/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/systemc/token_ring.13.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 07:19:01,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 07:19:01,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 07:19:01,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 07:19:01,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 07:19:01,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 07:19:01,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 07:19:01,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 07:19:01,457 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 07:19:01,457 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 07:19:01,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 07:19:01,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 07:19:01,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 07:19:01,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 07:19:01,458 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 07:19:01,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 07:19:01,459 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 07:19:01,459 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 07:19:01,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 07:19:01,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 07:19:01,460 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 07:19:01,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 07:19:01,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 07:19:01,461 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 07:19:01,461 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 07:19:01,461 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 07:19:01,462 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 07:19:01,462 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 07:19:01,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 07:19:01,463 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 07:19:01,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 07:19:01,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 07:19:01,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 07:19:01,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 07:19:01,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:19:01,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 07:19:01,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 07:19:01,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 07:19:01,465 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 07:19:01,465 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 07:19:01,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 07:19:01,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 07:19:01,466 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 07:19:01,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 07:19:01,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 07:19:01,466 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 07:19:01,466 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 07:19:01,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 07:19:01,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 07:19:01,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 07:19:01,647 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 07:19:01,648 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 07:19:01,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.13.cil-1.c [2023-12-25 07:19:02,744 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 07:19:02,890 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 07:19:02,891 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.13.cil-1.c [2023-12-25 07:19:02,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cf73551e/3d001c1bac584569b50bce597d5a980f/FLAG3d7d1d702 [2023-12-25 07:19:02,914 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cf73551e/3d001c1bac584569b50bce597d5a980f [2023-12-25 07:19:02,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 07:19:02,917 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 07:19:02,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 07:19:02,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 07:19:02,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 07:19:02,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:19:02" (1/1) ... [2023-12-25 07:19:02,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b31d557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:02, skipping insertion in model container [2023-12-25 07:19:02,923 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 07:19:02" (1/1) ... [2023-12-25 07:19:02,968 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 07:19:03,079 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.13.cil-1.c[671,684] [2023-12-25 07:19:03,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:19:03,232 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 07:19:03,245 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.13.cil-1.c[671,684] [2023-12-25 07:19:03,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 07:19:03,332 INFO L206 MainTranslator]: Completed translation [2023-12-25 07:19:03,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03 WrapperNode [2023-12-25 07:19:03,333 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 07:19:03,334 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 07:19:03,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 07:19:03,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 07:19:03,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03" (1/1) ... [2023-12-25 07:19:03,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03" (1/1) ... [2023-12-25 07:19:03,396 INFO L138 Inliner]: procedures = 54, calls = 71, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 911 [2023-12-25 07:19:03,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 07:19:03,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 07:19:03,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 07:19:03,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 07:19:03,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03" (1/1) ... [2023-12-25 07:19:03,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03" (1/1) ... [2023-12-25 07:19:03,417 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03" (1/1) ... [2023-12-25 07:19:03,430 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-25 07:19:03,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03" (1/1) ... [2023-12-25 07:19:03,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03" (1/1) ... [2023-12-25 07:19:03,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03" (1/1) ... [2023-12-25 07:19:03,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03" (1/1) ... [2023-12-25 07:19:03,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03" (1/1) ... [2023-12-25 07:19:03,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03" (1/1) ... [2023-12-25 07:19:03,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 07:19:03,459 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 07:19:03,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 07:19:03,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 07:19:03,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03" (1/1) ... [2023-12-25 07:19:03,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 07:19:03,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 07:19:03,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 07:19:03,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 07:19:03,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 07:19:03,526 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-25 07:19:03,526 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-25 07:19:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-25 07:19:03,527 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-25 07:19:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-25 07:19:03,528 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-25 07:19:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 07:19:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-25 07:19:03,528 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-25 07:19:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-25 07:19:03,528 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-25 07:19:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-25 07:19:03,529 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-25 07:19:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-25 07:19:03,529 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-25 07:19:03,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 07:19:03,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 07:19:03,659 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 07:19:03,661 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 07:19:04,399 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 07:19:04,451 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 07:19:04,452 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-12-25 07:19:04,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:19:04 BoogieIcfgContainer [2023-12-25 07:19:04,452 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 07:19:04,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 07:19:04,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 07:19:04,456 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 07:19:04,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 07:19:02" (1/3) ... [2023-12-25 07:19:04,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db85cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:19:04, skipping insertion in model container [2023-12-25 07:19:04,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 07:19:03" (2/3) ... [2023-12-25 07:19:04,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db85cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 07:19:04, skipping insertion in model container [2023-12-25 07:19:04,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 07:19:04" (3/3) ... [2023-12-25 07:19:04,458 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.13.cil-1.c [2023-12-25 07:19:04,470 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 07:19:04,471 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 07:19:04,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 07:19:04,511 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;@5aaf4d34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 07:19:04,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 07:19:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 379 states, 341 states have (on average 1.7419354838709677) internal successors, (594), 345 states have internal predecessors, (594), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-25 07:19:04,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:04,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:04,527 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] [2023-12-25 07:19:04,528 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:04,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:04,532 INFO L85 PathProgramCache]: Analyzing trace with hash -612656562, now seen corresponding path program 1 times [2023-12-25 07:19:04,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:04,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259147370] [2023-12-25 07:19:04,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:04,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:04,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:04,586 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:04,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 07:19:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:04,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:19:04,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:04,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:04,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:04,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:04,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259147370] [2023-12-25 07:19:04,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259147370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:04,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:04,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 07:19:04,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135965673] [2023-12-25 07:19:04,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:04,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:19:04,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:19:04,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:19:04,902 INFO L87 Difference]: Start difference. First operand has 379 states, 341 states have (on average 1.7419354838709677) internal successors, (594), 345 states have internal predecessors, (594), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:05,032 INFO L93 Difference]: Finished difference Result 747 states and 1286 transitions. [2023-12-25 07:19:05,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:19:05,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:05,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:05,042 INFO L225 Difference]: With dead ends: 747 [2023-12-25 07:19:05,042 INFO L226 Difference]: Without dead ends: 376 [2023-12-25 07:19:05,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:19:05,048 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 605 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:05,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 568 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:19:05,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-12-25 07:19:05,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2023-12-25 07:19:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 340 states have (on average 1.6411764705882352) internal successors, (558), 342 states have internal predecessors, (558), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-25 07:19:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 614 transitions. [2023-12-25 07:19:05,091 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 614 transitions. Word has length 171 [2023-12-25 07:19:05,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:05,093 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 614 transitions. [2023-12-25 07:19:05,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 614 transitions. [2023-12-25 07:19:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:05,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:05,098 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] [2023-12-25 07:19:05,128 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 (2)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:05,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:05,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:05,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:05,307 INFO L85 PathProgramCache]: Analyzing trace with hash 173341328, now seen corresponding path program 1 times [2023-12-25 07:19:05,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:05,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516469424] [2023-12-25 07:19:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:05,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:05,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:05,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:05,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 07:19:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:05,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:05,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:05,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:05,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:05,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516469424] [2023-12-25 07:19:05,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516469424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:05,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:05,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:05,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953020985] [2023-12-25 07:19:05,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:05,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:05,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:05,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:05,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:05,591 INFO L87 Difference]: Start difference. First operand 376 states and 614 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:06,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:06,383 INFO L93 Difference]: Finished difference Result 1143 states and 1881 transitions. [2023-12-25 07:19:06,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 07:19:06,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:06,390 INFO L225 Difference]: With dead ends: 1143 [2023-12-25 07:19:06,390 INFO L226 Difference]: Without dead ends: 786 [2023-12-25 07:19:06,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:06,393 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1188 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:06,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 1599 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 07:19:06,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-12-25 07:19:06,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 753. [2023-12-25 07:19:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 688 states have (on average 1.6497093023255813) internal successors, (1135), 691 states have internal predecessors, (1135), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-25 07:19:06,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1236 transitions. [2023-12-25 07:19:06,511 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1236 transitions. Word has length 171 [2023-12-25 07:19:06,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:06,512 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1236 transitions. [2023-12-25 07:19:06,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:06,512 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1236 transitions. [2023-12-25 07:19:06,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:06,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:06,515 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] [2023-12-25 07:19:06,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:06,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:06,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:06,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:06,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1178446604, now seen corresponding path program 1 times [2023-12-25 07:19:06,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:06,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745559343] [2023-12-25 07:19:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:06,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:06,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:06,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:06,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-25 07:19:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:06,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:06,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:07,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:07,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:07,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745559343] [2023-12-25 07:19:07,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745559343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:07,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:07,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:07,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171373764] [2023-12-25 07:19:07,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:07,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:07,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:07,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:07,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:07,047 INFO L87 Difference]: Start difference. First operand 753 states and 1236 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:07,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:07,615 INFO L93 Difference]: Finished difference Result 1487 states and 2445 transitions. [2023-12-25 07:19:07,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:07,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:07,620 INFO L225 Difference]: With dead ends: 1487 [2023-12-25 07:19:07,621 INFO L226 Difference]: Without dead ends: 753 [2023-12-25 07:19:07,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:07,637 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 835 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:07,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1001 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:19:07,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-25 07:19:07,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2023-12-25 07:19:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 688 states have (on average 1.6395348837209303) internal successors, (1128), 691 states have internal predecessors, (1128), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-25 07:19:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1229 transitions. [2023-12-25 07:19:07,674 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1229 transitions. Word has length 171 [2023-12-25 07:19:07,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:07,675 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1229 transitions. [2023-12-25 07:19:07,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:07,675 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1229 transitions. [2023-12-25 07:19:07,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:07,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:07,676 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] [2023-12-25 07:19:07,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-25 07:19:07,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:07,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:07,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:07,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1837171952, now seen corresponding path program 1 times [2023-12-25 07:19:07,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:07,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313588262] [2023-12-25 07:19:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:07,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:07,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:07,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:07,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-25 07:19:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:08,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:08,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:08,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:08,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:08,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313588262] [2023-12-25 07:19:08,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313588262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:08,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:08,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:08,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325350395] [2023-12-25 07:19:08,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:08,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:08,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:08,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:08,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:08,116 INFO L87 Difference]: Start difference. First operand 753 states and 1229 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:08,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:08,604 INFO L93 Difference]: Finished difference Result 1487 states and 2431 transitions. [2023-12-25 07:19:08,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:08,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:08,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:08,607 INFO L225 Difference]: With dead ends: 1487 [2023-12-25 07:19:08,607 INFO L226 Difference]: Without dead ends: 753 [2023-12-25 07:19:08,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:08,613 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 828 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:08,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 994 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:19:08,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-25 07:19:08,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2023-12-25 07:19:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 688 states have (on average 1.629360465116279) internal successors, (1121), 691 states have internal predecessors, (1121), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-25 07:19:08,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1222 transitions. [2023-12-25 07:19:08,677 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1222 transitions. Word has length 171 [2023-12-25 07:19:08,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:08,677 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1222 transitions. [2023-12-25 07:19:08,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1222 transitions. [2023-12-25 07:19:08,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:08,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:08,679 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] [2023-12-25 07:19:08,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:08,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:08,885 