/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 09:17:13,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 09:17:13,971 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 09:17:13,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 09:17:13,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 09:17:13,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 09:17:13,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 09:17:13,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 09:17:13,988 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 09:17:13,988 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 09:17:13,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 09:17:13,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 09:17:13,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 09:17:13,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 09:17:13,990 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 09:17:13,990 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 09:17:13,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 09:17:13,991 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 09:17:13,991 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 09:17:13,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 09:17:13,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 09:17:13,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 09:17:13,992 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 09:17:13,992 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 09:17:13,992 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 09:17:13,993 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 09:17:13,993 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 09:17:13,993 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 09:17:13,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 09:17:13,993 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 09:17:13,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 09:17:13,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 09:17:13,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 09:17:13,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 09:17:13,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 09:17:13,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 09:17:13,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 09:17:13,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 09:17:13,995 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 09:17:13,995 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 09:17:13,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 09:17:13,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 09:17:13,995 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 09:17:13,995 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 09:17:13,996 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 09:17:13,996 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 09:17:13,996 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 09:17:14,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 09:17:14,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 09:17:14,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 09:17:14,152 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 09:17:14,152 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 09:17:14,154 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-12-25 09:17:15,247 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 09:17:15,471 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 09:17:15,471 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-12-25 09:17:15,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20a27068/fa7a8096a58343698e05e7ff7cde4484/FLAG2d4254336 [2023-12-25 09:17:15,506 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20a27068/fa7a8096a58343698e05e7ff7cde4484 [2023-12-25 09:17:15,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 09:17:15,510 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 09:17:15,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 09:17:15,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 09:17:15,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 09:17:15,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:17:15" (1/1) ... [2023-12-25 09:17:15,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67600b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:15, skipping insertion in model container [2023-12-25 09:17:15,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:17:15" (1/1) ... [2023-12-25 09:17:15,585 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 09:17:15,870 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21751,21764] [2023-12-25 09:17:16,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 09:17:16,048 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 09:17:16,139 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[21751,21764] [2023-12-25 09:17:16,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 09:17:16,232 INFO L206 MainTranslator]: Completed translation [2023-12-25 09:17:16,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16 WrapperNode [2023-12-25 09:17:16,234 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 09:17:16,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 09:17:16,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 09:17:16,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 09:17:16,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16" (1/1) ... [2023-12-25 09:17:16,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16" (1/1) ... [2023-12-25 09:17:16,338 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2821 [2023-12-25 09:17:16,338 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 09:17:16,339 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 09:17:16,339 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 09:17:16,339 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 09:17:16,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16" (1/1) ... [2023-12-25 09:17:16,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16" (1/1) ... [2023-12-25 09:17:16,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16" (1/1) ... [2023-12-25 09:17:16,405 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 09:17:16,405 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16" (1/1) ... [2023-12-25 09:17:16,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16" (1/1) ... [2023-12-25 09:17:16,449 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16" (1/1) ... [2023-12-25 09:17:16,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16" (1/1) ... [2023-12-25 09:17:16,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16" (1/1) ... [2023-12-25 09:17:16,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16" (1/1) ... [2023-12-25 09:17:16,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 09:17:16,506 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 09:17:16,507 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 09:17:16,507 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 09:17:16,507 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16" (1/1) ... [2023-12-25 09:17:16,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 09:17:16,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 09:17:16,569 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 09:17:16,611 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 09:17:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 09:17:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 09:17:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 09:17:16,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 09:17:16,835 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 09:17:16,837 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 09:17:18,033 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 09:17:18,074 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 09:17:18,074 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-25 09:17:18,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:17:18 BoogieIcfgContainer [2023-12-25 09:17:18,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 09:17:18,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 09:17:18,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 09:17:18,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 09:17:18,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 09:17:15" (1/3) ... [2023-12-25 09:17:18,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4610c93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:17:18, skipping insertion in model container [2023-12-25 09:17:18,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:17:16" (2/3) ... [2023-12-25 09:17:18,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4610c93b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:17:18, skipping insertion in model container [2023-12-25 09:17:18,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:17:18" (3/3) ... [2023-12-25 09:17:18,080 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-12-25 09:17:18,093 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 09:17:18,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 09:17:18,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 09:17:18,140 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;@5aa94be9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 09:17:18,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 09:17:18,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 734 states, 732 states have (on average 1.8442622950819672) internal successors, (1350), 733 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:18,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-12-25 09:17:18,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:18,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:18,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:18,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:18,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1014936547, now seen corresponding path program 1 times [2023-12-25 09:17:18,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:18,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609318068] [2023-12-25 09:17:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:18,176 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 09:17:18,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:18,178 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 09:17:18,211 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 09:17:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:18,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:17:18,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:18,495 