/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 06:20:14,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 06:20:14,457 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 06:20:14,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 06:20:14,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 06:20:14,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 06:20:14,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 06:20:14,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 06:20:14,476 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 06:20:14,479 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 06:20:14,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 06:20:14,480 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 06:20:14,480 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 06:20:14,481 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 06:20:14,481 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 06:20:14,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 06:20:14,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 06:20:14,482 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 06:20:14,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 06:20:14,482 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 06:20:14,482 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 06:20:14,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 06:20:14,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 06:20:14,483 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 06:20:14,483 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 06:20:14,483 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 06:20:14,484 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 06:20:14,484 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 06:20:14,484 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 06:20:14,485 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 06:20:14,485 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 06:20:14,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 06:20:14,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 06:20:14,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 06:20:14,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:20:14,486 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 06:20:14,486 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 06:20:14,486 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 06:20:14,486 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 06:20:14,487 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 06:20:14,487 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 06:20:14,487 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 06:20:14,487 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 06:20:14,487 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 06:20:14,488 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 06:20:14,488 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 06:20:14,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 06:20:14,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 06:20:14,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 06:20:14,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 06:20:14,713 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 06:20:14,713 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 06:20:14,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c [2023-12-25 06:20:15,871 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 06:20:16,005 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 06:20:16,005 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c [2023-12-25 06:20:16,010 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe6d1a23/d5866aa14b4548bda54da6279f39e352/FLAG1e5eb4e76 [2023-12-25 06:20:16,023 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe6d1a23/d5866aa14b4548bda54da6279f39e352 [2023-12-25 06:20:16,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 06:20:16,027 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 06:20:16,030 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 06:20:16,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 06:20:16,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 06:20:16,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,035 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c240d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16, skipping insertion in model container [2023-12-25 06:20:16,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,051 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 06:20:16,165 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c[950,963] [2023-12-25 06:20:16,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:20:16,176 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 06:20:16,187 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c[950,963] [2023-12-25 06:20:16,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 06:20:16,197 INFO L206 MainTranslator]: Completed translation [2023-12-25 06:20:16,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16 WrapperNode [2023-12-25 06:20:16,198 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 06:20:16,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 06:20:16,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 06:20:16,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 06:20:16,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,211 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,222 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-12-25 06:20:16,223 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 06:20:16,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 06:20:16,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 06:20:16,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 06:20:16,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,241 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,248 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 06:20:16,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,259 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 06:20:16,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 06:20:16,259 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 06:20:16,260 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 06:20:16,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16" (1/1) ... [2023-12-25 06:20:16,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 06:20:16,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 06:20:16,316 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 06:20:16,324 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 06:20:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 06:20:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 06:20:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-12-25 06:20:16,341 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-12-25 06:20:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-12-25 06:20:16,342 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-12-25 06:20:16,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 06:20:16,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 06:20:16,388 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 06:20:16,390 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 06:20:16,496 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 06:20:16,517 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 06:20:16,518 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 06:20:16,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:20:16 BoogieIcfgContainer [2023-12-25 06:20:16,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 06:20:16,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 06:20:16,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 06:20:16,522 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 06:20:16,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 06:20:16" (1/3) ... [2023-12-25 06:20:16,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6965753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:20:16, skipping insertion in model container [2023-12-25 06:20:16,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 06:20:16" (2/3) ... [2023-12-25 06:20:16,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6965753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 06:20:16, skipping insertion in model container [2023-12-25 06:20:16,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 06:20:16" (3/3) ... [2023-12-25 06:20:16,524 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-2.c [2023-12-25 06:20:16,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 06:20:16,536 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 06:20:16,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 06:20:16,591 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;@43338762, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 06:20:16,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 06:20:16,594 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 06:20:16,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-25 06:20:16,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:16,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:16,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:16,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1178273046, now seen corresponding path program 1 times [2023-12-25 06:20:16,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:16,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271519253] [2023-12-25 06:20:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:16,618 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 06:20:16,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:16,620 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 06:20:16,676 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 06:20:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:16,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:20:16,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:16,795 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 06:20:16,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:20:16,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:16,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271519253] [2023-12-25 06:20:16,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271519253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:20:16,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:20:16,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:20:16,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191903415] [2023-12-25 06:20:16,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:20:16,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:20:16,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:16,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:20:16,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:20:16,821 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 06:20:16,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:16,901 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2023-12-25 06:20:16,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:20:16,903 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 06:20:16,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:16,908 INFO L225 Difference]: With dead ends: 32 [2023-12-25 06:20:16,908 INFO L226 Difference]: Without dead ends: 24 [2023-12-25 06:20:16,910 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 06:20:16,912 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:16,913 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 06:20:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-25 06:20:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-25 06:20:16,943 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 06:20:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-25 06:20:16,946 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 9 [2023-12-25 06:20:16,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:16,946 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-25 06:20:16,947 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 06:20:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-25 06:20:16,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-25 06:20:16,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:16,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:16,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:17,149 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 06:20:17,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:17,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:17,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1422996679, now seen corresponding path program 1 times [2023-12-25 06:20:17,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:17,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503880629] [2023-12-25 06:20:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:17,151 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 06:20:17,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:17,153 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 06:20:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:17,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 06:20:17,172 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 06:20:17,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:17,217 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 06:20:17,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:20:17,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:17,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503880629] [2023-12-25 06:20:17,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503880629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:20:17,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:20:17,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 06:20:17,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148147328] [2023-12-25 06:20:17,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:20:17,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 06:20:17,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:17,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 06:20:17,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 06:20:17,220 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 06:20:17,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:17,266 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2023-12-25 06:20:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 06:20:17,266 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 06:20:17,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:17,267 INFO L225 Difference]: With dead ends: 30 [2023-12-25 06:20:17,267 INFO L226 Difference]: Without dead ends: 26 [2023-12-25 06:20:17,267 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 06:20:17,268 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:17,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 65 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:20:17,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-25 06:20:17,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-12-25 06:20:17,273 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 06:20:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-25 06:20:17,274 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 10 [2023-12-25 06:20:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:17,274 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-25 06:20:17,274 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 06:20:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-25 06:20:17,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-25 06:20:17,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:17,275 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 06:20:17,282 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 (3)] Ended with exit code 0 [2023-12-25 06:20:17,476 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 06:20:17,477 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:17,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:17,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1917903498, now seen corresponding path program 1 times [2023-12-25 06:20:17,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:17,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397613809] [2023-12-25 06:20:17,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:17,478 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 06:20:17,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:17,480 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 06:20:17,494 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 06:20:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:17,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:20:17,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:17,576 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 06:20:17,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:17,740 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 06:20:17,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:17,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397613809] [2023-12-25 06:20:17,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397613809] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:17,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:17,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-25 06:20:17,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758724933] [2023-12-25 06:20:17,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:17,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 06:20:17,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:17,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 06:20:17,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:20:17,743 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 06:20:17,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:17,855 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2023-12-25 06:20:17,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:20:17,856 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 06:20:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:17,857 INFO L225 Difference]: With dead ends: 36 [2023-12-25 06:20:17,857 INFO L226 Difference]: Without dead ends: 32 [2023-12-25 06:20:17,858 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 06:20:17,858 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 06:20:17,859 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 06:20:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-25 06:20:17,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2023-12-25 06:20:17,864 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 06:20:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-12-25 06:20:17,865 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 21 [2023-12-25 06:20:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:17,865 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-12-25 06:20:17,865 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 06:20:17,866 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-12-25 06:20:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-25 06:20:17,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:17,867 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 06:20:17,869 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 06:20:18,067 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 06:20:18,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:18,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:18,068 INFO L85 PathProgramCache]: Analyzing trace with hash -773369340, now seen corresponding path program 1 