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:08,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:08,885 INFO L85 PathProgramCache]: Analyzing trace with hash -803439596, now seen corresponding path program 1 times [2023-12-25 07:19:08,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:08,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293526330] [2023-12-25 07:19:08,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:08,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:08,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:08,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:08,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-25 07:19:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:09,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:09,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:09,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:09,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:09,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:09,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293526330] [2023-12-25 07:19:09,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293526330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:09,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:09,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:09,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635296770] [2023-12-25 07:19:09,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:09,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:09,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:09,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:09,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:09,088 INFO L87 Difference]: Start difference. First operand 753 states and 1222 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:09,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:09,438 INFO L93 Difference]: Finished difference Result 1487 states and 2417 transitions. [2023-12-25 07:19:09,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:09,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:09,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:09,442 INFO L225 Difference]: With dead ends: 1487 [2023-12-25 07:19:09,444 INFO L226 Difference]: Without dead ends: 753 [2023-12-25 07:19:09,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:09,450 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 822 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:09,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 987 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 07:19:09,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-25 07:19:09,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2023-12-25 07:19:09,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 688 states have (on average 1.619186046511628) internal successors, (1114), 691 states have internal predecessors, (1114), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-25 07:19:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1215 transitions. [2023-12-25 07:19:09,488 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1215 transitions. Word has length 171 [2023-12-25 07:19:09,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:09,488 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1215 transitions. [2023-12-25 07:19:09,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:09,489 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1215 transitions. [2023-12-25 07:19:09,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:09,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:09,490 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] [2023-12-25 07:19:09,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:09,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:09,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:09,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:09,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1878472048, now seen corresponding path program 1 times [2023-12-25 07:19:09,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:09,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312187563] [2023-12-25 07:19:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:09,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:09,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:09,697 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:09,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-25 07:19:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:09,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:09,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:09,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:09,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:09,903 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:09,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312187563] [2023-12-25 07:19:09,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312187563] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:09,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:09,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:09,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717927931] [2023-12-25 07:19:09,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:09,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:09,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:09,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:09,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:09,905 INFO L87 Difference]: Start difference. First operand 753 states and 1215 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:10,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:10,386 INFO L93 Difference]: Finished difference Result 1487 states and 2403 transitions. [2023-12-25 07:19:10,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:10,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:10,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:10,389 INFO L225 Difference]: With dead ends: 1487 [2023-12-25 07:19:10,389 INFO L226 Difference]: Without dead ends: 753 [2023-12-25 07:19:10,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:10,391 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 816 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:10,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 980 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:19:10,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-25 07:19:10,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2023-12-25 07:19:10,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 688 states have (on average 1.6090116279069768) internal successors, (1107), 691 states have internal predecessors, (1107), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-25 07:19:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1208 transitions. [2023-12-25 07:19:10,419 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1208 transitions. Word has length 171 [2023-12-25 07:19:10,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:10,419 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1208 transitions. [2023-12-25 07:19:10,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1208 transitions. [2023-12-25 07:19:10,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:10,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:10,421 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] [2023-12-25 07:19:10,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:10,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:10,626 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:10,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:10,627 INFO L85 PathProgramCache]: Analyzing trace with hash 442154132, now seen corresponding path program 1 times [2023-12-25 07:19:10,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:10,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163975203] [2023-12-25 07:19:10,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:10,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:10,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:10,629 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:10,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-25 07:19:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:10,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:10,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:10,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:10,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:10,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163975203] [2023-12-25 07:19:10,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163975203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:10,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:10,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:10,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667060020] [2023-12-25 07:19:10,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:10,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:10,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:10,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:10,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:10,844 INFO L87 Difference]: Start difference. First operand 753 states and 1208 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:11,319 INFO L93 Difference]: Finished difference Result 1487 states and 2389 transitions. [2023-12-25 07:19:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:11,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:11,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:11,323 INFO L225 Difference]: With dead ends: 1487 [2023-12-25 07:19:11,323 INFO L226 Difference]: Without dead ends: 753 [2023-12-25 07:19:11,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:11,325 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 810 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:11,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 973 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:19:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-25 07:19:11,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2023-12-25 07:19:11,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 688 states have (on average 1.5988372093023255) internal successors, (1100), 691 states have internal predecessors, (1100), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-25 07:19:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1201 transitions. [2023-12-25 07:19:11,365 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1201 transitions. Word has length 171 [2023-12-25 07:19:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:11,365 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1201 transitions. [2023-12-25 07:19:11,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:11,366 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1201 transitions. [2023-12-25 07:19:11,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:11,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:11,367 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] [2023-12-25 07:19:11,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:11,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:11,572 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:11,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:11,573 INFO L85 PathProgramCache]: Analyzing trace with hash 780441682, now seen corresponding path program 1 times [2023-12-25 07:19:11,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:11,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150864449] [2023-12-25 07:19:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:11,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:11,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:11,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:11,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-25 07:19:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:11,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:11,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:11,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:11,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:11,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150864449] [2023-12-25 07:19:11,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150864449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:11,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:11,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460232600] [2023-12-25 07:19:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:11,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:11,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:11,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:11,815 INFO L87 Difference]: Start difference. First operand 753 states and 1201 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:12,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:12,327 INFO L93 Difference]: Finished difference Result 1487 states and 2375 transitions. [2023-12-25 07:19:12,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:12,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:12,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:12,331 INFO L225 Difference]: With dead ends: 1487 [2023-12-25 07:19:12,331 INFO L226 Difference]: Without dead ends: 753 [2023-12-25 07:19:12,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:12,334 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 804 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:12,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 966 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:19:12,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-25 07:19:12,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2023-12-25 07:19:12,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 688 states have (on average 1.5886627906976745) internal successors, (1093), 691 states have internal predecessors, (1093), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-25 07:19:12,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1194 transitions. [2023-12-25 07:19:12,365 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1194 transitions. Word has length 171 [2023-12-25 07:19:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:12,367 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1194 transitions. [2023-12-25 07:19:12,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1194 transitions. [2023-12-25 07:19:12,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:12,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:12,368 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] [2023-12-25 07:19:12,375 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 07:19:12,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:12,573 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:12,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:12,574 INFO L85 PathProgramCache]: Analyzing trace with hash -638370986, now seen corresponding path program 1 times [2023-12-25 07:19:12,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:12,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789576373] [2023-12-25 07:19:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:12,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:12,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:12,575 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:12,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-25 07:19:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:12,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:12,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:12,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:12,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:12,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789576373] [2023-12-25 07:19:12,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789576373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:12,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:12,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:12,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911461441] [2023-12-25 07:19:12,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:12,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:12,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:12,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:12,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:12,774 INFO L87 Difference]: Start difference. First operand 753 states and 1194 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:13,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:13,150 INFO L93 Difference]: Finished difference Result 1487 states and 2361 transitions. [2023-12-25 07:19:13,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:13,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:13,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:13,153 INFO L225 Difference]: With dead ends: 1487 [2023-12-25 07:19:13,154 INFO L226 Difference]: Without dead ends: 753 [2023-12-25 07:19:13,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:13,155 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 798 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:13,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 959 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 07:19:13,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-25 07:19:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2023-12-25 07:19:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 688 states have (on average 1.5784883720930232) internal successors, (1086), 691 states have internal predecessors, (1086), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-25 07:19:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1187 transitions. [2023-12-25 07:19:13,193 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1187 transitions. Word has length 171 [2023-12-25 07:19:13,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:13,193 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1187 transitions. [2023-12-25 07:19:13,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:13,193 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1187 transitions. [2023-12-25 07:19:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:13,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:13,195 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] [2023-12-25 07:19:13,199 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 (10)] Ended with exit code 0 [2023-12-25 07:19:13,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:13,399 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:13,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:13,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2086807506, now seen corresponding path program 1 times [2023-12-25 07:19:13,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:13,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708645975] [2023-12-25 07:19:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:13,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:13,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:13,401 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:13,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-25 07:19:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:13,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:13,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:13,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:13,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:13,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708645975] [2023-12-25 07:19:13,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708645975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:13,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:13,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:13,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524874604] [2023-12-25 07:19:13,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:13,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:13,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:13,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:13,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:13,635 INFO L87 Difference]: Start difference. First operand 753 states and 1187 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:14,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:14,054 INFO L93 Difference]: Finished difference Result 1487 states and 2347 transitions. [2023-12-25 07:19:14,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:14,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:14,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:14,058 INFO L225 Difference]: With dead ends: 1487 [2023-12-25 07:19:14,058 INFO L226 Difference]: Without dead ends: 753 [2023-12-25 07:19:14,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:14,059 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 792 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:14,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 952 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:19:14,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-25 07:19:14,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2023-12-25 07:19:14,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 688 states have (on average 1.568313953488372) internal successors, (1079), 691 states have internal predecessors, (1079), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-25 07:19:14,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1180 transitions. [2023-12-25 07:19:14,086 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1180 transitions. Word has length 171 [2023-12-25 07:19:14,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:14,086 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1180 transitions. [2023-12-25 07:19:14,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1180 transitions. [2023-12-25 07:19:14,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:14,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:14,087 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] [2023-12-25 07:19:14,091 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 (11)] Ended with exit code 0 [2023-12-25 07:19:14,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:14,292 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:14,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:14,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1704608810, now seen corresponding path program 1 times [2023-12-25 07:19:14,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:14,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207885054] [2023-12-25 07:19:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:14,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:14,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:14,295 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:14,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-25 07:19:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:14,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:14,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:14,502 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:14,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:14,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207885054] [2023-12-25 07:19:14,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207885054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:14,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:14,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:14,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307052686] [2023-12-25 07:19:14,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:14,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:14,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:14,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:14,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:14,517 INFO L87 Difference]: Start difference. First operand 753 states and 1180 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:14,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:14,960 INFO L93 Difference]: Finished difference Result 1487 states and 2333 transitions. [2023-12-25 07:19:14,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:14,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:14,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:14,964 INFO L225 Difference]: With dead ends: 1487 [2023-12-25 07:19:14,964 INFO L226 Difference]: Without dead ends: 753 [2023-12-25 07:19:14,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:14,966 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 785 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:14,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 945 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:19:14,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-25 07:19:14,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2023-12-25 07:19:14,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 688 states have (on average 1.558139534883721) internal successors, (1072), 691 states have internal predecessors, (1072), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-25 07:19:14,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1173 transitions. [2023-12-25 07:19:14,996 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1173 transitions. Word has length 171 [2023-12-25 07:19:14,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:14,997 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1173 transitions. [2023-12-25 07:19:14,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:14,997 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1173 