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 09:17:18,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:18,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:18,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609318068] [2023-12-25 09:17:18,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609318068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:18,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:18,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:17:18,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474594071] [2023-12-25 09:17:18,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:18,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:17:18,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:18,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:17:18,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:17:18,567 INFO L87 Difference]: Start difference. First operand has 734 states, 732 states have (on average 1.8442622950819672) internal successors, (1350), 733 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:18,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:18,677 INFO L93 Difference]: Finished difference Result 1105 states and 1979 transitions. [2023-12-25 09:17:18,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:17:18,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2023-12-25 09:17:18,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:18,693 INFO L225 Difference]: With dead ends: 1105 [2023-12-25 09:17:18,693 INFO L226 Difference]: Without dead ends: 909 [2023-12-25 09:17:18,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:17:18,699 INFO L413 NwaCegarLoop]: 1346 mSDtfsCounter, 338 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:18,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 2588 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:17:18,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2023-12-25 09:17:18,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 907. [2023-12-25 09:17:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 906 states have (on average 1.7428256070640176) internal successors, (1579), 906 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1579 transitions. [2023-12-25 09:17:18,795 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1579 transitions. Word has length 203 [2023-12-25 09:17:18,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:18,795 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1579 transitions. [2023-12-25 09:17:18,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:18,796 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1579 transitions. [2023-12-25 09:17:18,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-25 09:17:18,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:18,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:18,805 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 09:17:19,003 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 09:17:19,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:19,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:19,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1480286202, now seen corresponding path program 1 times [2023-12-25 09:17:19,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:19,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462309209] [2023-12-25 09:17:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:19,005 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 09:17:19,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:19,006 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 09:17:19,037 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 09:17:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:19,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:17:19,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:19,379 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 09:17:19,380 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:19,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:19,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462309209] [2023-12-25 09:17:19,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462309209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:19,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:19,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:17:19,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235357968] [2023-12-25 09:17:19,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:19,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:17:19,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:17:19,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:17:19,383 INFO L87 Difference]: Start difference. First operand 907 states and 1579 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:19,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:19,474 INFO L93 Difference]: Finished difference Result 2688 states and 4678 transitions. [2023-12-25 09:17:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:17:19,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-12-25 09:17:19,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:19,482 INFO L225 Difference]: With dead ends: 2688 [2023-12-25 09:17:19,482 INFO L226 Difference]: Without dead ends: 1793 [2023-12-25 09:17:19,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:17:19,484 INFO L413 NwaCegarLoop]: 1280 mSDtfsCounter, 3577 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3577 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:19,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3577 Valid, 2521 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:17:19,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2023-12-25 09:17:19,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1791. [2023-12-25 09:17:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1790 states have (on average 1.7340782122905027) internal successors, (3104), 1790 states have internal predecessors, (3104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 3104 transitions. [2023-12-25 09:17:19,516 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 3104 transitions. Word has length 207 [2023-12-25 09:17:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:19,518 INFO L495 AbstractCegarLoop]: Abstraction has 1791 states and 3104 transitions. [2023-12-25 09:17:19,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:19,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 3104 transitions. [2023-12-25 09:17:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-25 09:17:19,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:19,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:19,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 09:17:19,726 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 09:17:19,726 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:19,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:19,727 INFO L85 PathProgramCache]: Analyzing trace with hash 323010313, now seen corresponding path program 1 times [2023-12-25 09:17:19,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:19,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537701300] [2023-12-25 09:17:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:19,728 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 09:17:19,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:19,729 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 09:17:19,730 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 09:17:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:19,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:17:19,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:19,918 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 09:17:19,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:19,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:19,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537701300] [2023-12-25 09:17:19,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537701300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:19,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:19,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:17:19,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687689812] [2023-12-25 09:17:19,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:19,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:17:19,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:19,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:17:19,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:17:19,920 INFO L87 Difference]: Start difference. First operand 1791 states and 3104 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:19,952 INFO L93 Difference]: Finished difference Result 2479 states and 4279 transitions. [2023-12-25 09:17:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:17:19,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2023-12-25 09:17:19,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:19,958 INFO L225 Difference]: With dead ends: 2479 [2023-12-25 09:17:19,958 INFO L226 Difference]: Without dead ends: 2106 [2023-12-25 09:17:19,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:17:19,960 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 300 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:19,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 2782 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:17:19,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2023-12-25 09:17:19,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2104. [2023-12-25 09:17:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2103 states have (on average 1.72943414170233) internal successors, (3637), 2103 states have internal predecessors, (3637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3637 transitions. [2023-12-25 09:17:19,994 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3637 transitions. Word has length 207 [2023-12-25 09:17:19,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:19,994 INFO L495 AbstractCegarLoop]: Abstraction has 2104 states and 3637 transitions. [2023-12-25 09:17:19,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3637 transitions. [2023-12-25 09:17:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-25 09:17:19,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:19,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:20,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-25 09:17:20,201 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 