times [2023-12-25 06:20:18,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:18,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164793517] [2023-12-25 06:20:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:18,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:18,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:18,070 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 06:20:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:18,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:20:18,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:18,102 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 06:20:18,163 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 06:20:18,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:18,301 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 06:20:18,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:18,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164793517] [2023-12-25 06:20:18,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164793517] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:18,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:18,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-25 06:20:18,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190275165] [2023-12-25 06:20:18,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:18,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 06:20:18,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:18,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 06:20:18,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:20:18,304 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 06:20:18,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:18,445 INFO L93 Difference]: Finished difference Result 60 states and 95 transitions. [2023-12-25 06:20:18,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:20:18,446 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 06:20:18,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:18,447 INFO L225 Difference]: With dead ends: 60 [2023-12-25 06:20:18,447 INFO L226 Difference]: Without dead ends: 34 [2023-12-25 06:20:18,448 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 06:20:18,449 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 06:20:18,449 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 06:20:18,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-25 06:20:18,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2023-12-25 06:20:18,455 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 06:20:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2023-12-25 06:20:18,456 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 22 [2023-12-25 06:20:18,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:18,457 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2023-12-25 06:20:18,457 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 06:20:18,457 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2023-12-25 06:20:18,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-25 06:20:18,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:18,458 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 06:20:18,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-25 06:20:18,660 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 06:20:18,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:18,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:18,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1000055446, now seen corresponding path program 1 times [2023-12-25 06:20:18,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:18,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969194988] [2023-12-25 06:20:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:18,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:18,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:18,663 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 06:20:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:18,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:20:18,691 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 06:20:18,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:18,808 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 06:20:18,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:19,122 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 06:20:19,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:19,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969194988] [2023-12-25 06:20:19,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969194988] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:19,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:19,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2023-12-25 06:20:19,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856981397] [2023-12-25 06:20:19,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:19,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 06:20:19,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:19,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 06:20:19,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:20:19,124 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 06:20:19,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:19,325 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2023-12-25 06:20:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:20:19,326 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 06:20:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:19,327 INFO L225 Difference]: With dead ends: 48 [2023-12-25 06:20:19,328 INFO L226 Difference]: Without dead ends: 44 [2023-12-25 06:20:19,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-12-25 06:20:19,329 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 06:20:19,329 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 06:20:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-25 06:20:19,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2023-12-25 06:20:19,337 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 06:20:19,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2023-12-25 06:20:19,337 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 53 transitions. Word has length 33 [2023-12-25 06:20:19,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:19,338 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 53 transitions. [2023-12-25 06:20:19,338 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 06:20:19,338 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2023-12-25 06:20:19,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-25 06:20:19,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:19,339 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 06:20:19,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-25 06:20:19,540 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 06:20:19,540 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:19,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:19,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1077323161, now seen corresponding path program 1 times [2023-12-25 06:20:19,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:19,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623559188] [2023-12-25 06:20:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:19,542 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 06:20:19,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:19,544 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 06:20:19,547 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 06:20:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:19,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:20:19,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:19,645 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 06:20:19,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:19,814 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 06:20:19,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:19,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623559188] [2023-12-25 06:20:19,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623559188] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:19,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:19,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2023-12-25 06:20:19,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751578009] [2023-12-25 06:20:19,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:19,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 06:20:19,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:19,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 06:20:19,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-25 06:20:19,816 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 06:20:19,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:19,968 INFO L93 Difference]: Finished difference Result 78 states and 149 transitions. [2023-12-25 06:20:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 06:20:19,968 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 06:20:19,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:19,970 INFO L225 Difference]: With dead ends: 78 [2023-12-25 06:20:19,970 INFO L226 Difference]: Without dead ends: 45 [2023-12-25 06:20:19,970 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 06:20:19,971 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 06:20:19,971 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 06:20:19,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-25 06:20:19,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-25 06:20:19,979 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 06:20:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 76 transitions. [2023-12-25 06:20:19,980 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 76 transitions. Word has length 34 [2023-12-25 06:20:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:19,980 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 76 transitions. [2023-12-25 06:20:19,980 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 06:20:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 76 transitions. [2023-12-25 06:20:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-25 06:20:19,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:19,982 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 06:20:19,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:20,184 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 06:20:20,185 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:20,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:20,185 INFO L85 PathProgramCache]: Analyzing trace with hash -797673590, now seen corresponding path program 2 times [2023-12-25 06:20:20,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:20,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445819959] [2023-12-25 06:20:20,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:20,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:20,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:20,188 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 06:20:20,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-25 06:20:20,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:20,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:20,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:20:20,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:20,315 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 06:20:20,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:20,682 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 06:20:20,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:20,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445819959] [2023-12-25 06:20:20,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445819959] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:20,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:20,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2023-12-25 06:20:20,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48101539] [2023-12-25 06:20:20,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:20,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:20:20,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:20,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:20:20,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:20:20,684 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 06:20:20,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:20,946 INFO L93 Difference]: Finished difference Result 69 states and 141 transitions. [2023-12-25 06:20:20,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:20:20,948 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 06:20:20,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:20,949 INFO L225 Difference]: With dead ends: 69 [2023-12-25 06:20:20,949 INFO L226 Difference]: Without dead ends: 65 [2023-12-25 06:20:20,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-25 06:20:20,950 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 06:20:20,951 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 06:20:20,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-25 06:20:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2023-12-25 06:20:20,986 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 06:20:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 89 transitions. [2023-12-25 06:20:20,988 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 89 transitions. Word has length 45 [2023-12-25 06:20:20,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:20,989 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 89 transitions. [2023-12-25 06:20:20,989 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 06:20:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 89 transitions. [2023-12-25 06:20:20,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-25 06:20:20,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:20,995 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 06:20:21,000 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 06:20:21,196 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 06:20:21,196 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:21,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:21,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1078970546, now seen corresponding path program 1 times [2023-12-25 06:20:21,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:21,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033806187] [2023-12-25 06:20:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:21,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:21,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:21,199 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 06:20:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:21,237 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 06:20:21,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:20:21,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:21,310 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 06:20:21,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:21,512 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 06:20:21,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:21,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033806187] [2023-12-25 06:20:21,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033806187] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:21,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:21,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2023-12-25 06:20:21,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836555832] [2023-12-25 06:20:21,513 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:21,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:20:21,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:21,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:20:21,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:20:21,514 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 06:20:21,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:21,666 INFO L93 Difference]: Finished difference Result 107 states and 251 transitions. [2023-12-25 06:20:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 06:20:21,667 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 06:20:21,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:21,668 INFO L225 Difference]: With dead ends: 107 [2023-12-25 06:20:21,668 INFO L226 Difference]: Without dead ends: 60 [2023-12-25 06:20:21,669 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 06:20:21,670 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:21,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 181 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 06:20:21,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-25 06:20:21,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-25 06:20:21,679 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 06:20:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 119 transitions. [2023-12-25 06:20:21,680 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 119 transitions. Word has length 46 [2023-12-25 06:20:21,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:21,680 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 119 transitions. [2023-12-25 06:20:21,680 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 06:20:21,681 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 119 transitions. [2023-12-25 06:20:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-25 06:20:21,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:21,682 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 06:20:21,686 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 06:20:21,899 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 06:20:21,900 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:21,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:21,900 INFO L85 PathProgramCache]: Analyzing trace with hash 82175210, now seen corresponding path program 3 times [2023-12-25 06:20:21,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:21,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774927748] [2023-12-25 06:20:21,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:21,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:21,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:21,902 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 06:20:21,945 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 06:20:21,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-25 06:20:21,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:21,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 06:20:21,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:22,029 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 06:20:22,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:22,168 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 06:20:22,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:22,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774927748] [2023-12-25 06:20:22,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774927748] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:22,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:22,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-25 06:20:22,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559672690] [2023-12-25 06:20:22,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:22,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 06:20:22,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:22,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 06:20:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-25 06:20:22,170 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 