transitions. [2023-12-25 07:19:14,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:14,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:14,998 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] [2023-12-25 07:19:15,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:15,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:15,203 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:15,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:15,204 INFO L85 PathProgramCache]: Analyzing trace with hash -41516838, now seen corresponding path program 1 times [2023-12-25 07:19:15,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:15,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437120509] [2023-12-25 07:19:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:15,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:15,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:15,206 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:15,207 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 (13)] Waiting until timeout for monitored process [2023-12-25 07:19:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:15,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:15,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:15,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:15,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:15,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437120509] [2023-12-25 07:19:15,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437120509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:15,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:15,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:15,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809932043] [2023-12-25 07:19:15,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:15,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:15,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:15,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:15,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:15,422 INFO L87 Difference]: Start difference. First operand 753 states and 1173 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:15,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:15,917 INFO L93 Difference]: Finished difference Result 1487 states and 2319 transitions. [2023-12-25 07:19:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:15,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:15,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:15,936 INFO L225 Difference]: With dead ends: 1487 [2023-12-25 07:19:15,936 INFO L226 Difference]: Without dead ends: 753 [2023-12-25 07:19:15,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:15,938 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 779 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:15,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 938 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:19:15,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-25 07:19:16,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2023-12-25 07:19:16,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 688 states have (on average 1.5479651162790697) internal successors, (1065), 691 states have internal predecessors, (1065), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-25 07:19:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1166 transitions. [2023-12-25 07:19:16,019 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1166 transitions. Word has length 171 [2023-12-25 07:19:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:16,020 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1166 transitions. [2023-12-25 07:19:16,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1166 transitions. [2023-12-25 07:19:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:16,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:16,021 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] [2023-12-25 07:19:16,035 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 07:19:16,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:16,227 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:16,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash -126416042, now seen corresponding path program 1 times [2023-12-25 07:19:16,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:16,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097609113] [2023-12-25 07:19:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:16,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:16,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:16,229 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:16,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-25 07:19:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:16,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:16,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:16,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:16,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:16,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097609113] [2023-12-25 07:19:16,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097609113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:16,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:16,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:16,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587526899] [2023-12-25 07:19:16,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:16,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:16,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:16,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:16,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:16,452 INFO L87 Difference]: Start difference. First operand 753 states and 1166 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:16,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:16,897 INFO L93 Difference]: Finished difference Result 1487 states and 2305 transitions. [2023-12-25 07:19:16,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:16,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:16,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:16,901 INFO L225 Difference]: With dead ends: 1487 [2023-12-25 07:19:16,901 INFO L226 Difference]: Without dead ends: 753 [2023-12-25 07:19:16,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:16,903 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 773 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:16,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 931 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:19:16,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-12-25 07:19:16,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2023-12-25 07:19:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 688 states have (on average 1.5377906976744187) internal successors, (1058), 691 states have internal predecessors, (1058), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-25 07:19:16,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1159 transitions. [2023-12-25 07:19:16,939 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1159 transitions. Word has length 171 [2023-12-25 07:19:16,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:16,940 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1159 transitions. [2023-12-25 07:19:16,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1159 transitions. [2023-12-25 07:19:16,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:16,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:16,941 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] [2023-12-25 07:19:16,955 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 07:19:17,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:17,146 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:17,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:17,146 INFO L85 PathProgramCache]: Analyzing trace with hash -129154726, now seen corresponding path program 1 times [2023-12-25 07:19:17,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:17,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450733629] [2023-12-25 07:19:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:17,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:17,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:17,148 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:17,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-25 07:19:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:17,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:17,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:17,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:17,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:17,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:17,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450733629] [2023-12-25 07:19:17,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450733629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:17,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:17,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:17,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423332110] [2023-12-25 07:19:17,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:17,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:17,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:17,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:17,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:17,334 INFO L87 Difference]: Start difference. First operand 753 states and 1159 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:17,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:17,905 INFO L93 Difference]: Finished difference Result 1665 states and 2583 transitions. [2023-12-25 07:19:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:17,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:17,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:17,908 INFO L225 Difference]: With dead ends: 1665 [2023-12-25 07:19:17,908 INFO L226 Difference]: Without dead ends: 931 [2023-12-25 07:19:17,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:17,911 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 890 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:17,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 925 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:19:17,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-25 07:19:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2023-12-25 07:19:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 860 states have (on average 1.5174418604651163) internal successors, (1305), 863 states have internal predecessors, (1305), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2023-12-25 07:19:17,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1410 transitions. [2023-12-25 07:19:17,945 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1410 transitions. Word has length 171 [2023-12-25 07:19:17,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:17,945 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1410 transitions. [2023-12-25 07:19:17,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:17,946 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1410 transitions. [2023-12-25 07:19:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:17,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:17,946 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] [2023-12-25 07:19:17,953 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 07:19:18,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:18,151 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:18,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:18,151 INFO L85 PathProgramCache]: Analyzing trace with hash -588520841, now seen corresponding path program 1 times [2023-12-25 07:19:18,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:18,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712226713] [2023-12-25 07:19:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:18,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:18,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:18,153 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:18,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-25 07:19:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:18,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:18,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:18,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:18,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712226713] [2023-12-25 07:19:18,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712226713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:18,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:18,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:18,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586624061] [2023-12-25 07:19:18,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:18,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:18,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:18,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:18,348 INFO L87 Difference]: Start difference. First operand 931 states and 1410 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:18,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:18,897 INFO L93 Difference]: Finished difference Result 2021 states and 3085 transitions. [2023-12-25 07:19:18,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:18,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:18,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:18,902 INFO L225 Difference]: With dead ends: 2021 [2023-12-25 07:19:18,902 INFO L226 Difference]: Without dead ends: 1109 [2023-12-25 07:19:18,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:18,905 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 883 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:18,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 918 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:19:18,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2023-12-25 07:19:18,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1109. [2023-12-25 07:19:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 1032 states have (on average 1.5) internal successors, (1548), 1035 states have internal predecessors, (1548), 55 states have call successors, (55), 21 states have call predecessors, (55), 21 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2023-12-25 07:19:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1657 transitions. [2023-12-25 07:19:18,982 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1657 transitions. Word has length 171 [2023-12-25 07:19:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:18,982 INFO L495 AbstractCegarLoop]: Abstraction has 1109 states and 1657 transitions. [2023-12-25 07:19:18,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1657 transitions. [2023-12-25 07:19:18,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:18,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:18,984 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] [2023-12-25 07:19:18,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:19,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:19,189 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:19,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:19,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1512032635, now seen corresponding path program 1 times [2023-12-25 07:19:19,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:19,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090336051] [2023-12-25 07:19:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:19,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:19,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:19,192 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:19,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-25 07:19:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:19,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:19,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:19,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:19,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:19,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090336051] [2023-12-25 07:19:19,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090336051] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:19,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:19,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:19,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384784915] [2023-12-25 07:19:19,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:19,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:19,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:19,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:19,394 INFO L87 Difference]: Start difference. First operand 1109 states and 1657 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:19,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:19,946 INFO L93 Difference]: Finished difference Result 2377 states and 3579 transitions. [2023-12-25 07:19:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:19,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:19,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:19,950 INFO L225 Difference]: With dead ends: 2377 [2023-12-25 07:19:19,950 INFO L226 Difference]: Without dead ends: 1287 [2023-12-25 07:19:19,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:19,953 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 877 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:19,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 911 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:19:19,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2023-12-25 07:19:19,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1287. [2023-12-25 07:19:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1204 states have (on average 1.48421926910299) internal successors, (1787), 1207 states have internal predecessors, (1787), 57 states have call successors, (57), 25 states have call predecessors, (57), 25 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2023-12-25 07:19:20,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1900 transitions. [2023-12-25 07:19:20,002 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1900 transitions. Word has length 171 [2023-12-25 07:19:20,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:20,003 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1900 transitions. [2023-12-25 07:19:20,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:20,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1900 transitions. [2023-12-25 07:19:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:20,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:20,004 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] [2023-12-25 07:19:20,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:20,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:20,205 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:20,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:20,206 INFO L85 PathProgramCache]: Analyzing trace with hash -529533930, now seen corresponding path program 1 times [2023-12-25 07:19:20,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:20,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061352199] [2023-12-25 07:19:20,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:20,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:20,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:20,207 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:20,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-25 07:19:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:20,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:20,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:20,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:20,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:20,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061352199] [2023-12-25 07:19:20,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061352199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:20,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:20,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:20,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84064808] [2023-12-25 07:19:20,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:20,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:20,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:20,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:20,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:20,422 INFO L87 Difference]: Start difference. First operand 1287 states and 1900 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:21,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:21,060 INFO L93 Difference]: Finished difference Result 2733 states and 4065 transitions. [2023-12-25 07:19:21,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:21,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:21,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:21,065 INFO L225 Difference]: With dead ends: 2733 [2023-12-25 07:19:21,065 INFO L226 Difference]: Without dead ends: 1465 [2023-12-25 07:19:21,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:21,068 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 870 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:21,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 904 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 07:19:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2023-12-25 07:19:21,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1465. [2023-12-25 07:19:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1376 states have (on average 1.4694767441860466) internal successors, (2022), 1379 states have internal predecessors, (2022), 59 states have call successors, (59), 29 states have call predecessors, (59), 29 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2023-12-25 07:19:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2139 transitions. [2023-12-25 07:19:21,129 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2139 transitions. Word has length 171 [2023-12-25 07:19:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:21,129 INFO L495 AbstractCegarLoop]: Abstraction has 1465 states and 2139 transitions. [2023-12-25 07:19:21,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2139 transitions. [2023-12-25 07:19:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:21,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:21,131 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] [2023-12-25 07:19:21,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:21,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:21,337 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:21,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:21,338 INFO L85 PathProgramCache]: Analyzing trace with hash -759450981, now seen corresponding path program 1 times [2023-12-25 07:19:21,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:21,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519519700] [2023-12-25 07:19:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:21,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:21,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:21,340 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:21,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-25 07:19:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:21,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:21,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:21,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:21,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:21,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519519700] [2023-12-25 07:19:21,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519519700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:21,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:21,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:21,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834151792] [2023-12-25 07:19:21,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:21,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:21,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:21,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:21,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:21,559 INFO L87 Difference]: Start difference. First operand 1465 states and 2139 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:22,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:22,089 INFO L93 Difference]: Finished difference Result 3089 states and 4543 transitions. [2023-12-25 07:19:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:22,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:22,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:22,097 INFO L225 Difference]: With dead ends: 3089 [2023-12-25 07:19:22,097 INFO L226 Difference]: Without dead ends: 1643 [2023-12-25 07:19:22,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:22,101 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 862 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:22,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 897 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:19:22,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2023-12-25 07:19:22,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1643. [2023-12-25 07:19:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1548 states have (on average 1.4554263565891472) internal successors, (2253), 1551 states have internal predecessors, (2253), 61 states have call successors, (61), 33 states have call predecessors, (61), 33 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2023-12-25 