09:17:20,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:20,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:20,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1077242835, now seen corresponding path program 1 times [2023-12-25 09:17:20,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:20,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086676377] [2023-12-25 09:17:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:20,203 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 09:17:20,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:20,204 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 09:17:20,207 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 09:17:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:20,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:17:20,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:20,632 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 09:17:20,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:20,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:20,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086676377] [2023-12-25 09:17:20,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086676377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:20,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:20,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:17:20,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559612121] [2023-12-25 09:17:20,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:20,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:17:20,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:20,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:17:20,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:17:20,635 INFO L87 Difference]: Start difference. First operand 2104 states and 3637 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:20,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:20,736 INFO L93 Difference]: Finished difference Result 6256 states and 10814 transitions. [2023-12-25 09:17:20,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:17:20,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2023-12-25 09:17:20,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:20,747 INFO L225 Difference]: With dead ends: 6256 [2023-12-25 09:17:20,748 INFO L226 Difference]: Without dead ends: 4165 [2023-12-25 09:17:20,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:17:20,751 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 3300 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3300 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:20,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3300 Valid, 2788 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:17:20,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2023-12-25 09:17:20,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 4163. [2023-12-25 09:17:20,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4163 states, 4162 states have (on average 1.721528111484863) internal successors, (7165), 4162 states have internal predecessors, (7165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4163 states to 4163 states and 7165 transitions. [2023-12-25 09:17:20,838 INFO L78 Accepts]: Start accepts. Automaton has 4163 states and 7165 transitions. Word has length 209 [2023-12-25 09:17:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:20,840 INFO L495 AbstractCegarLoop]: Abstraction has 4163 states and 7165 transitions. [2023-12-25 09:17:20,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4163 states and 7165 transitions. [2023-12-25 09:17:20,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-25 09:17:20,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:20,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:20,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 09:17:21,054 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 09:17:21,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:21,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:21,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1027647104, now seen corresponding path program 1 times [2023-12-25 09:17:21,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:21,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333429936] [2023-12-25 09:17:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:21,058 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 09:17:21,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:21,059 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 09:17:21,076 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 09:17:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:21,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:17:21,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:21,516 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 09:17:21,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:21,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:21,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333429936] [2023-12-25 09:17:21,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333429936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:21,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:21,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:17:21,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127925086] [2023-12-25 09:17:21,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:21,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:17:21,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:21,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:17:21,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:17:21,518 INFO L87 Difference]: Start difference. First operand 4163 states and 7165 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:21,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:21,677 INFO L93 Difference]: Finished difference Result 12376 states and 21302 transitions. [2023-12-25 09:17:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:17:21,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2023-12-25 09:17:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:21,701 INFO L225 Difference]: With dead ends: 12376 [2023-12-25 09:17:21,701 INFO L226 Difference]: Without dead ends: 8243 [2023-12-25 09:17:21,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:17:21,708 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 3269 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3269 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:21,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3269 Valid, 2804 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:17:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8243 states. [2023-12-25 09:17:21,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8243 to 8241. [2023-12-25 09:17:21,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8241 states, 8240 states have (on average 1.7138349514563107) internal successors, (14122), 8240 states have internal predecessors, (14122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8241 states to 8241 states and 14122 transitions. [2023-12-25 09:17:21,888 INFO L78 Accepts]: Start accepts. Automaton has 8241 states and 14122 transitions. Word has length 212 [2023-12-25 09:17:21,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:21,888 INFO L495 AbstractCegarLoop]: Abstraction has 8241 states and 14122 transitions. [2023-12-25 09:17:21,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 8241 states and 14122 transitions. [2023-12-25 09:17:21,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-12-25 09:17:21,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:21,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:21,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 09:17:22,110 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 09:17:22,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:22,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:22,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1074066403, now seen corresponding path program 1 times [2023-12-25 09:17:22,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:22,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775853526] [2023-12-25 09:17:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:22,111 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 09:17:22,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:22,112 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 09:17:22,138 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 09:17:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:22,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:17:22,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:22,494 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 09:17:22,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:22,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:22,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775853526] [2023-12-25 09:17:22,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775853526] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:22,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:22,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:17:22,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645657176] [2023-12-25 09:17:22,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:22,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:17:22,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:22,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:17:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:17:22,496 INFO L87 Difference]: Start difference. First operand 8241 states and 14122 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:22,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:22,644 INFO L93 Difference]: Finished difference Result 24506 states and 42003 transitions. [2023-12-25 09:17:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:17:22,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2023-12-25 09:17:22,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:22,682 INFO L225 Difference]: With dead ends: 24506 [2023-12-25 09:17:22,682 INFO L226 Difference]: Without dead ends: 16326 [2023-12-25 09:17:22,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:17:22,696 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 3257 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3257 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:22,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3257 Valid, 2803 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:17:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16326 