06:20:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:22,269 INFO L93 Difference]: Finished difference Result 82 states and 162 transitions. [2023-12-25 06:20:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 06:20:22,270 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 06:20:22,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:22,271 INFO L225 Difference]: With dead ends: 82 [2023-12-25 06:20:22,271 INFO L226 Difference]: Without dead ends: 78 [2023-12-25 06:20:22,271 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 06:20:22,272 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 06:20:22,272 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 06:20:22,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-25 06:20:22,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2023-12-25 06:20:22,282 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 06:20:22,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 119 transitions. [2023-12-25 06:20:22,283 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 119 transitions. Word has length 57 [2023-12-25 06:20:22,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:22,283 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 119 transitions. [2023-12-25 06:20:22,284 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 06:20:22,284 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 119 transitions. [2023-12-25 06:20:22,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-25 06:20:22,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:22,297 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 06:20:22,320 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 06:20:22,500 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 06:20:22,500 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:22,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:22,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1783295408, now seen corresponding path program 2 times [2023-12-25 06:20:22,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:22,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250827305] [2023-12-25 06:20:22,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:22,501 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 06:20:22,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:22,502 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 06:20:22,507 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 06:20:22,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:22,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:22,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:20:22,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:22,680 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 06:20:22,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:23,324 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 06:20:23,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:23,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250827305] [2023-12-25 06:20:23,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250827305] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:23,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:23,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2023-12-25 06:20:23,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306907991] [2023-12-25 06:20:23,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:23,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 06:20:23,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:23,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 06:20:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:20:23,326 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 06:20:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:23,847 INFO L93 Difference]: Finished difference Result 162 states and 459 transitions. [2023-12-25 06:20:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:20:23,847 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 06:20:23,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:23,849 INFO L225 Difference]: With dead ends: 162 [2023-12-25 06:20:23,849 INFO L226 Difference]: Without dead ends: 104 [2023-12-25 06:20:23,850 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 06:20:23,850 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:23,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 161 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:20:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-25 06:20:23,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2023-12-25 06:20:23,864 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 06:20:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2023-12-25 06:20:23,866 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 58 [2023-12-25 06:20:23,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:23,866 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2023-12-25 06:20:23,866 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 06:20:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2023-12-25 06:20:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-25 06:20:23,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:23,872 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 06:20:23,890 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 06:20:24,075 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 06:20:24,076 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:24,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:24,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2115449141, now seen corresponding path program 2 times [2023-12-25 06:20:24,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:24,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979720827] [2023-12-25 06:20:24,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:24,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:24,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:24,078 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 06:20:24,105 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 06:20:24,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:24,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:24,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-25 06:20:24,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:24,213 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 06:20:24,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:24,568 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 06:20:24,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:24,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979720827] [2023-12-25 06:20:24,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979720827] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:24,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:24,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2023-12-25 06:20:24,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137165508] [2023-12-25 06:20:24,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:24,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 06:20:24,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:24,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 06:20:24,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:20:24,570 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 06:20:24,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:24,791 INFO L93 Difference]: Finished difference Result 208 states and 647 transitions. [2023-12-25 06:20:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 06:20:24,792 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 06:20:24,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:24,794 INFO L225 Difference]: With dead ends: 208 [2023-12-25 06:20:24,794 INFO L226 Difference]: Without dead ends: 112 [2023-12-25 06:20:24,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:20:24,795 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 29 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:24,795 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 06:20:24,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-25 06:20:24,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2023-12-25 06:20:24,826 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 06:20:24,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 275 transitions. [2023-12-25 06:20:24,829 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 275 transitions. Word has length 70 [2023-12-25 06:20:24,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:24,829 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 275 transitions. [2023-12-25 06:20:24,830 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 06:20:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 275 transitions. [2023-12-25 06:20:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-25 06:20:24,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:24,835 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 06:20:24,853 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 06:20:25,037 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 06:20:25,038 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:25,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:25,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1424247677, now seen corresponding path program 3 times [2023-12-25 06:20:25,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:25,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529947715] [2023-12-25 06:20:25,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:25,039 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 06:20:25,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:25,040 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 06:20:25,054 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 06:20:25,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-25 06:20:25,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:25,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 06:20:25,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:25,179 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 06:20:25,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:25,813 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 06:20:25,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:25,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529947715] [2023-12-25 06:20:25,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529947715] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:25,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:25,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-25 06:20:25,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033319045] [2023-12-25 06:20:25,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:25,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:20:25,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:25,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:20:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:20:25,816 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 06:20:26,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:26,247 INFO L93 Difference]: Finished difference Result 222 states and 707 transitions. [2023-12-25 06:20:26,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:20:26,248 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 06:20:26,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:26,249 INFO L225 Difference]: With dead ends: 222 [2023-12-25 06:20:26,249 INFO L226 Difference]: Without dead ends: 115 [2023-12-25 06:20:26,251 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 06:20:26,251 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:26,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 159 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:20:26,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-25 06:20:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-25 06:20:26,261 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 06:20:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 272 transitions. [2023-12-25 06:20:26,264 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 272 transitions. Word has length 142 [2023-12-25 06:20:26,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:26,265 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 272 transitions. [2023-12-25 06:20:26,265 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 06:20:26,265 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 272 transitions. [2023-12-25 06:20:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-25 06:20:26,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:26,267 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 06:20:26,270 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 06:20:26,469 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 06:20:26,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:26,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:26,471 INFO L85 PathProgramCache]: Analyzing trace with hash 705383518, now seen corresponding path program 3 times [2023-12-25 06:20:26,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:26,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667486535] [2023-12-25 06:20:26,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:26,472 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 06:20:26,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:26,473 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 06:20:26,498 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 06:20:26,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-25 06:20:26,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:26,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-25 06:20:26,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:26,545 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 06:20:26,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:20:26,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:26,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667486535] [2023-12-25 06:20:26,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667486535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:20:26,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:20:26,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 06:20:26,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96904828] [2023-12-25 06:20:26,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:20:26,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:20:26,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:26,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:20:26,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:20:26,548 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 06:20:26,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:26,604 INFO L93 Difference]: Finished difference Result 210 states and 572 transitions. [2023-12-25 06:20:26,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:20:26,604 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 06:20:26,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:26,606 INFO L225 Difference]: With dead ends: 210 [2023-12-25 06:20:26,606 INFO L226 Difference]: Without dead ends: 95 [2023-12-25 06:20:26,607 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 06:20:26,609 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 06:20:26,609 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 06:20:26,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-25 06:20:26,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-12-25 06:20:26,616 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 06:20:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 191 transitions. [2023-12-25 06:20:26,617 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 191 transitions. Word has length 94 [2023-12-25 06:20:26,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:26,617 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 191 transitions. [2023-12-25 06:20:26,618 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 06:20:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 191 transitions. [2023-12-25 06:20:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-25 06:20:26,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:26,619 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 06:20:26,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:26,822 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 06:20:26,822 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:26,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:26,823 INFO L85 PathProgramCache]: Analyzing trace with hash -187948887, now seen corresponding path program 1 times [2023-12-25 06:20:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:26,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133721773] [2023-12-25 06:20:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 06:20:26,824 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 06:20:26,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:26,825 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 06:20:26,829 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 06:20:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:26,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-25 06:20:26,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:26,990 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 06:20:26,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:27,506 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 06:20:27,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:27,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133721773] [2023-12-25 06:20:27,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133721773] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:27,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:27,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 18 [2023-12-25 06:20:27,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666250508] [2023-12-25 06:20:27,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:27,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-25 06:20:27,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:27,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-25 06:20:27,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-25 06:20:27,508 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 06:20:27,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:27,762 INFO L93 Difference]: Finished difference Result 199 states and 508 transitions. [2023-12-25 06:20:27,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:20:27,762 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 06:20:27,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:27,764 INFO L225 Difference]: With dead ends: 199 [2023-12-25 06:20:27,764 INFO L226 Difference]: Without dead ends: 106 [2023-12-25 06:20:27,765 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 06:20:27,765 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 06:20:27,765 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 06:20:27,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-12-25 06:20:27,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-12-25 06:20:27,771 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 06:20:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 228 transitions. [2023-12-25 06:20:27,773 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 228 transitions. Word has length 120 [2023-12-25 06:20:27,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:27,773 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 228 transitions. [2023-12-25 06:20:27,773 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 06:20:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 228 transitions. [2023-12-25 