06:21:49,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2023-12-25 06:21:49,933 INFO L87 Difference]: Start difference. First operand 568 states and 1652 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 06:21:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:50,575 INFO L93 Difference]: Finished difference Result 1252 states and 5649 transitions. [2023-12-25 06:21:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:21:50,576 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 1284 [2023-12-25 06:21:50,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:50,589 INFO L225 Difference]: With dead ends: 1252 [2023-12-25 06:21:50,589 INFO L226 Difference]: Without dead ends: 686 [2023-12-25 06:21:50,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2578 GetRequests, 2538 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=1520, Unknown=0, NotChecked=0, Total=1722 [2023-12-25 06:21:50,597 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 38 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:50,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 644 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:21:50,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-12-25 06:21:50,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 669. [2023-12-25 06:21:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 392 states have (on average 1.0255102040816326) internal successors, (402), 390 states have internal predecessors, (402), 119 states have call successors, (119), 27 states have call predecessors, (119), 157 states have return successors, (1748), 251 states have call predecessors, (1748), 119 states have call successors, (1748) [2023-12-25 06:21:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 2269 transitions. [2023-12-25 06:21:50,681 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 2269 transitions. Word has length 1284 [2023-12-25 06:21:50,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:50,681 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 2269 transitions. [2023-12-25 06:21:50,681 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 06:21:50,682 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 2269 transitions. [2023-12-25 06:21:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4251 [2023-12-25 06:21:50,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:50,772 INFO L195 NwaCegarLoop]: trace histogram [342, 342, 331, 331, 276, 269, 171, 171, 171, 171, 171, 171, 165, 165, 165, 165, 165, 165, 111, 98, 66, 62, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:50,800 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 06:21:50,987 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 06:21:50,987 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:50,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:50,988 INFO L85 PathProgramCache]: Analyzing trace with hash -73630726, now seen corresponding path program 15 times [2023-12-25 06:21:50,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:50,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57854627] [2023-12-25 06:21:50,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:21:50,990 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 06:21:50,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:50,991 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 06:21:51,020 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 06:21:52,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2023-12-25 06:21:52,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:52,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 06:21:52,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 609895 backedges. 49659 proven. 172 refuted. 0 times theorem prover too weak. 560064 trivial. 0 not checked. [2023-12-25 06:21:52,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:22:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 609895 backedges. 19092 proven. 643 refuted. 0 times theorem prover too weak. 590160 trivial. 0 not checked. [2023-12-25 06:22:00,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:22:00,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57854627] [2023-12-25 06:22:00,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57854627] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:22:00,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:22:00,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 19 [2023-12-25 06:22:00,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948701168] [2023-12-25 06:22:00,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:22:00,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-25 06:22:00,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:22:00,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-25 06:22:00,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:22:00,510 INFO L87 Difference]: Start difference. First operand 669 states and 2269 transitions. Second operand has 19 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 13 states have call successors, (27), 2 states have call predecessors, (27), 9 states have return successors, (36), 15 states have call predecessors, (36), 13 states have call successors, (36) [2023-12-25 06:22:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:22:00,934 INFO L93 Difference]: Finished difference Result 1854 states and 12520 transitions. [2023-12-25 06:22:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:22:00,935 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 13 states have call successors, (27), 2 states have call predecessors, (27), 9 states have return successors, (36), 15 states have call predecessors, (36), 13 states have call successors, (36) Word has length 4250 [2023-12-25 06:22:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:22:00,978 INFO L225 Difference]: With dead ends: 1854 [2023-12-25 06:22:00,978 INFO L226 Difference]: Without dead ends: 1174 [2023-12-25 06:22:00,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8507 GetRequests, 8481 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 06:22:00,998 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 64 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:22:00,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 250 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:22:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2023-12-25 06:22:01,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1020. [2023-12-25 06:22:01,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 598 states have (on average 1.0150501672240804) internal successors, (607), 595 states have internal predecessors, (607), 164 states have call successors, (164), 29 states have call predecessors, (164), 257 states have return successors, (5049), 395 states have call predecessors, (5049), 164 states have call successors, (5049) [2023-12-25 06:22:01,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 5820 transitions. [2023-12-25 06:22:01,241 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 5820 transitions. Word has length 4250 [2023-12-25 06:22:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:22:01,242 INFO L495 AbstractCegarLoop]: Abstraction has 1020 states and 5820 transitions. [2023-12-25 06:22:01,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 13 states have call successors, (27), 2 states have call predecessors, (27), 9 states have return successors, (36), 15 states have call predecessors, (36), 13 states have call successors, (36) [2023-12-25 06:22:01,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 5820 transitions. [2023-12-25 06:22:02,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15141 [2023-12-25 06:22:02,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:22:02,522 