states. [2023-12-25 09:17:23,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16326 to 16324. [2023-12-25 09:17:23,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16324 states, 16323 states have (on average 1.7064265147338111) internal successors, (27854), 16323 states have internal predecessors, (27854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16324 states to 16324 states and 27854 transitions. [2023-12-25 09:17:23,092 INFO L78 Accepts]: Start accepts. Automaton has 16324 states and 27854 transitions. Word has length 214 [2023-12-25 09:17:23,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:23,093 INFO L495 AbstractCegarLoop]: Abstraction has 16324 states and 27854 transitions. [2023-12-25 09:17:23,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:23,094 INFO L276 IsEmpty]: Start isEmpty. Operand 16324 states and 27854 transitions. [2023-12-25 09:17:23,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-12-25 09:17:23,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:23,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:23,139 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 09:17:23,342 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 09:17:23,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:23,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:23,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1183599502, now seen corresponding path program 1 times [2023-12-25 09:17:23,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:23,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541668417] [2023-12-25 09:17:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:23,343 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 09:17:23,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:23,358 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 09:17:23,359 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 09:17:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:23,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:17:23,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:23,603 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 09:17:23,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:23,603 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:23,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541668417] [2023-12-25 09:17:23,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541668417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:23,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:23,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:17:23,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725754092] [2023-12-25 09:17:23,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:23,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:17:23,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:23,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:17:23,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:17:23,605 INFO L87 Difference]: Start difference. First operand 16324 states and 27854 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:23,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:23,699 INFO L93 Difference]: Finished difference Result 31696 states and 53672 transitions. [2023-12-25 09:17:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:17:23,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2023-12-25 09:17:23,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:23,736 INFO L225 Difference]: With dead ends: 31696 [2023-12-25 09:17:23,737 INFO L226 Difference]: Without dead ends: 23758 [2023-12-25 09:17:23,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:17:23,754 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 289 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:23,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 2527 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:17:23,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23758 states. [2023-12-25 09:17:24,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23758 to 23756. [2023-12-25 09:17:24,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23756 states, 23755 states have (on average 1.6942117448958114) internal successors, (40246), 23755 states have internal predecessors, (40246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23756 states to 23756 states and 40246 transitions. [2023-12-25 09:17:24,196 INFO L78 Accepts]: Start accepts. Automaton has 23756 states and 40246 transitions. Word has length 216 [2023-12-25 09:17:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:24,197 INFO L495 AbstractCegarLoop]: Abstraction has 23756 states and 40246 transitions. [2023-12-25 09:17:24,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 23756 states and 40246 transitions. [2023-12-25 09:17:24,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-12-25 09:17:24,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:24,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:24,222 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 (8)] Ended with exit code 0 [2023-12-25 09:17:24,422 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 09:17:24,422 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:24,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:24,423 INFO L85 PathProgramCache]: Analyzing trace with hash -218183371, now seen corresponding path program 1 times [2023-12-25 09:17:24,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:24,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503322134] [2023-12-25 09:17:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:24,424 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 09:17:24,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:24,425 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 09:17:24,428 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 09:17:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:24,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:17:24,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:24,836 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 09:17:24,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:24,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:24,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503322134] [2023-12-25 09:17:24,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [503322134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:24,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:24,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:17:24,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995625940] [2023-12-25 09:17:24,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:24,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:17:24,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:24,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:17:24,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:17:24,838 INFO L87 Difference]: Start difference. First operand 23756 states and 40246 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:25,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:25,316 INFO L93 Difference]: Finished difference Result 70000 states and 118648 transitions. [2023-12-25 09:17:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:17:25,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2023-12-25 09:17:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:25,402 INFO L225 Difference]: With dead ends: 70000 [2023-12-25 09:17:25,402 INFO L226 Difference]: Without dead ends: 46630 [2023-12-25 09:17:25,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:17:25,428 INFO L413 NwaCegarLoop]: 1321 mSDtfsCounter, 3400 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3400 SdHoareTripleChecker+Valid, 2562 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:25,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3400 Valid, 2562 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:17:25,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46630 states. [2023-12-25 09:17:25,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46630 to 46628. [2023-12-25 09:17:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46628 states, 46627 states have (on average 1.6884208720269371) internal successors, (78726), 46627 states have internal predecessors, (78726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46628 states to 46628 states and 78726 transitions. [2023-12-25 09:17:26,139 INFO L78 Accepts]: Start accepts. Automaton has 46628 states and 78726 transitions. Word has length 220 [2023-12-25 09:17:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:26,140 INFO L495 AbstractCegarLoop]: Abstraction has 46628 states and 78726 transitions. [2023-12-25 09:17:26,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:26,140 INFO L276 IsEmpty]: Start isEmpty. Operand 46628 states and 78726 transitions. [2023-12-25 09:17:26,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-25 09:17:26,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:26,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:26,178 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 (9)] Ended with exit code 0 [2023-12-25 09:17:26,376 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 09:17:26,376 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:26,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:26,377 INFO L85 PathProgramCache]: Analyzing trace with hash -833479117, now seen corresponding path program 1 times [2023-12-25 09:17:26,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:26,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524638329] [2023-12-25 09:17:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:26,378 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 09:17:26,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:26,378 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 09:17:26,380 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 09:17:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:26,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:17:26,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:26,573 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 09:17:26,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:26,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:26,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524638329] [2023-12-25 09:17:26,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524638329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:26,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:26,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:17:26,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002206698] [2023-12-25 