06:20:27,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2023-12-25 06:20:27,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:27,777 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 06:20:27,798 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 06:20:27,980 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 06:20:27,981 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:27,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:27,981 INFO L85 PathProgramCache]: Analyzing trace with hash -273803883, now seen corresponding path program 2 times [2023-12-25 06:20:27,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:27,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776664380] [2023-12-25 06:20:27,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:27,982 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 06:20:27,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:27,983 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 06:20:27,985 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 06:20:28,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:28,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:28,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:20:28,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:28,320 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 06:20:28,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:29,966 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 06:20:29,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:29,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776664380] [2023-12-25 06:20:29,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776664380] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:29,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:29,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 20 [2023-12-25 06:20:29,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760508415] [2023-12-25 06:20:29,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:29,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 06:20:29,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:29,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 06:20:29,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:20:29,968 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 06:20:31,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:31,472 INFO L93 Difference]: Finished difference Result 290 states and 861 transitions. [2023-12-25 06:20:31,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-25 06:20:31,473 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 06:20:31,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:31,476 INFO L225 Difference]: With dead ends: 290 [2023-12-25 06:20:31,476 INFO L226 Difference]: Without dead ends: 184 [2023-12-25 06:20:31,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=248, Invalid=1312, Unknown=0, NotChecked=0, Total=1560 [2023-12-25 06:20:31,478 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 122 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:31,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 158 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-25 06:20:31,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-25 06:20:31,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 177. [2023-12-25 06:20:31,494 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 06:20:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 425 transitions. [2023-12-25 06:20:31,497 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 425 transitions. Word has length 368 [2023-12-25 06:20:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:31,497 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 425 transitions. [2023-12-25 06:20:31,497 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 06:20:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 425 transitions. [2023-12-25 06:20:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2023-12-25 06:20:31,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:31,505 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 06:20:31,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:31,711 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 06:20:31,711 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:31,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:31,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1573896179, now seen corresponding path program 3 times [2023-12-25 06:20:31,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:31,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525344761] [2023-12-25 06:20:31,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:31,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:31,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:31,714 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 06:20:31,740 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 06:20:31,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-25 06:20:31,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:31,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-25 06:20:31,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:31,916 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 06:20:31,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:33,523 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 06:20:33,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:33,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525344761] [2023-12-25 06:20:33,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525344761] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:33,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:33,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 16 [2023-12-25 06:20:33,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941301864] [2023-12-25 06:20:33,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:33,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 06:20:33,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 06:20:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-12-25 06:20:33,526 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 06:20:33,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:33,910 INFO L93 Difference]: Finished difference Result 357 states and 1061 transitions. [2023-12-25 06:20:33,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 06:20:33,911 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 06:20:33,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:33,913 INFO L225 Difference]: With dead ends: 357 [2023-12-25 06:20:33,913 INFO L226 Difference]: Without dead ends: 180 [2023-12-25 06:20:33,918 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 06:20:33,918 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 06:20:33,919 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 06:20:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-25 06:20:33,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 172. [2023-12-25 06:20:33,936 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 06:20:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 386 transitions. [2023-12-25 06:20:33,939 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 386 transitions. Word has length 583 [2023-12-25 06:20:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:33,939 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 386 transitions. [2023-12-25 06:20:33,939 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 06:20:33,939 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 386 transitions. [2023-12-25 06:20:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-25 06:20:33,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:33,943 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 06:20:33,948 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 06:20:34,146 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 06:20:34,147 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:34,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:34,147 INFO L85 PathProgramCache]: Analyzing trace with hash -772663922, now seen corresponding path program 4 times [2023-12-25 06:20:34,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:34,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693592719] [2023-12-25 06:20:34,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:20:34,149 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 06:20:34,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:34,150 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 06:20:34,178 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 06:20:34,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:20:34,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:34,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:20:34,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:34,447 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 06:20:34,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:35,378 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 06:20:35,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:35,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693592719] [2023-12-25 06:20:35,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693592719] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:35,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:35,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 20 [2023-12-25 06:20:35,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474137329] [2023-12-25 06:20:35,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:35,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-25 06:20:35,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:35,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-25 06:20:35,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-12-25 06:20:35,380 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 06:20:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:35,716 INFO L93 Difference]: Finished difference Result 364 states and 1111 transitions. [2023-12-25 06:20:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 06:20:35,716 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 06:20:35,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:35,723 INFO L225 Difference]: With dead ends: 364 [2023-12-25 06:20:35,723 INFO L226 Difference]: Without dead ends: 194 [2023-12-25 06:20:35,728 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 06:20:35,728 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 23 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:35,729 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 06:20:35,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-25 06:20:35,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-12-25 06:20:35,749 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 06:20:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 484 transitions. [2023-12-25 06:20:35,752 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 484 transitions. Word has length 358 [2023-12-25 06:20:35,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:35,754 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 484 transitions. [2023-12-25 06:20:35,754 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 06:20:35,754 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 484 transitions. [2023-12-25 06:20:35,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-12-25 06:20:35,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:35,758 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 06:20:35,766 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 06:20:35,964 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 06:20:35,965 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:35,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:35,965 INFO L85 PathProgramCache]: Analyzing trace with hash 992752231, now seen corresponding path program 5 times [2023-12-25 06:20:35,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:35,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377906001] [2023-12-25 06:20:35,966 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:20:35,966 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 06:20:35,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:35,967 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 06:20:35,971 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 06:20:36,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-25 06:20:36,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:36,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 06:20:36,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:36,122 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 06:20:36,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:36,664 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 06:20:36,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:36,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377906001] [2023-12-25 06:20:36,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377906001] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:36,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:36,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2023-12-25 06:20:36,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960856123] [2023-12-25 06:20:36,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:36,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-25 06:20:36,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:36,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-25 06:20:36,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-25 06:20:36,676 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 06:20:36,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:36,894 INFO L93 Difference]: Finished difference Result 544 states and 2463 transitions. [2023-12-25 06:20:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 06:20:36,894 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 06:20:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:36,923 INFO L225 Difference]: With dead ends: 544 [2023-12-25 06:20:36,923 INFO L226 Difference]: Without dead ends: 352 [2023-12-25 06:20:36,928 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 06:20:36,930 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 06:20:36,930 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 06:20:36,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-25 06:20:37,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 318. [2023-12-25 06:20:37,027 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 06:20:37,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 1256 transitions. [2023-12-25 06:20:37,032 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 1256 transitions. Word has length 288 [2023-12-25 06:20:37,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:37,032 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 1256 transitions. [2023-12-25 06:20:37,033 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 06:20:37,033 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 1256 transitions. [2023-12-25 06:20:37,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2023-12-25 06:20:37,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:37,047 INFO L195 NwaCegarLoop]: trace histogram [85, 85, 76, 76, 65, 49, 42, 42, 42, 42, 42, 42, 38, 38, 38, 38, 38, 38, 36, 23, 11, 11, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:37,053 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 06:20:37,250 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 06:20:37,250 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:37,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:37,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1855964065, now seen corresponding path program 6 times [2023-12-25 06:20:37,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:37,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068287795] [2023-12-25 06:20:37,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:20:37,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:37,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:37,252 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 06:20:37,280 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 06:20:37,386 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-25 06:20:37,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:37,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-25 06:20:37,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 33628 backedges. 1750 proven. 5 refuted. 0 times theorem prover too weak. 31873 trivial. 0 not checked. [2023-12-25 06:20:37,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:39,065 INFO L134 CoverageAnalysis]: Checked inductivity of 33628 backedges. 1752 proven. 4 refuted. 0 times theorem prover too weak. 31872 trivial. 0 not checked. [2023-12-25 06:20:39,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:39,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068287795] [2023-12-25 06:20:39,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068287795] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:39,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:39,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-25 06:20:39,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970127719] [2023-12-25 06:20:39,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:39,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 06:20:39,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:39,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 06:20:39,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-25 06:20:39,068 INFO L87 Difference]: Start difference. First operand 318 states and 1256 transitions. Second operand has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-25 06:20:39,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:39,330 INFO L93 Difference]: Finished difference Result 756 states and 3988 transitions. [2023-12-25 06:20:39,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-25 06:20:39,331 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 1003 [2023-12-25 06:20:39,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:39,339 INFO L225 Difference]: With dead ends: 756 [2023-12-25 06:20:39,339 INFO L226 Difference]: Without dead ends: 439 [2023-12-25 06:20:39,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2011 GetRequests, 1992 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:20:39,348 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 30 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:39,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 121 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 06:20:39,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2023-12-25 06:20:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 319. [2023-12-25 06:20:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 172 states have (on average 1.0813953488372092) internal successors, (186), 174 states have internal predecessors, (186), 77 states have call successors, (77), 14 states have call predecessors, (77), 69 states have return successors, (1053), 130 states have call predecessors, (1053), 77 states have call successors, (1053) [2023-12-25 06:20:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 1316 transitions. [2023-12-25 06:20:39,432 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 1316 transitions. Word has length 1003 [2023-12-25 06:20:39,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:39,432 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 1316 transitions. [2023-12-25 06:20:39,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 6 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-25 06:20:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 1316 transitions. [2023-12-25 06:20:39,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2023-12-25 06:20:39,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:39,461 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 72, 72, 65, 61, 54, 54, 54, 54, 54, 54, 48, 36, 36, 36, 36, 36, 36, 12, 11, 7, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:39,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-25 06:20:39,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:39,674 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:39,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1806537176, now seen corresponding path program 7 times [2023-12-25 06:20:39,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:39,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403759474] [2023-12-25 06:20:39,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:20:39,675 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 06:20:39,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:39,676 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:20:39,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-25 06:20:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:20:40,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 1577 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:20:40,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:40,380 INFO L134 CoverageAnalysis]: Checked inductivity of 43159 backedges. 