07:19:22,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2374 transitions. [2023-12-25 07:19:22,171 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2374 transitions. Word has length 171 [2023-12-25 07:19:22,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:22,171 INFO L495 AbstractCegarLoop]: Abstraction has 1643 states and 2374 transitions. [2023-12-25 07:19:22,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2374 transitions. [2023-12-25 07:19:22,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:22,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:22,172 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] [2023-12-25 07:19:22,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:22,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:22,378 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:22,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1736089440, now seen corresponding path program 1 times [2023-12-25 07:19:22,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:22,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931361907] [2023-12-25 07:19:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:22,379 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:22,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:22,380 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:22,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-25 07:19:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:22,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:22,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:22,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:22,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:22,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931361907] [2023-12-25 07:19:22,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931361907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:22,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:22,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:22,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525506796] [2023-12-25 07:19:22,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:22,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:22,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:22,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:22,583 INFO L87 Difference]: Start difference. First operand 1643 states and 2374 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:23,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:23,157 INFO L93 Difference]: Finished difference Result 3445 states and 5013 transitions. [2023-12-25 07:19:23,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:23,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:23,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:23,161 INFO L225 Difference]: With dead ends: 3445 [2023-12-25 07:19:23,161 INFO L226 Difference]: Without dead ends: 1821 [2023-12-25 07:19:23,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:23,164 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 855 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:23,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 890 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:19:23,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2023-12-25 07:19:23,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1821. [2023-12-25 07:19:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1720 states have (on average 1.441860465116279) internal successors, (2480), 1723 states have internal predecessors, (2480), 63 states have call successors, (63), 37 states have call predecessors, (63), 37 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2023-12-25 07:19:23,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2605 transitions. [2023-12-25 07:19:23,227 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2605 transitions. Word has length 171 [2023-12-25 07:19:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:23,227 INFO L495 AbstractCegarLoop]: Abstraction has 1821 states and 2605 transitions. [2023-12-25 07:19:23,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:23,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2605 transitions. [2023-12-25 07:19:23,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:23,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:23,228 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] [2023-12-25 07:19:23,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:23,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:23,434 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:23,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:23,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1821678116, now seen corresponding path program 1 times [2023-12-25 07:19:23,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:23,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455607050] [2023-12-25 07:19:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:23,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:23,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:23,436 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:23,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-25 07:19:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:23,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:23,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:23,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:23,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:23,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:23,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455607050] [2023-12-25 07:19:23,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455607050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:23,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:23,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:23,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052758020] [2023-12-25 07:19:23,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:23,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:23,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:23,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:23,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:23,632 INFO L87 Difference]: Start difference. First operand 1821 states and 2605 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:24,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:24,404 INFO L93 Difference]: Finished difference Result 3801 states and 5475 transitions. [2023-12-25 07:19:24,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:24,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:24,410 INFO L225 Difference]: With dead ends: 3801 [2023-12-25 07:19:24,410 INFO L226 Difference]: Without dead ends: 1999 [2023-12-25 07:19:24,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:24,413 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 848 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:24,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 883 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-25 07:19:24,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2023-12-25 07:19:24,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1999. [2023-12-25 07:19:24,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1999 states, 1892 states have (on average 1.4286469344608879) internal successors, (2703), 1895 states have internal predecessors, (2703), 65 states have call successors, (65), 41 states have call predecessors, (65), 41 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-12-25 07:19:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 2832 transitions. [2023-12-25 07:19:24,478 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 2832 transitions. Word has length 171 [2023-12-25 07:19:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:24,479 INFO L495 AbstractCegarLoop]: Abstraction has 1999 states and 2832 transitions. [2023-12-25 07:19:24,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 2832 transitions. [2023-12-25 07:19:24,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:24,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:24,480 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] [2023-12-25 07:19:24,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:24,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:24,684 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:24,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:24,684 INFO L85 PathProgramCache]: Analyzing trace with hash 265638113, now seen corresponding path program 1 times [2023-12-25 07:19:24,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:24,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602691259] [2023-12-25 07:19:24,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:24,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:24,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:24,686 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:24,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-25 07:19:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:24,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:24,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:24,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:24,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:24,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602691259] [2023-12-25 07:19:24,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602691259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:24,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:24,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:24,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258961942] [2023-12-25 07:19:24,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:24,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:24,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:24,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:24,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:24,888 INFO L87 Difference]: Start difference. First operand 1999 states and 2832 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:25,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:25,349 INFO L93 Difference]: Finished difference Result 4157 states and 5929 transitions. [2023-12-25 07:19:25,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:25,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:25,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:25,364 INFO L225 Difference]: With dead ends: 4157 [2023-12-25 07:19:25,365 INFO L226 Difference]: Without dead ends: 2177 [2023-12-25 07:19:25,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:25,369 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 841 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:25,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 876 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-25 07:19:25,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2023-12-25 07:19:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 2177. [2023-12-25 07:19:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 2064 states have (on average 1.4156976744186047) internal successors, (2922), 2067 states have internal predecessors, (2922), 67 states have call successors, (67), 45 states have call predecessors, (67), 45 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2023-12-25 07:19:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3055 transitions. [2023-12-25 07:19:25,550 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3055 transitions. Word has length 171 [2023-12-25 07:19:25,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:25,550 INFO L495 AbstractCegarLoop]: Abstraction has 2177 states and 3055 transitions. [2023-12-25 07:19:25,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:25,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3055 transitions. [2023-12-25 07:19:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:25,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:25,551 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] [2023-12-25 07:19:25,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:25,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:25,756 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:25,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:25,757 INFO L85 PathProgramCache]: Analyzing trace with hash -319133537, now seen corresponding path program 1 times [2023-12-25 07:19:25,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:25,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112328412] [2023-12-25 07:19:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:25,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:25,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:25,758 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:25,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-25 07:19:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:25,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:25,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:25,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:25,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:25,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112328412] [2023-12-25 07:19:25,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112328412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:25,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:25,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:25,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415133515] [2023-12-25 07:19:25,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:25,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:25,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:25,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:25,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:25,947 INFO L87 Difference]: Start difference. First operand 2177 states and 3055 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:26,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:26,433 INFO L93 Difference]: Finished difference Result 4513 states and 6375 transitions. [2023-12-25 07:19:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:26,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:26,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:26,441 INFO L225 Difference]: With dead ends: 4513 [2023-12-25 07:19:26,441 INFO L226 Difference]: Without dead ends: 2355 [2023-12-25 07:19:26,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:26,445 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 834 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:26,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 869 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:19:26,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2023-12-25 07:19:26,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2355. [2023-12-25 07:19:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2236 states have (on average 1.4029516994633273) internal successors, (3137), 2239 states have internal predecessors, (3137), 69 states have call successors, (69), 49 states have call predecessors, (69), 49 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2023-12-25 07:19:26,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3274 transitions. [2023-12-25 07:19:26,534 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3274 transitions. Word has length 171 [2023-12-25 07:19:26,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:26,534 INFO L495 AbstractCegarLoop]: Abstraction has 2355 states and 3274 transitions. [2023-12-25 07:19:26,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3274 transitions. [2023-12-25 07:19:26,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:26,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:26,535 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] [2023-12-25 07:19:26,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:26,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:26,740 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:26,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:26,740 INFO L85 PathProgramCache]: Analyzing trace with hash -427089436, now seen corresponding path program 1 times [2023-12-25 07:19:26,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:26,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452922241] [2023-12-25 07:19:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:26,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:26,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:26,742 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:26,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-25 07:19:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:26,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:26,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:26,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:26,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:26,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:26,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452922241] [2023-12-25 07:19:26,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452922241] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:26,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:26,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:26,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753509019] [2023-12-25 07:19:26,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:26,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:26,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:26,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:26,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:26,947 INFO L87 Difference]: Start difference. First operand 2355 states and 3274 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:27,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:27,533 INFO L93 Difference]: Finished difference Result 4869 states and 6813 transitions. [2023-12-25 07:19:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:27,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:27,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:27,539 INFO L225 Difference]: With dead ends: 4869 [2023-12-25 07:19:27,540 INFO L226 Difference]: Without dead ends: 2533 [2023-12-25 07:19:27,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:27,543 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 827 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:27,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 862 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:19:27,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2023-12-25 07:19:27,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2533. [2023-12-25 07:19:27,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2533 states, 2408 states have (on average 1.3903654485049834) internal successors, (3348), 2411 states have internal predecessors, (3348), 71 states have call successors, (71), 53 states have call predecessors, (71), 53 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2023-12-25 07:19:27,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 3489 transitions. [2023-12-25 07:19:27,627 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 3489 transitions. Word has length 171 [2023-12-25 07:19:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:27,627 INFO L495 AbstractCegarLoop]: Abstraction has 2533 states and 3489 transitions. [2023-12-25 07:19:27,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:27,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 3489 transitions. [2023-12-25 07:19:27,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:27,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:27,628 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] [2023-12-25 07:19:27,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:27,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:27,833 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:27,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:27,833 INFO L85 PathProgramCache]: Analyzing trace with hash -637893024, now seen corresponding path program 1 times [2023-12-25 07:19:27,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:27,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643582011] [2023-12-25 07:19:27,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:27,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:27,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:27,835 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:27,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-25 07:19:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:27,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:27,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:28,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:28,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:28,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643582011] [2023-12-25 07:19:28,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643582011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:28,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:28,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:28,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081229929] [2023-12-25 07:19:28,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:28,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:28,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:28,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:28,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:28,022 INFO L87 Difference]: Start difference. First operand 2533 states and 3489 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:28,638 INFO L93 Difference]: Finished difference Result 5225 states and 7243 transitions. [2023-12-25 07:19:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:28,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:28,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:28,645 INFO L225 Difference]: With dead ends: 5225 [2023-12-25 07:19:28,645 INFO L226 Difference]: Without dead ends: 2711 [2023-12-25 07:19:28,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:28,649 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 820 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:28,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 855 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:19:28,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2023-12-25 07:19:28,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2711. [2023-12-25 07:19:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2580 states have (on average 1.377906976744186) internal successors, (3555), 2583 states have internal predecessors, (3555), 73 states have call successors, (73), 57 states have call predecessors, (73), 57 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2023-12-25 07:19:28,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3700 transitions. [2023-12-25 07:19:28,746 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3700 transitions. Word has length 171 [2023-12-25 07:19:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:28,746 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 3700 transitions. [2023-12-25 07:19:28,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:28,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3700 transitions. [2023-12-25 07:19:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:28,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:28,748 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] [2023-12-25 07:19:28,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-25 07:19:28,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:28,952 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:28,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:28,952 INFO L85 PathProgramCache]: Analyzing trace with hash -344859163, now seen corresponding path program 1 times [2023-12-25 07:19:28,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:28,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289166917] [2023-12-25 07:19:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:28,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:28,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:28,955 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:28,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-25 07:19:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:29,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:29,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:29,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:29,180 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:29,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289166917] [2023-12-25 07:19:29,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289166917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:29,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:29,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:29,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357813611] [2023-12-25 07:19:29,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:29,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:29,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:29,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:29,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:29,182 INFO L87 Difference]: Start difference. First operand 2711 states and 3700 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:29,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:29,778 INFO L93 Difference]: Finished difference Result 5581 states and 7665 transitions. [2023-12-25 07:19:29,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:29,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:29,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:29,784 