09:17:26,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:26,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:17:26,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:26,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:17:26,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:17:26,575 INFO L87 Difference]: Start difference. First operand 46628 states and 78726 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:26,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:26,924 INFO L93 Difference]: Finished difference Result 75512 states and 127272 transitions. [2023-12-25 09:17:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:17:26,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2023-12-25 09:17:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:27,023 INFO L225 Difference]: With dead ends: 75512 [2023-12-25 09:17:27,023 INFO L226 Difference]: Without dead ends: 59846 [2023-12-25 09:17:27,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:17:27,063 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 290 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 2756 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:27,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 2756 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:17:27,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59846 states. [2023-12-25 09:17:27,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59846 to 59844. [2023-12-25 09:17:27,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59844 states, 59843 states have (on average 1.6839730628477851) internal successors, (100774), 59843 states have internal predecessors, (100774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:28,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59844 states to 59844 states and 100774 transitions. [2023-12-25 09:17:28,086 INFO L78 Accepts]: Start accepts. Automaton has 59844 states and 100774 transitions. Word has length 221 [2023-12-25 09:17:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:28,087 INFO L495 AbstractCegarLoop]: Abstraction has 59844 states and 100774 transitions. [2023-12-25 09:17:28,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 59844 states and 100774 transitions. [2023-12-25 09:17:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-25 09:17:28,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:28,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:28,128 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 09:17:28,315 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 09:17:28,316 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:28,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:28,316 INFO L85 PathProgramCache]: Analyzing trace with hash -12874814, now seen corresponding path program 1 times [2023-12-25 09:17:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:28,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873700872] [2023-12-25 09:17:28,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:28,317 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 09:17:28,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:28,318 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 09:17:28,473 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 09:17:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:28,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:17:28,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:28,872 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 09:17:28,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:28,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:28,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873700872] [2023-12-25 09:17:28,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873700872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:28,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:28,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:17:28,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559358261] [2023-12-25 09:17:28,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:28,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:17:28,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:17:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:17:28,874 INFO L87 Difference]: Start difference. First operand 59844 states and 100774 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:29,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:29,381 INFO L93 Difference]: Finished difference Result 173818 states and 292291 transitions. [2023-12-25 09:17:29,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:17:29,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2023-12-25 09:17:29,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:29,600 INFO L225 Difference]: With dead ends: 173818 [2023-12-25 09:17:29,600 INFO L226 Difference]: Without dead ends: 117160 [2023-12-25 09:17:29,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:17:29,886 INFO L413 NwaCegarLoop]: 2469 mSDtfsCounter, 1035 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:29,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 3724 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:17:29,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117160 states. [2023-12-25 09:17:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117160 to 117158. [2023-12-25 09:17:31,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117158 states, 117157 states have (on average 1.677006068779501) internal successors, (196473), 117157 states have internal predecessors, (196473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117158 states to 117158 states and 196473 transitions. [2023-12-25 09:17:31,668 INFO L78 Accepts]: Start accepts. Automaton has 117158 states and 196473 transitions. Word has length 222 [2023-12-25 09:17:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:31,668 INFO L495 AbstractCegarLoop]: Abstraction has 117158 states and 196473 transitions. [2023-12-25 09:17:31,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:31,674 INFO L276 IsEmpty]: Start isEmpty. Operand 117158 states and 196473 transitions. [2023-12-25 09:17:31,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-25 09:17:31,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:31,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:31,941 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 09:17:32,125 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 09:17:32,126 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:32,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:32,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1914284213, now seen corresponding path program 1 times [2023-12-25 09:17:32,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:32,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206521628] [2023-12-25 09:17:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:32,128 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 09:17:32,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:32,129 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 09:17:32,129 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 09:17:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:32,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:17:32,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:32,774 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 09:17:32,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:32,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:32,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206521628] [2023-12-25 09:17:32,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206521628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:32,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:32,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:17:32,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836464489] [2023-12-25 09:17:32,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:32,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:17:32,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:32,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:17:32,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:17:32,775 INFO L87 Difference]: Start difference. First operand 117158 states and 196473 transitions. Second operand has 5 states, 5 states have (on average 44.6) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:33,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:33,779 INFO L93 Difference]: Finished difference Result 197800 states and 330826 transitions. [2023-12-25 09:17:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:17:33,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-12-25 09:17:33,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:33,964 INFO L225 Difference]: With dead ends: 197800 [2023-12-25 09:17:33,965 INFO L226 Difference]: Without dead ends: 117158 [2023-12-25 09:17:34,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:17:34,007 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 1735 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:34,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 3018 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:17:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117158 states. [2023-12-25 09:17:35,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117158 to 117158. [2023-12-25 09:17:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117158 states, 117157 states have (on average 1.669358211630547) internal successors, (195577), 117157 states have internal predecessors, (195577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:35,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117158 states to 117158 states and 195577 transitions. [2023-12-25 09:17:35,638 INFO L78 Accepts]: Start accepts. Automaton has 117158 states and 195577 transitions. Word has length 223 [2023-12-25 09:17:35,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:35,639 INFO L495 AbstractCegarLoop]: Abstraction has 117158 states and 195577 transitions. [2023-12-25 09:17:35,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 117158 states and 195577 transitions. [2023-12-25 09:17:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-25 09:17:35,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:35,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:35,972 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 (12)] Ended with exit code 0 [2023-12-25 09:17:36,136 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 09:17:36,137 