491 proven. 3345 refuted. 0 times theorem prover too weak. 39323 trivial. 0 not checked. [2023-12-25 06:20:40,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 43159 backedges. 491 proven. 3385 refuted. 0 times theorem prover too weak. 39283 trivial. 0 not checked. [2023-12-25 06:20:44,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:44,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403759474] [2023-12-25 06:20:44,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403759474] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:44,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:44,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21] total 24 [2023-12-25 06:20:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065852153] [2023-12-25 06:20:44,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:44,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 06:20:44,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:44,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 06:20:44,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:20:44,129 INFO L87 Difference]: Start difference. First operand 319 states and 1316 transitions. Second operand has 24 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 24 states have internal predecessors, (69), 21 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 10 states have call predecessors, (30), 21 states have call successors, (30) [2023-12-25 06:20:46,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:46,343 INFO L93 Difference]: Finished difference Result 844 states and 4719 transitions. [2023-12-25 06:20:46,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-25 06:20:46,344 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 1112 [2023-12-25 06:20:46,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:46,354 INFO L225 Difference]: With dead ends: 844 [2023-12-25 06:20:46,354 INFO L226 Difference]: Without dead ends: 523 [2023-12-25 06:20:46,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2256 GetRequests, 2200 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 06:20:46,365 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 142 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:46,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 239 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-25 06:20:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-25 06:20:46,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 451. [2023-12-25 06:20:46,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 248 states have (on average 1.1008064516129032) internal successors, (273), 247 states have internal predecessors, (273), 108 states have call successors, (108), 25 states have call predecessors, (108), 94 states have return successors, (1424), 178 states have call predecessors, (1424), 108 states have call successors, (1424) [2023-12-25 06:20:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1805 transitions. [2023-12-25 06:20:46,427 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1805 transitions. Word has length 1112 [2023-12-25 06:20:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:46,427 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 1805 transitions. [2023-12-25 06:20:46,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 24 states have internal predecessors, (69), 21 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 10 states have call predecessors, (30), 21 states have call successors, (30) [2023-12-25 06:20:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1805 transitions. [2023-12-25 06:20:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1769 [2023-12-25 06:20:46,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:46,497 INFO L195 NwaCegarLoop]: trace histogram [165, 165, 122, 122, 106, 85, 82, 82, 82, 82, 82, 82, 80, 61, 61, 61, 61, 61, 61, 24, 19, 16, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:46,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:46,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:46,713 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:46,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:46,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1910233771, now seen corresponding path program 8 times [2023-12-25 06:20:46,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:46,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593165945] [2023-12-25 06:20:46,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:20:46,719 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 06:20:46,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:46,721 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:20:46,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-25 06:20:47,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:20:47,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:47,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 2498 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:20:47,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 107822 backedges. 787 proven. 5488 refuted. 0 times theorem prover too weak. 101547 trivial. 0 not checked. [2023-12-25 06:20:47,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 107822 backedges. 787 proven. 5532 refuted. 0 times theorem prover too weak. 101503 trivial. 0 not checked. [2023-12-25 06:20:52,288 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:52,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593165945] [2023-12-25 06:20:52,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593165945] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:52,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:52,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21] total 24 [2023-12-25 06:20:52,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227195340] [2023-12-25 06:20:52,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:52,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-25 06:20:52,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-25 06:20:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-12-25 06:20:52,291 INFO L87 Difference]: Start difference. First operand 451 states and 1805 transitions. Second operand has 24 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 24 states have internal predecessors, (70), 21 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 10 states have call predecessors, (30), 21 states have call successors, (30) [2023-12-25 06:20:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:52,769 INFO L93 Difference]: Finished difference Result 1018 states and 5682 transitions. [2023-12-25 06:20:52,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 06:20:52,770 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 1768 [2023-12-25 06:20:52,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:52,784 INFO L225 Difference]: With dead ends: 1018 [2023-12-25 06:20:52,784 INFO L226 Difference]: Without dead ends: 569 [2023-12-25 06:20:52,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3543 GetRequests, 3512 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 06:20:52,794 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 31 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:52,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 463 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:20:52,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2023-12-25 06:20:52,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 515. [2023-12-25 06:20:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 280 states have (on average 1.0892857142857142) internal successors, (305), 279 states have internal predecessors, (305), 124 states have call successors, (124), 25 states have call predecessors, (124), 110 states have return successors, (1934), 210 states have call predecessors, (1934), 124 states have call successors, (1934) [2023-12-25 06:20:52,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 2363 transitions. [2023-12-25 06:20:52,916 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 2363 transitions. Word has length 1768 [2023-12-25 06:20:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:52,918 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 2363 transitions. [2023-12-25 06:20:52,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 24 states have internal predecessors, (70), 21 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 10 states have call predecessors, (30), 21 states have call successors, (30) [2023-12-25 06:20:52,918 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 2363 transitions. [2023-12-25 06:20:52,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1407 [2023-12-25 06:20:52,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:52,947 INFO L195 NwaCegarLoop]: trace histogram [137, 137, 92, 92, 84, 78, 68, 68, 68, 68, 68, 68, 59, 46, 46, 46, 46, 46, 46, 16, 13, 8, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:52,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:53,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:53,171 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:53,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:53,171 INFO L85 PathProgramCache]: Analyzing trace with hash 385147507, now seen corresponding path program 9 times [2023-12-25 06:20:53,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:53,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [414302707] [2023-12-25 06:20:53,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:20:53,173 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 06:20:53,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:53,174 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:20:53,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-25 06:20:53,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-25 06:20:53,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:53,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 06:20:53,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 69144 backedges. 2274 proven. 0 refuted. 0 times theorem prover too weak. 66870 trivial. 0 not checked. [2023-12-25 06:20:53,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 06:20:53,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:53,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [414302707] [2023-12-25 06:20:53,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [414302707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 06:20:53,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 06:20:53,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 06:20:53,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296456395] [2023-12-25 06:20:53,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 06:20:53,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-25 06:20:53,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:53,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-25 06:20:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-25 06:20:53,407 INFO L87 Difference]: Start difference. First operand 515 states and 2363 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-25 06:20:53,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:53,486 INFO L93 Difference]: Finished difference Result 776 states and 3919 transitions. [2023-12-25 06:20:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 06:20:53,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 1406 [2023-12-25 06:20:53,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:53,491 INFO L225 Difference]: With dead ends: 776 [2023-12-25 06:20:53,491 INFO L226 Difference]: Without dead ends: 239 [2023-12-25 06:20:53,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1406 GetRequests, 1401 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 06:20:53,502 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:53,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 64 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 06:20:53,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-25 06:20:53,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 222. [2023-12-25 06:20:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 128 states have (on average 1.078125) internal successors, (138), 127 states have internal predecessors, (138), 50 states have call successors, (50), 15 states have call predecessors, (50), 43 states have return successors, (345), 79 states have call predecessors, (345), 50 states have call successors, (345) [2023-12-25 06:20:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 533 transitions. [2023-12-25 06:20:53,533 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 533 transitions. Word has length 1406 [2023-12-25 06:20:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:53,533 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 533 transitions. [2023-12-25 06:20:53,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-25 06:20:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 533 transitions. [2023-12-25 06:20:53,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1186 [2023-12-25 06:20:53,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:53,545 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 93, 93, 79, 74, 47, 47, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 33, 27, 19, 15, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:53,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:53,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:53,749 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:53,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:53,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1914028181, now seen corresponding path program 10 times [2023-12-25 06:20:53,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:53,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303083190] [2023-12-25 06:20:53,750 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:20:53,750 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 06:20:53,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:53,765 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:20:53,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-25 06:20:54,198 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:20:54,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:54,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-25 06:20:54,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 46726 backedges. 533 proven. 4043 refuted. 0 times theorem prover too weak. 42150 trivial. 0 not checked. [2023-12-25 06:20:54,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:20:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 46726 backedges. 533 proven. 4099 refuted. 0 times theorem prover too weak. 42094 trivial. 0 not checked. [2023-12-25 06:20:57,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:20:57,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303083190] [2023-12-25 06:20:57,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303083190] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:20:57,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:20:57,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23] total 26 [2023-12-25 06:20:57,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619148197] [2023-12-25 06:20:57,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:20:57,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 06:20:57,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:20:57,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 06:20:57,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2023-12-25 06:20:57,549 INFO L87 Difference]: Start difference. First operand 222 states and 533 transitions. Second operand has 26 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 23 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 11 states have call predecessors, (33), 23 states have call successors, (33) [2023-12-25 06:20:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:20:58,071 INFO L93 Difference]: Finished difference Result 501 states and 1783 transitions. [2023-12-25 06:20:58,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 06:20:58,072 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 1185 [2023-12-25 06:20:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:20:58,077 INFO L225 Difference]: With dead ends: 501 [2023-12-25 06:20:58,077 INFO L226 Difference]: Without dead ends: 281 [2023-12-25 06:20:58,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2378 GetRequests, 2344 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 06:20:58,079 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 51 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:20:58,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 513 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:20:58,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-25 06:20:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 260. [2023-12-25 06:20:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 148 states have (on average 1.0675675675675675) internal successors, (158), 147 states have internal predecessors, (158), 58 states have call successors, (58), 15 states have call predecessors, (58), 53 states have return successors, (537), 97 states have call predecessors, (537), 58 states have call successors, (537) [2023-12-25 06:20:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 753 transitions. [2023-12-25 06:20:58,110 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 753 transitions. Word has length 1185 [2023-12-25 06:20:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:20:58,111 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 753 transitions. [2023-12-25 06:20:58,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 23 states have call successors, (26), 1 states have call predecessors, (26), 11 states have return successors, (33), 11 states have call predecessors, (33), 23 states have call successors, (33) [2023-12-25 06:20:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 753 transitions. [2023-12-25 06:20:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2296 [2023-12-25 06:20:58,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:20:58,141 INFO L195 NwaCegarLoop]: trace histogram [188, 188, 175, 175, 154, 141, 94, 94, 94, 94, 94, 94, 87, 87, 87, 87, 87, 87, 67, 47, 34, 34, 1, 1, 1, 1, 1, 1] [2023-12-25 06:20:58,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-25 06:20:58,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:20:58,355 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:20:58,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:20:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1875679297, now seen corresponding path program 11 times [2023-12-25 06:20:58,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:20:58,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204197844] [2023-12-25 06:20:58,357 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:20:58,357 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 06:20:58,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:20:58,358 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:20:58,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-25 06:20:58,885 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2023-12-25 06:20:58,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:20:58,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-25 06:20:58,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:20:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 177199 backedges. 