INFO L225 Difference]: With dead ends: 5581 [2023-12-25 07:19:29,784 INFO L226 Difference]: Without dead ends: 2889 [2023-12-25 07:19:29,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:29,788 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 812 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:29,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 848 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:19:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2023-12-25 07:19:29,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 2889. [2023-12-25 07:19:29,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2752 states have (on average 1.3655523255813953) internal successors, (3758), 2755 states have internal predecessors, (3758), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-25 07:19:29,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 3907 transitions. [2023-12-25 07:19:29,914 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 3907 transitions. Word has length 171 [2023-12-25 07:19:29,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:29,915 INFO L495 AbstractCegarLoop]: Abstraction has 2889 states and 3907 transitions. [2023-12-25 07:19:29,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:29,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 3907 transitions. [2023-12-25 07:19:29,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:29,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:29,916 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] [2023-12-25 07:19:29,920 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 (26)] Ended with exit code 0 [2023-12-25 07:19:30,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:30,122 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:30,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1171969303, now seen corresponding path program 1 times [2023-12-25 07:19:30,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:30,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270518480] [2023-12-25 07:19:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:30,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:30,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:30,124 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:30,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-25 07:19:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:30,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:30,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:30,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:30,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:30,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:30,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270518480] [2023-12-25 07:19:30,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270518480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:30,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:30,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:30,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549416499] [2023-12-25 07:19:30,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:30,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:30,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:30,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:30,286 INFO L87 Difference]: Start difference. First operand 2889 states and 3907 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:30,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:30,465 INFO L93 Difference]: Finished difference Result 5922 states and 8058 transitions. [2023-12-25 07:19:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:30,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:30,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:30,474 INFO L225 Difference]: With dead ends: 5922 [2023-12-25 07:19:30,474 INFO L226 Difference]: Without dead ends: 3053 [2023-12-25 07:19:30,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:30,481 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 119 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:30,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1478 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2023-12-25 07:19:30,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 2893. [2023-12-25 07:19:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 2756 states have (on average 1.3563134978229319) internal successors, (3738), 2759 states have internal predecessors, (3738), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-25 07:19:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 3887 transitions. [2023-12-25 07:19:30,657 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 3887 transitions. Word has length 171 [2023-12-25 07:19:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:30,657 INFO L495 AbstractCegarLoop]: Abstraction has 2893 states and 3887 transitions. [2023-12-25 07:19:30,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:30,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 3887 transitions. [2023-12-25 07:19:30,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:30,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:30,658 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] [2023-12-25 07:19:30,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:30,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:30,869 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:30,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:30,869 INFO L85 PathProgramCache]: Analyzing trace with hash 756962923, now seen corresponding path program 1 times [2023-12-25 07:19:30,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:30,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888089387] [2023-12-25 07:19:30,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:30,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:30,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:30,891 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:30,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-25 07:19:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:31,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:31,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:31,029 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:31,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888089387] [2023-12-25 07:19:31,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888089387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:31,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:31,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:31,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506268689] [2023-12-25 07:19:31,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:31,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:31,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:31,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:31,032 INFO L87 Difference]: Start difference. First operand 2893 states and 3887 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:31,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:31,201 INFO L93 Difference]: Finished difference Result 5918 states and 8002 transitions. [2023-12-25 07:19:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:31,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:31,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:31,214 INFO L225 Difference]: With dead ends: 5918 [2023-12-25 07:19:31,214 INFO L226 Difference]: Without dead ends: 3045 [2023-12-25 07:19:31,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:31,223 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 110 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:31,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 1479 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:31,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2023-12-25 07:19:31,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 2897. [2023-12-25 07:19:31,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2760 states have (on average 1.3471014492753624) internal successors, (3718), 2763 states have internal predecessors, (3718), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-25 07:19:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 3867 transitions. [2023-12-25 07:19:31,368 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 3867 transitions. Word has length 171 [2023-12-25 07:19:31,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:31,368 INFO L495 AbstractCegarLoop]: Abstraction has 2897 states and 3867 transitions. [2023-12-25 07:19:31,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 3867 transitions. [2023-12-25 07:19:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:31,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:31,369 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] [2023-12-25 07:19:31,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:31,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:31,574 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:31,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:31,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1374387799, now seen corresponding path program 1 times [2023-12-25 07:19:31,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:31,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015540818] [2023-12-25 07:19:31,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:31,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:31,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:31,577 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:31,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-25 07:19:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:31,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:31,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:31,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:31,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:31,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015540818] [2023-12-25 07:19:31,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015540818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:31,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:31,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:31,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257102537] [2023-12-25 07:19:31,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:31,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:31,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:31,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:31,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:31,727 INFO L87 Difference]: Start difference. First operand 2897 states and 3867 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:31,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:31,900 INFO L93 Difference]: Finished difference Result 5914 states and 7946 transitions. [2023-12-25 07:19:31,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:31,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:31,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:31,913 INFO L225 Difference]: With dead ends: 5914 [2023-12-25 07:19:31,913 INFO L226 Difference]: Without dead ends: 3037 [2023-12-25 07:19:31,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:31,917 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 101 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:31,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1480 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2023-12-25 07:19:32,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2901. [2023-12-25 07:19:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2764 states have (on average 1.337916063675832) internal successors, (3698), 2767 states have internal predecessors, (3698), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-25 07:19:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 3847 transitions. [2023-12-25 07:19:32,055 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 3847 transitions. Word has length 171 [2023-12-25 07:19:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:32,055 INFO L495 AbstractCegarLoop]: Abstraction has 2901 states and 3847 transitions. [2023-12-25 07:19:32,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:32,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 3847 transitions. [2023-12-25 07:19:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:32,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:32,056 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] [2023-12-25 07:19:32,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:32,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:32,262 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:32,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:32,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1255946325, now seen corresponding path program 1 times [2023-12-25 07:19:32,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:32,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196551501] [2023-12-25 07:19:32,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:32,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:32,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:32,264 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:32,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-25 07:19:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:32,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:32,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:32,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:32,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:32,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196551501] [2023-12-25 07:19:32,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196551501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:32,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:32,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:32,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141089671] [2023-12-25 07:19:32,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:32,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:32,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:32,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:32,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:32,405 INFO L87 Difference]: Start difference. First operand 2901 states and 3847 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:32,576 INFO L93 Difference]: Finished difference Result 5910 states and 7890 transitions. [2023-12-25 07:19:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:32,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:32,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:32,582 INFO L225 Difference]: With dead ends: 5910 [2023-12-25 07:19:32,582 INFO L226 Difference]: Without dead ends: 3029 [2023-12-25 07:19:32,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:32,586 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 92 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:32,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1481 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:32,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2023-12-25 07:19:32,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 2905. [2023-12-25 07:19:32,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 2768 states have (on average 1.328757225433526) internal successors, (3678), 2771 states have internal predecessors, (3678), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-25 07:19:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 3827 transitions. [2023-12-25 07:19:32,724 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 3827 transitions. Word has length 171 [2023-12-25 07:19:32,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:32,724 INFO L495 AbstractCegarLoop]: Abstraction has 2905 states and 3827 transitions. [2023-12-25 07:19:32,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:32,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 3827 transitions. [2023-12-25 07:19:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:32,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:32,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:19:32,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:32,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:32,929 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:32,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:32,930 INFO L85 PathProgramCache]: Analyzing trace with hash 641550441, now seen corresponding path program 1 times [2023-12-25 07:19:32,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:32,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986899312] [2023-12-25 07:19:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:32,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:32,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:32,931 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:32,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-25 07:19:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:33,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:33,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:33,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:33,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:33,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:33,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986899312] [2023-12-25 07:19:33,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986899312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:33,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:33,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:33,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167406630] [2023-12-25 07:19:33,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:33,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:33,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:33,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:33,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:33,096 INFO L87 Difference]: Start difference. First operand 2905 states and 3827 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:33,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:33,268 INFO L93 Difference]: Finished difference Result 5894 states and 7816 transitions. [2023-12-25 07:19:33,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:33,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:33,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:33,273 INFO L225 Difference]: With dead ends: 5894 [2023-12-25 07:19:33,273 INFO L226 Difference]: Without dead ends: 3009 [2023-12-25 07:19:33,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:33,277 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 74 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:33,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1482 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:33,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2023-12-25 07:19:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 2909. [2023-12-25 07:19:33,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2909 states, 2772 states have (on average 1.3196248196248197) internal successors, (3658), 2775 states have internal predecessors, (3658), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-25 07:19:33,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 3807 transitions. [2023-12-25 07:19:33,442 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 3807 transitions. Word has length 171 [2023-12-25 07:19:33,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:33,442 INFO L495 AbstractCegarLoop]: Abstraction has 2909 states and 3807 transitions. [2023-12-25 07:19:33,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:33,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 3807 transitions. [2023-12-25 07:19:33,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:33,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:33,443 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] [2023-12-25 07:19:33,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:33,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:33,648 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:33,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:33,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1776353625, now seen corresponding path program 1 times [2023-12-25 07:19:33,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:33,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947853081] [2023-12-25 07:19:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:33,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:33,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:33,650 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:33,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-25 07:19:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:33,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:33,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:33,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:33,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:33,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947853081] [2023-12-25 07:19:33,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947853081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:33,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:33,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:33,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630433112] [2023-12-25 07:19:33,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:33,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:33,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:33,794 INFO L87 Difference]: Start difference. First operand 2909 states and 3807 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:34,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:34,019 INFO L93 Difference]: Finished difference Result 5890 states and 7760 transitions. [2023-12-25 07:19:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:34,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:34,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:34,025 INFO L225 Difference]: With dead ends: 5890 [2023-12-25 07:19:34,025 INFO L226 Difference]: Without dead ends: 3001 [2023-12-25 07:19:34,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:34,029 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 65 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:34,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1483 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:34,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2023-12-25 07:19:34,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2913. [2023-12-25 07:19:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 2776 states have (on average 1.3105187319884726) internal successors, (3638), 2779 states have internal predecessors, (3638), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-25 07:19:34,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 3787 transitions. [2023-12-25 07:19:34,128 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 3787 transitions. Word has length 171 [2023-12-25 07:19:34,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:34,129 INFO L495 AbstractCegarLoop]: Abstraction has 2913 states and 3787 transitions. [2023-12-25 07:19:34,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:34,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 3787 transitions. [2023-12-25 07:19:34,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:34,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:34,129 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] [2023-12-25 07:19:34,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:34,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:34,335 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:34,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:34,335 INFO L85 PathProgramCache]: Analyzing trace with hash 100129193, now seen corresponding path program 1 times [2023-12-25 07:19:34,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:34,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184977982] [2023-12-25 07:19:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:34,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:34,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:34,337 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:34,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-25 07:19:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:34,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:34,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:34,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:34,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:34,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184977982] [2023-12-25 07:19:34,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184977982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:34,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:34,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:34,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130431056] [2023-12-25 07:19:34,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:34,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:34,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:34,472 INFO L87 Difference]: Start difference. First operand 2913 states and 3787 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:34,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:34,661 INFO L93 Difference]: Finished difference Result 5886 states and 7704 transitions. [2023-12-25 07:19:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:34,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:34,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:34,666 INFO L225 Difference]: With dead ends: 5886 [2023-12-25 07:19:34,666 INFO L226 Difference]: Without dead ends: 2993 [2023-12-25 07:19:34,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:34,669 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 56 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:34,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1484 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:34,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2023-12-25 07:19:34,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 2917. [2023-12-25 07:19:34,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2780 states have (on average 1.3014388489208633) internal successors, (3618), 2783 states have internal predecessors, (3618), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-25 07:19:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3767 transitions. [2023-12-25 07:19:34,767 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3767 transitions. Word has length 171 [2023-12-25 07:19:34,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:34,768 INFO L495 AbstractCegarLoop]: Abstraction has 2917 states and 3767 transitions. [2023-12-25 07:19:34,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:34,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3767 transitions. [2023-12-25 07:19:34,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:34,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:34,770 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] [2023-12-25 07:19:34,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:34,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:34,975 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:34,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:34,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1042373273, now seen corresponding path program 1 times [2023-12-25 07:19:34,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:34,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619586338] [2023-12-25 07:19:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:34,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:34,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:34,977 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:35,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-25 07:19:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:35,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:35,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:35,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:35,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:35,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619586338] [2023-12-25 07:19:35,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619586338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:35,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:35,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:35,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44836186] [2023-12-25 07:19:35,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:35,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:35,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:35,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:35,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:35,112 INFO L87 Difference]: Start difference. First operand 2917 states and 3767 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:35,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:35,276 INFO L93 Difference]: Finished difference Result 5882 states and 7648 transitions. [2023-12-25 07:19:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:35,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:35,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:35,281 INFO L225 Difference]: With dead ends: 5882 [2023-12-25 07:19:35,281 INFO L226 Difference]: Without dead ends: 2985 [2023-12-25 07:19:35,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:35,285 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 47 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:35,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1485 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:35,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2023-12-25 07:19:35,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 2921. [2023-12-25 07:19:35,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2921 states, 2784 states have (on average 1.2923850574712643) internal successors, (3598), 2787 states have internal predecessors, (3598), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-25 07:19:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 3747 transitions. [2023-12-25 07:19:35,422 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 3747 transitions. Word has length 171 [2023-12-25 07:19:35,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:35,423 INFO L495 AbstractCegarLoop]: Abstraction has 2921 states and 3747 transitions. [2023-12-25 07:19:35,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:35,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 3747 transitions. [2023-12-25 07:19:35,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:35,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:35,424 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] [2023-12-25 07:19:35,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:35,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:35,632 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:35,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:35,632 INFO L85 PathProgramCache]: Analyzing trace with hash 691731177, now seen corresponding path program 1 times [2023-12-25 07:19:35,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:35,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582287121] [2023-12-25 07:19:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:35,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:35,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:35,634 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:35,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-25 07:19:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:35,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:35,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:35,768 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 07:19:35,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:35,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:35,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582287121] [2023-12-25 07:19:35,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582287121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:35,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:35,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:35,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074552994] [2023-12-25 07:19:35,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:35,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:35,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:35,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:35,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:35,770 INFO L87 Difference]: Start difference. First operand 2921 states and 3747 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:35,941 INFO L93 Difference]: Finished difference Result 5878 states and 7592 transitions. [2023-12-25 07:19:35,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:35,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:35,948 INFO L225 Difference]: With dead ends: 5878 [2023-12-25 07:19:35,948 INFO L226 Difference]: Without dead ends: 2977 [2023-12-25 07:19:35,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:35,953 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 38 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:35,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1486 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:35,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2023-12-25 07:19:36,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 2925. [2023-12-25 07:19:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2788 states have (on average 1.2833572453371593) internal successors, (3578), 2791 states have internal predecessors, (3578), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-25 07:19:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 3727 transitions. [2023-12-25 07:19:36,067 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 3727 transitions. Word has length 171 [2023-12-25 07:19:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:36,067 INFO L495 AbstractCegarLoop]: Abstraction has 2925 states and 3727 transitions. [2023-12-25 07:19:36,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 3727 transitions. [2023-12-25 07:19:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:36,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:36,068 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] [2023-12-25 07:19:36,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:36,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:36,285 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:36,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:36,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1694778329, now seen corresponding path program 1 times [2023-12-25 07:19:36,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:36,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163836393] [2023-12-25 07:19:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:36,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:36,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:36,288 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:36,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-25 07:19:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:36,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:36,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:36,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:36,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:36,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163836393] [2023-12-25 07:19:36,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163836393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:36,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:36,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:36,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113602355] [2023-12-25 07:19:36,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:36,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:36,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:36,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:36,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:36,426 INFO L87 Difference]: Start difference. First operand 2925 states and 3727 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:36,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:36,620 INFO L93 Difference]: Finished difference Result 5874 states and 7536 transitions. [2023-12-25 07:19:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:36,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:36,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:36,626 INFO L225 Difference]: With dead ends: 5874 [2023-12-25 07:19:36,626 INFO L226 Difference]: Without dead ends: 2969 [2023-12-25 07:19:36,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:36,631 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 29 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:36,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1487 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2023-12-25 07:19:36,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2929. [2023-12-25 07:19:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2792 states have (on average 1.274355300859599) internal successors, (3558), 2795 states have internal predecessors, (3558), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-25 07:19:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 3707 transitions. [2023-12-25 07:19:36,735 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 3707 transitions. Word has length 171 [2023-12-25 07:19:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:36,735 INFO L495 AbstractCegarLoop]: Abstraction has 2929 states and 3707 transitions. [2023-12-25 07:19:36,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 3707 transitions. [2023-12-25 07:19:36,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:36,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:36,736 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] [2023-12-25 07:19:36,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:36,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:36,941 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:36,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:36,942 INFO L85 PathProgramCache]: Analyzing trace with hash 914009129, now seen corresponding path program 1 times [2023-12-25 07:19:36,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:36,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012482466] [2023-12-25 07:19:36,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:36,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:36,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:36,943 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:36,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-25 07:19:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:37,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:37,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:37,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:37,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:37,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012482466] [2023-12-25 07:19:37,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012482466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:37,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:37,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:37,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643182448] [2023-12-25 07:19:37,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:37,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:37,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:37,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:37,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:37,091 INFO L87 Difference]: Start difference. First operand 2929 states and 3707 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:37,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:37,286 INFO L93 Difference]: Finished difference Result 5870 states and 7480 transitions. [2023-12-25 07:19:37,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:37,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:37,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:37,290 INFO L225 Difference]: With dead ends: 5870 [2023-12-25 07:19:37,291 INFO L226 Difference]: Without dead ends: 2961 [2023-12-25 07:19:37,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:37,293 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 20 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:37,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1488 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:37,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2023-12-25 07:19:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2933. [2023-12-25 07:19:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2796 states have (on average 1.265379113018598) internal successors, (3538), 2799 states have internal predecessors, (3538), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2023-12-25 07:19:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 3687 transitions. [2023-12-25 07:19:37,440 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 3687 transitions. Word has length 171 [2023-12-25 07:19:37,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:37,441 INFO L495 AbstractCegarLoop]: Abstraction has 2933 states and 3687 transitions. [2023-12-25 07:19:37,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:37,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 3687 transitions. [2023-12-25 07:19:37,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:37,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:37,442 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] [2023-12-25 07:19:37,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:37,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:37,646 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:37,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1115833063, now seen corresponding path program 1 times [2023-12-25 07:19:37,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:37,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969971597] [2023-12-25 07:19:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:37,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:37,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:37,649 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:37,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-25 07:19:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:37,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:19:37,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:37,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:37,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:37,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969971597] [2023-12-25 07:19:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969971597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:37,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:37,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 07:19:37,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309623112] [2023-12-25 07:19:37,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:37,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:19:37,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:19:37,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:19:37,881 INFO L87 Difference]: Start difference. First operand 2933 states and 3687 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:38,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:38,139 INFO L93 Difference]: Finished difference Result 8548 states and 10765 transitions. [2023-12-25 07:19:38,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:19:38,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:38,149 INFO L225 Difference]: With dead ends: 8548 [2023-12-25 07:19:38,149 INFO L226 Difference]: Without dead ends: 5635 [2023-12-25 07:19:38,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:19:38,153 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 420 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:38,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 1016 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5635 states. [2023-12-25 07:19:38,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5635 to 5629. [2023-12-25 07:19:38,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5629 states, 5370 states have (on average 1.2567970204841714) internal successors, (6749), 5374 states have internal predecessors, (6749), 140 states have call successors, (140), 117 states have call predecessors, (140), 118 states have return successors, (140), 138 states have call predecessors, (140), 138 states have call successors, (140) [2023-12-25 07:19:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5629 states to 5629 states and 7029 transitions. [2023-12-25 07:19:38,358 INFO L78 Accepts]: Start accepts. Automaton has 5629 states and 7029 transitions. Word has length 171 [2023-12-25 07:19:38,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:38,358 INFO L495 AbstractCegarLoop]: Abstraction has 5629 states and 7029 transitions. [2023-12-25 07:19:38,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:38,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5629 states and 7029 transitions. [2023-12-25 07:19:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:38,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:38,359 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] [2023-12-25 07:19:38,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:38,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:38,564 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:38,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:38,565 INFO L85 PathProgramCache]: Analyzing trace with hash -25814330, now seen corresponding path program 1 times [2023-12-25 07:19:38,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:38,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904374961] [2023-12-25 07:19:38,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:38,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:38,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:38,566 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:38,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-25 07:19:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:38,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-25 07:19:38,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:38,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:38,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:38,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904374961] [2023-12-25 07:19:38,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904374961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:38,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:38,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:38,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867870833] [2023-12-25 07:19:38,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:38,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:38,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:38,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:38,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:38,718 INFO L87 Difference]: Start difference. First operand 5629 states and 7029 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:38,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:38,965 INFO L93 Difference]: Finished difference Result 11498 states and 14476 transitions. [2023-12-25 07:19:38,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:38,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:38,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:38,975 INFO L225 Difference]: With dead ends: 11498 [2023-12-25 07:19:38,975 INFO L226 Difference]: Without dead ends: 5889 [2023-12-25 07:19:38,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:38,984 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 11 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:38,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1497 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:38,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5889 states. [2023-12-25 07:19:39,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5889 to 5681. [2023-12-25 07:19:39,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5681 states, 5422 states have (on average 1.249907783105865) internal successors, (6777), 5426 states have internal predecessors, (6777), 140 states have call successors, (140), 117 states have call predecessors, (140), 118 states have return successors, (140), 138 states have call predecessors, (140), 138 states have call successors, (140) [2023-12-25 07:19:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 7057 transitions. [2023-12-25 07:19:39,207 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 7057 transitions. Word has length 171 [2023-12-25 07:19:39,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:39,207 INFO L495 AbstractCegarLoop]: Abstraction has 5681 states and 7057 transitions. [2023-12-25 07:19:39,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:39,207 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 7057 transitions. [2023-12-25 07:19:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:39,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:39,208 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] [2023-12-25 07:19:39,218 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 (39)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:39,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:39,416 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:39,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:39,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1360971080, now seen corresponding path program 1 times [2023-12-25 07:19:39,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:39,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542856817] [2023-12-25 07:19:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:39,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:39,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:39,418 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:39,420 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 (40)] Waiting until timeout for monitored process [2023-12-25 07:19:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:39,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:19:39,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:39,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:39,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:39,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542856817] [2023-12-25 07:19:39,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542856817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:39,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:39,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:39,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061290887] [2023-12-25 07:19:39,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:39,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:39,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:39,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:39,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:39,689 INFO L87 Difference]: Start difference. First operand 5681 states and 7057 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:40,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:40,312 INFO L93 Difference]: Finished difference Result 11343 states and 14092 transitions. [2023-12-25 07:19:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:40,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:40,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:40,319 INFO L225 Difference]: With dead ends: 11343 [2023-12-25 07:19:40,319 INFO L226 Difference]: Without dead ends: 5681 [2023-12-25 07:19:40,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:40,323 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 618 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:40,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 840 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:19:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5681 states. [2023-12-25 07:19:40,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5681 to 5681. [2023-12-25 07:19:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5681 states, 5422 states have (on average 1.2473257100700847) internal successors, (6763), 5426 states have internal predecessors, (6763), 140 states have call successors, (140), 117 states have call predecessors, (140), 118 states have return successors, (140), 138 states have call predecessors, (140), 138 states have call successors, (140) [2023-12-25 07:19:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 7043 transitions. [2023-12-25 07:19:40,508 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 7043 transitions. Word has length 171 [2023-12-25 07:19:40,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:40,509 INFO L495 AbstractCegarLoop]: Abstraction has 5681 states and 7043 transitions. [2023-12-25 07:19:40,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:40,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 7043 transitions. [2023-12-25 07:19:40,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:40,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:40,510 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] [2023-12-25 07:19:40,517 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 (40)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:40,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:40,715 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:40,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:40,716 INFO L85 PathProgramCache]: Analyzing trace with hash -688416762, now seen corresponding path program 1 times [2023-12-25 07:19:40,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:40,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105510830] [2023-12-25 07:19:40,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:40,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:40,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:40,717 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:40,718 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 (41)] Waiting until timeout for monitored process [2023-12-25 07:19:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:40,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:19:40,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:41,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:41,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:41,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105510830] [2023-12-25 07:19:41,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105510830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:41,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:41,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:41,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535478092] [2023-12-25 07:19:41,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:41,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:41,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:41,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:41,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:41,013 INFO L87 Difference]: Start difference. First operand 5681 states and 7043 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:41,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:41,656 INFO L93 Difference]: Finished difference Result 11343 states and 14064 transitions. [2023-12-25 07:19:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 07:19:41,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:41,665 INFO L225 Difference]: With dead ends: 11343 [2023-12-25 07:19:41,665 INFO L226 Difference]: Without dead ends: 5681 [2023-12-25 07:19:41,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-25 07:19:41,670 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 605 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:41,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 833 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:19:41,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5681 states. [2023-12-25 07:19:41,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5681 to 5681. [2023-12-25 07:19:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5681 states, 5422 states have (on average 1.2447436370343048) internal successors, (6749), 5426 states have internal predecessors, (6749), 140 states have call successors, (140), 117 states have call predecessors, (140), 118 states have return successors, (140), 138 states have call predecessors, (140), 138 states have call successors, (140) [2023-12-25 07:19:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5681 states to 5681 states and 7029 transitions. [2023-12-25 07:19:41,876 INFO L78 Accepts]: Start accepts. Automaton has 5681 states and 7029 transitions. Word has length 171 [2023-12-25 07:19:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:41,876 INFO L495 AbstractCegarLoop]: Abstraction has 5681 states and 7029 transitions. [2023-12-25 07:19:41,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 5681 states and 7029 transitions. [2023-12-25 07:19:41,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:41,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:41,877 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] [2023-12-25 07:19:41,882 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 (41)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:42,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:42,082 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:42,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:42,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1082783548, now seen corresponding path program 1 times [2023-12-25 07:19:42,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:42,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282262601] [2023-12-25 07:19:42,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:42,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:42,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:42,085 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:42,086 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 (42)] Waiting until timeout for monitored process [2023-12-25 07:19:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:42,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:19:42,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:42,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:42,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:42,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282262601] [2023-12-25 07:19:42,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282262601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:42,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:42,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:42,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270642065] [2023-12-25 07:19:42,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:42,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:42,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:42,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:42,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:42,370 INFO L87 Difference]: Start difference. First operand 5681 states and 7029 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:43,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:43,187 INFO L93 Difference]: Finished difference Result 11943 states and 14855 transitions. [2023-12-25 07:19:43,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 07:19:43,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:43,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:43,201 INFO L225 Difference]: With dead ends: 11943 [2023-12-25 07:19:43,201 INFO L226 Difference]: Without dead ends: 6281 [2023-12-25 07:19:43,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 07:19:43,212 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 764 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:43,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 828 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 07:19:43,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2023-12-25 07:19:43,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 6039. [2023-12-25 07:19:43,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6039 states, 5768 states have (on average 1.2311026352288488) internal successors, (7101), 5772 states have internal predecessors, (7101), 144 states have call successors, (144), 125 states have call predecessors, (144), 126 states have return successors, (144), 142 states have call predecessors, (144), 142 states have call successors, (144) [2023-12-25 07:19:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6039 states to 6039 states and 7389 transitions. [2023-12-25 07:19:43,424 INFO L78 Accepts]: Start accepts. Automaton has 6039 states and 7389 transitions. Word has length 171 [2023-12-25 07:19:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:43,425 INFO L495 AbstractCegarLoop]: Abstraction has 6039 states and 7389 transitions. [2023-12-25 07:19:43,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 6039 states and 7389 transitions. [2023-12-25 07:19:43,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:43,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:43,426 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] [2023-12-25 07:19:43,430 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 (42)] Ended with exit code 0 [2023-12-25 07:19:43,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:43,630 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:43,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1592256638, now seen corresponding path program 1 times [2023-12-25 07:19:43,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:43,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526078060] [2023-12-25 07:19:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:43,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:43,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:43,633 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:43,665 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 (43)] Waiting until timeout for monitored process [2023-12-25 07:19:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:43,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 07:19:43,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:43,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:43,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:43,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526078060] [2023-12-25 07:19:43,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526078060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:43,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:43,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:43,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087413963] [2023-12-25 07:19:43,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:43,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 07:19:43,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:43,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 07:19:43,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 07:19:43,924 INFO L87 Difference]: Start difference. First operand 6039 states and 7389 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:44,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:44,601 INFO L93 Difference]: Finished difference Result 12369 states and 15159 transitions. [2023-12-25 07:19:44,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 07:19:44,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 171 [2023-12-25 07:19:44,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:44,631 INFO L225 Difference]: With dead ends: 12369 [2023-12-25 07:19:44,631 INFO L226 Difference]: Without dead ends: 6349 [2023-12-25 07:19:44,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-25 07:19:44,639 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 690 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:44,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 821 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:19:44,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6349 states. [2023-12-25 07:19:44,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6349 to 6329. [2023-12-25 07:19:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6329 states, 6054 states have (on average 1.2195242814667988) internal successors, (7383), 6058 states have internal predecessors, (7383), 144 states have call successors, (144), 129 states have call predecessors, (144), 130 states have return successors, (144), 142 states have call predecessors, (144), 142 states have call successors, (144) [2023-12-25 07:19:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6329 states to 6329 states and 7671 transitions. [2023-12-25 07:19:44,853 INFO L78 Accepts]: Start accepts. Automaton has 6329 states and 7671 transitions. Word has length 171 [2023-12-25 07:19:44,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:44,854 INFO L495 AbstractCegarLoop]: Abstraction has 6329 states and 7671 transitions. [2023-12-25 07:19:44,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-25 07:19:44,854 INFO L276 IsEmpty]: Start isEmpty. Operand 6329 states and 7671 transitions. [2023-12-25 07:19:44,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-25 07:19:44,854 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:44,855 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] [2023-12-25 07:19:44,859 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 (43)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:45,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:45,059 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:45,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:45,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1885062208, now seen corresponding path program 1 times [2023-12-25 07:19:45,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:45,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305385121] [2023-12-25 07:19:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:45,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:45,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:45,062 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:45,066 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 (44)] Waiting until timeout for monitored process [2023-12-25 07:19:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:45,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:19:45,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 07:19:45,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:45,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:45,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305385121] [2023-12-25 07:19:45,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305385121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:45,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:45,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 07:19:45,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841676429] [2023-12-25 07:19:45,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:45,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:19:45,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:45,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:19:45,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:19:45,374 INFO L87 Difference]: Start difference. First operand 6329 states and 7671 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-25 07:19:45,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:45,886 INFO L93 Difference]: Finished difference Result 18844 states and 22917 transitions. [2023-12-25 07:19:45,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:19:45,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 171 [2023-12-25 07:19:45,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:45,914 INFO L225 Difference]: With dead ends: 18844 [2023-12-25 07:19:45,914 INFO L226 Difference]: Without dead ends: 12535 [2023-12-25 07:19:45,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:19:45,933 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 343 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:45,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 928 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:19:45,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12535 states. [2023-12-25 07:19:46,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12535 to 12531. [2023-12-25 07:19:46,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12531 states, 11988 states have (on average 1.2124624624624625) internal successors, (14535), 11998 states have internal predecessors, (14535), 282 states have call successors, (282), 257 states have call predecessors, (282), 260 states have return successors, (284), 276 states have call predecessors, (284), 280 states have call successors, (284) [2023-12-25 07:19:46,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12531 states to 12531 states and 15101 transitions. [2023-12-25 07:19:46,456 INFO L78 Accepts]: Start accepts. Automaton has 12531 states and 15101 transitions. Word has length 171 [2023-12-25 07:19:46,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:46,456 INFO L495 AbstractCegarLoop]: Abstraction has 12531 states and 15101 transitions. [2023-12-25 07:19:46,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-25 07:19:46,456 INFO L276 IsEmpty]: Start isEmpty. Operand 12531 states and 15101 transitions. [2023-12-25 07:19:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-25 07:19:46,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:46,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:19:46,468 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 (44)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:46,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:46,663 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:46,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:46,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1661818708, now seen corresponding path program 1 times [2023-12-25 07:19:46,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:46,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035019468] [2023-12-25 07:19:46,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:46,664 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:46,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:46,665 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:46,669 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 (45)] Waiting until timeout for monitored process [2023-12-25 07:19:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:46,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:19:46,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-25 07:19:47,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:47,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:47,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035019468] [2023-12-25 07:19:47,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035019468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:47,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:47,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:47,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575851188] [2023-12-25 07:19:47,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:47,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:47,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:47,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:47,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:47,082 INFO L87 Difference]: Start difference. First operand 12531 states and 15101 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-25 07:19:48,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:48,390 INFO L93 Difference]: Finished difference Result 37299 states and 44889 transitions. [2023-12-25 07:19:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:48,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 275 [2023-12-25 07:19:48,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:48,440 INFO L225 Difference]: With dead ends: 37299 [2023-12-25 07:19:48,440 INFO L226 Difference]: Without dead ends: 24789 [2023-12-25 07:19:48,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 273 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 07:19:48,461 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 706 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:48,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1437 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-25 07:19:48,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24789 states. [2023-12-25 07:19:49,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24789 to 24785. [2023-12-25 07:19:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24785 states, 23719 states have (on average 1.2077659260508453) internal successors, (28647), 23746 states have internal predecessors, (28647), 545 states have call successors, (545), 497 states have call predecessors, (545), 520 states have return successors, (591), 543 states have call predecessors, (591), 543 states have call successors, (591) [2023-12-25 07:19:49,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24785 states to 24785 states and 29783 transitions. [2023-12-25 07:19:49,472 INFO L78 Accepts]: Start accepts. Automaton has 24785 states and 29783 transitions. Word has length 275 [2023-12-25 07:19:49,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:49,472 INFO L495 AbstractCegarLoop]: Abstraction has 24785 states and 29783 transitions. [2023-12-25 07:19:49,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-25 07:19:49,472 INFO L276 IsEmpty]: Start isEmpty. Operand 24785 states and 29783 transitions. [2023-12-25 07:19:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-12-25 07:19:49,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:49,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:19:49,490 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 (45)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:49,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:49,690 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:49,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:49,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1251007402, now seen corresponding path program 1 times [2023-12-25 07:19:49,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:49,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538959176] [2023-12-25 07:19:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:49,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:49,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:49,692 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:49,722 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 (46)] Waiting until timeout for monitored process [2023-12-25 07:19:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:49,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:19:49,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-25 07:19:49,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:49,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:49,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538959176] [2023-12-25 07:19:49,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538959176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:49,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:49,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 07:19:49,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132830463] [2023-12-25 07:19:49,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:49,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:19:49,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:49,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:19:49,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:19:49,869 INFO L87 Difference]: Start difference. First operand 24785 states and 29783 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-25 07:19:50,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:50,901 INFO L93 Difference]: Finished difference Result 49533 states and 59498 transitions. [2023-12-25 07:19:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:19:50,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 275 [2023-12-25 07:19:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:50,962 INFO L225 Difference]: With dead ends: 49533 [2023-12-25 07:19:50,963 INFO L226 Difference]: Without dead ends: 24769 [2023-12-25 07:19:50,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:19:50,990 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 526 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:50,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 485 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:19:51,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24769 states. [2023-12-25 07:19:51,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24769 to 24769. [2023-12-25 07:19:51,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24769 states, 23706 states have (on average 1.2073736606766219) internal successors, (28622), 23732 states have internal predecessors, (28622), 542 states have call successors, (542), 497 states have call predecessors, (542), 520 states have return successors, (588), 540 states have call predecessors, (588), 540 states have call successors, (588) [2023-12-25 07:19:52,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24769 states to 24769 states and 29752 transitions. [2023-12-25 07:19:52,010 INFO L78 Accepts]: Start accepts. Automaton has 24769 states and 29752 transitions. Word has length 275 [2023-12-25 07:19:52,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:52,010 INFO L495 AbstractCegarLoop]: Abstraction has 24769 states and 29752 transitions. [2023-12-25 07:19:52,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-25 07:19:52,010 INFO L276 IsEmpty]: Start isEmpty. Operand 24769 states and 29752 transitions. [2023-12-25 07:19:52,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-25 07:19:52,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:52,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:19:52,048 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 (46)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:52,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:52,228 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:52,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:52,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1855470905, now seen corresponding path program 1 times [2023-12-25 07:19:52,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:52,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606020705] [2023-12-25 07:19:52,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:52,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:52,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:52,231 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:52,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-12-25 07:19:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:52,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:19:52,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-25 07:19:52,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:52,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:52,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606020705] [2023-12-25 07:19:52,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606020705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:52,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:52,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:19:52,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813628711] [2023-12-25 07:19:52,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:52,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:19:52,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:52,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:19:52,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:19:52,708 INFO L87 Difference]: Start difference. First operand 24769 states and 29752 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-25 07:19:55,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:19:55,353 INFO L93 Difference]: Finished difference Result 73196 states and 87866 transitions. [2023-12-25 07:19:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:19:55,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 277 [2023-12-25 07:19:55,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:19:55,471 INFO L225 Difference]: With dead ends: 73196 [2023-12-25 07:19:55,472 INFO L226 Difference]: Without dead ends: 48448 [2023-12-25 07:19:55,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 275 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 07:19:55,507 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 701 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:19:55,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 1403 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:19:55,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48448 states. [2023-12-25 07:19:57,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48448 to 48444. [2023-12-25 07:19:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48444 states, 46370 states have (on average 1.2048307095104593) internal successors, (55868), 46429 states have internal predecessors, (55868), 1049 states have call successors, (1049), 961 states have call predecessors, (1049), 1024 states have return successors, (1183), 1055 states have call predecessors, (1183), 1047 states have call successors, (1183) [2023-12-25 07:19:57,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48444 states to 48444 states and 58100 transitions. [2023-12-25 07:19:57,553 INFO L78 Accepts]: Start accepts. Automaton has 48444 states and 58100 transitions. Word has length 277 [2023-12-25 07:19:57,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:19:57,553 INFO L495 AbstractCegarLoop]: Abstraction has 48444 states and 58100 transitions. [2023-12-25 07:19:57,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-25 07:19:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand 48444 states and 58100 transitions. [2023-12-25 07:19:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-25 07:19:57,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:19:57,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:19:57,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2023-12-25 07:19:57,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:57,781 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:19:57,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:19:57,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1752174711, now seen corresponding path program 1 times [2023-12-25 07:19:57,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:19:57,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005592679] [2023-12-25 07:19:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:19:57,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:19:57,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:19:57,783 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:19:57,785 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 (48)] Waiting until timeout for monitored process [2023-12-25 07:19:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:19:57,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:19:57,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:19:57,954 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-25 07:19:57,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:19:57,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:19:57,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005592679] [2023-12-25 07:19:57,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005592679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:19:57,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:19:57,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 07:19:57,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991770894] [2023-12-25 07:19:57,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:19:57,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:19:57,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:19:57,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:19:57,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:19:57,955 INFO L87 Difference]: Start difference. First operand 48444 states and 58100 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-25 07:20:00,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:20:00,045 INFO L93 Difference]: Finished difference Result 96852 states and 116135 transitions. [2023-12-25 07:20:00,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:20:00,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 277 [2023-12-25 07:20:00,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:20:00,162 INFO L225 Difference]: With dead ends: 96852 [2023-12-25 07:20:00,162 INFO L226 Difference]: Without dead ends: 48429 [2023-12-25 07:20:00,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:20:00,197 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 524 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 07:20:00,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 484 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 07:20:00,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48429 states. [2023-12-25 07:20:02,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48429 to 48429. [2023-12-25 07:20:02,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48429 states, 46358 states have (on average 1.2046464472151517) internal successors, (55845), 46416 states have internal predecessors, (55845), 1046 states have call successors, (1046), 961 states have call predecessors, (1046), 1024 states have return successors, (1180), 1052 states have call predecessors, (1180), 1044 states have call successors, (1180) [2023-12-25 07:20:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48429 states to 48429 states and 58071 transitions. [2023-12-25 07:20:02,561 INFO L78 Accepts]: Start accepts. Automaton has 48429 states and 58071 transitions. Word has length 277 [2023-12-25 07:20:02,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:20:02,562 INFO L495 AbstractCegarLoop]: Abstraction has 48429 states and 58071 transitions. [2023-12-25 07:20:02,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-25 07:20:02,562 INFO L276 IsEmpty]: Start isEmpty. Operand 48429 states and 58071 transitions. [2023-12-25 07:20:02,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-25 07:20:02,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:20:02,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:20:02,587 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 (48)] Forceful destruction successful, exit code 0 [2023-12-25 07:20:02,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:20:02,786 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:20:02,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:20:02,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1185321940, now seen corresponding path program 1 times [2023-12-25 07:20:02,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:20:02,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019278034] [2023-12-25 07:20:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:20:02,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:20:02,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:20:02,788 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:20:02,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2023-12-25 07:20:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:20:02,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:20:02,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:20:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-25 07:20:03,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:20:03,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:20:03,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019278034] [2023-12-25 07:20:03,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019278034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:20:03,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:20:03,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:20:03,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652264717] [2023-12-25 07:20:03,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:20:03,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:20:03,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:20:03,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:20:03,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:20:03,202 INFO L87 Difference]: Start difference. First operand 48429 states and 58071 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-25 07:20:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:20:07,217 INFO L93 Difference]: Finished difference Result 143155 states and 171607 transitions. [2023-12-25 07:20:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:20:07,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 279 [2023-12-25 07:20:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:20:07,380 INFO L225 Difference]: With dead ends: 143155 [2023-12-25 07:20:07,380 INFO L226 Difference]: Without dead ends: 94747 [2023-12-25 07:20:07,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 277 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 07:20:07,420 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 694 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-25 07:20:07,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1371 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-25 07:20:07,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94747 states. [2023-12-25 07:20:11,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94747 to 94743. [2023-12-25 07:20:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94743 states, 90701 states have (on average 1.203173063141531) internal successors, (109129), 90832 states have internal predecessors, (109129), 2025 states have call successors, (2025), 1857 states have call predecessors, (2025), 2016 states have return successors, (2351), 2055 states have call predecessors, (2351), 2023 states have call successors, (2351) [2023-12-25 07:20:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94743 states to 94743 states and 113505 transitions. [2023-12-25 07:20:11,759 INFO L78 Accepts]: Start accepts. Automaton has 94743 states and 113505 transitions. Word has length 279 [2023-12-25 07:20:11,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:20:11,759 INFO L495 AbstractCegarLoop]: Abstraction has 94743 states and 113505 transitions. [2023-12-25 07:20:11,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-25 07:20:11,759 INFO L276 IsEmpty]: Start isEmpty. Operand 94743 states and 113505 transitions. [2023-12-25 07:20:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-25 07:20:11,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:20:11,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:20:11,797 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 (49)] Ended with exit code 0 [2023-12-25 07:20:11,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:20:11,997 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:20:11,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:20:11,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2016860074, now seen corresponding path program 1 times [2023-12-25 07:20:11,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:20:11,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307913538] [2023-12-25 07:20:11,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:20:11,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:20:11,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:20:11,999 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:20:12,015 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 (50)] Waiting until timeout for monitored process [2023-12-25 07:20:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:20:12,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:20:12,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:20:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-25 07:20:12,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:20:12,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:20:12,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307913538] [2023-12-25 07:20:12,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307913538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:20:12,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:20:12,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 07:20:12,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486512590] [2023-12-25 07:20:12,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:20:12,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:20:12,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:20:12,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:20:12,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:20:12,173 INFO L87 Difference]: Start difference. First operand 94743 states and 113505 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-25 07:20:16,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:20:16,012 INFO L93 Difference]: Finished difference Result 189451 states and 226948 transitions. [2023-12-25 07:20:16,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 07:20:16,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 279 [2023-12-25 07:20:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:20:16,210 INFO L225 Difference]: With dead ends: 189451 [2023-12-25 07:20:16,211 INFO L226 Difference]: Without dead ends: 94729 [2023-12-25 07:20:16,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:20:16,298 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 522 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 07:20:16,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 483 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 07:20:16,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94729 states. [2023-12-25 07:20:20,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94729 to 94729. [2023-12-25 07:20:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94729 states, 90690 states have (on average 1.2030874407321646) internal successors, (109108), 90820 states have internal predecessors, (109108), 2022 states have call successors, (2022), 1857 states have call predecessors, (2022), 2016 states have return successors, (2348), 2052 states have call predecessors, (2348), 2020 states have call successors, (2348) [2023-12-25 07:20:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94729 states to 94729 states and 113478 transitions. [2023-12-25 07:20:20,602 INFO L78 Accepts]: Start accepts. Automaton has 94729 states and 113478 transitions. Word has length 279 [2023-12-25 07:20:20,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:20:20,603 INFO L495 AbstractCegarLoop]: Abstraction has 94729 states and 113478 transitions. [2023-12-25 07:20:20,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-25 07:20:20,603 INFO L276 IsEmpty]: Start isEmpty. Operand 94729 states and 113478 transitions. [2023-12-25 07:20:20,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-25 07:20:20,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:20:20,634 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:20:20,641 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 (50)] Forceful destruction successful, exit code 0 [2023-12-25 07:20:20,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:20:20,840 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:20:20,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:20:20,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1349960441, now seen corresponding path program 1 times [2023-12-25 07:20:20,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:20:20,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653560226] [2023-12-25 07:20:20,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:20:20,841 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:20:20,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:20:20,842 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:20:20,845 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 (51)] Waiting until timeout for monitored process [2023-12-25 07:20:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:20:21,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-25 07:20:21,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:20:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-25 07:20:21,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:20:21,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:20:21,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653560226] [2023-12-25 07:20:21,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653560226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:20:21,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:20:21,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 07:20:21,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360654835] [2023-12-25 07:20:21,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:20:21,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 07:20:21,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:20:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 07:20:21,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 07:20:21,278 INFO L87 Difference]: Start difference. First operand 94729 states and 113478 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-25 07:20:28,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 07:20:28,949 INFO L93 Difference]: Finished difference Result 330374 states and 394853 transitions. [2023-12-25 07:20:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-25 07:20:28,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 281 [2023-12-25 07:20:28,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 07:20:29,668 INFO L225 Difference]: With dead ends: 330374 [2023-12-25 07:20:29,668 INFO L226 Difference]: Without dead ends: 235666 [2023-12-25 07:20:29,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 279 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 07:20:29,764 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 702 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 07:20:29,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 1388 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 07:20:29,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235666 states. [2023-12-25 07:20:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235666 to 231726. [2023-12-25 07:20:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231726 states, 222308 states have (on average 1.1987962646418482) internal successors, (266502), 223399 states have internal predecessors, (266502), 3913 states have call successors, (3913), 3585 states have call predecessors, (3913), 5504 states have return successors, (6224), 4743 states have call predecessors, (6224), 3911 states have call successors, (6224) [2023-12-25 07:20:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231726 states to 231726 states and 276639 transitions. [2023-12-25 07:20:39,067 INFO L78 Accepts]: Start accepts. Automaton has 231726 states and 276639 transitions. Word has length 281 [2023-12-25 07:20:39,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 07:20:39,068 INFO L495 AbstractCegarLoop]: Abstraction has 231726 states and 276639 transitions. [2023-12-25 07:20:39,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-25 07:20:39,068 INFO L276 IsEmpty]: Start isEmpty. Operand 231726 states and 276639 transitions. [2023-12-25 07:20:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-25 07:20:39,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 07:20:39,158 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 07:20:39,163 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 (51)] Ended with exit code 0 [2023-12-25 07:20:39,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:20:39,363 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 07:20:39,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 07:20:39,364 INFO L85 PathProgramCache]: Analyzing trace with hash 866565815, now seen corresponding path program 1 times [2023-12-25 07:20:39,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 07:20:39,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431034992] [2023-12-25 07:20:39,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 07:20:39,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 07:20:39,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 07:20:39,366 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 07:20:39,367 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 (52)] Waiting until timeout for monitored process [2023-12-25 07:20:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 07:20:39,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-25 07:20:39,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 07:20:39,543 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-12-25 07:20:39,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 07:20:39,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 07:20:39,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431034992] [2023-12-25 07:20:39,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431034992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 07:20:39,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 07:20:39,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 07:20:39,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320514185] [2023-12-25 07:20:39,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 07:20:39,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 07:20:39,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 07:20:39,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 07:20:39,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 07:20:39,545 INFO L87 Difference]: Start difference. First operand 231726 states and 276639 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 2 states have internal predecessors, (185), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)