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:36,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:36,137 INFO L85 PathProgramCache]: Analyzing trace with hash 999398128, now seen corresponding path program 1 times [2023-12-25 09:17:36,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:36,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303533039] [2023-12-25 09:17:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:36,138 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 09:17:36,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:36,139 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 09:17:36,141 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 09:17:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:36,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:17:36,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:36,563 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 09:17:36,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:36,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:36,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303533039] [2023-12-25 09:17:36,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303533039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:36,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:36,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:17:36,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439765828] [2023-12-25 09:17:36,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:36,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:17:36,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:36,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:17:36,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:17:36,565 INFO L87 Difference]: Start difference. First operand 117158 states and 195577 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:37,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:37,486 INFO L93 Difference]: Finished difference Result 250218 states and 418214 transitions. [2023-12-25 09:17:37,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:17:37,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-12-25 09:17:37,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:37,717 INFO L225 Difference]: With dead ends: 250218 [2023-12-25 09:17:37,717 INFO L226 Difference]: Without dead ends: 133555 [2023-12-25 09:17:37,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:17:37,801 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 3471 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3471 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:37,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3471 Valid, 2526 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:17:37,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133555 states. [2023-12-25 09:17:39,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133555 to 118234. [2023-12-25 09:17:39,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118234 states, 118233 states have (on average 1.6697622491182664) internal successors, (197421), 118233 states have internal predecessors, (197421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:39,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118234 states to 118234 states and 197421 transitions. [2023-12-25 09:17:39,936 INFO L78 Accepts]: Start accepts. Automaton has 118234 states and 197421 transitions. Word has length 223 [2023-12-25 09:17:39,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:39,936 INFO L495 AbstractCegarLoop]: Abstraction has 118234 states and 197421 transitions. [2023-12-25 09:17:39,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:39,936 INFO L276 IsEmpty]: Start isEmpty. Operand 118234 states and 197421 transitions. [2023-12-25 09:17:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-25 09:17:39,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:39,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:39,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-25 09:17:40,173 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 09:17:40,173 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:40,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:40,174 INFO L85 PathProgramCache]: Analyzing trace with hash -241775965, now seen corresponding path program 1 times [2023-12-25 09:17:40,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:40,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267663719] [2023-12-25 09:17:40,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:40,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 09:17:40,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:40,176 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 09:17:40,177 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 09:17:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:40,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:17:40,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:40,583 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 09:17:40,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:40,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:40,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267663719] [2023-12-25 09:17:40,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267663719] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:40,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:40,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:17:40,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461744324] [2023-12-25 09:17:40,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:40,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:17:40,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:40,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:17:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:17:40,585 INFO L87 Difference]: Start difference. First operand 118234 states and 197421 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:41,887 INFO L93 Difference]: Finished difference Result 345524 states and 576399 transitions. [2023-12-25 09:17:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:17:41,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2023-12-25 09:17:41,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:42,354 INFO L225 Difference]: With dead ends: 345524 [2023-12-25 09:17:42,355 INFO L226 Difference]: Without dead ends: 232538 [2023-12-25 09:17:42,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:17:42,401 INFO L413 NwaCegarLoop]: 2449 mSDtfsCounter, 1018 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 3700 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:42,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 3700 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:17:42,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232538 states. [2023-12-25 09:17:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232538 to 232536. [2023-12-25 09:17:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232536 states, 232535 states have (on average 1.6633754058528825) internal successors, (386793), 232535 states have internal predecessors, (386793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232536 states to 232536 states and 386793 transitions. [2023-12-25 09:17:45,777 INFO L78 Accepts]: Start accepts. Automaton has 232536 states and 386793 transitions. Word has length 225 [2023-12-25 09:17:45,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:45,778 INFO L495 AbstractCegarLoop]: Abstraction has 232536 states and 386793 transitions. [2023-12-25 09:17:45,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:45,778 INFO L276 IsEmpty]: Start isEmpty. Operand 232536 states and 386793 transitions. [2023-12-25 09:17:45,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-25 09:17:45,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:45,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:45,870 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 09:17:46,070 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 09:17:46,070 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:46,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:46,071 INFO L85 PathProgramCache]: Analyzing trace with hash 56629167, now seen corresponding path program 1 times [2023-12-25 09:17:46,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:46,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952728311] [2023-12-25 09:17:46,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:46,072 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 09:17:46,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:46,073 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 09:17:46,074 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 09:17:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:46,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:17:46,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:46,807 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 09:17:46,808 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:46,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:46,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952728311] [2023-12-25 09:17:46,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952728311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:46,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:46,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:17:46,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810481891] [2023-12-25 09:17:46,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:46,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:17:46,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:46,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:17:46,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:17:46,810 INFO L87 Difference]: Start difference. First operand 232536 states and 386793 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:48,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:48,550 INFO L93 Difference]: Finished difference Result 496922 states and 827454 transitions. [2023-12-25 09:17:48,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:17:48,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2023-12-25 09:17:48,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:48,945 INFO L225 Difference]: With dead ends: 496922 [2023-12-25 09:17:48,945 INFO L226 Difference]: Without dead ends: 265280 [2023-12-25 09:17:48,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:17:49,000 INFO L413 NwaCegarLoop]: 1287 mSDtfsCounter, 3438 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3438 