89717 proven. 2454 refuted. 0 times theorem prover too weak. 85028 trivial. 0 not checked. [2023-12-25 06:20:59,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 177199 backedges. 3010 proven. 9051 refuted. 0 times theorem prover too weak. 165138 trivial. 0 not checked. [2023-12-25 06:21:05,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:05,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204197844] [2023-12-25 06:21:05,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204197844] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:05,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:05,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28] total 35 [2023-12-25 06:21:05,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400569995] [2023-12-25 06:21:05,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:05,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-25 06:21:05,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:05,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-25 06:21:05,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 06:21:05,084 INFO L87 Difference]: Start difference. First operand 260 states and 753 transitions. Second operand has 35 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 29 states have call successors, (39), 2 states have call predecessors, (39), 14 states have return successors, (48), 15 states have call predecessors, (48), 29 states have call successors, (48) [2023-12-25 06:21:06,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:06,918 INFO L93 Difference]: Finished difference Result 522 states and 1875 transitions. [2023-12-25 06:21:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-25 06:21:06,919 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 29 states have call successors, (39), 2 states have call predecessors, (39), 14 states have return successors, (48), 15 states have call predecessors, (48), 29 states have call successors, (48) Word has length 2295 [2023-12-25 06:21:06,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:06,922 INFO L225 Difference]: With dead ends: 522 [2023-12-25 06:21:06,922 INFO L226 Difference]: Without dead ends: 248 [2023-12-25 06:21:06,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4612 GetRequests, 4555 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=543, Invalid=2879, Unknown=0, NotChecked=0, Total=3422 [2023-12-25 06:21:06,926 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 101 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:06,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 569 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-25 06:21:06,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-25 06:21:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 230. [2023-12-25 06:21:06,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 139 states have (on average 1.064748201438849) internal successors, (148), 137 states have internal predecessors, (148), 48 states have call successors, (48), 19 states have call predecessors, (48), 42 states have return successors, (355), 73 states have call predecessors, (355), 48 states have call successors, (355) [2023-12-25 06:21:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 551 transitions. [2023-12-25 06:21:07,018 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 551 transitions. Word has length 2295 [2023-12-25 06:21:07,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:07,018 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 551 transitions. [2023-12-25 06:21:07,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 3.090909090909091) internal successors, (102), 33 states have internal predecessors, (102), 29 states have call successors, (39), 2 states have call predecessors, (39), 14 states have return successors, (48), 15 states have call predecessors, (48), 29 states have call successors, (48) [2023-12-25 06:21:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 551 transitions. [2023-12-25 06:21:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1449 [2023-12-25 06:21:07,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:07,032 INFO L195 NwaCegarLoop]: trace histogram [117, 117, 112, 112, 93, 92, 58, 58, 58, 58, 58, 58, 56, 56, 56, 56, 56, 56, 37, 34, 24, 20, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:07,080 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 (25)] Ended with exit code 0 [2023-12-25 06:21:07,248 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 06:21:07,249 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:07,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:07,250 INFO L85 PathProgramCache]: Analyzing trace with hash -551309345, now seen corresponding path program 12 times [2023-12-25 06:21:07,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:07,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902327170] [2023-12-25 06:21:07,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:21:07,251 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 06:21:07,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:07,252 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 06:21:07,300 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 06:21:07,908 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2023-12-25 06:21:07,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:07,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-25 06:21:07,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:08,126 INFO L134 CoverageAnalysis]: Checked inductivity of 70051 backedges. 1285 proven. 4360 refuted. 0 times theorem prover too weak. 64406 trivial. 0 not checked. [2023-12-25 06:21:08,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 70051 backedges. 1285 proven. 4416 refuted. 0 times theorem prover too weak. 64350 trivial. 0 not checked. [2023-12-25 06:21:10,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:10,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902327170] [2023-12-25 06:21:10,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902327170] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:10,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:10,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23] total 26 [2023-12-25 06:21:10,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318520412] [2023-12-25 06:21:10,732 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:10,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-25 06:21:10,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:10,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-25 06:21:10,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2023-12-25 06:21:10,735 INFO L87 Difference]: Start difference. First operand 230 states and 551 transitions. Second operand has 26 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 22 states have call successors, (27), 1 states have call predecessors, (27), 11 states have return successors, (34), 13 states have call predecessors, (34), 22 states have call successors, (34) [2023-12-25 06:21:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:11,193 INFO L93 Difference]: Finished difference Result 562 states and 2311 transitions. [2023-12-25 06:21:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 06:21:11,193 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 22 states have call successors, (27), 1 states have call predecessors, (27), 11 states have return successors, (34), 13 states have call predecessors, (34), 22 states have call successors, (34) Word has length 1448 [2023-12-25 06:21:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:11,214 INFO L225 Difference]: With dead ends: 562 [2023-12-25 06:21:11,214 INFO L226 Difference]: Without dead ends: 334 [2023-12-25 06:21:11,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2904 GetRequests, 2870 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 06:21:11,218 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 16 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:11,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 564 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:21:11,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-12-25 06:21:11,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 301. [2023-12-25 06:21:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 177 states have (on average 1.0508474576271187) internal successors, (186), 175 states have internal predecessors, (186), 62 states have call successors, (62), 19 states have call predecessors, (62), 61 states have return successors, (683), 106 states have call predecessors, (683), 62 states have call successors, (683) [2023-12-25 06:21:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 931 transitions. [2023-12-25 06:21:11,280 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 931 transitions. Word has length 1448 [2023-12-25 06:21:11,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:11,280 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 931 transitions. [2023-12-25 06:21:11,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.125) internal successors, (75), 26 states have internal predecessors, (75), 22 states have call successors, (27), 1 states have call predecessors, (27), 11 states have return successors, (34), 13 states have call predecessors, (34), 22 states have call successors, (34) [2023-12-25 06:21:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 931 transitions. [2023-12-25 06:21:11,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1285 [2023-12-25 06:21:11,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:11,293 INFO L195 NwaCegarLoop]: trace histogram [103, 103, 100, 100, 83, 81, 51, 51, 51, 51, 51, 51, 50, 50, 50, 50, 50, 50, 33, 30, 20, 19, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:11,316 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 06:21:11,500 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 06:21:11,500 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:11,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:11,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1367053719, now seen corresponding path program 13 times [2023-12-25 06:21:11,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:11,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420931253] [2023-12-25 06:21:11,502 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:21:11,502 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 06:21:11,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:11,517 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 06:21:11,567 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 06:21:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:21:12,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 06:21:12,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:12,259 INFO L134 CoverageAnalysis]: Checked inductivity of 54955 backedges. 722 proven. 4746 refuted. 0 times theorem prover too weak. 49487 trivial. 0 not checked. [2023-12-25 06:21:12,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 54955 backedges. 722 proven. 4816 refuted. 0 times theorem prover too weak. 49417 trivial. 0 not checked. [2023-12-25 06:21:14,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:14,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420931253] [2023-12-25 06:21:14,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420931253] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:14,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:14,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25] total 28 [2023-12-25 06:21:14,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742442506] [2023-12-25 06:21:14,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:14,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 06:21:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:14,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 06:21:14,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2023-12-25 06:21:14,646 INFO L87 Difference]: Start difference. First operand 301 states and 931 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 06:21:15,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:15,295 INFO L93 Difference]: Finished difference Result 648 states and 3046 transitions. [2023-12-25 06:21:15,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:21:15,296 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 1284 [2023-12-25 06:21:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:15,303 INFO L225 Difference]: With dead ends: 648 [2023-12-25 06:21:15,303 INFO L226 Difference]: Without dead ends: 349 [2023-12-25 06:21:15,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2577 GetRequests, 2540 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 06:21:15,307 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 44 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:15,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 549 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:21:15,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-12-25 06:21:15,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 336. [2023-12-25 06:21:15,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 195 states have (on average 1.0461538461538462) internal successors, (204), 193 states have internal predecessors, (204), 70 states have call successors, (70), 19 states have call predecessors, (70), 70 states have return successors, (852), 123 states have call predecessors, (852), 70 states have call successors, (852) [2023-12-25 06:21:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1126 transitions. [2023-12-25 06:21:15,366 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1126 transitions. Word has length 1284 [2023-12-25 06:21:15,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:15,367 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 1126 transitions. [2023-12-25 06:21:15,367 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 06:21:15,367 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1126 transitions. [2023-12-25 06:21:15,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3708 [2023-12-25 06:21:15,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:15,444 INFO L195 NwaCegarLoop]: trace histogram [294, 294, 293, 293, 239, 236, 147, 147, 147, 147, 147, 147, 146, 146, 146, 146, 146, 146, 93, 89, 57, 55, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:15,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-25 06:21:15,650 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 06:21:15,651 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:15,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:15,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1657276767, now seen corresponding path program 14 times [2023-12-25 06:21:15,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:15,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721603436] [2023-12-25 06:21:15,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:21:15,654 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 06:21:15,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:15,662 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 06:21:15,666 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 06:21:17,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:21:17,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:17,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 5187 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-25 06:21:17,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 463515 backedges. 2589 proven. 16792 refuted. 0 times theorem prover too weak. 444134 trivial. 0 not checked. [2023-12-25 06:21:17,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 463515 backedges. 2589 proven. 16894 refuted. 0 times theorem prover too weak. 444032 trivial. 0 not checked. [2023-12-25 06:21:26,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:26,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721603436] [2023-12-25 06:21:26,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721603436] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:26,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:26,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29] total 32 [2023-12-25 06:21:26,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888539024] [2023-12-25 06:21:26,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:26,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-25 06:21:26,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-25 06:21:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2023-12-25 06:21:26,577 INFO L87 Difference]: Start difference. First operand 336 states and 1126 transitions. Second operand has 32 states, 30 states have (on average 3.0) internal successors, (90), 32 states have internal predecessors, (90), 29 states have call successors, (32), 1 states have call predecessors, (32), 14 states have return successors, (42), 14 states have call predecessors, (42), 29 states have call successors, (42) [2023-12-25 06:21:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:27,316 INFO L93 Difference]: Finished difference Result 718 states and 3687 transitions. [2023-12-25 06:21:27,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 06:21:27,317 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 3707 [2023-12-25 06:21:27,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:27,326 INFO L225 Difference]: With dead ends: 718 [2023-12-25 06:21:27,326 INFO L226 Difference]: Without dead ends: 384 [2023-12-25 06:21:27,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7425 GetRequests, 7382 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=225, Invalid=1755, Unknown=0, NotChecked=0, Total=1980 [2023-12-25 06:21:27,332 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 58 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:27,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 704 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:21:27,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-25 06:21:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 371. [2023-12-25 06:21:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 213 states have (on average 1.0422535211267605) internal successors, (222), 211 states have internal predecessors, (222), 78 states have call successors, (78), 19 states have call predecessors, (78), 79 states have return successors, (1021), 140 states have call predecessors, (1021), 78 states have call successors, (1021) [2023-12-25 06:21:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1321 transitions. [2023-12-25 06:21:27,464 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1321 transitions. Word has length 3707 [2023-12-25 06:21:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:27,465 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 1321 transitions. [2023-12-25 06:21:27,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 3.0) internal successors, (90), 32 states have internal predecessors, (90), 29 states have call successors, (32), 1 states have call predecessors, (32), 14 states have return successors, (42), 14 states have call predecessors, (42), 29 states have call successors, (42) [2023-12-25 06:21:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1321 transitions. [2023-12-25 06:21:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3682 [2023-12-25 06:21:27,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:27,543 INFO L195 NwaCegarLoop]: trace histogram [293, 293, 290, 290, 236, 235, 146, 146, 146, 146, 146, 146, 145, 145, 145, 145, 145, 145, 91, 89, 57, 55, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:27,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-25 06:21:27,768 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 06:21:27,768 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:27,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:27,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1136348489, now seen corresponding path program 15 times [2023-12-25 06:21:27,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:27,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855923406] [2023-12-25 06:21:27,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:21:27,771 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 06:21:27,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:27,773 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 06:21:27,775 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 06:21:28,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-12-25 06:21:28,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:28,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:21:28,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 457032 backedges. 