INFO L195 NwaCegarLoop]: trace histogram [1200, 1200, 1199, 1199, 973, 969, 600, 600, 600, 600, 600, 600, 599, 599, 599, 599, 599, 599, 374, 369, 230, 227, 1, 1, 1, 1, 1, 1] [2023-12-25 06:22:02,529 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 06:22:02,728 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 06:22:02,729 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:22:02,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:22:02,731 INFO L85 PathProgramCache]: Analyzing trace with hash -908555907, now seen corresponding path program 16 times [2023-12-25 06:22:02,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:22:02,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872723677] [2023-12-25 06:22:02,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:22:02,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:22:02,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:22:02,738 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 06:22:02,768 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 06:22:08,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:22:08,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:22:08,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 21150 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-25 06:22:08,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:22:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7768681 backedges. 4176 proven. 76382 refuted. 0 times theorem prover too weak. 7688123 trivial. 0 not checked. [2023-12-25 06:22:09,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:22:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7768681 backedges. 4176 proven. 76484 refuted. 0 times theorem prover too weak. 7688021 trivial. 0 not checked. [2023-12-25 06:22:39,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:22:39,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872723677] [2023-12-25 06:22:39,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872723677] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:22:39,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:22:39,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29] total 32 [2023-12-25 06:22:39,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697934741] [2023-12-25 06:22:39,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:22:39,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-25 06:22:39,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:22:39,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-25 06:22:39,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2023-12-25 06:22:39,378 INFO L87 Difference]: Start difference. First operand 1020 states and 5820 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 06:22:40,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:22:40,058 INFO L93 Difference]: Finished difference Result 2258 states and 22471 transitions. [2023-12-25 06:22:40,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 06:22:40,058 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 15140 [2023-12-25 06:22:40,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:22:40,126 INFO L225 Difference]: With dead ends: 2258 [2023-12-25 06:22:40,126 INFO L226 Difference]: Without dead ends: 1232 [2023-12-25 06:22:40,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30291 GetRequests, 30248 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=1755, Unknown=0, NotChecked=0, Total=1980 [2023-12-25 06:22:40,186 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 40 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:22:40,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 805 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:22:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2023-12-25 06:22:40,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1155. [2023-12-25 06:22:40,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 674 states have (on average 1.013353115727003) internal successors, (683), 671 states have internal predecessors, (683), 185 states have call successors, (185), 29 states have call predecessors, (185), 295 states have return successors, (6592), 454 states have call predecessors, (6592), 185 states have call successors, (6592) [2023-12-25 06:22:40,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 7460 transitions. [2023-12-25 06:22:40,857 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 7460 transitions. Word has length 15140 [2023-12-25 06:22:40,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:22:40,860 INFO L495 AbstractCegarLoop]: Abstraction has 1155 states and 7460 transitions. [2023-12-25 06:22:40,860 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 06:22:40,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 7460 transitions. [2023-12-25 06:22:41,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6155 [2023-12-25 06:22:41,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:22:41,193 INFO L195 NwaCegarLoop]: trace histogram [491, 491, 484, 484, 396, 392, 245, 245, 245, 245, 245, 245, 242, 242, 242, 242, 242, 242, 154, 147, 95, 92, 1, 1, 1, 1, 1, 1] [2023-12-25 06:22:41,351 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 (30)] Ended with exit code 0 [2023-12-25 06:22:41,412 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 06:22:41,412 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:22:41,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:22:41,413 INFO L85 PathProgramCache]: Analyzing trace with hash -799692608, now seen corresponding path program 17 times [2023-12-25 06:22:41,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:22:41,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805582001] [2023-12-25 06:22:41,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:22:41,416 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 06:22:41,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:22:41,417 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 06:22:41,418 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 06:22:42,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2023-12-25 06:22:42,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:22:42,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 06:22:42,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:22:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1280723 backedges. 421054 proven. 1662 refuted. 0 times theorem prover too weak. 858007 trivial. 0 not checked. [2023-12-25 06:22:42,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:22:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1280723 backedges. 8739 proven. 33968 refuted. 0 times theorem prover too weak. 1238016 trivial. 0 not checked. [2023-12-25 06:22:55,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:22:55,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805582001] [2023-12-25 06:22:55,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805582001] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:22:55,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:22:55,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29] total 33 [2023-12-25 06:22:55,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083761666] [2023-12-25 06:22:55,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:22:55,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-25 06:22:55,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:22:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-25 06:22:55,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 06:22:55,069 INFO L87 Difference]: Start difference. First operand 1155 states and 7460 transitions. Second operand has 33 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 31 states have internal predecessors, (105), 30 states have call successors, (41), 2 states have call predecessors, (41), 16 states have return successors, (56), 19 states have call predecessors, (56), 30 states have call successors, (56) [2023-12-25 06:22:56,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:22:56,258 INFO L93 Difference]: Finished difference Result 2498 states and 23625 transitions. [2023-12-25 06:22:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-25 06:22:56,259 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 31 states have internal predecessors, (105), 30 states have call successors, (41), 2 states have call predecessors, (41), 16 states have return successors, (56), 19 states have call predecessors, (56), 30 states have call successors, (56) Word has length 6154 [2023-12-25 06:22:56,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:22:56,294 INFO L225 Difference]: With dead ends: 2498 [2023-12-25 06:22:56,294 INFO L226 Difference]: Without dead ends: 1245 [2023-12-25 06:22:56,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12322 GetRequests, 12275 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=306, Invalid=2046, Unknown=0, NotChecked=0, Total=2352 [2023-12-25 06:22:56,340 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 151 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:22:56,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 854 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:22:56,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2023-12-25 06:22:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 1037. [2023-12-25 06:22:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 608 states have (on average 1.006578947368421) internal successors, (612), 607 states have internal predecessors, (612), 166 states have call successors, (166), 29 states have call predecessors, (166), 262 states have return successors, (3735), 400 states have call predecessors, (3735), 166 states have call successors, (3735) [2023-12-25 06:22:56,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 4513 transitions. [2023-12-25 06:22:56,532 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 4513 transitions. Word has length 6154 [2023-12-25 06:22:56,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:22:56,534 INFO L495 AbstractCegarLoop]: Abstraction has 1037 states and 4513 transitions. [2023-12-25 06:22:56,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 31 states have internal predecessors, (105), 30 states have call successors, (41), 2 states have call predecessors, (41), 16 states have return successors, (56), 19 states have call predecessors, (56), 30 states have call successors, (56) [2023-12-25 06:22:56,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 4513 transitions. [2023-12-25 06:23:01,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32236 [2023-12-25 06:23:01,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:23:01,682 INFO L195 NwaCegarLoop]: trace histogram [2564, 2564, 2545, 2545, 2077, 2055, 1282, 1282, 1282, 1282, 1282, 1282, 1272, 1272, 1272, 1272, 1272, 1272, 795, 783, 509, 468, 1, 1, 1, 1, 1, 1] [2023-12-25 06:23:01,692 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 06:23:01,890 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 06:23:01,890 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:23:01,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:23:01,894 INFO L85 PathProgramCache]: Analyzing trace with hash 40652359, now seen corresponding path program 18 times [2023-12-25 06:23:01,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:23:01,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526301914] [2023-12-25 06:23:01,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:23:01,910 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 06:23:01,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:23:01,911 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 06:23:01,964 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 06:23:10,834 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 106 check-sat command(s) [2023-12-25 06:23:10,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:23:10,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 2200 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-25 06:23:11,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:23:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 35246866 backedges. 6137780 proven. 1178 refuted. 0 times theorem prover too weak. 29107908 trivial. 0 not checked. [2023-12-25 06:23:12,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:24:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 35246866 backedges. 24797 proven. 179101 refuted. 0 times theorem prover too weak. 35042968 trivial. 0 not checked. [2023-12-25 06:24:25,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:24:25,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526301914] [2023-12-25 06:24:25,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526301914] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:24:25,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:24:25,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21] total 25 [2023-12-25 06:24:25,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755244646] [2023-12-25 06:24:25,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:24:25,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-25 06:24:25,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:24:25,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-25 06:24:25,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2023-12-25 06:24:25,645 INFO L87 Difference]: Start difference. First operand 1037 states and 4513 transitions. Second operand has 25 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 19 states have call successors, (32), 2 states have call predecessors, (32), 12 states have return successors, (45), 16 states have call predecessors, (45), 19 states have call successors, (45) [2023-12-25 06:24:26,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:24:26,425 INFO L93 Difference]: Finished difference Result 3102 states and 29744 transitions. [2023-12-25 06:24:26,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 06:24:26,426 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 19 states have call successors, (32), 2 states have call predecessors, (32), 12 states have return successors, (45), 16 states have call predecessors, (45), 19 states have call successors, (45) Word has length 32235 [2023-12-25 06:24:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:24:26,549 INFO L225 Difference]: With dead ends: 3102 [2023-12-25 06:24:26,549 INFO L226 Difference]: Without dead ends: 2040 [2023-12-25 06:24:26,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64480 GetRequests, 64445 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=1130, Unknown=0, NotChecked=0, Total=1332 [2023-12-25 06:24:26,595 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 50 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:24:26,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 384 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:24:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2023-12-25 06:24:27,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1667. [2023-12-25 06:24:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 975 states have (on average 1.005128205128205) internal successors, (980), 974 states have internal predecessors, (980), 247 states have call successors, (247), 30 states have call predecessors, (247), 444 states have return successors, (12229), 662 states have call predecessors, (12229), 247 states have call successors, (12229) [2023-12-25 06:24:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 13456 transitions. [2023-12-25 06:24:27,383 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 13456 transitions. Word has length 32235 [2023-12-25 06:24:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:24:27,384 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 13456 transitions. [2023-12-25 06:24:27,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.6956521739130435) internal successors, (85), 23 states have internal predecessors, (85), 19 states have call successors, (32), 2 states have call predecessors, (32), 12 states have return successors, (45), 16 states have call predecessors, (45), 19 states have call successors, (45) [2023-12-25 06:24:27,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 13456 transitions. [2023-12-25 06:24:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14106 [2023-12-25 06:24:28,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:24:28,432 INFO L195 NwaCegarLoop]: trace histogram [1124, 1124, 1111, 1111, 906, 903, 562, 562, 562, 562, 562, 562, 555, 555, 555, 555, 555, 555, 351, 341, 218, 208, 1, 1, 1, 1, 1, 1] [2023-12-25 06:24:28,457 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 06:24:28,648 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 06:24:28,648 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:24:28,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:24:28,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2085452881, now seen corresponding path program 19 times [2023-12-25 06:24:28,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:24:28,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393745723] [2023-12-25 06:24:28,654 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:24:28,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:24:28,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:24:28,655 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 06:24:28,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-25 06:24:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:24:35,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 19705 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 06:24:35,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:24:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6742270 backedges. 4663 proven. 76236 refuted. 0 times theorem prover too weak. 6661371 trivial. 0 not checked. [2023-12-25 06:24:36,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:25:03,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6742270 backedges. 4663 proven. 76356 refuted. 0 times theorem prover too weak. 6661251 trivial. 0 not checked. [2023-12-25 06:25:03,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:25:03,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393745723] [2023-12-25 06:25:03,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393745723] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:25:03,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:25:03,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 31] total 34 [2023-12-25 06:25:03,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987079953] [2023-12-25 06:25:03,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:25:03,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-25 06:25:03,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:25:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-25 06:25:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1028, Unknown=0, NotChecked=0, Total=1122 [2023-12-25 06:25:03,852 INFO L87 Difference]: Start difference. First operand 1667 states and 13456 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 06:25:05,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:25:05,088 INFO L93 Difference]: Finished difference Result 3671 states and 50982 transitions. [2023-12-25 06:25:05,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:25:05,089 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 14105 [2023-12-25 06:25:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:25:05,278 INFO L225 Difference]: With dead ends: 3671 [2023-12-25 06:25:05,279 INFO L226 Difference]: Without dead ends: 2002 [2023-12-25 06:25:05,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28222 GetRequests, 28176 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 06:25:05,370 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 45 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:25:05,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 845 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:25:05,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2023-12-25 06:25:06,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1926. [2023-12-25 06:25:06,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1926 states, 1117 states have (on average 1.0044762757385854) internal successors, (1122), 1116 states have internal predecessors, (1122), 293 states have call successors, (293), 30 states have call predecessors, (293), 515 states have return successors, (16945), 779 states have call predecessors, (16945), 293 states have call successors, (16945) [2023-12-25 06:25:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1926 states to 1926 states and 18360 transitions. [2023-12-25 06:25:06,368 INFO L78 Accepts]: Start accepts. Automaton has 1926 states and 18360 transitions. Word has length 14105 [2023-12-25 06:25:06,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:25:06,369 INFO L495 AbstractCegarLoop]: Abstraction has 1926 states and 18360 transitions. [2023-12-25 06:25:06,369 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 06:25:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1926 states and 18360 transitions. [2023-12-25 06:25:06,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1765 [2023-12-25 06:25:06,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:25:06,449 INFO L195 NwaCegarLoop]: trace histogram [140, 140, 139, 139, 113, 113, 70, 70, 70, 70, 70, 70, 69, 69, 69, 69, 69, 69, 44, 43, 27, 26, 1, 1, 1, 1, 1, 1] [2023-12-25 06:25:06,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-25 06:25:06,661 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 06:25:06,662 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:25:06,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:25:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash -446656615, now seen corresponding path program 20 times [2023-12-25 06:25:06,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:25:06,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911023158] [2023-12-25 06:25:06,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:25:06,663 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 06:25:06,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:25:06,665 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 06:25:06,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-25 06:25:07,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:25:07,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:25:07,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-25 06:25:07,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:25:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 104223 backedges. 1187 proven. 9139 refuted. 0 times theorem prover too weak. 93897 trivial. 0 not checked. [2023-12-25 06:25:07,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:25:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 104223 backedges. 1187 proven. 9279 refuted. 0 times theorem prover too weak. 93757 trivial. 