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:49,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3438 Valid, 2524 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:17:49,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265280 states. [2023-12-25 09:17:51,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265280 to 233652. [2023-12-25 09:17:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233652 states, 233651 states have (on average 1.6631214931671596) internal successors, (388590), 233651 states have internal predecessors, (388590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233652 states to 233652 states and 388590 transitions. [2023-12-25 09:17:52,659 INFO L78 Accepts]: Start accepts. Automaton has 233652 states and 388590 transitions. Word has length 226 [2023-12-25 09:17:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:52,659 INFO L495 AbstractCegarLoop]: Abstraction has 233652 states and 388590 transitions. [2023-12-25 09:17:52,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 233652 states and 388590 transitions. [2023-12-25 09:17:53,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-25 09:17:53,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:53,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:53,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-25 09:17:53,391 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 09:17:53,392 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:17:53,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:17:53,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1325608231, now seen corresponding path program 1 times [2023-12-25 09:17:53,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:17:53,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988947887] [2023-12-25 09:17:53,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:17:53,394 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 09:17:53,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:17:53,395 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 09:17:53,397 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 09:17:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:17:53,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 09:17:53,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:17:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 09:17:54,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:17:54,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:17:54,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988947887] [2023-12-25 09:17:54,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988947887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:17:54,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:17:54,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 09:17:54,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675463010] [2023-12-25 09:17:54,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:17:54,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 09:17:54,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:17:54,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 09:17:54,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:17:54,028 INFO L87 Difference]: Start difference. First operand 233652 states and 388590 transitions. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:55,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:17:55,454 INFO L93 Difference]: Finished difference Result 401654 states and 666799 transitions. [2023-12-25 09:17:55,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 09:17:55,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2023-12-25 09:17:55,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:17:55,899 INFO L225 Difference]: With dead ends: 401654 [2023-12-25 09:17:55,899 INFO L226 Difference]: Without dead ends: 233652 [2023-12-25 09:17:56,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-25 09:17:56,315 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 1401 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:17:56,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 3020 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:17:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233652 states. [2023-12-25 09:17:58,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233652 to 233652. [2023-12-25 09:17:59,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233652 states, 233651 states have (on average 1.6549041091200123) internal successors, (386670), 233651 states have internal predecessors, (386670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:59,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233652 states to 233652 states and 386670 transitions. [2023-12-25 09:17:59,856 INFO L78 Accepts]: Start accepts. Automaton has 233652 states and 386670 transitions. Word has length 228 [2023-12-25 09:17:59,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:17:59,856 INFO L495 AbstractCegarLoop]: Abstraction has 233652 states and 386670 transitions. [2023-12-25 09:17:59,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:17:59,857 INFO L276 IsEmpty]: Start isEmpty. Operand 233652 states and 386670 transitions. [2023-12-25 09:17:59,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-25 09:17:59,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:17:59,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:17:59,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-25 09:18:00,148 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 09:18:00,152 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:18:00,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:18:00,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1374585452, now seen corresponding path program 1 times [2023-12-25 09:18:00,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:18:00,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858947478] [2023-12-25 09:18:00,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:18:00,154 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 09:18:00,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:18:00,155 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 09:18:00,156 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 09:18:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:18:00,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:18:00,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:18:00,539 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 09:18:00,539 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:18:00,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:18:00,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858947478] [2023-12-25 09:18:00,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858947478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:18:00,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:18:00,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:18:00,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703457594] [2023-12-25 09:18:00,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:18:00,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:18:00,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:18:00,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:18:00,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:18:00,541 INFO L87 Difference]: Start difference. First operand 233652 states and 386670 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:18:03,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:18:03,019 INFO L93 Difference]: Finished difference Result 683730 states and 1131374 transitions. [2023-12-25 09:18:03,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:18:03,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2023-12-25 09:18:03,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:18:03,796 INFO L225 Difference]: With dead ends: 683730 [2023-12-25 09:18:03,796 INFO L226 Difference]: Without dead ends: 458768 [2023-12-25 09:18:03,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:18:03,911 INFO L413 NwaCegarLoop]: 2431 mSDtfsCounter, 1000 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 3679 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:18:03,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 3679 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:18:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458768 states. [2023-12-25 09:18:09,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458768 to 458766. [2023-12-25 09:18:10,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458766 states, 458765 states have (on average 1.649951500223426) internal successors, (756940), 458765 states have internal predecessors, (756940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:18:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458766 states to 458766 states and 756940 transitions. [2023-12-25 09:18:11,833 INFO L78 Accepts]: Start accepts. Automaton has 458766 states and 756940 transitions. Word has length 228 [2023-12-25 09:18:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:18:11,833 INFO L495 AbstractCegarLoop]: Abstraction has 458766 states and 756940 transitions. [2023-12-25 09:18:11,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:18:11,833 INFO L276 IsEmpty]: Start isEmpty. Operand 458766 states and 756940 transitions. [2023-12-25 09:18:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-25 09:18:12,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:18:12,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:18:12,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-25 09:18:12,214 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 09:18:12,215 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:18:12,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:18:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1177001358, now seen corresponding path program 1 times [2023-12-25 09:18:12,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:18:12,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631172283] [2023-12-25 09:18:12,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:18:12,216 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 09:18:12,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:18:12,221 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 09:18:12,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 09:18:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:18:12,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-25 09:18:12,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:18:12,624 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 09:18:12,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:18:12,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:18:12,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631172283] [2023-12-25 09:18:12,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631172283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:18:12,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:18:12,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:18:12,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321987994] [2023-12-25 09:18:12,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:18:12,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 09:18:12,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:18:12,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 09:18:12,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 09:18:12,626 INFO L87 Difference]: Start difference. First operand 458766 states and 756940 transitions. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:18:16,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:18:16,294 INFO L93 Difference]: Finished difference Result 981050 states and 1620454 transitions. [2023-12-25 09:18:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 09:18:16,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2023-12-25 09:18:16,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:18:17,667 INFO L225 Difference]: With dead ends: 981050 [2023-12-25 09:18:17,668 INFO L226 Difference]: Without dead ends: 523808 [2023-12-25 09:18:17,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-25 09:18:17,828 INFO L413 NwaCegarLoop]: 1284 mSDtfsCounter, 3392 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3392 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 09:18:17,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3392 Valid, 2518 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 09:18:18,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523808 states. [2023-12-25 09:18:24,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523808 to 461838. [2023-12-25 09:18:25,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461838 states, 461837 states have (on average 1.6499154463587802) internal successors, (761992), 461837 states have internal predecessors, (761992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:18:26,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461838 states to 461838 states and 761992 transitions. [2023-12-25 09:18:26,428 INFO L78 Accepts]: Start accepts. Automaton has 461838 states and 761992 transitions. Word has length 229 [2023-12-25 09:18:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:18:26,429 INFO L495 AbstractCegarLoop]: Abstraction has 461838 states and 761992 transitions. [2023-12-25 09:18:26,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:18:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 461838 states and 761992 transitions. [2023-12-25 09:18:26,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-25 09:18:26,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:18:26,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:18:26,617 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 (18)] Ended with exit code 0 [2023-12-25 09:18:26,816 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 09:18:26,817 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:18:26,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:18:26,817 INFO L85 PathProgramCache]: Analyzing trace with hash 365121361, now seen corresponding path program 1 times [2023-12-25 09:18:26,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:18:26,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995454725] [2023-12-25 09:18:26,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:18:26,818 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 09:18:26,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:18:26,821 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 09:18:26,823 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 09:18:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:18:26,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:18:27,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:18:27,126 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 09:18:27,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:18:27,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:18:27,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995454725] [2023-12-25 09:18:27,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995454725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:18:27,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:18:27,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:18:27,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72034255] [2023-12-25 09:18:27,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:18:27,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:18:27,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:18:27,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:18:27,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:18:27,130 INFO L87 Difference]: Start difference. First operand 461838 states and 761992 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:18:31,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:18:31,391 INFO L93 Difference]: Finished difference Result 1102354 states and 1809546 transitions. [2023-12-25 09:18:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:18:31,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 231 [2023-12-25 09:18:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:18:33,124 INFO L225 Difference]: With dead ends: 1102354 [2023-12-25 09:18:33,125 INFO L226 Difference]: Without dead ends: 770576 [2023-12-25 09:18:33,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:18:33,297 INFO L413 NwaCegarLoop]: 1285 mSDtfsCounter, 265 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 09:18:33,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 2513 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 09:18:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770576 states. [2023-12-25 09:18:42,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770576 to 770574. [2023-12-25 09:18:43,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770574 states, 770573 states have (on average 1.638687054957804) internal successors, (1262728), 770573 states have internal predecessors, (1262728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:18:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770574 states to 770574 states and 1262728 transitions. [2023-12-25 09:18:47,515 INFO L78 Accepts]: Start accepts. Automaton has 770574 states and 1262728 transitions. Word has length 231 [2023-12-25 09:18:47,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 09:18:47,516 INFO L495 AbstractCegarLoop]: Abstraction has 770574 states and 1262728 transitions. [2023-12-25 09:18:47,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:18:47,516 INFO L276 IsEmpty]: Start isEmpty. Operand 770574 states and 1262728 transitions. [2023-12-25 09:18:47,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-25 09:18:47,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 09:18:47,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 09:18:47,796 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 09:18:47,983 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 09:18:47,984 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 09:18:47,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 09:18:47,985 INFO L85 PathProgramCache]: Analyzing trace with hash -193080594, now seen corresponding path program 1 times [2023-12-25 09:18:47,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 09:18:47,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009086887] [2023-12-25 09:18:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 09:18:48,000 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 09:18:48,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 09:18:48,013 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 09:18:48,045 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 09:18:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 09:18:48,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 09:18:48,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 09:18:48,768 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 09:18:48,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 09:18:48,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 09:18:48,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009086887] [2023-12-25 09:18:48,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009086887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 09:18:48,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 09:18:48,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 09:18:48,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336208926] [2023-12-25 09:18:48,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 09:18:48,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 09:18:48,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 09:18:48,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 09:18:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:18:48,770 INFO L87 Difference]: Start difference. First operand 770574 states and 1262728 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 09:18:57,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 09:18:57,858 INFO L93 Difference]: Finished difference Result 2266672 states and 3714440 transitions. [2023-12-25 09:18:57,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 09:18:57,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2023-12-25 09:18:57,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 09:19:01,873 INFO L225 Difference]: With dead ends: 2266672 [2023-12-25 09:19:01,873 INFO L226 Difference]: Without dead ends: 1513262 [2023-12-25 09:19:02,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 09:19:02,650 INFO L413 NwaCegarLoop]: 2366 mSDtfsCounter, 969 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 3613 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 09:19:02,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 3613 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 09:19:03,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513262 states. [2023-12-25 09:19:21,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513262 to 1513260. [2023-12-25 09:19:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513260 states, 1513259 states have (on average 1.6344102364499402) internal successors, (2473286), 1513259 states have internal predecessors, (2473286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)