11267 proven. 148 refuted. 0 times theorem prover too weak. 445617 trivial. 0 not checked. [2023-12-25 06:21:28,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:21:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 457032 backedges. 11272 proven. 168 refuted. 0 times theorem prover too weak. 445592 trivial. 0 not checked. [2023-12-25 06:21:36,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:21:36,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855923406] [2023-12-25 06:21:36,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855923406] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:21:36,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:21:36,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 21 [2023-12-25 06:21:36,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141736423] [2023-12-25 06:21:36,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:21:36,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-25 06:21:36,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:21:36,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-25 06:21:36,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:21:36,163 INFO L87 Difference]: Start difference. First operand 371 states and 1321 transitions. Second operand has 21 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 11 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (27), 16 states have call predecessors, (27), 11 states have call successors, (27) [2023-12-25 06:21:36,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:21:36,623 INFO L93 Difference]: Finished difference Result 1171 states and 8412 transitions. [2023-12-25 06:21:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:21:36,623 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 11 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (27), 16 states have call predecessors, (27), 11 states have call successors, (27) Word has length 3681 [2023-12-25 06:21:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:21:36,653 INFO L225 Difference]: With dead ends: 1171 [2023-12-25 06:21:36,654 INFO L226 Difference]: Without dead ends: 801 [2023-12-25 06:21:36,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7370 GetRequests, 7341 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:21:36,667 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 68 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:21:36,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 303 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:21:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2023-12-25 06:21:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 730. [2023-12-25 06:21:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 413 states have (on average 1.0242130750605327) internal successors, (423), 411 states have internal predecessors, (423), 140 states have call successors, (140), 21 states have call predecessors, (140), 176 states have return successors, (3453), 297 states have call predecessors, (3453), 140 states have call successors, (3453) [2023-12-25 06:21:37,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 4016 transitions. [2023-12-25 06:21:37,002 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 4016 transitions. Word has length 3681 [2023-12-25 06:21:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:21:37,003 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 4016 transitions. [2023-12-25 06:21:37,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 11 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (27), 16 states have call predecessors, (27), 11 states have call successors, (27) [2023-12-25 06:21:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 4016 transitions. [2023-12-25 06:21:37,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10824 [2023-12-25 06:21:37,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:21:37,729 INFO L195 NwaCegarLoop]: trace histogram [866, 866, 849, 849, 711, 676, 433, 433, 433, 433, 433, 433, 424, 424, 424, 424, 424, 424, 287, 243, 173, 155, 1, 1, 1, 1, 1, 1] [2023-12-25 06:21:37,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-25 06:21:37,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:21:37,935 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:21:37,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:21:37,937 INFO L85 PathProgramCache]: Analyzing trace with hash 607512601, now seen corresponding path program 16 times [2023-12-25 06:21:37,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:21:37,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903091605] [2023-12-25 06:21:37,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-25 06:21:37,942 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 06:21:37,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:21:37,943 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:21:37,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-25 06:21:41,806 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-25 06:21:41,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:21:42,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 15123 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-25 06:21:42,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:21:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3968251 backedges. 3810 proven. 49175 refuted. 0 times theorem prover too weak. 3915266 trivial. 0 not checked. [2023-12-25 06:21:42,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:22:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3968251 backedges. 3810 proven. 49260 refuted. 0 times theorem prover too weak. 3915181 trivial. 0 not checked. [2023-12-25 06:22:02,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:22:02,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903091605] [2023-12-25 06:22:02,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903091605] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:22:02,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:22:02,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27] total 30 [2023-12-25 06:22:02,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423908166] [2023-12-25 06:22:02,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:22:02,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-25 06:22:02,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:22:02,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-25 06:22:02,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2023-12-25 06:22:02,488 INFO L87 Difference]: Start difference. First operand 730 states and 4016 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 06:22:03,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:22:03,143 INFO L93 Difference]: Finished difference Result 1550 states and 13856 transitions. [2023-12-25 06:22:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-25 06:22:03,143 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 10823 [2023-12-25 06:22:03,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:22:03,187 INFO L225 Difference]: With dead ends: 1550 [2023-12-25 06:22:03,188 INFO L226 Difference]: Without dead ends: 822 [2023-12-25 06:22:03,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21656 GetRequests, 21616 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 06:22:03,212 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 48 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 06:22:03,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 623 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 06:22:03,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-12-25 06:22:03,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 794. [2023-12-25 06:22:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 447 states have (on average 1.0223713646532437) internal successors, (457), 445 states have internal predecessors, (457), 153 states have call successors, (153), 21 states have call predecessors, (153), 193 states have return successors, (4679), 327 states have call predecessors, (4679), 153 states have call successors, (4679) [2023-12-25 06:22:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 5289 transitions. [2023-12-25 06:22:03,548 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 5289 transitions. Word has length 10823 [2023-12-25 06:22:03,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:22:03,552 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 5289 transitions. [2023-12-25 06:22:03,552 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 06:22:03,552 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 5289 transitions. [2023-12-25 06:22:04,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15330 [2023-12-25 06:22:04,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:22:04,961 INFO L195 NwaCegarLoop]: trace histogram [1226, 1226, 1203, 1203, 991, 975, 613, 613, 613, 613, 613, 613, 601, 601, 601, 601, 601, 601, 390, 362, 235, 228, 1, 1, 1, 1, 1, 1] [2023-12-25 06:22:05,070 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 06:22:05,184 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 06:22:05,184 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:22:05,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:22:05,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1146815548, now seen corresponding path program 17 times [2023-12-25 06:22:05,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:22:05,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912070768] [2023-12-25 06:22:05,194 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-25 06:22:05,194 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 06:22:05,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:22:05,214 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 06:22:05,246 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 06:22:06,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2023-12-25 06:22:06,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:22:06,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-25 06:22:06,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:22:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7964716 backedges. 1490085 proven. 1126 refuted. 0 times theorem prover too weak. 6473505 trivial. 0 not checked. [2023-12-25 06:22:07,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:22:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7964716 backedges. 11000 proven. 77102 refuted. 0 times theorem prover too weak. 7876614 trivial. 0 not checked. [2023-12-25 06:22:41,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:22:41,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912070768] [2023-12-25 06:22:41,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912070768] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:22:41,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:22:41,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25] total 31 [2023-12-25 06:22:41,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819665612] [2023-12-25 06:22:41,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:22:41,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-25 06:22:41,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:22:41,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-25 06:22:41,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:22:41,636 INFO L87 Difference]: Start difference. First operand 794 states and 5289 transitions. Second operand has 31 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 29 states have internal predecessors, (97), 26 states have call successors, (35), 2 states have call predecessors, (35), 14 states have return successors, (46), 14 states have call predecessors, (46), 26 states have call successors, (46) [2023-12-25 06:22:42,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:22:42,638 INFO L93 Difference]: Finished difference Result 1669 states and 17410 transitions. [2023-12-25 06:22:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-25 06:22:42,639 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 29 states have internal predecessors, (97), 26 states have call successors, (35), 2 states have call predecessors, (35), 14 states have return successors, (46), 14 states have call predecessors, (46), 26 states have call successors, (46) Word has length 15329 [2023-12-25 06:22:42,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:22:42,686 INFO L225 Difference]: With dead ends: 1669 [2023-12-25 06:22:42,686 INFO L226 Difference]: Without dead ends: 874 [2023-12-25 06:22:42,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30671 GetRequests, 30627 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=291, Invalid=1779, Unknown=0, NotChecked=0, Total=2070 [2023-12-25 06:22:42,865 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 53 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 06:22:42,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 686 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 06:22:42,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2023-12-25 06:22:43,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 718. [2023-12-25 06:22:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 401 states have (on average 1.0249376558603491) internal successors, (411), 399 states have internal predecessors, (411), 146 states have call successors, (146), 21 states have call predecessors, (146), 170 states have return successors, (4020), 297 states have call predecessors, (4020), 146 states have call successors, (4020) [2023-12-25 06:22:43,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 4577 transitions. [2023-12-25 06:22:43,242 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 4577 transitions. Word has length 15329 [2023-12-25 06:22:43,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:22:43,243 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 4577 transitions. [2023-12-25 06:22:43,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 29 states have internal predecessors, (97), 26 states have call successors, (35), 2 states have call predecessors, (35), 14 states have return successors, (46), 14 states have call predecessors, (46), 26 states have call successors, (46) [2023-12-25 06:22:43,244 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 4577 transitions. [2023-12-25 06:22:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11910 [2023-12-25 06:22:44,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:22:44,045 INFO L195 NwaCegarLoop]: trace histogram [950, 950, 937, 937, 774, 753, 475, 475, 475, 475, 475, 475, 468, 468, 468, 468, 468, 468, 306, 278, 184, 176, 1, 1, 1, 1, 1, 1] [2023-12-25 06:22:44,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-12-25 06:22:44,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 06:22:44,248 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:22:44,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:22:44,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1753870756, now seen corresponding path program 18 times [2023-12-25 06:22:44,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:22:44,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177001150] [2023-12-25 06:22:44,255 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-25 06:22:44,256 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 06:22:44,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:22:44,263 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 06:22:44,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-25 06:22:45,752 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2023-12-25 06:22:45,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:22:45,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 06:22:45,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:22:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4805002 backedges. 41706 proven. 227 refuted. 0 times theorem prover too weak. 4763069 trivial. 0 not checked. [2023-12-25 06:22:46,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:23:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4805002 backedges. 41713 proven. 244 refuted. 0 times theorem prover too weak. 4763045 trivial. 