0 not checked. [2023-12-25 06:25:14,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:25:14,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911023158] [2023-12-25 06:25:14,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911023158] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:25:14,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:25:14,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 33] total 36 [2023-12-25 06:25:14,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624836323] [2023-12-25 06:25:14,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:25:14,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-25 06:25:14,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:25:14,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-25 06:25:14,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1160, Unknown=0, NotChecked=0, Total=1260 [2023-12-25 06:25:14,159 INFO L87 Difference]: Start difference. First operand 1926 states and 18360 transitions. Second operand has 36 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 36 states have internal predecessors, (100), 33 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (48), 16 states have call predecessors, (48), 33 states have call successors, (48) [2023-12-25 06:25:15,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:25:15,999 INFO L93 Difference]: Finished difference Result 4228 states and 67965 transitions. [2023-12-25 06:25:16,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-25 06:25:16,000 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 36 states have internal predecessors, (100), 33 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (48), 16 states have call predecessors, (48), 33 states have call successors, (48) Word has length 1764 [2023-12-25 06:25:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:25:16,342 INFO L225 Difference]: With dead ends: 4228 [2023-12-25 06:25:16,343 INFO L226 Difference]: Without dead ends: 2296 [2023-12-25 06:25:16,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3541 GetRequests, 3492 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=273, Invalid=2277, Unknown=0, NotChecked=0, Total=2550 [2023-12-25 06:25:16,429 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 44 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:25:16,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1023 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:25:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2023-12-25 06:25:17,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2212. [2023-12-25 06:25:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 1277 states have (on average 1.0039154267815191) internal successors, (1282), 1276 states have internal predecessors, (1282), 339 states have call successors, (339), 30 states have call predecessors, (339), 595 states have return successors, (22209), 905 states have call predecessors, (22209), 339 states have call successors, (22209) [2023-12-25 06:25:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 23830 transitions. [2023-12-25 06:25:17,725 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 23830 transitions. Word has length 1764 [2023-12-25 06:25:17,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:25:17,726 INFO L495 AbstractCegarLoop]: Abstraction has 2212 states and 23830 transitions. [2023-12-25 06:25:17,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 36 states have internal predecessors, (100), 33 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (48), 16 states have call predecessors, (48), 33 states have call successors, (48) [2023-12-25 06:25:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 23830 transitions. [2023-12-25 06:25:31,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54210 [2023-12-25 06:25:31,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:25:31,738 INFO L195 NwaCegarLoop]: trace histogram [4338, 4338, 4253, 4253, 3481, 3474, 2169, 2169, 2169, 2169, 2169, 2169, 2126, 2126, 2126, 2126, 2126, 2126, 1355, 1305, 857, 779, 1, 1, 1, 1, 1, 1] [2023-12-25 06:25:31,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-12-25 06:25:31,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:25:31,959 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:25:31,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:25:31,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1649229567, now seen corresponding path program 21 times [2023-12-25 06:25:32,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:25:32,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127099911] [2023-12-25 06:25:32,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:25:32,009 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 06:25:32,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:25:32,010 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:25:32,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-25 06:25:39,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2023-12-25 06:25:39,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:25:39,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-25 06:25:40,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:25:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 99715078 backedges. 17113 proven. 340772 refuted. 0 times theorem prover too weak. 99357193 trivial. 0 not checked. [2023-12-25 06:25:44,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:27:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 99715078 backedges. 17113 proven. 340933 refuted. 0 times theorem prover too weak. 99357032 trivial. 0 not checked. [2023-12-25 06:27:41,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:27:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127099911] [2023-12-25 06:27:41,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127099911] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:27:41,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:27:41,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 35] total 38 [2023-12-25 06:27:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049955085] [2023-12-25 06:27:41,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:27:41,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-25 06:27:41,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:27:41,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-25 06:27:41,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1300, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 06:27:41,536 INFO L87 Difference]: Start difference. First operand 2212 states and 23830 transitions. Second operand has 38 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 38 states have internal predecessors, (105), 35 states have call successors, (38), 1 states have call predecessors, (38), 17 states have return successors, (51), 17 states have call predecessors, (51), 35 states have call successors, (51) [2023-12-25 06:27:43,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:27:43,503 INFO L93 Difference]: Finished difference Result 4818 states and 86794 transitions. [2023-12-25 06:27:43,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-25 06:27:43,504 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 38 states have internal predecessors, (105), 35 states have call successors, (38), 1 states have call predecessors, (38), 17 states have return successors, (51), 17 states have call predecessors, (51), 35 states have call successors, (51) Word has length 54209 [2023-12-25 06:27:43,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:27:43,752 INFO L225 Difference]: With dead ends: 4818 [2023-12-25 06:27:43,753 INFO L226 Difference]: Without dead ends: 2604 [2023-12-25 06:27:43,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108432 GetRequests, 108380 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=298, Invalid=2564, Unknown=0, NotChecked=0, Total=2862 [2023-12-25 06:27:43,897 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 21 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:27:43,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1186 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:27:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2023-12-25 06:27:46,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2465. [2023-12-25 06:27:46,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 1415 states have (on average 1.0035335689045937) internal successors, (1420), 1414 states have internal predecessors, (1420), 385 states have call successors, (385), 30 states have call predecessors, (385), 664 states have return successors, (28115), 1020 states have call predecessors, (28115), 385 states have call successors, (28115) [2023-12-25 06:27:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 29920 transitions. [2023-12-25 06:27:46,541 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 29920 transitions. Word has length 54209 [2023-12-25 06:27:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:27:46,554 INFO L495 AbstractCegarLoop]: Abstraction has 2465 states and 29920 transitions. [2023-12-25 06:27:46,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 38 states have internal predecessors, (105), 35 states have call successors, (38), 1 states have call predecessors, (38), 17 states have return successors, (51), 17 states have call predecessors, (51), 35 states have call successors, (51) [2023-12-25 06:27:46,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 29920 transitions. [2023-12-25 06:27:51,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33352 [2023-12-25 06:27:51,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:27:51,962 INFO L195 NwaCegarLoop]: trace histogram [2666, 2666, 2619, 2619, 2142, 2138, 1333, 1333, 1333, 1333, 1333, 1333, 1309, 1309, 1309, 1309, 1309, 1309, 833, 805, 524, 481, 1, 1, 1, 1, 1, 1] [2023-12-25 06:27:52,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-25 06:27:52,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:27:52,163 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:27:52,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:27:52,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1706821453, now seen corresponding path program 22 times [2023-12-25 06:27:52,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:27:52,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52712868] [2023-12-25 06:27:52,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:27:52,175 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 06:27:52,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:27:52,193 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:27:52,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-25 06:28:04,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:28:04,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:28:05,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 46576 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-25 06:28:05,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:28:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 37731920 backedges. 9407 proven. 224352 refuted. 0 times theorem prover too weak. 37498161 trivial. 0 not checked. [2023-12-25 06:28:07,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:29:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 37731920 backedges. 9407 proven. 224536 refuted. 0 times theorem prover too weak. 37497977 trivial. 0 not checked. [2023-12-25 06:29:19,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:29:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52712868] [2023-12-25 06:29:19,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52712868] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:29:19,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:29:19,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 37] total 40 [2023-12-25 06:29:19,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129070615] [2023-12-25 06:29:19,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:29:19,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-25 06:29:19,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:29:19,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-25 06:29:19,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1448, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 06:29:19,633 INFO L87 Difference]: Start difference. First operand 2465 states and 29920 transitions. Second operand has 40 states, 38 states have (on average 2.8947368421052633) internal successors, (110), 40 states have internal predecessors, (110), 37 states have call successors, (40), 1 states have call predecessors, (40), 18 states have return successors, (54), 18 states have call predecessors, (54), 37 states have call successors, (54) [2023-12-25 06:29:21,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:29:21,827 INFO L93 Difference]: Finished difference Result 5339 states and 107038 transitions. [2023-12-25 06:29:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 06:29:21,828 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.8947368421052633) internal successors, (110), 40 states have internal predecessors, (110), 37 states have call successors, (40), 1 states have call predecessors, (40), 18 states have return successors, (54), 18 states have call predecessors, (54), 37 states have call successors, (54) Word has length 33351 [2023-12-25 06:29:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:29:22,224 INFO L225 Difference]: With dead ends: 5339 [2023-12-25 06:29:22,224 INFO L226 Difference]: Without dead ends: 2868 [2023-12-25 06:29:22,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66717 GetRequests, 66662 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=2867, Unknown=0, NotChecked=0, Total=3192 [2023-12-25 06:29:22,595 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 84 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:29:22,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 1298 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:29:22,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2023-12-25 06:29:25,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2745. [2023-12-25 06:29:25,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2745 states, 1571 states have (on average 1.003182686187142) internal successors, (1576), 1570 states have internal predecessors, (1576), 431 states have call successors, (431), 30 states have call predecessors, (431), 742 states have return successors, (34670), 1144 states have call predecessors, (34670), 431 states have call successors, (34670) [2023-12-25 06:29:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 36677 transitions. [2023-12-25 06:29:26,280 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 36677 transitions. Word has length 33351 [2023-12-25 06:29:26,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:29:26,285 INFO L495 AbstractCegarLoop]: Abstraction has 2745 states and 36677 transitions. [2023-12-25 06:29:26,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.8947368421052633) internal successors, (110), 40 states have internal predecessors, (110), 37 states have call successors, (40), 1 states have call predecessors, (40), 18 states have return successors, (54), 18 states have call predecessors, (54), 37 states have call successors, (54) [2023-12-25 06:29:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 36677 transitions. [2023-12-25 06:29:28,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19759 [2023-12-25 06:29:28,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:29:28,459 INFO L195 NwaCegarLoop]: trace histogram [1578, 1578, 1553, 1553, 1270, 1264, 789, 789, 789, 789, 789, 789, 776, 776, 776, 776, 776, 776, 494, 475, 308, 289, 1, 1, 1, 1, 1, 1] [2023-12-25 06:29:28,684 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 (36)] Forcibly destroying the process [2023-12-25 06:29:28,823 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 (36)] Forceful destruction successful, exit code 137 [2023-12-25 06:29:28,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:29:28,823 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:29:28,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:29:28,824 INFO L85 PathProgramCache]: Analyzing trace with hash 284272963, now seen corresponding path program 23 times [2023-12-25 06:29:28,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:29:28,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691625147] [2023-12-25 06:29:28,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:29:28,830 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 06:29:28,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:29:28,831 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:29:28,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-25 06:29:31,085 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 57 check-sat command(s) [2023-12-25 06:29:31,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:29:31,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 06:29:31,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:29:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13236253 backedges. 2659535 proven. 877 refuted. 0 times theorem prover too weak. 10575841 trivial. 0 not checked. [2023-12-25 06:29:31,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:30:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 13236253 backedges. 22178 proven. 90049 refuted. 0 times theorem prover too weak. 13124026 trivial. 0 not checked. [2023-12-25 06:30:11,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:30:11,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691625147] [2023-12-25 06:30:11,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691625147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:30:11,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:30:11,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 21 [2023-12-25 06:30:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922507972] [2023-12-25 06:30:11,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:30:11,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-25 06:30:11,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:30:11,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-25 06:30:11,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:30:11,572 INFO L87 Difference]: Start difference. First operand 2745 states and 36677 transitions. Second operand has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 18 states have call successors, (29), 2 states have call predecessors, (29), 10 states have return successors, (38), 13 states have call predecessors, (38), 18 states have call successors, (38) [2023-12-25 06:30:14,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:30:14,442 INFO L93 Difference]: Finished difference Result 7072 states and 186830 transitions. [2023-12-25 06:30:14,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 06:30:14,443 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 18 states have call successors, (29), 2 states have call predecessors, (29), 10 states have return successors, (38), 13 states have call predecessors, (38), 18 states have call successors, (38) Word has length 19758 [2023-12-25 06:30:14,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:30:15,463 INFO L225 Difference]: With dead ends: 7072 [2023-12-25 06:30:15,463 INFO L226 Difference]: Without dead ends: 4315 [2023-12-25 06:30:15,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39524 GetRequests, 39495 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:30:15,822 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 33 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:30:15,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 372 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:30:15,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2023-12-25 06:30:22,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 3530. [2023-12-25 06:30:22,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 1995 states have (on average 1.0030075187969925) internal successors, (2001), 1994 states have internal predecessors, (2001), 583 states have call successors, (583), 32 states have call predecessors, (583), 951 states have return successors, (68745), 1503 states have call predecessors, (68745), 583 states have call successors, (68745) [2023-12-25 06:30:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 71329 transitions. [2023-12-25 06:30:23,772 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 71329 transitions. Word has length 19758 [2023-12-25 06:30:23,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:30:23,773 INFO L495 AbstractCegarLoop]: Abstraction has 3530 states and 71329 transitions. [2023-12-25 06:30:23,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 18 states have call successors, (29), 2 states have call predecessors, (29), 10 states have return successors, (38), 13 states have call predecessors, (38), 18 states have call successors, (38) [2023-12-25 06:30:23,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 71329 transitions. [2023-12-25 06:30:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21537 [2023-12-25 06:30:26,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:30:26,635 INFO L195 NwaCegarLoop]: trace histogram [1710, 1710, 1703, 1703, 1385, 1376, 855, 855, 855, 855, 855, 855, 851, 851, 851, 851, 851, 851, 530, 525, 334, 318, 1, 1, 1, 1, 1, 1] [2023-12-25 06:30:26,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-25 06:30:26,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:30:26,844 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:30:26,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:30:26,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2058781344, now seen corresponding path program 24 times [2023-12-25 06:30:26,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:30:26,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482801424] [2023-12-25 06:30:26,851 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:30:26,852 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 06:30:26,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:30:26,853 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:30:26,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-25 06:30:42,793 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 135 check-sat command(s) [2023-12-25 06:30:42,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:30:42,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-25 06:30:42,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:30:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15726492 backedges. 773035 proven. 299 refuted. 0 times theorem prover too weak. 14953158 trivial. 0 not checked. [2023-12-25 06:30:44,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:31:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 15726492 backedges. 102503 proven. 2047 refuted. 0 times theorem prover too weak. 15621942 trivial. 0 not checked. [2023-12-25 06:31:43,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:31:43,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482801424] [2023-12-25 06:31:43,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482801424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:31:43,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:31:43,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 21 [2023-12-25 06:31:43,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608710282] [2023-12-25 06:31:43,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:31:43,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-25 06:31:43,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:31:43,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-25 06:31:43,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:31:43,147 INFO L87 Difference]: Start difference. First operand 3530 states and 71329 transitions. Second operand has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 13 states have call successors, (29), 2 states have call predecessors, (29), 10 states have return successors, (39), 18 states have call predecessors, (39), 13 states have call successors, (39) [2023-12-25 06:31:48,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:31:48,249 INFO L93 Difference]: Finished difference Result 8297 states and 356107 transitions. [2023-12-25 06:31:48,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:31:48,250 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 13 states have call successors, (29), 2 states have call predecessors, (29), 10 states have return successors, (39), 18 states have call predecessors, (39), 13 states have call successors, (39) Word has length 21536 [2023-12-25 06:31:48,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:31:50,568 INFO L225 Difference]: With dead ends: 8297 [2023-12-25 06:31:50,568 INFO L226 Difference]: Without dead ends: 4740 [2023-12-25 06:31:51,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43080 GetRequests, 43051 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:31:51,190 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 42 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:31:51,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 376 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:31:51,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4740 states. [2023-12-25 06:32:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4740 to 4241. [2023-12-25 06:32:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4241 states, 2360 states have (on average 1.0033898305084745) internal successors, (2368), 2359 states have internal predecessors, (2368), 757 states have call successors, (757), 39 states have call predecessors, (757), 1123 states have return successors, (124953), 1842 states have call predecessors, (124953), 757 states have call successors, (124953) [2023-12-25 06:32:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 128078 transitions. [2023-12-25 06:32:06,525 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 128078 transitions. Word has length 21536 [2023-12-25 06:32:06,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:32:06,526 INFO L495 AbstractCegarLoop]: Abstraction has 4241 states and 128078 transitions. [2023-12-25 06:32:06,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 19 states have internal predecessors, (75), 13 states have call successors, (29), 2 states have call predecessors, (29), 10 states have return successors, (39), 18 states have call predecessors, (39), 13 states have call successors, (39) [2023-12-25 06:32:06,526 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 128078 transitions. [2023-12-25 06:32:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21171 [2023-12-25 06:32:09,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:32:09,482 INFO L195 NwaCegarLoop]: trace histogram [1687, 1687, 1668, 1668, 1361, 1353, 843, 843, 843, 843, 843, 843, 834, 834, 834, 834, 834, 834, 527, 510, 326, 315, 1, 1, 1, 1, 1, 1] [2023-12-25 06:32:09,511 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 (38)] Forceful destruction successful, exit code 0 [2023-12-25 06:32:09,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:32:09,696 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:32:09,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:32:09,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2054969467, now seen corresponding path program 25 times [2023-12-25 06:32:09,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:32:09,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361109225] [2023-12-25 06:32:09,703 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:32:09,703 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 06:32:09,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:32:09,704 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:32:09,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-25 06:32:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:32:18,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 29570 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-25 06:32:19,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:32:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 15196576 backedges. 10020 proven. 146930 refuted. 0 times theorem prover too weak. 15039626 trivial. 0 not checked. [2023-12-25 06:32:20,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:33:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 15196576 backedges. 10020 proven. 147138 refuted. 0 times theorem prover too weak. 15039418 trivial. 0 not checked. [2023-12-25 06:33:11,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:33:11,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361109225] [2023-12-25 06:33:11,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361109225] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:33:11,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:33:11,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 39] total 42 [2023-12-25 06:33:11,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587385004] [2023-12-25 06:33:11,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:33:11,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-25 06:33:11,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:33:11,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-25 06:33:11,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1604, Unknown=0, NotChecked=0, Total=1722 [2023-12-25 06:33:11,646 INFO L87 Difference]: Start difference. First operand 4241 states and 128078 transitions. Second operand has 42 states, 40 states have (on average 2.875) internal successors, (115), 42 states have internal predecessors, (115), 39 states have call successors, (42), 1 states have call predecessors, (42), 19 states have return successors, (57), 19 states have call predecessors, (57), 39 states have call successors, (57) [2023-12-25 06:33:19,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:33:19,323 INFO L93 Difference]: Finished difference Result 9378 states and 473982 transitions. [2023-12-25 06:33:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-25 06:33:19,323 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 2.875) internal successors, (115), 42 states have internal predecessors, (115), 39 states have call successors, (42), 1 states have call predecessors, (42), 19 states have return successors, (57), 19 states have call predecessors, (57), 39 states have call successors, (57) Word has length 21170 [2023-12-25 06:33:19,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:33:22,069 INFO L225 Difference]: With dead ends: 9378 [2023-12-25 06:33:22,069 INFO L226 Difference]: Without dead ends: 5132 [2023-12-25 06:33:22,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42356 GetRequests, 42298 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=352, Invalid=3188, Unknown=0, NotChecked=0, Total=3540 [2023-12-25 06:33:22,959 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 57 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 06:33:22,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1377 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 06:33:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5132 states.