0 not checked. [2023-12-25 06:23:10,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:23:10,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177001150] [2023-12-25 06:23:10,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177001150] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:23:10,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:23:10,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 21 [2023-12-25 06:23:10,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930463147] [2023-12-25 06:23:10,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:23:10,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-25 06:23:10,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:23:10,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-25 06:23:10,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-12-25 06:23:10,043 INFO L87 Difference]: Start difference. First operand 718 states and 4577 transitions. Second operand has 21 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 11 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 16 states have call predecessors, (28), 11 states have call successors, (28) [2023-12-25 06:23:10,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:23:10,685 INFO L93 Difference]: Finished difference Result 1879 states and 20534 transitions. [2023-12-25 06:23:10,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-25 06:23:10,686 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 11 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 16 states have call predecessors, (28), 11 states have call successors, (28) Word has length 11909 [2023-12-25 06:23:10,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:23:10,743 INFO L225 Difference]: With dead ends: 1879 [2023-12-25 06:23:10,743 INFO L226 Difference]: Without dead ends: 1160 [2023-12-25 06:23:10,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23826 GetRequests, 23797 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:23:10,770 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 67 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:23:10,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 302 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:23:10,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2023-12-25 06:23:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 970. [2023-12-25 06:23:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 539 states have (on average 1.0148423005565863) internal successors, (547), 537 states have internal predecessors, (547), 191 states have call successors, (191), 21 states have call predecessors, (191), 239 states have return successors, (7010), 411 states have call predecessors, (7010), 191 states have call successors, (7010) [2023-12-25 06:23:11,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 7748 transitions. [2023-12-25 06:23:11,218 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 7748 transitions. Word has length 11909 [2023-12-25 06:23:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:23:11,219 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 7748 transitions. [2023-12-25 06:23:11,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 11 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 16 states have call predecessors, (28), 11 states have call successors, (28) [2023-12-25 06:23:11,219 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 7748 transitions. [2023-12-25 06:23:12,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14169 [2023-12-25 06:23:12,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:23:12,430 INFO L195 NwaCegarLoop]: trace histogram [1130, 1130, 1115, 1115, 917, 900, 565, 565, 565, 565, 565, 565, 557, 557, 557, 557, 557, 557, 360, 335, 215, 213, 1, 1, 1, 1, 1, 1] [2023-12-25 06:23:12,437 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 (32)] Ended with exit code 0 [2023-12-25 06:23:12,638 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 06:23:12,638 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:23:12,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:23:12,640 INFO L85 PathProgramCache]: Analyzing trace with hash 182510591, now seen corresponding path program 19 times [2023-12-25 06:23:12,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:23:12,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82862726] [2023-12-25 06:23:12,649 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-25 06:23:12,649 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 06:23:12,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:23:12,650 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 06:23:12,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-25 06:23:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 06:23:20,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 19793 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-25 06:23:20,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:23:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6802824 backedges. 7432 proven. 56099 refuted. 0 times theorem prover too weak. 6739293 trivial. 0 not checked. [2023-12-25 06:23:20,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:23:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6802824 backedges. 7432 proven. 56169 refuted. 0 times theorem prover too weak. 6739223 trivial. 0 not checked. [2023-12-25 06:23:44,797 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:23:44,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82862726] [2023-12-25 06:23:44,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82862726] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:23:44,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:23:44,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25] total 28 [2023-12-25 06:23:44,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934225820] [2023-12-25 06:23:44,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:23:44,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-25 06:23:44,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:23:44,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-25 06:23:44,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2023-12-25 06:23:44,806 INFO L87 Difference]: Start difference. First operand 970 states and 7748 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 06:23:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:23:45,800 INFO L93 Difference]: Finished difference Result 2583 states and 48732 transitions. [2023-12-25 06:23:45,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 06:23:45,801 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 14168 [2023-12-25 06:23:45,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:23:46,099 INFO L225 Difference]: With dead ends: 2583 [2023-12-25 06:23:46,099 INFO L226 Difference]: Without dead ends: 1615 [2023-12-25 06:23:46,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28345 GetRequests, 28308 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=1301, Unknown=0, NotChecked=0, Total=1482 [2023-12-25 06:23:46,161 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 37 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 06:23:46,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 563 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 06:23:46,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2023-12-25 06:23:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1404. [2023-12-25 06:23:51,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 763 states have (on average 1.0104849279161205) internal successors, (771), 761 states have internal predecessors, (771), 289 states have call successors, (289), 21 states have call predecessors, (289), 351 states have return successors, (12161), 621 states have call predecessors, (12161), 289 states have call successors, (12161) [2023-12-25 06:23:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 13221 transitions. [2023-12-25 06:23:51,242 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 13221 transitions. Word has length 14168 [2023-12-25 06:23:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:23:51,243 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 13221 transitions. [2023-12-25 06:23:51,243 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 06:23:51,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 13221 transitions. [2023-12-25 06:23:54,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24780 [2023-12-25 06:23:54,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:23:54,604 INFO L195 NwaCegarLoop]: trace histogram [1986, 1986, 1941, 1941, 1608, 1569, 993, 993, 993, 993, 993, 993, 970, 970, 970, 970, 970, 970, 638, 576, 378, 372, 1, 1, 1, 1, 1, 1] [2023-12-25 06:23:54,758 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 (33)] Ended with exit code 0 [2023-12-25 06:23:54,824 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 06:23:54,824 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:23:54,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:23:54,826 INFO L85 PathProgramCache]: Analyzing trace with hash -361928046, now seen corresponding path program 20 times [2023-12-25 06:23:54,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:23:54,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799410708] [2023-12-25 06:23:54,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 06:23:54,835 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 06:23:54,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:23:54,836 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 06:23:54,869 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 06:24:09,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 06:24:09,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:24:09,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 34609 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-25 06:24:10,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:24:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 20825103 backedges. 11705 proven. 123303 refuted. 0 times theorem prover too weak. 20690095 trivial. 0 not checked. [2023-12-25 06:24:11,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 06:25:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 20825103 backedges. 11705 proven. 123405 refuted. 0 times theorem prover too weak. 20689993 trivial. 0 not checked. [2023-12-25 06:25:11,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 06:25:11,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799410708] [2023-12-25 06:25:11,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799410708] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 06:25:11,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 06:25:11,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29] total 31 [2023-12-25 06:25:11,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227516376] [2023-12-25 06:25:11,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 06:25:11,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-25 06:25:11,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 06:25:11,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-25 06:25:11,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2023-12-25 06:25:11,436 INFO L87 Difference]: Start difference. First operand 1404 states and 13221 transitions. Second operand has 31 states, 30 states have (on average 3.0) internal successors, (90), 31 states have internal predecessors, (90), 27 states have call successors, (35), 1 states have call predecessors, (35), 14 states have return successors, (45), 19 states have call predecessors, (45), 27 states have call successors, (45) [2023-12-25 06:25:23,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 06:25:23,549 INFO L93 Difference]: Finished difference Result 7923 states and 372374 transitions. [2023-12-25 06:25:23,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-25 06:25:23,550 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.0) internal successors, (90), 31 states have internal predecessors, (90), 27 states have call successors, (35), 1 states have call predecessors, (35), 14 states have return successors, (45), 19 states have call predecessors, (45), 27 states have call successors, (45) Word has length 24779 [2023-12-25 06:25:23,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 06:25:38,917 INFO L225 Difference]: With dead ends: 7923 [2023-12-25 06:25:38,918 INFO L226 Difference]: Without dead ends: 6329 [2023-12-25 06:25:39,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49608 GetRequests, 49527 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1092, Invalid=5714, Unknown=0, NotChecked=0, Total=6806 [2023-12-25 06:25:39,607 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 149 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 06:25:39,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 271 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 06:25:39,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6329 states. [2023-12-25 06:30:22,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6329 to 3446. [2023-12-25 06:30:22,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3446 states, 1664 states have (on average 1.0114182692307692) internal successors, (1683), 1662 states have internal predecessors, (1683), 999 states have call successors, (999), 34 states have call predecessors, (999), 782 states have return successors, (127915), 1749 states have call predecessors, (127915), 999 states have call successors, (127915) [2023-12-25 06:30:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 130597 transitions. [2023-12-25 06:30:24,946 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 130597 transitions. Word has length 24779 [2023-12-25 06:30:24,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 06:30:24,947 INFO L495 AbstractCegarLoop]: Abstraction has 3446 states and 130597 transitions. [2023-12-25 06:30:24,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.0) internal successors, (90), 31 states have internal predecessors, (90), 27 states have call successors, (35), 1 states have call predecessors, (35), 14 states have return successors, (45), 19 states have call predecessors, (45), 27 states have call successors, (45) [2023-12-25 06:30:24,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 130597 transitions. [2023-12-25 06:31:00,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83041 [2023-12-25 06:31:00,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 06:31:00,416 INFO L195 NwaCegarLoop]: trace histogram [6606, 6606, 6555, 6555, 5362, 5289, 3303, 3303, 3303, 3303, 3303, 3303, 3277, 3277, 3277, 3277, 3277, 3277, 2085, 1986, 1266, 1244, 1, 1, 1, 1, 1, 1] [2023-12-25 06:31:00,632 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 (34)] Forcibly destroying the process [2023-12-25 06:31:00,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-25 06:31:00,634 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 06:31:00,634 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 06:31:00,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 06:31:00,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1934779200, now seen corresponding path program 21 times [2023-12-25 06:31:00,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 06:31:00,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173302005] [2023-12-25 06:31:00,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-25 06:31:00,667 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 06:31:00,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 06:31:00,668 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 06:31:00,700 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 06:31:12,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2023-12-25 06:31:12,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 06:31:12,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 2061 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-25 06:31:14,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 06:31:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 234008094 backedges. 4095221 proven. 829 refuted. 0 times theorem prover too weak. 229912044 trivial. 0 not checked. [2023-12-25 06:31:20,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-25 06:34:16,959 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 06:34:16,959 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 06:34:17,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-25 06:34:17,995 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 06:34:18,003 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 06:34:18,196 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 06:34:18,196 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 83041 with TraceHistMax 6606,while TraceCheckSpWp was constructing backward predicates,while TransFormulaUtils was doing sequential composition of 5 TransFormulas,while executing Executor. [2023-12-25 06:34:18,200 INFO L445 BasicCegarLoop]: Path program histogram: [21, 3, 3, 3, 1, 1, 1, 1] [2023-12-25 06:34:18,201 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 06:34:18,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 06:34:18 BoogieIcfgContainer [2023-12-25 06:34:18,202 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 06:34:18,203 INFO L158 Benchmark]: Toolchain (without parser) took 842175.78ms. Allocated memory was 255.9MB in the beginning and 4.7GB in the end (delta: 4.4GB). Free memory was 204.6MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2023-12-25 06:34:18,203 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 212.9MB. Free memory is still 161.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 06:34:18,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.61ms. Allocated memory is still 255.9MB. Free memory was 204.4MB in the beginning and 193.5MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 06:34:18,203 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.29ms. Allocated memory is still 255.9MB. Free memory was 193.5MB in the beginning and 192.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 06:34:18,203 INFO L158 Benchmark]: Boogie Preprocessor took 35.68ms. Allocated memory is still 255.9MB. Free memory was 192.0MB in the beginning and 190.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 06:34:18,203 INFO L158 Benchmark]: RCFGBuilder took 258.80ms. Allocated memory is still 255.9MB. Free memory was 190.2MB in the beginning and 178.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 06:34:18,204 INFO L158 Benchmark]: TraceAbstraction took 841682.89ms. Allocated memory was 255.9MB in the beginning and 4.7GB in the end (delta: 4.4GB). Free memory was 177.9MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2023-12-25 06:34:18,204 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 212.9MB. Free memory is still 161.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 167.61ms. Allocated memory is still 255.9MB. Free memory was 204.4MB in the beginning and 193.5MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.29ms. Allocated memory is still 255.9MB. Free memory was 193.5MB in the beginning and 192.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.68ms. Allocated memory is still 255.9MB. Free memory was 192.0MB in the beginning and 190.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 258.80ms. Allocated memory is still 255.9MB. Free memory was 190.2MB in the beginning and 178.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 841682.89ms. Allocated memory was 255.9MB in the beginning and 4.7GB in the end (delta: 4.4GB). Free memory was 177.9MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 41). Cancelled while NwaCegarLoop was analyzing trace of length 83041 with TraceHistMax 6606,while TraceCheckSpWp was constructing backward predicates,while TransFormulaUtils was doing sequential composition of 5 TransFormulas,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 841.6s, OverallIterations: 34, TraceHistogramMax: 6606, PathProgramHistogramMax: 21, EmptinessCheckTime: 43.4s, AutomataDifference: 45.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1642 SdHoareTripleChecker+Valid, 10.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1374 mSDsluCounter, 9119 SdHoareTripleChecker+Invalid, 8.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8210 mSDsCounter, 1756 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14608 IncrementalHoareTripleChecker+Invalid, 16364 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1756 mSolverCounterUnsat, 909 mSDtfsCounter, 14608 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195275 GetRequests, 194412 SyntacticMatches, 0 SemanticMatches, 863 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4293 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3446occurred in iteration=33, InterpolantAutomatonStates: 522, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 292.9s AutomataMinimizationTime, 33 MinimizatonAttempts, 4010 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.7s SsaConstructionTime, 27.0s SatisfiabilityAnalysisTime, 220.0s InterpolantComputationTime, 98255 NumberOfCodeBlocks, 62598 NumberOfCodeBlocksAsserted, 214 NumberOfCheckSat, 194929 ConstructedInterpolants, 0 QuantifiedInterpolants, 204462 SizeOfPredicates, 203 NumberOfNonLiveVariables, 87764 ConjunctsInSsa, 484 ConjunctsInUnsatCore, 62 InterpolantComputations, 4 PerfectInterpolantSequences, 91126787/91756957 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown