/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/combinations/Problem05_label44+token_ring.10.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 21:56:56,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 21:56:56,898 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 21:56:56,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 21:56:56,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 21:56:56,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 21:56:56,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 21:56:56,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 21:56:56,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 21:56:56,930 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 21:56:56,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 21:56:56,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 21:56:56,932 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 21:56:56,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 21:56:56,933 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 21:56:56,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 21:56:56,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 21:56:56,934 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 21:56:56,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 21:56:56,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 21:56:56,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 21:56:56,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 21:56:56,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 21:56:56,936 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 21:56:56,936 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 21:56:56,936 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 21:56:56,936 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 21:56:56,936 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 21:56:56,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 21:56:56,937 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 21:56:56,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 21:56:56,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 21:56:56,938 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 21:56:56,938 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 21:56:56,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:56:56,938 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 21:56:56,938 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 21:56:56,938 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 21:56:56,939 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 21:56:56,939 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 21:56:56,939 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 21:56:56,939 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 21:56:56,939 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 21:56:56,939 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 21:56:56,939 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 21:56:56,940 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 21:56:56,940 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 21:56:57,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 21:56:57,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 21:56:57,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 21:56:57,167 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 21:56:57,169 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 21:56:57,171 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.10.cil-2.c [2023-12-21 21:56:58,210 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 21:56:58,639 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 21:56:58,639 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.10.cil-2.c [2023-12-21 21:56:58,694 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7efa877c0/4fbda03ab2084421a8f2a09b6cc6f3ad/FLAG868b49e76 [2023-12-21 21:56:58,774 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7efa877c0/4fbda03ab2084421a8f2a09b6cc6f3ad [2023-12-21 21:56:58,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 21:56:58,778 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 21:56:58,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 21:56:58,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 21:56:58,784 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 21:56:58,785 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:56:58" (1/1) ... [2023-12-21 21:56:58,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55321e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:56:58, skipping insertion in model container [2023-12-21 21:56:58,786 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:56:58" (1/1) ... [2023-12-21 21:56:58,953 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 21:57:00,129 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.10.cil-2.c[377340,377353] [2023-12-21 21:57:00,157 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.10.cil-2.c[383339,383352] [2023-12-21 21:57:00,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:57:00,386 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 21:57:00,970 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.10.cil-2.c[377340,377353] [2023-12-21 21:57:00,982 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.10.cil-2.c[383339,383352] [2023-12-21 21:57:00,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:57:01,049 INFO L206 MainTranslator]: Completed translation [2023-12-21 21:57:01,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01 WrapperNode [2023-12-21 21:57:01,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 21:57:01,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 21:57:01,050 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 21:57:01,050 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 21:57:01,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01" (1/1) ... [2023-12-21 21:57:01,141 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01" (1/1) ... [2023-12-21 21:57:01,481 INFO L138 Inliner]: procedures = 65, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13075 [2023-12-21 21:57:01,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 21:57:01,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 21:57:01,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 21:57:01,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 21:57:01,490 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01" (1/1) ... [2023-12-21 21:57:01,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01" (1/1) ... [2023-12-21 21:57:01,523 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01" (1/1) ... [2023-12-21 21:57:01,671 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]. [2023-12-21 21:57:01,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01" (1/1) ... [2023-12-21 21:57:01,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01" (1/1) ... [2023-12-21 21:57:01,784 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01" (1/1) ... [2023-12-21 21:57:01,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01" (1/1) ... [2023-12-21 21:57:01,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01" (1/1) ... [2023-12-21 21:57:01,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01" (1/1) ... [2023-12-21 21:57:01,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 21:57:01,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 21:57:01,997 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 21:57:01,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 21:57:01,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01" (1/1) ... [2023-12-21 21:57:02,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:57:02,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 21:57:02,033 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) [2023-12-21 21:57:02,065 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 [2023-12-21 21:57:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 21:57:02,070 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 21:57:02,070 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 21:57:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 21:57:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 21:57:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 21:57:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 21:57:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 21:57:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 21:57:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 21:57:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 21:57:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 21:57:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 21:57:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 21:57:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 21:57:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 21:57:02,161 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 21:57:02,163 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 21:57:09,482 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 21:57:09,548 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 21:57:09,548 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-12-21 21:57:09,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:57:09 BoogieIcfgContainer [2023-12-21 21:57:09,548 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 21:57:09,550 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 21:57:09,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 21:57:09,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 21:57:09,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:56:58" (1/3) ... [2023-12-21 21:57:09,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724ac581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:57:09, skipping insertion in model container [2023-12-21 21:57:09,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:01" (2/3) ... [2023-12-21 21:57:09,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724ac581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:57:09, skipping insertion in model container [2023-12-21 21:57:09,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:57:09" (3/3) ... [2023-12-21 21:57:09,554 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.10.cil-2.c [2023-12-21 21:57:09,566 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 21:57:09,566 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 21:57:09,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 21:57:09,634 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;@de35544, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 21:57:09,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 21:57:09,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 2425 states, 2392 states have (on average 1.8775083612040133) internal successors, (4491), 2395 states have internal predecessors, (4491), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 21:57:09,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:09,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:09,664 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] [2023-12-21 21:57:09,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:09,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:09,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1401539103, now seen corresponding path program 1 times [2023-12-21 21:57:09,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:09,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745952313] [2023-12-21 21:57:09,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:09,681 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 [2023-12-21 21:57:09,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:09,683 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) [2023-12-21 21:57:09,704 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 [2023-12-21 21:57:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:09,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:57:09,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:09,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:09,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:09,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745952313] [2023-12-21 21:57:09,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745952313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:09,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:09,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:57:09,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870105658] [2023-12-21 21:57:09,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:09,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:57:09,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:10,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:57:10,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:57:10,008 INFO L87 Difference]: Start difference. First operand has 2425 states, 2392 states have (on average 1.8775083612040133) internal successors, (4491), 2395 states have internal predecessors, (4491), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:10,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:10,194 INFO L93 Difference]: Finished difference Result 4842 states and 9061 transitions. [2023-12-21 21:57:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:57:10,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:10,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:10,215 INFO L225 Difference]: With dead ends: 4842 [2023-12-21 21:57:10,216 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 21:57:10,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:57:10,224 INFO L413 NwaCegarLoop]: 4407 mSDtfsCounter, 478 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 8366 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:10,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 8366 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:57:10,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 21:57:10,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 21:57:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8396818752616158) internal successors, (4395), 2391 states have internal predecessors, (4395), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 21:57:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4443 transitions. [2023-12-21 21:57:10,314 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4443 transitions. Word has length 141 [2023-12-21 21:57:10,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:10,315 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4443 transitions. [2023-12-21 21:57:10,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4443 transitions. [2023-12-21 21:57:10,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:10,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:10,317 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] [2023-12-21 21:57:10,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-21 21:57:10,522 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 [2023-12-21 21:57:10,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:10,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash 726378977, now seen corresponding path program 1 times [2023-12-21 21:57:10,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:10,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935128436] [2023-12-21 21:57:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:10,524 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 [2023-12-21 21:57:10,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:10,526 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) [2023-12-21 21:57:10,527 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 [2023-12-21 21:57:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:10,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:10,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:10,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:10,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:10,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935128436] [2023-12-21 21:57:10,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935128436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:10,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:10,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:10,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122804357] [2023-12-21 21:57:10,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:10,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:10,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:10,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:10,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:10,808 INFO L87 Difference]: Start difference. First operand 2421 states and 4443 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:11,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:11,297 INFO L93 Difference]: Finished difference Result 2705 states and 4904 transitions. [2023-12-21 21:57:11,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:11,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:11,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:11,306 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 21:57:11,307 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 21:57:11,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:11,309 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 4611 mSDsluCounter, 8388 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4629 SdHoareTripleChecker+Valid, 12648 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:11,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4629 Valid, 12648 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:57:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 21:57:11,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 21:57:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8384261197153622) internal successors, (4392), 2391 states have internal predecessors, (4392), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 21:57:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4440 transitions. [2023-12-21 21:57:11,357 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4440 transitions. Word has length 141 [2023-12-21 21:57:11,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:11,358 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4440 transitions. [2023-12-21 21:57:11,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:11,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4440 transitions. [2023-12-21 21:57:11,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:11,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:11,359 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] [2023-12-21 21:57:11,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-21 21:57:11,564 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 [2023-12-21 21:57:11,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:11,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:11,571 INFO L85 PathProgramCache]: Analyzing trace with hash 185066785, now seen corresponding path program 1 times [2023-12-21 21:57:11,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:11,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542254450] [2023-12-21 21:57:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:11,574 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 [2023-12-21 21:57:11,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:11,589 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) [2023-12-21 21:57:11,639 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 [2023-12-21 21:57:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:11,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:11,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:11,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:11,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:11,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542254450] [2023-12-21 21:57:11,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542254450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:11,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:11,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:11,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237618535] [2023-12-21 21:57:11,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:11,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:11,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:11,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:11,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:11,811 INFO L87 Difference]: Start difference. First operand 2421 states and 4440 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:12,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:12,374 INFO L93 Difference]: Finished difference Result 2705 states and 4898 transitions. [2023-12-21 21:57:12,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:12,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:12,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:12,382 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 21:57:12,382 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 21:57:12,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:12,384 INFO L413 NwaCegarLoop]: 4257 mSDtfsCounter, 4605 mSDsluCounter, 8384 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4623 SdHoareTripleChecker+Valid, 12641 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:12,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4623 Valid, 12641 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:57:12,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 21:57:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 21:57:12,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8371703641691084) internal successors, (4389), 2391 states have internal predecessors, (4389), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 21:57:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4437 transitions. [2023-12-21 21:57:12,423 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4437 transitions. Word has length 141 [2023-12-21 21:57:12,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:12,423 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4437 transitions. [2023-12-21 21:57:12,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:12,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4437 transitions. [2023-12-21 21:57:12,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:12,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:12,424 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] [2023-12-21 21:57:12,429 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 [2023-12-21 21:57:12,628 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 [2023-12-21 21:57:12,629 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:12,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:12,630 INFO L85 PathProgramCache]: Analyzing trace with hash -907568417, now seen corresponding path program 1 times [2023-12-21 21:57:12,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:12,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27036054] [2023-12-21 21:57:12,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:12,630 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 [2023-12-21 21:57:12,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:12,631 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) [2023-12-21 21:57:12,633 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 [2023-12-21 21:57:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:12,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:12,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:12,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:12,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:12,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27036054] [2023-12-21 21:57:12,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27036054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:12,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:12,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:12,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066761004] [2023-12-21 21:57:12,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:12,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:12,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:12,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:12,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:12,818 INFO L87 Difference]: Start difference. First operand 2421 states and 4437 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:13,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:13,218 INFO L93 Difference]: Finished difference Result 2705 states and 4892 transitions. [2023-12-21 21:57:13,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:13,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:13,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:13,225 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 21:57:13,225 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 21:57:13,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:13,227 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 4599 mSDsluCounter, 8380 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 12634 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:13,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 12634 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:57:13,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 21:57:13,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 21:57:13,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8359146086228548) internal successors, (4386), 2391 states have internal predecessors, (4386), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 21:57:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4434 transitions. [2023-12-21 21:57:13,267 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4434 transitions. Word has length 141 [2023-12-21 21:57:13,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:13,267 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4434 transitions. [2023-12-21 21:57:13,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4434 transitions. [2023-12-21 21:57:13,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:13,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:13,268 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] [2023-12-21 21:57:13,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 21:57:13,472 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 [2023-12-21 21:57:13,473 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:13,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:13,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1710859807, now seen corresponding path program 1 times [2023-12-21 21:57:13,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:13,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012958874] [2023-12-21 21:57:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:13,474 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 [2023-12-21 21:57:13,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:13,475 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) [2023-12-21 21:57:13,476 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 [2023-12-21 21:57:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:13,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:13,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:13,663 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:13,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:13,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012958874] [2023-12-21 21:57:13,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012958874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:13,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:13,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:13,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433553081] [2023-12-21 21:57:13,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:13,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:13,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:13,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:13,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:13,665 INFO L87 Difference]: Start difference. First operand 2421 states and 4434 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:14,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:14,038 INFO L93 Difference]: Finished difference Result 2705 states and 4886 transitions. [2023-12-21 21:57:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:14,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:14,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:14,049 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 21:57:14,049 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 21:57:14,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:14,052 INFO L413 NwaCegarLoop]: 4251 mSDtfsCounter, 4593 mSDsluCounter, 8376 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 12627 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:14,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4611 Valid, 12627 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:57:14,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 21:57:14,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 21:57:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.834658853076601) internal successors, (4383), 2391 states have internal predecessors, (4383), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 21:57:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4431 transitions. [2023-12-21 21:57:14,109 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4431 transitions. Word has length 141 [2023-12-21 21:57:14,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:14,109 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4431 transitions. [2023-12-21 21:57:14,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4431 transitions. [2023-12-21 21:57:14,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:14,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:14,111 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] [2023-12-21 21:57:14,117 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 [2023-12-21 21:57:14,316 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 [2023-12-21 21:57:14,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:14,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:14,317 INFO L85 PathProgramCache]: Analyzing trace with hash -975621409, now seen corresponding path program 1 times [2023-12-21 21:57:14,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:14,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010726907] [2023-12-21 21:57:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:14,318 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 [2023-12-21 21:57:14,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:14,319 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) [2023-12-21 21:57:14,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 21:57:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:14,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:14,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:14,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:14,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:14,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010726907] [2023-12-21 21:57:14,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010726907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:14,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:14,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:14,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747951669] [2023-12-21 21:57:14,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:14,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:14,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:14,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:14,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:14,528 INFO L87 Difference]: Start difference. First operand 2421 states and 4431 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:14,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:14,901 INFO L93 Difference]: Finished difference Result 2705 states and 4880 transitions. [2023-12-21 21:57:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:14,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:14,908 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 21:57:14,908 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 21:57:14,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:14,910 INFO L413 NwaCegarLoop]: 4248 mSDtfsCounter, 4587 mSDsluCounter, 8372 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4605 SdHoareTripleChecker+Valid, 12620 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:14,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4605 Valid, 12620 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:57:14,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 21:57:14,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 21:57:14,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8334030975303475) internal successors, (4380), 2391 states have internal predecessors, (4380), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 21:57:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4428 transitions. [2023-12-21 21:57:14,949 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4428 transitions. Word has length 141 [2023-12-21 21:57:14,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:14,949 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4428 transitions. [2023-12-21 21:57:14,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:14,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4428 transitions. [2023-12-21 21:57:14,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:14,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:14,950 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] [2023-12-21 21:57:14,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-21 21:57:15,155 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 [2023-12-21 21:57:15,155 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:15,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:15,156 INFO L85 PathProgramCache]: Analyzing trace with hash -646640097, now seen corresponding path program 1 times [2023-12-21 21:57:15,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:15,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139064251] [2023-12-21 21:57:15,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:15,156 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 [2023-12-21 21:57:15,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:15,157 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) [2023-12-21 21:57:15,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 21:57:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:15,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:15,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:15,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:15,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:15,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139064251] [2023-12-21 21:57:15,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139064251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:15,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:15,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:15,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632440260] [2023-12-21 21:57:15,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:15,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:15,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:15,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:15,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:15,355 INFO L87 Difference]: Start difference. First operand 2421 states and 4428 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:15,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:15,724 INFO L93 Difference]: Finished difference Result 2705 states and 4874 transitions. [2023-12-21 21:57:15,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:15,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:15,731 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 21:57:15,731 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 21:57:15,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:15,733 INFO L413 NwaCegarLoop]: 4245 mSDtfsCounter, 4581 mSDsluCounter, 8368 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4599 SdHoareTripleChecker+Valid, 12613 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:15,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4599 Valid, 12613 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:57:15,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 21:57:15,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 21:57:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8321473419840937) internal successors, (4377), 2391 states have internal predecessors, (4377), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 21:57:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4425 transitions. [2023-12-21 21:57:15,777 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4425 transitions. Word has length 141 [2023-12-21 21:57:15,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:15,777 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4425 transitions. [2023-12-21 21:57:15,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4425 transitions. [2023-12-21 21:57:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:15,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:15,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:57:15,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-21 21:57:15,984 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 [2023-12-21 21:57:15,984 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:15,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:15,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1051669793, now seen corresponding path program 1 times [2023-12-21 21:57:15,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:15,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101653894] [2023-12-21 21:57:15,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:15,985 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 [2023-12-21 21:57:15,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:16,002 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) [2023-12-21 21:57:16,036 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 [2023-12-21 21:57:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:16,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:16,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:16,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:16,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:16,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101653894] [2023-12-21 21:57:16,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101653894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:16,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:16,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:16,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984846210] [2023-12-21 21:57:16,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:16,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:16,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:16,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:16,221 INFO L87 Difference]: Start difference. First operand 2421 states and 4425 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:16,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:16,611 INFO L93 Difference]: Finished difference Result 2705 states and 4868 transitions. [2023-12-21 21:57:16,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:16,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:16,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:16,621 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 21:57:16,622 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 21:57:16,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:16,624 INFO L413 NwaCegarLoop]: 4242 mSDtfsCounter, 4575 mSDsluCounter, 8364 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4593 SdHoareTripleChecker+Valid, 12606 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:16,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4593 Valid, 12606 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:57:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 21:57:16,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 21:57:16,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8308915864378401) internal successors, (4374), 2391 states have internal predecessors, (4374), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 21:57:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4422 transitions. [2023-12-21 21:57:16,679 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4422 transitions. Word has length 141 [2023-12-21 21:57:16,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:16,681 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4422 transitions. [2023-12-21 21:57:16,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4422 transitions. [2023-12-21 21:57:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:16,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:16,683 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] [2023-12-21 21:57:16,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 21:57:16,888 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 [2023-12-21 21:57:16,889 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:16,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:16,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1152022047, now seen corresponding path program 1 times [2023-12-21 21:57:16,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:16,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679897199] [2023-12-21 21:57:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:16,890 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 [2023-12-21 21:57:16,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:16,891 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) [2023-12-21 21:57:16,912 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 (10)] Waiting until timeout for monitored process [2023-12-21 21:57:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:17,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:17,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:17,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:17,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:17,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679897199] [2023-12-21 21:57:17,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679897199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:17,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:17,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:17,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169972319] [2023-12-21 21:57:17,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:17,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:17,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:17,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:17,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:17,069 INFO L87 Difference]: Start difference. First operand 2421 states and 4422 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:17,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:17,513 INFO L93 Difference]: Finished difference Result 2705 states and 4862 transitions. [2023-12-21 21:57:17,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:17,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:17,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:17,520 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 21:57:17,521 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 21:57:17,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:17,522 INFO L413 NwaCegarLoop]: 4239 mSDtfsCounter, 4568 mSDsluCounter, 8360 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4586 SdHoareTripleChecker+Valid, 12599 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:17,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4586 Valid, 12599 Invalid, 466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:57:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 21:57:17,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 21:57:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8296358308915865) internal successors, (4371), 2391 states have internal predecessors, (4371), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 21:57:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4419 transitions. [2023-12-21 21:57:17,575 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4419 transitions. Word has length 141 [2023-12-21 21:57:17,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:17,576 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4419 transitions. [2023-12-21 21:57:17,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4419 transitions. [2023-12-21 21:57:17,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:17,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:17,577 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] [2023-12-21 21:57:17,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-21 21:57:17,782 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 [2023-12-21 21:57:17,783 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:17,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:17,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1393168033, now seen corresponding path program 1 times [2023-12-21 21:57:17,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:17,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933636370] [2023-12-21 21:57:17,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:17,784 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 [2023-12-21 21:57:17,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:17,796 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) [2023-12-21 21:57:17,797 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 [2023-12-21 21:57:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:17,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:17,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:17,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:17,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:17,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933636370] [2023-12-21 21:57:17,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933636370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:17,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:17,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:17,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80094303] [2023-12-21 21:57:17,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:17,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:17,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:17,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:17,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:17,993 INFO L87 Difference]: Start difference. First operand 2421 states and 4419 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:18,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:18,443 INFO L93 Difference]: Finished difference Result 2705 states and 4856 transitions. [2023-12-21 21:57:18,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:18,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:18,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:18,453 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 21:57:18,453 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 21:57:18,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:18,455 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 4562 mSDsluCounter, 8356 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4580 SdHoareTripleChecker+Valid, 12592 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:18,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4580 Valid, 12592 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:57:18,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 21:57:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 21:57:18,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8283800753453328) internal successors, (4368), 2391 states have internal predecessors, (4368), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 21:57:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4416 transitions. [2023-12-21 21:57:18,509 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4416 transitions. Word has length 141 [2023-12-21 21:57:18,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:18,509 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4416 transitions. [2023-12-21 21:57:18,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:18,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4416 transitions. [2023-12-21 21:57:18,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:18,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:18,511 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] [2023-12-21 21:57:18,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 21:57:18,715 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 [2023-12-21 21:57:18,716 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:18,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash -921811683, now seen corresponding path program 1 times [2023-12-21 21:57:18,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:18,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066073705] [2023-12-21 21:57:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:18,717 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 [2023-12-21 21:57:18,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:18,718 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) [2023-12-21 21:57:18,734 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 [2023-12-21 21:57:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:18,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:18,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:18,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:18,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:18,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066073705] [2023-12-21 21:57:18,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066073705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:18,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:18,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:18,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071774300] [2023-12-21 21:57:18,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:18,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:18,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:18,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:18,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:18,904 INFO L87 Difference]: Start difference. First operand 2421 states and 4416 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:19,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:19,450 INFO L93 Difference]: Finished difference Result 2776 states and 4967 transitions. [2023-12-21 21:57:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:57:19,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:19,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:19,457 INFO L225 Difference]: With dead ends: 2776 [2023-12-21 21:57:19,457 INFO L226 Difference]: Without dead ends: 2492 [2023-12-21 21:57:19,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:19,459 INFO L413 NwaCegarLoop]: 4234 mSDtfsCounter, 4652 mSDsluCounter, 8352 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4670 SdHoareTripleChecker+Valid, 12586 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:19,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4670 Valid, 12586 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:57:19,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2023-12-21 21:57:19,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2492. [2023-12-21 21:57:19,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2457 states have (on average 1.8172568172568173) internal successors, (4465), 2459 states have internal predecessors, (4465), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-21 21:57:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 4515 transitions. [2023-12-21 21:57:19,527 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 4515 transitions. Word has length 141 [2023-12-21 21:57:19,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:19,527 INFO L495 AbstractCegarLoop]: Abstraction has 2492 states and 4515 transitions. [2023-12-21 21:57:19,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:19,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 4515 transitions. [2023-12-21 21:57:19,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:19,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:19,529 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] [2023-12-21 21:57:19,548 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 [2023-12-21 21:57:19,749 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 [2023-12-21 21:57:19,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:19,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:19,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1571916028, now seen corresponding path program 1 times [2023-12-21 21:57:19,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:19,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956297236] [2023-12-21 21:57:19,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:19,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:57:19,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:19,752 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) [2023-12-21 21:57:19,753 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 [2023-12-21 21:57:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:19,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:19,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:20,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:20,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:20,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956297236] [2023-12-21 21:57:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956297236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:20,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:20,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:20,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313547066] [2023-12-21 21:57:20,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:20,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:20,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:20,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:20,003 INFO L87 Difference]: Start difference. First operand 2492 states and 4515 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:20,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:20,493 INFO L93 Difference]: Finished difference Result 2918 states and 5165 transitions. [2023-12-21 21:57:20,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:57:20,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:20,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:20,499 INFO L225 Difference]: With dead ends: 2918 [2023-12-21 21:57:20,499 INFO L226 Difference]: Without dead ends: 2563 [2023-12-21 21:57:20,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:20,501 INFO L413 NwaCegarLoop]: 4231 mSDtfsCounter, 4645 mSDsluCounter, 8348 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 12579 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:20,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4663 Valid, 12579 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:57:20,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2023-12-21 21:57:20,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2563. [2023-12-21 21:57:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2525 states have (on average 1.805940594059406) internal successors, (4560), 2527 states have internal predecessors, (4560), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 21:57:20,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 4612 transitions. [2023-12-21 21:57:20,556 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 4612 transitions. Word has length 141 [2023-12-21 21:57:20,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:20,557 INFO L495 AbstractCegarLoop]: Abstraction has 2563 states and 4612 transitions. [2023-12-21 21:57:20,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:20,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 4612 transitions. [2023-12-21 21:57:20,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:20,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:20,559 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] [2023-12-21 21:57:20,563 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 [2023-12-21 21:57:20,762 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 [2023-12-21 21:57:20,763 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:20,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:20,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1363793340, now seen corresponding path program 1 times [2023-12-21 21:57:20,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:20,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131708759] [2023-12-21 21:57:20,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:20,764 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 [2023-12-21 21:57:20,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:20,765 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) [2023-12-21 21:57:20,770 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 [2023-12-21 21:57:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:20,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:20,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:20,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:20,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:20,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131708759] [2023-12-21 21:57:20,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131708759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:20,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:20,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:20,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742762] [2023-12-21 21:57:20,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:20,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:20,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:20,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:20,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:20,964 INFO L87 Difference]: Start difference. First operand 2563 states and 4612 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:21,459 INFO L93 Difference]: Finished difference Result 3060 states and 5359 transitions. [2023-12-21 21:57:21,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:57:21,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:21,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:21,465 INFO L225 Difference]: With dead ends: 3060 [2023-12-21 21:57:21,465 INFO L226 Difference]: Without dead ends: 2634 [2023-12-21 21:57:21,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:21,467 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4639 mSDsluCounter, 8344 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 12572 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:21,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 12572 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:57:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2023-12-21 21:57:21,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2634. [2023-12-21 21:57:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2593 states have (on average 1.7944465869649056) internal successors, (4653), 2595 states have internal predecessors, (4653), 27 states have call successors, (27), 12 states have call predecessors, (27), 12 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-21 21:57:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 4707 transitions. [2023-12-21 21:57:21,520 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 4707 transitions. Word has length 141 [2023-12-21 21:57:21,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:21,520 INFO L495 AbstractCegarLoop]: Abstraction has 2634 states and 4707 transitions. [2023-12-21 21:57:21,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:21,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 4707 transitions. [2023-12-21 21:57:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:21,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:21,521 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] [2023-12-21 21:57:21,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-21 21:57:21,725 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 [2023-12-21 21:57:21,725 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:21,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1309168731, now seen corresponding path program 1 times [2023-12-21 21:57:21,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:21,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507870224] [2023-12-21 21:57:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:21,726 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 [2023-12-21 21:57:21,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:21,727 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) [2023-12-21 21:57:21,761 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 [2023-12-21 21:57:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:21,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:21,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:21,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:21,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:21,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507870224] [2023-12-21 21:57:21,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507870224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:21,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:21,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:21,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005569786] [2023-12-21 21:57:21,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:21,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:21,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:21,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:21,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:21,917 INFO L87 Difference]: Start difference. First operand 2634 states and 4707 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:22,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:22,409 INFO L93 Difference]: Finished difference Result 3202 states and 5549 transitions. [2023-12-21 21:57:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:57:22,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:22,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:22,414 INFO L225 Difference]: With dead ends: 3202 [2023-12-21 21:57:22,414 INFO L226 Difference]: Without dead ends: 2705 [2023-12-21 21:57:22,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:22,416 INFO L413 NwaCegarLoop]: 4225 mSDtfsCounter, 4632 mSDsluCounter, 8340 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4650 SdHoareTripleChecker+Valid, 12565 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:22,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4650 Valid, 12565 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:57:22,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2023-12-21 21:57:22,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2705. [2023-12-21 21:57:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2661 states have (on average 1.7827884254039834) internal successors, (4744), 2663 states have internal predecessors, (4744), 28 states have call successors, (28), 14 states have call predecessors, (28), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-21 21:57:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 4800 transitions. [2023-12-21 21:57:22,530 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 4800 transitions. Word has length 141 [2023-12-21 21:57:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:22,530 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 4800 transitions. [2023-12-21 21:57:22,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 4800 transitions. [2023-12-21 21:57:22,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:22,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:22,532 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] [2023-12-21 21:57:22,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 21:57:22,735 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 [2023-12-21 21:57:22,735 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:22,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:22,736 INFO L85 PathProgramCache]: Analyzing trace with hash 936545884, now seen corresponding path program 1 times [2023-12-21 21:57:22,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:22,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940254493] [2023-12-21 21:57:22,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:22,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:57:22,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:22,738 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) [2023-12-21 21:57:22,769 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 [2023-12-21 21:57:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:22,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:22,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:22,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:22,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:22,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940254493] [2023-12-21 21:57:22,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940254493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:22,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:22,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:22,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293250048] [2023-12-21 21:57:22,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:22,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:22,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:22,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:22,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:22,918 INFO L87 Difference]: Start difference. First operand 2705 states and 4800 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:23,392 INFO L93 Difference]: Finished difference Result 3344 states and 5735 transitions. [2023-12-21 21:57:23,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:57:23,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:23,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:23,397 INFO L225 Difference]: With dead ends: 3344 [2023-12-21 21:57:23,398 INFO L226 Difference]: Without dead ends: 2776 [2023-12-21 21:57:23,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:23,400 INFO L413 NwaCegarLoop]: 4222 mSDtfsCounter, 4625 mSDsluCounter, 8336 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4643 SdHoareTripleChecker+Valid, 12558 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:23,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4643 Valid, 12558 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:57:23,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2023-12-21 21:57:23,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2776. [2023-12-21 21:57:23,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2776 states, 2729 states have (on average 1.770978380359106) internal successors, (4833), 2731 states have internal predecessors, (4833), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-21 21:57:23,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 4891 transitions. [2023-12-21 21:57:23,445 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 4891 transitions. Word has length 141 [2023-12-21 21:57:23,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:23,445 INFO L495 AbstractCegarLoop]: Abstraction has 2776 states and 4891 transitions. [2023-12-21 21:57:23,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:23,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 4891 transitions. [2023-12-21 21:57:23,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:23,446 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:23,447 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] [2023-12-21 21:57:23,454 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 [2023-12-21 21:57:23,651 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 [2023-12-21 21:57:23,651 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:23,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:23,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1339328100, now seen corresponding path program 1 times [2023-12-21 21:57:23,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:23,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949298060] [2023-12-21 21:57:23,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:23,652 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 [2023-12-21 21:57:23,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:23,653 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) [2023-12-21 21:57:23,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-21 21:57:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:23,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:23,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:23,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:23,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:23,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949298060] [2023-12-21 21:57:23,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949298060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:23,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:23,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:23,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131784830] [2023-12-21 21:57:23,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:23,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:23,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:23,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:23,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:23,831 INFO L87 Difference]: Start difference. First operand 2776 states and 4891 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:24,230 INFO L93 Difference]: Finished difference Result 3486 states and 5917 transitions. [2023-12-21 21:57:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:57:24,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:24,234 INFO L225 Difference]: With dead ends: 3486 [2023-12-21 21:57:24,235 INFO L226 Difference]: Without dead ends: 2847 [2023-12-21 21:57:24,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:24,237 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 4617 mSDsluCounter, 8332 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4635 SdHoareTripleChecker+Valid, 12551 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:24,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4635 Valid, 12551 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:57:24,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2023-12-21 21:57:24,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2847. [2023-12-21 21:57:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2847 states, 2797 states have (on average 1.7590275294958884) internal successors, (4920), 2799 states have internal predecessors, (4920), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-21 21:57:24,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 4980 transitions. [2023-12-21 21:57:24,289 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 4980 transitions. Word has length 141 [2023-12-21 21:57:24,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:24,290 INFO L495 AbstractCegarLoop]: Abstraction has 2847 states and 4980 transitions. [2023-12-21 21:57:24,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:24,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 4980 transitions. [2023-12-21 21:57:24,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:24,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:24,291 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] [2023-12-21 21:57:24,296 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 [2023-12-21 21:57:24,495 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 [2023-12-21 21:57:24,496 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:24,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:24,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1002031908, now seen corresponding path program 1 times [2023-12-21 21:57:24,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:24,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468712752] [2023-12-21 21:57:24,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:24,497 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 [2023-12-21 21:57:24,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:24,498 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) [2023-12-21 21:57:24,515 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 [2023-12-21 21:57:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:24,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:24,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:24,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:24,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:24,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468712752] [2023-12-21 21:57:24,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468712752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:24,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:24,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:24,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018609698] [2023-12-21 21:57:24,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:24,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:24,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:24,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:24,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:24,692 INFO L87 Difference]: Start difference. First operand 2847 states and 4980 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:25,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:25,125 INFO L93 Difference]: Finished difference Result 3628 states and 6095 transitions. [2023-12-21 21:57:25,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:57:25,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:25,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:25,130 INFO L225 Difference]: With dead ends: 3628 [2023-12-21 21:57:25,131 INFO L226 Difference]: Without dead ends: 2918 [2023-12-21 21:57:25,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:25,133 INFO L413 NwaCegarLoop]: 4216 mSDtfsCounter, 4610 mSDsluCounter, 8328 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4628 SdHoareTripleChecker+Valid, 12544 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:25,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4628 Valid, 12544 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:57:25,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2023-12-21 21:57:25,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 2918. [2023-12-21 21:57:25,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2918 states, 2865 states have (on average 1.7469458987783595) internal successors, (5005), 2867 states have internal predecessors, (5005), 31 states have call successors, (31), 20 states have call predecessors, (31), 20 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-21 21:57:25,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 5067 transitions. [2023-12-21 21:57:25,203 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 5067 transitions. Word has length 141 [2023-12-21 21:57:25,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:25,203 INFO L495 AbstractCegarLoop]: Abstraction has 2918 states and 5067 transitions. [2023-12-21 21:57:25,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:25,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 5067 transitions. [2023-12-21 21:57:25,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:25,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:25,221 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] [2023-12-21 21:57:25,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-21 21:57:25,425 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 [2023-12-21 21:57:25,426 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:25,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:25,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1415794267, now seen corresponding path program 1 times [2023-12-21 21:57:25,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:25,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601207084] [2023-12-21 21:57:25,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:25,427 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 [2023-12-21 21:57:25,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:25,441 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) [2023-12-21 21:57:25,475 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 [2023-12-21 21:57:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:25,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:25,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:25,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:25,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:25,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601207084] [2023-12-21 21:57:25,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601207084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:25,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:25,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890186958] [2023-12-21 21:57:25,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:25,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:25,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:25,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:25,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:25,618 INFO L87 Difference]: Start difference. First operand 2918 states and 5067 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:26,096 INFO L93 Difference]: Finished difference Result 3770 states and 6269 transitions. [2023-12-21 21:57:26,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:57:26,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:26,101 INFO L225 Difference]: With dead ends: 3770 [2023-12-21 21:57:26,101 INFO L226 Difference]: Without dead ends: 2989 [2023-12-21 21:57:26,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:26,103 INFO L413 NwaCegarLoop]: 4213 mSDtfsCounter, 4603 mSDsluCounter, 8324 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4621 SdHoareTripleChecker+Valid, 12537 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:26,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4621 Valid, 12537 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:57:26,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2023-12-21 21:57:26,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2989. [2023-12-21 21:57:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2989 states, 2933 states have (on average 1.7347425843845892) internal successors, (5088), 2935 states have internal predecessors, (5088), 32 states have call successors, (32), 22 states have call predecessors, (32), 22 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 21:57:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 5152 transitions. [2023-12-21 21:57:26,160 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 5152 transitions. Word has length 141 [2023-12-21 21:57:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:26,161 INFO L495 AbstractCegarLoop]: Abstraction has 2989 states and 5152 transitions. [2023-12-21 21:57:26,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:26,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 5152 transitions. [2023-12-21 21:57:26,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:26,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:26,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:57:26,169 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 [2023-12-21 21:57:26,366 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 [2023-12-21 21:57:26,367 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:26,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:26,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1435248229, now seen corresponding path program 1 times [2023-12-21 21:57:26,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:26,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308473548] [2023-12-21 21:57:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:26,368 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 [2023-12-21 21:57:26,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:26,369 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) [2023-12-21 21:57:26,370 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 [2023-12-21 21:57:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:26,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:26,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:26,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:26,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:26,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308473548] [2023-12-21 21:57:26,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308473548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:26,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:26,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:26,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073817288] [2023-12-21 21:57:26,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:26,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:26,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:26,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:26,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:26,534 INFO L87 Difference]: Start difference. First operand 2989 states and 5152 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:26,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:26,984 INFO L93 Difference]: Finished difference Result 3912 states and 6439 transitions. [2023-12-21 21:57:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:57:26,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:26,994 INFO L225 Difference]: With dead ends: 3912 [2023-12-21 21:57:26,994 INFO L226 Difference]: Without dead ends: 3060 [2023-12-21 21:57:26,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:26,996 INFO L413 NwaCegarLoop]: 4210 mSDtfsCounter, 4596 mSDsluCounter, 8320 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 12530 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:26,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4614 Valid, 12530 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:57:26,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2023-12-21 21:57:27,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3060. [2023-12-21 21:57:27,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 3001 states have (on average 1.7224258580473175) internal successors, (5169), 3003 states have internal predecessors, (5169), 33 states have call successors, (33), 24 states have call predecessors, (33), 24 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-21 21:57:27,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 5235 transitions. [2023-12-21 21:57:27,056 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 5235 transitions. Word has length 141 [2023-12-21 21:57:27,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:27,057 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 5235 transitions. [2023-12-21 21:57:27,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:27,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 5235 transitions. [2023-12-21 21:57:27,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:27,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:27,058 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] [2023-12-21 21:57:27,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-21 21:57:27,262 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 [2023-12-21 21:57:27,262 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:27,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:27,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1498192732, now seen corresponding path program 1 times [2023-12-21 21:57:27,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:27,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529018246] [2023-12-21 21:57:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:27,263 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 [2023-12-21 21:57:27,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:27,264 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) [2023-12-21 21:57:27,298 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 [2023-12-21 21:57:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:27,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:27,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:27,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:27,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:27,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529018246] [2023-12-21 21:57:27,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529018246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:27,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:27,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:27,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054863764] [2023-12-21 21:57:27,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:27,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:27,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:27,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:27,443 INFO L87 Difference]: Start difference. First operand 3060 states and 5235 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:27,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:27,965 INFO L93 Difference]: Finished difference Result 4054 states and 6605 transitions. [2023-12-21 21:57:27,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:57:27,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:27,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:27,969 INFO L225 Difference]: With dead ends: 4054 [2023-12-21 21:57:27,970 INFO L226 Difference]: Without dead ends: 3131 [2023-12-21 21:57:27,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:27,974 INFO L413 NwaCegarLoop]: 4207 mSDtfsCounter, 4589 mSDsluCounter, 8316 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 12523 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:27,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4607 Valid, 12523 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:57:27,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2023-12-21 21:57:28,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3131. [2023-12-21 21:57:28,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 3069 states have (on average 1.7100032583903553) internal successors, (5248), 3071 states have internal predecessors, (5248), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 21:57:28,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 5316 transitions. [2023-12-21 21:57:28,046 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 5316 transitions. Word has length 141 [2023-12-21 21:57:28,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:28,046 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 5316 transitions. [2023-12-21 21:57:28,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:28,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 5316 transitions. [2023-12-21 21:57:28,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:28,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:28,048 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] [2023-12-21 21:57:28,063 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 [2023-12-21 21:57:28,252 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 [2023-12-21 21:57:28,253 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:28,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:28,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1803094372, now seen corresponding path program 1 times [2023-12-21 21:57:28,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:28,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769435508] [2023-12-21 21:57:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:28,254 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 [2023-12-21 21:57:28,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:28,276 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) [2023-12-21 21:57:28,323 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 [2023-12-21 21:57:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:28,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:28,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:28,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:28,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:28,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769435508] [2023-12-21 21:57:28,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769435508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:28,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:28,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:28,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70231308] [2023-12-21 21:57:28,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:28,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:57:28,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:28,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:57:28,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:28,422 INFO L87 Difference]: Start difference. First operand 3131 states and 5316 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:28,565 INFO L93 Difference]: Finished difference Result 4188 states and 6755 transitions. [2023-12-21 21:57:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:28,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:28,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:28,572 INFO L225 Difference]: With dead ends: 4188 [2023-12-21 21:57:28,572 INFO L226 Difference]: Without dead ends: 3195 [2023-12-21 21:57:28,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:28,575 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 92 mSDsluCounter, 8680 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 13027 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:28,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 13027 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:57:28,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2023-12-21 21:57:28,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3133. [2023-12-21 21:57:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3133 states, 3071 states have (on average 1.706284597850863) internal successors, (5240), 3073 states have internal predecessors, (5240), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 21:57:28,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 5308 transitions. [2023-12-21 21:57:28,724 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 5308 transitions. Word has length 141 [2023-12-21 21:57:28,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:28,724 INFO L495 AbstractCegarLoop]: Abstraction has 3133 states and 5308 transitions. [2023-12-21 21:57:28,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:28,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 5308 transitions. [2023-12-21 21:57:28,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:28,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:28,725 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] [2023-12-21 21:57:28,729 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 [2023-12-21 21:57:28,928 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 [2023-12-21 21:57:28,929 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:28,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:28,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1608363934, now seen corresponding path program 1 times [2023-12-21 21:57:28,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:28,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155818227] [2023-12-21 21:57:28,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:28,930 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 [2023-12-21 21:57:28,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:28,931 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) [2023-12-21 21:57:28,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-21 21:57:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:29,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:29,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:29,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:29,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:29,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:29,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155818227] [2023-12-21 21:57:29,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155818227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:29,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:29,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:29,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50635907] [2023-12-21 21:57:29,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:29,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:57:29,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:29,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:57:29,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:29,057 INFO L87 Difference]: Start difference. First operand 3133 states and 5308 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:29,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:29,182 INFO L93 Difference]: Finished difference Result 4186 states and 6731 transitions. [2023-12-21 21:57:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:29,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:29,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:29,186 INFO L225 Difference]: With dead ends: 4186 [2023-12-21 21:57:29,186 INFO L226 Difference]: Without dead ends: 3191 [2023-12-21 21:57:29,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:29,188 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 83 mSDsluCounter, 8681 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 13028 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:29,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 13028 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:57:29,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2023-12-21 21:57:29,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3135. [2023-12-21 21:57:29,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 3073 states have (on average 1.7025707777416206) internal successors, (5232), 3075 states have internal predecessors, (5232), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 21:57:29,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 5300 transitions. [2023-12-21 21:57:29,245 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 5300 transitions. Word has length 141 [2023-12-21 21:57:29,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:29,245 INFO L495 AbstractCegarLoop]: Abstraction has 3135 states and 5300 transitions. [2023-12-21 21:57:29,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:29,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 5300 transitions. [2023-12-21 21:57:29,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:29,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:29,246 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] [2023-12-21 21:57:29,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-21 21:57:29,450 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 [2023-12-21 21:57:29,450 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:29,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:29,451 INFO L85 PathProgramCache]: Analyzing trace with hash 613670236, now seen corresponding path program 1 times [2023-12-21 21:57:29,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:29,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871724106] [2023-12-21 21:57:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:29,451 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 [2023-12-21 21:57:29,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:29,455 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) [2023-12-21 21:57:29,456 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 [2023-12-21 21:57:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:29,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:29,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:29,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:29,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:29,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871724106] [2023-12-21 21:57:29,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871724106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:29,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:29,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:29,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185623479] [2023-12-21 21:57:29,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:29,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:57:29,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:29,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:57:29,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:29,623 INFO L87 Difference]: Start difference. First operand 3135 states and 5300 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:29,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:29,754 INFO L93 Difference]: Finished difference Result 4184 states and 6707 transitions. [2023-12-21 21:57:29,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:29,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:29,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:29,758 INFO L225 Difference]: With dead ends: 4184 [2023-12-21 21:57:29,759 INFO L226 Difference]: Without dead ends: 3187 [2023-12-21 21:57:29,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:29,761 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 74 mSDsluCounter, 8682 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 13029 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:29,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 13029 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:57:29,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2023-12-21 21:57:29,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 3137. [2023-12-21 21:57:29,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3137 states, 3075 states have (on average 1.6988617886178863) internal successors, (5224), 3077 states have internal predecessors, (5224), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 21:57:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3137 states to 3137 states and 5292 transitions. [2023-12-21 21:57:29,826 INFO L78 Accepts]: Start accepts. Automaton has 3137 states and 5292 transitions. Word has length 141 [2023-12-21 21:57:29,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:29,826 INFO L495 AbstractCegarLoop]: Abstraction has 3137 states and 5292 transitions. [2023-12-21 21:57:29,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:29,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3137 states and 5292 transitions. [2023-12-21 21:57:29,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:29,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:29,828 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] [2023-12-21 21:57:29,850 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 [2023-12-21 21:57:30,033 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 [2023-12-21 21:57:30,033 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:30,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:30,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1938526430, now seen corresponding path program 1 times [2023-12-21 21:57:30,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:30,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084364654] [2023-12-21 21:57:30,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:30,034 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 [2023-12-21 21:57:30,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:30,035 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) [2023-12-21 21:57:30,064 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 [2023-12-21 21:57:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:30,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:30,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:30,160 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:30,160 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:30,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084364654] [2023-12-21 21:57:30,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084364654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:30,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:30,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:30,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197297054] [2023-12-21 21:57:30,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:30,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:57:30,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:30,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:57:30,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:30,161 INFO L87 Difference]: Start difference. First operand 3137 states and 5292 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:30,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:30,288 INFO L93 Difference]: Finished difference Result 4182 states and 6683 transitions. [2023-12-21 21:57:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:30,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:30,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:30,292 INFO L225 Difference]: With dead ends: 4182 [2023-12-21 21:57:30,292 INFO L226 Difference]: Without dead ends: 3183 [2023-12-21 21:57:30,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:30,295 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 65 mSDsluCounter, 8683 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 13030 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:30,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 13030 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:57:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2023-12-21 21:57:30,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 3139. [2023-12-21 21:57:30,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 3077 states have (on average 1.6951576210594734) internal successors, (5216), 3079 states have internal predecessors, (5216), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 21:57:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 5284 transitions. [2023-12-21 21:57:30,349 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 5284 transitions. Word has length 141 [2023-12-21 21:57:30,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:30,349 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 5284 transitions. [2023-12-21 21:57:30,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 5284 transitions. [2023-12-21 21:57:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:30,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:30,350 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] [2023-12-21 21:57:30,366 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 (25)] Forceful destruction successful, exit code 0 [2023-12-21 21:57:30,554 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 [2023-12-21 21:57:30,555 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:30,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:30,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1517407204, now seen corresponding path program 1 times [2023-12-21 21:57:30,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:30,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752937716] [2023-12-21 21:57:30,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:30,556 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 [2023-12-21 21:57:30,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:30,557 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) [2023-12-21 21:57:30,590 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 [2023-12-21 21:57:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:30,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:57:30,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:30,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:30,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:30,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752937716] [2023-12-21 21:57:30,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752937716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:30,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:30,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:57:30,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540223805] [2023-12-21 21:57:30,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:30,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:57:30,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:30,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:57:30,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:57:30,744 INFO L87 Difference]: Start difference. First operand 3139 states and 5284 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:30,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:30,885 INFO L93 Difference]: Finished difference Result 5055 states and 7781 transitions. [2023-12-21 21:57:30,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:57:30,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:30,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:30,890 INFO L225 Difference]: With dead ends: 5055 [2023-12-21 21:57:30,890 INFO L226 Difference]: Without dead ends: 4054 [2023-12-21 21:57:30,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:57:30,893 INFO L413 NwaCegarLoop]: 4396 mSDtfsCounter, 4304 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4304 SdHoareTripleChecker+Valid, 4751 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:30,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4304 Valid, 4751 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:57:30,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4054 states. [2023-12-21 21:57:31,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4054 to 4051. [2023-12-21 21:57:31,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4051 states, 3937 states have (on average 1.6065532131064262) internal successors, (6325), 3939 states have internal predecessors, (6325), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 21:57:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4051 states to 4051 states and 6449 transitions. [2023-12-21 21:57:31,013 INFO L78 Accepts]: Start accepts. Automaton has 4051 states and 6449 transitions. Word has length 141 [2023-12-21 21:57:31,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:31,013 INFO L495 AbstractCegarLoop]: Abstraction has 4051 states and 6449 transitions. [2023-12-21 21:57:31,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 4051 states and 6449 transitions. [2023-12-21 21:57:31,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:31,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:31,014 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] [2023-12-21 21:57:31,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-21 21:57:31,218 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 [2023-12-21 21:57:31,219 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:31,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:31,219 INFO L85 PathProgramCache]: Analyzing trace with hash 822238877, now seen corresponding path program 1 times [2023-12-21 21:57:31,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:31,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989025018] [2023-12-21 21:57:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:31,220 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 [2023-12-21 21:57:31,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:31,221 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) [2023-12-21 21:57:31,251 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 [2023-12-21 21:57:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:31,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:31,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:31,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:31,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:31,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989025018] [2023-12-21 21:57:31,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989025018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:31,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:31,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:31,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331281378] [2023-12-21 21:57:31,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:31,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:57:31,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:31,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:57:31,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:31,363 INFO L87 Difference]: Start difference. First operand 4051 states and 6449 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:31,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:31,548 INFO L93 Difference]: Finished difference Result 6338 states and 9459 transitions. [2023-12-21 21:57:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:31,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:31,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:31,559 INFO L225 Difference]: With dead ends: 6338 [2023-12-21 21:57:31,559 INFO L226 Difference]: Without dead ends: 4425 [2023-12-21 21:57:31,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:31,566 INFO L413 NwaCegarLoop]: 4350 mSDtfsCounter, 47 mSDsluCounter, 8694 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 13044 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:31,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 13044 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:57:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2023-12-21 21:57:31,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4073. [2023-12-21 21:57:31,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4073 states, 3959 states have (on average 1.600656731497853) internal successors, (6337), 3961 states have internal predecessors, (6337), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 21:57:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 6461 transitions. [2023-12-21 21:57:31,687 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 6461 transitions. Word has length 141 [2023-12-21 21:57:31,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:31,687 INFO L495 AbstractCegarLoop]: Abstraction has 4073 states and 6461 transitions. [2023-12-21 21:57:31,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:31,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 6461 transitions. [2023-12-21 21:57:31,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:31,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:31,689 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] [2023-12-21 21:57:31,705 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 [2023-12-21 21:57:31,893 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 [2023-12-21 21:57:31,893 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:31,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1776179035, now seen corresponding path program 1 times [2023-12-21 21:57:31,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:31,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230603982] [2023-12-21 21:57:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:31,894 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 [2023-12-21 21:57:31,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:31,895 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) [2023-12-21 21:57:31,928 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 [2023-12-21 21:57:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:32,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:32,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:32,023 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:32,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:32,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230603982] [2023-12-21 21:57:32,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230603982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:32,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:32,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:32,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765621863] [2023-12-21 21:57:32,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:32,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:57:32,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:32,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:57:32,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:32,026 INFO L87 Difference]: Start difference. First operand 4073 states and 6461 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:32,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:32,188 INFO L93 Difference]: Finished difference Result 6036 states and 9018 transitions. [2023-12-21 21:57:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:32,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:32,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:32,193 INFO L225 Difference]: With dead ends: 6036 [2023-12-21 21:57:32,193 INFO L226 Difference]: Without dead ends: 4101 [2023-12-21 21:57:32,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:32,197 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 38 mSDsluCounter, 8685 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 13032 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:32,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 13032 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:57:32,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2023-12-21 21:57:32,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 4075. [2023-12-21 21:57:32,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 3961 states have (on average 1.5953042161070436) internal successors, (6319), 3963 states have internal predecessors, (6319), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 21:57:32,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6443 transitions. [2023-12-21 21:57:32,342 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6443 transitions. Word has length 141 [2023-12-21 21:57:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:32,342 INFO L495 AbstractCegarLoop]: Abstraction has 4075 states and 6443 transitions. [2023-12-21 21:57:32,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6443 transitions. [2023-12-21 21:57:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:32,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:32,345 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] [2023-12-21 21:57:32,351 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 [2023-12-21 21:57:32,549 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 [2023-12-21 21:57:32,549 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:32,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:32,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1358782429, now seen corresponding path program 1 times [2023-12-21 21:57:32,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:32,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990562316] [2023-12-21 21:57:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:32,550 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 [2023-12-21 21:57:32,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:32,551 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) [2023-12-21 21:57:32,552 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 [2023-12-21 21:57:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:32,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:32,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:32,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:32,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:32,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990562316] [2023-12-21 21:57:32,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990562316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:32,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:32,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:32,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310344336] [2023-12-21 21:57:32,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:32,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:57:32,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:32,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:57:32,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:32,680 INFO L87 Difference]: Start difference. First operand 4075 states and 6443 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:32,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:32,829 INFO L93 Difference]: Finished difference Result 6056 states and 9003 transitions. [2023-12-21 21:57:32,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:32,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:32,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:32,835 INFO L225 Difference]: With dead ends: 6056 [2023-12-21 21:57:32,835 INFO L226 Difference]: Without dead ends: 4119 [2023-12-21 21:57:32,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:32,839 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 29 mSDsluCounter, 8686 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 13033 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:32,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 13033 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:57:32,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2023-12-21 21:57:32,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 4079. [2023-12-21 21:57:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4079 states, 3965 states have (on average 1.5899117276166457) internal successors, (6304), 3967 states have internal predecessors, (6304), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 21:57:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4079 states to 4079 states and 6428 transitions. [2023-12-21 21:57:32,930 INFO L78 Accepts]: Start accepts. Automaton has 4079 states and 6428 transitions. Word has length 141 [2023-12-21 21:57:32,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:32,930 INFO L495 AbstractCegarLoop]: Abstraction has 4079 states and 6428 transitions. [2023-12-21 21:57:32,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:32,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4079 states and 6428 transitions. [2023-12-21 21:57:32,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:32,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:32,931 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] [2023-12-21 21:57:32,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-21 21:57:33,135 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 [2023-12-21 21:57:33,135 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:33,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:33,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1792511515, now seen corresponding path program 1 times [2023-12-21 21:57:33,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:33,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740228364] [2023-12-21 21:57:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:33,137 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 [2023-12-21 21:57:33,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:33,137 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) [2023-12-21 21:57:33,146 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 [2023-12-21 21:57:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:33,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:33,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:33,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:33,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:33,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740228364] [2023-12-21 21:57:33,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740228364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:33,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:33,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:33,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100065910] [2023-12-21 21:57:33,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:33,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:57:33,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:33,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:57:33,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:33,262 INFO L87 Difference]: Start difference. First operand 4079 states and 6428 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:33,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:33,409 INFO L93 Difference]: Finished difference Result 6052 states and 8957 transitions. [2023-12-21 21:57:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:33,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:33,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:33,414 INFO L225 Difference]: With dead ends: 6052 [2023-12-21 21:57:33,414 INFO L226 Difference]: Without dead ends: 4111 [2023-12-21 21:57:33,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:33,417 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 20 mSDsluCounter, 8687 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 13034 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:33,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 13034 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:57:33,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2023-12-21 21:57:33,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 4083. [2023-12-21 21:57:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4083 states, 3969 states have (on average 1.5845301083396321) internal successors, (6289), 3971 states have internal predecessors, (6289), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 21:57:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 6413 transitions. [2023-12-21 21:57:33,496 INFO L78 Accepts]: Start accepts. Automaton has 4083 states and 6413 transitions. Word has length 141 [2023-12-21 21:57:33,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:33,496 INFO L495 AbstractCegarLoop]: Abstraction has 4083 states and 6413 transitions. [2023-12-21 21:57:33,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:33,496 INFO L276 IsEmpty]: Start isEmpty. Operand 4083 states and 6413 transitions. [2023-12-21 21:57:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:33,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:33,497 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] [2023-12-21 21:57:33,501 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 [2023-12-21 21:57:33,701 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 [2023-12-21 21:57:33,701 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:33,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:33,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2058555107, now seen corresponding path program 1 times [2023-12-21 21:57:33,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:33,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893422957] [2023-12-21 21:57:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:33,702 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 [2023-12-21 21:57:33,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:33,703 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) [2023-12-21 21:57:33,712 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 [2023-12-21 21:57:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:33,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:33,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:33,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:33,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:33,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893422957] [2023-12-21 21:57:33,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893422957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:33,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:33,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:33,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302991922] [2023-12-21 21:57:33,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:33,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:57:33,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:57:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:33,824 INFO L87 Difference]: Start difference. First operand 4083 states and 6413 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:33,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:33,968 INFO L93 Difference]: Finished difference Result 6048 states and 8911 transitions. [2023-12-21 21:57:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:33,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:33,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:33,973 INFO L225 Difference]: With dead ends: 6048 [2023-12-21 21:57:33,973 INFO L226 Difference]: Without dead ends: 4103 [2023-12-21 21:57:33,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:33,976 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 11 mSDsluCounter, 8688 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 13035 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:33,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 13035 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:57:33,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2023-12-21 21:57:34,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 4087. [2023-12-21 21:57:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4087 states, 3973 states have (on average 1.5791593254467657) internal successors, (6274), 3975 states have internal predecessors, (6274), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 21:57:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4087 states to 4087 states and 6398 transitions. [2023-12-21 21:57:34,051 INFO L78 Accepts]: Start accepts. Automaton has 4087 states and 6398 transitions. Word has length 141 [2023-12-21 21:57:34,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:34,052 INFO L495 AbstractCegarLoop]: Abstraction has 4087 states and 6398 transitions. [2023-12-21 21:57:34,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:34,052 INFO L276 IsEmpty]: Start isEmpty. Operand 4087 states and 6398 transitions. [2023-12-21 21:57:34,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:34,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:34,053 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] [2023-12-21 21:57:34,056 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 [2023-12-21 21:57:34,256 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 [2023-12-21 21:57:34,256 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:34,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:34,257 INFO L85 PathProgramCache]: Analyzing trace with hash -119393061, now seen corresponding path program 1 times [2023-12-21 21:57:34,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:34,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595906540] [2023-12-21 21:57:34,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:34,257 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 [2023-12-21 21:57:34,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:34,258 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) [2023-12-21 21:57:34,261 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 (32)] Waiting until timeout for monitored process [2023-12-21 21:57:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:34,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:57:34,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:34,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:34,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:34,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:34,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595906540] [2023-12-21 21:57:34,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595906540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:34,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:34,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:34,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331295285] [2023-12-21 21:57:34,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:34,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:57:34,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:34,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:57:34,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:34,379 INFO L87 Difference]: Start difference. First operand 4087 states and 6398 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:34,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:34,525 INFO L93 Difference]: Finished difference Result 6044 states and 8865 transitions. [2023-12-21 21:57:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:34,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:34,530 INFO L225 Difference]: With dead ends: 6044 [2023-12-21 21:57:34,530 INFO L226 Difference]: Without dead ends: 4095 [2023-12-21 21:57:34,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:34,533 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 2 mSDsluCounter, 8689 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13036 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:34,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13036 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:57:34,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2023-12-21 21:57:34,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 4091. [2023-12-21 21:57:34,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4091 states, 3977 states have (on average 1.573799346240885) internal successors, (6259), 3979 states have internal predecessors, (6259), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 21:57:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4091 states to 4091 states and 6383 transitions. [2023-12-21 21:57:34,607 INFO L78 Accepts]: Start accepts. Automaton has 4091 states and 6383 transitions. Word has length 141 [2023-12-21 21:57:34,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:34,607 INFO L495 AbstractCegarLoop]: Abstraction has 4091 states and 6383 transitions. [2023-12-21 21:57:34,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:34,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4091 states and 6383 transitions. [2023-12-21 21:57:34,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:34,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:34,608 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] [2023-12-21 21:57:34,618 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 [2023-12-21 21:57:34,812 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 [2023-12-21 21:57:34,812 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:34,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:34,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1016786339, now seen corresponding path program 1 times [2023-12-21 21:57:34,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:34,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329895492] [2023-12-21 21:57:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:34,813 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 [2023-12-21 21:57:34,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:34,814 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) [2023-12-21 21:57:34,816 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 [2023-12-21 21:57:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:34,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:57:34,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:35,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:35,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:35,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329895492] [2023-12-21 21:57:35,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329895492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:35,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:35,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:35,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924892745] [2023-12-21 21:57:35,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:35,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:35,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:35,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:35,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:35,060 INFO L87 Difference]: Start difference. First operand 4091 states and 6383 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:35,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:35,796 INFO L93 Difference]: Finished difference Result 8083 states and 11269 transitions. [2023-12-21 21:57:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:57:35,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:35,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:35,804 INFO L225 Difference]: With dead ends: 8083 [2023-12-21 21:57:35,804 INFO L226 Difference]: Without dead ends: 6129 [2023-12-21 21:57:35,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:57:35,807 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 4613 mSDsluCounter, 8590 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4630 SdHoareTripleChecker+Valid, 12826 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:35,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4630 Valid, 12826 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:57:35,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6129 states. [2023-12-21 21:57:35,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6129 to 6081. [2023-12-21 21:57:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6081 states, 5859 states have (on average 1.4632189793480117) internal successors, (8573), 5863 states have internal predecessors, (8573), 118 states have call successors, (118), 100 states have call predecessors, (118), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-21 21:57:35,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 8811 transitions. [2023-12-21 21:57:35,966 INFO L78 Accepts]: Start accepts. Automaton has 6081 states and 8811 transitions. Word has length 141 [2023-12-21 21:57:35,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:35,966 INFO L495 AbstractCegarLoop]: Abstraction has 6081 states and 8811 transitions. [2023-12-21 21:57:35,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 6081 states and 8811 transitions. [2023-12-21 21:57:35,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:35,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:35,967 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] [2023-12-21 21:57:35,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-21 21:57:36,171 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 [2023-12-21 21:57:36,171 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:36,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:36,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1432813791, now seen corresponding path program 1 times [2023-12-21 21:57:36,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:36,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740718392] [2023-12-21 21:57:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:36,172 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 [2023-12-21 21:57:36,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:36,173 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) [2023-12-21 21:57:36,204 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 [2023-12-21 21:57:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:36,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:57:36,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:36,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:36,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:36,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740718392] [2023-12-21 21:57:36,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740718392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:36,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:36,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:36,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067170325] [2023-12-21 21:57:36,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:36,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:36,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:36,428 INFO L87 Difference]: Start difference. First operand 6081 states and 8811 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:36,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:36,904 INFO L93 Difference]: Finished difference Result 10025 states and 13648 transitions. [2023-12-21 21:57:36,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:57:36,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:36,913 INFO L225 Difference]: With dead ends: 10025 [2023-12-21 21:57:36,913 INFO L226 Difference]: Without dead ends: 6081 [2023-12-21 21:57:36,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:57:36,920 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4429 mSDsluCounter, 8312 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 12515 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:36,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4446 Valid, 12515 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:57:36,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2023-12-21 21:57:37,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 6081. [2023-12-21 21:57:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6081 states, 5859 states have (on average 1.4608294930875576) internal successors, (8559), 5863 states have internal predecessors, (8559), 118 states have call successors, (118), 100 states have call predecessors, (118), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-21 21:57:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 8797 transitions. [2023-12-21 21:57:37,081 INFO L78 Accepts]: Start accepts. Automaton has 6081 states and 8797 transitions. Word has length 141 [2023-12-21 21:57:37,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:37,082 INFO L495 AbstractCegarLoop]: Abstraction has 6081 states and 8797 transitions. [2023-12-21 21:57:37,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:37,082 INFO L276 IsEmpty]: Start isEmpty. Operand 6081 states and 8797 transitions. [2023-12-21 21:57:37,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:37,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:37,083 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] [2023-12-21 21:57:37,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-21 21:57:37,287 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 [2023-12-21 21:57:37,287 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:37,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:37,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2134413665, now seen corresponding path program 1 times [2023-12-21 21:57:37,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:37,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048570224] [2023-12-21 21:57:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:37,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:57:37,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:37,289 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) [2023-12-21 21:57:37,292 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 [2023-12-21 21:57:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:37,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:57:37,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:37,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:37,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:37,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048570224] [2023-12-21 21:57:37,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048570224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:37,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:37,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:37,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366427188] [2023-12-21 21:57:37,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:37,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:57:37,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:37,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:57:37,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:37,540 INFO L87 Difference]: Start difference. First operand 6081 states and 8797 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:38,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:38,121 INFO L93 Difference]: Finished difference Result 10323 states and 13995 transitions. [2023-12-21 21:57:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:57:38,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 21:57:38,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:38,130 INFO L225 Difference]: With dead ends: 10323 [2023-12-21 21:57:38,130 INFO L226 Difference]: Without dead ends: 6379 [2023-12-21 21:57:38,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:57:38,137 INFO L413 NwaCegarLoop]: 4202 mSDtfsCounter, 4532 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4549 SdHoareTripleChecker+Valid, 12510 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:38,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4549 Valid, 12510 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:57:38,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6379 states. [2023-12-21 21:57:38,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6379 to 6311. [2023-12-21 21:57:38,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6311 states, 6085 states have (on average 1.4423993426458503) internal successors, (8777), 6089 states have internal predecessors, (8777), 118 states have call successors, (118), 104 states have call predecessors, (118), 106 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-21 21:57:38,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6311 states to 6311 states and 9015 transitions. [2023-12-21 21:57:38,428 INFO L78 Accepts]: Start accepts. Automaton has 6311 states and 9015 transitions. Word has length 141 [2023-12-21 21:57:38,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:38,429 INFO L495 AbstractCegarLoop]: Abstraction has 6311 states and 9015 transitions. [2023-12-21 21:57:38,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:57:38,429 INFO L276 IsEmpty]: Start isEmpty. Operand 6311 states and 9015 transitions. [2023-12-21 21:57:38,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 21:57:38,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:38,430 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] [2023-12-21 21:57:38,437 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 [2023-12-21 21:57:38,634 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 [2023-12-21 21:57:38,634 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:38,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:38,635 INFO L85 PathProgramCache]: Analyzing trace with hash 328975331, now seen corresponding path program 1 times [2023-12-21 21:57:38,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:38,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960751808] [2023-12-21 21:57:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:38,635 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 [2023-12-21 21:57:38,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:38,636 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) [2023-12-21 21:57:38,637 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 [2023-12-21 21:57:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:38,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:57:38,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:57:38,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:38,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:38,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960751808] [2023-12-21 21:57:38,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960751808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:38,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:38,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:57:38,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534954139] [2023-12-21 21:57:38,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:38,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:57:38,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:38,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:57:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:57:38,880 INFO L87 Difference]: Start difference. First operand 6311 states and 9015 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:57:39,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:39,212 INFO L93 Difference]: Finished difference Result 14588 states and 19075 transitions. [2023-12-21 21:57:39,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:57:39,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 141 [2023-12-21 21:57:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:39,226 INFO L225 Difference]: With dead ends: 14588 [2023-12-21 21:57:39,226 INFO L226 Difference]: Without dead ends: 10415 [2023-12-21 21:57:39,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:57:39,236 INFO L413 NwaCegarLoop]: 4340 mSDtfsCounter, 4231 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4231 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:39,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4231 Valid, 4687 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:57:39,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10415 states. [2023-12-21 21:57:39,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10415 to 10411. [2023-12-21 21:57:39,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10411 states, 9965 states have (on average 1.3482187656798796) internal successors, (13435), 9975 states have internal predecessors, (13435), 232 states have call successors, (232), 208 states have call predecessors, (232), 212 states have return successors, (236), 228 states have call predecessors, (236), 232 states have call successors, (236) [2023-12-21 21:57:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10411 states to 10411 states and 13903 transitions. [2023-12-21 21:57:39,542 INFO L78 Accepts]: Start accepts. Automaton has 10411 states and 13903 transitions. Word has length 141 [2023-12-21 21:57:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:39,542 INFO L495 AbstractCegarLoop]: Abstraction has 10411 states and 13903 transitions. [2023-12-21 21:57:39,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:57:39,543 INFO L276 IsEmpty]: Start isEmpty. Operand 10411 states and 13903 transitions. [2023-12-21 21:57:39,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-21 21:57:39,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:39,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:57:39,554 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 [2023-12-21 21:57:39,752 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 [2023-12-21 21:57:39,753 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:39,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:39,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1712586272, now seen corresponding path program 1 times [2023-12-21 21:57:39,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:39,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388994280] [2023-12-21 21:57:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:39,754 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 [2023-12-21 21:57:39,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:39,767 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) [2023-12-21 21:57:39,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-21 21:57:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:39,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:57:39,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:40,212 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 21:57:40,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:40,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:40,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388994280] [2023-12-21 21:57:40,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388994280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:40,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:40,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:40,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754387910] [2023-12-21 21:57:40,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:40,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:57:40,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:40,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:57:40,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:40,214 INFO L87 Difference]: Start difference. First operand 10411 states and 13903 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:57:41,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:41,093 INFO L93 Difference]: Finished difference Result 26724 states and 33433 transitions. [2023-12-21 21:57:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:57:41,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 227 [2023-12-21 21:57:41,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:41,122 INFO L225 Difference]: With dead ends: 26724 [2023-12-21 21:57:41,122 INFO L226 Difference]: Without dead ends: 18452 [2023-12-21 21:57:41,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:41,135 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 4505 mSDsluCounter, 4590 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4509 SdHoareTripleChecker+Valid, 9019 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:41,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4509 Valid, 9019 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:57:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18452 states. [2023-12-21 21:57:41,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18452 to 18450. [2023-12-21 21:57:41,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18450 states, 17577 states have (on average 1.2821869488536155) internal successors, (22537), 17604 states have internal predecessors, (22537), 447 states have call successors, (447), 400 states have call predecessors, (447), 424 states have return successors, (495), 447 states have call predecessors, (495), 447 states have call successors, (495) [2023-12-21 21:57:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18450 states to 18450 states and 23479 transitions. [2023-12-21 21:57:41,831 INFO L78 Accepts]: Start accepts. Automaton has 18450 states and 23479 transitions. Word has length 227 [2023-12-21 21:57:41,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:41,832 INFO L495 AbstractCegarLoop]: Abstraction has 18450 states and 23479 transitions. [2023-12-21 21:57:41,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:57:41,832 INFO L276 IsEmpty]: Start isEmpty. Operand 18450 states and 23479 transitions. [2023-12-21 21:57:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-21 21:57:41,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:41,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:57:41,845 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 [2023-12-21 21:57:42,045 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 [2023-12-21 21:57:42,045 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:42,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:42,045 INFO L85 PathProgramCache]: Analyzing trace with hash 806305950, now seen corresponding path program 1 times [2023-12-21 21:57:42,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:42,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602540507] [2023-12-21 21:57:42,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:42,046 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 [2023-12-21 21:57:42,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:42,047 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) [2023-12-21 21:57:42,048 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 [2023-12-21 21:57:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:42,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:57:42,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 21:57:42,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:42,214 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:42,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602540507] [2023-12-21 21:57:42,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602540507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:42,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:42,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:57:42,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347741913] [2023-12-21 21:57:42,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:42,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:57:42,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:42,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:57:42,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:57:42,215 INFO L87 Difference]: Start difference. First operand 18450 states and 23479 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:57:42,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:42,882 INFO L93 Difference]: Finished difference Result 34748 states and 42944 transitions. [2023-12-21 21:57:42,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:57:42,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 227 [2023-12-21 21:57:42,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:42,906 INFO L225 Difference]: With dead ends: 34748 [2023-12-21 21:57:42,906 INFO L226 Difference]: Without dead ends: 18437 [2023-12-21 21:57:42,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:57:42,920 INFO L413 NwaCegarLoop]: 4340 mSDtfsCounter, 415 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 8297 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:42,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 8297 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:57:42,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18437 states. [2023-12-21 21:57:43,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18437 to 18437. [2023-12-21 21:57:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18437 states, 17567 states have (on average 1.2818352592929925) internal successors, (22518), 17593 states have internal predecessors, (22518), 444 states have call successors, (444), 400 states have call predecessors, (444), 424 states have return successors, (492), 444 states have call predecessors, (492), 444 states have call successors, (492) [2023-12-21 21:57:43,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18437 states to 18437 states and 23454 transitions. [2023-12-21 21:57:43,665 INFO L78 Accepts]: Start accepts. Automaton has 18437 states and 23454 transitions. Word has length 227 [2023-12-21 21:57:43,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:43,665 INFO L495 AbstractCegarLoop]: Abstraction has 18437 states and 23454 transitions. [2023-12-21 21:57:43,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:57:43,665 INFO L276 IsEmpty]: Start isEmpty. Operand 18437 states and 23454 transitions. [2023-12-21 21:57:43,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-21 21:57:43,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:43,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:57:43,678 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 [2023-12-21 21:57:43,878 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 [2023-12-21 21:57:43,878 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:43,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:43,879 INFO L85 PathProgramCache]: Analyzing trace with hash 366292773, now seen corresponding path program 1 times [2023-12-21 21:57:43,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:43,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470861271] [2023-12-21 21:57:43,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:43,879 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 [2023-12-21 21:57:43,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:43,887 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) [2023-12-21 21:57:43,888 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 [2023-12-21 21:57:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:44,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:57:44,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 21:57:44,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:44,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:44,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470861271] [2023-12-21 21:57:44,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470861271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:44,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:44,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:44,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028877942] [2023-12-21 21:57:44,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:44,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:57:44,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:44,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:57:44,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:44,230 INFO L87 Difference]: Start difference. First operand 18437 states and 23454 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:57:45,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:45,661 INFO L93 Difference]: Finished difference Result 50129 states and 61286 transitions. [2023-12-21 21:57:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:57:45,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 229 [2023-12-21 21:57:45,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:45,707 INFO L225 Difference]: With dead ends: 50129 [2023-12-21 21:57:45,708 INFO L226 Difference]: Without dead ends: 33831 [2023-12-21 21:57:45,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:45,727 INFO L413 NwaCegarLoop]: 4412 mSDtfsCounter, 4500 mSDsluCounter, 4572 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4505 SdHoareTripleChecker+Valid, 8984 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:45,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4505 Valid, 8984 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:57:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33831 states. [2023-12-21 21:57:46,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33831 to 33829. [2023-12-21 21:57:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33829 states, 32140 states have (on average 1.242252644679527) internal successors, (39926), 32199 states have internal predecessors, (39926), 855 states have call successors, (855), 768 states have call predecessors, (855), 832 states have return successors, (991), 863 states have call predecessors, (991), 855 states have call successors, (991) [2023-12-21 21:57:46,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33829 states to 33829 states and 41772 transitions. [2023-12-21 21:57:46,992 INFO L78 Accepts]: Start accepts. Automaton has 33829 states and 41772 transitions. Word has length 229 [2023-12-21 21:57:46,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:46,992 INFO L495 AbstractCegarLoop]: Abstraction has 33829 states and 41772 transitions. [2023-12-21 21:57:46,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:57:46,992 INFO L276 IsEmpty]: Start isEmpty. Operand 33829 states and 41772 transitions. [2023-12-21 21:57:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-21 21:57:47,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:47,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:57:47,011 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 [2023-12-21 21:57:47,208 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 [2023-12-21 21:57:47,209 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:47,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:47,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1142540327, now seen corresponding path program 1 times [2023-12-21 21:57:47,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:47,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455167020] [2023-12-21 21:57:47,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:47,210 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 [2023-12-21 21:57:47,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:47,210 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) [2023-12-21 21:57:47,244 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 [2023-12-21 21:57:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:47,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:57:47,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 21:57:47,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:47,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:47,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455167020] [2023-12-21 21:57:47,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455167020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:47,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:47,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:57:47,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309518110] [2023-12-21 21:57:47,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:47,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:57:47,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:47,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:57:47,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:57:47,359 INFO L87 Difference]: Start difference. First operand 33829 states and 41772 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:57:48,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:48,505 INFO L93 Difference]: Finished difference Result 65507 states and 79533 transitions. [2023-12-21 21:57:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:57:48,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 229 [2023-12-21 21:57:48,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:48,552 INFO L225 Difference]: With dead ends: 65507 [2023-12-21 21:57:48,553 INFO L226 Difference]: Without dead ends: 33817 [2023-12-21 21:57:48,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:57:48,584 INFO L413 NwaCegarLoop]: 4339 mSDtfsCounter, 413 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 8296 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:48,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 8296 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:57:48,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33817 states. [2023-12-21 21:57:50,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33817 to 33817. [2023-12-21 21:57:50,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33817 states, 32131 states have (on average 1.242071519716162) internal successors, (39909), 32189 states have internal predecessors, (39909), 852 states have call successors, (852), 768 states have call predecessors, (852), 832 states have return successors, (988), 860 states have call predecessors, (988), 852 states have call successors, (988) [2023-12-21 21:57:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33817 states to 33817 states and 41749 transitions. [2023-12-21 21:57:50,088 INFO L78 Accepts]: Start accepts. Automaton has 33817 states and 41749 transitions. Word has length 229 [2023-12-21 21:57:50,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:50,088 INFO L495 AbstractCegarLoop]: Abstraction has 33817 states and 41749 transitions. [2023-12-21 21:57:50,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:57:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 33817 states and 41749 transitions. [2023-12-21 21:57:50,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-21 21:57:50,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:50,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:57:50,105 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 [2023-12-21 21:57:50,305 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 [2023-12-21 21:57:50,305 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:50,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:50,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1839390752, now seen corresponding path program 1 times [2023-12-21 21:57:50,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:50,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841815346] [2023-12-21 21:57:50,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:50,307 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 [2023-12-21 21:57:50,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:50,308 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) [2023-12-21 21:57:50,328 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 [2023-12-21 21:57:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:50,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:57:50,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 21:57:50,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:50,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:50,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841815346] [2023-12-21 21:57:50,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841815346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:50,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:50,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:57:50,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024453502] [2023-12-21 21:57:50,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:50,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:57:50,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:50,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:57:50,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:57:50,670 INFO L87 Difference]: Start difference. First operand 33817 states and 41749 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:57:53,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:53,444 INFO L93 Difference]: Finished difference Result 95392 states and 115131 transitions. [2023-12-21 21:57:53,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:57:53,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 231 [2023-12-21 21:57:53,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:53,550 INFO L225 Difference]: With dead ends: 95392 [2023-12-21 21:57:53,551 INFO L226 Difference]: Without dead ends: 63714 [2023-12-21 21:57:53,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:57:53,579 INFO L413 NwaCegarLoop]: 4398 mSDtfsCounter, 4493 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4499 SdHoareTripleChecker+Valid, 8952 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:53,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4499 Valid, 8952 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 21:57:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63714 states. [2023-12-21 21:57:56,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63714 to 63712. [2023-12-21 21:57:56,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63712 states, 60439 states have (on average 1.2193947616605172) internal successors, (73699), 60570 states have internal predecessors, (73699), 1639 states have call successors, (1639), 1472 states have call predecessors, (1639), 1632 states have return successors, (1967), 1671 states have call predecessors, (1967), 1639 states have call successors, (1967) [2023-12-21 21:57:56,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63712 states to 63712 states and 77305 transitions. [2023-12-21 21:57:56,220 INFO L78 Accepts]: Start accepts. Automaton has 63712 states and 77305 transitions. Word has length 231 [2023-12-21 21:57:56,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:57:56,221 INFO L495 AbstractCegarLoop]: Abstraction has 63712 states and 77305 transitions. [2023-12-21 21:57:56,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:57:56,221 INFO L276 IsEmpty]: Start isEmpty. Operand 63712 states and 77305 transitions. [2023-12-21 21:57:56,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-21 21:57:56,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:57:56,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:57:56,250 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 [2023-12-21 21:57:56,447 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 [2023-12-21 21:57:56,448 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:57:56,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:57:56,448 INFO L85 PathProgramCache]: Analyzing trace with hash 133261150, now seen corresponding path program 1 times [2023-12-21 21:57:56,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:57:56,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587596131] [2023-12-21 21:57:56,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:57:56,449 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 [2023-12-21 21:57:56,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:57:56,449 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) [2023-12-21 21:57:56,460 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 [2023-12-21 21:57:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:57:56,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:57:56,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:57:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 21:57:56,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:57:56,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:57:56,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587596131] [2023-12-21 21:57:56,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587596131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:57:56,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:57:56,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:57:56,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638902315] [2023-12-21 21:57:56,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:57:56,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:57:56,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:57:56,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:57:56,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:57:56,599 INFO L87 Difference]: Start difference. First operand 63712 states and 77305 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:57:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:57:59,268 INFO L93 Difference]: Finished difference Result 125274 states and 150602 transitions. [2023-12-21 21:57:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:57:59,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 231 [2023-12-21 21:57:59,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:57:59,359 INFO L225 Difference]: With dead ends: 125274 [2023-12-21 21:57:59,360 INFO L226 Difference]: Without dead ends: 63701 [2023-12-21 21:57:59,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:57:59,473 INFO L413 NwaCegarLoop]: 4338 mSDtfsCounter, 411 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 8295 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:57:59,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 8295 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:57:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63701 states. [2023-12-21 21:58:02,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63701 to 63701. [2023-12-21 21:58:02,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63701 states, 60431 states have (on average 1.2193079710744485) internal successors, (73684), 60561 states have internal predecessors, (73684), 1636 states have call successors, (1636), 1472 states have call predecessors, (1636), 1632 states have return successors, (1964), 1668 states have call predecessors, (1964), 1636 states have call successors, (1964) [2023-12-21 21:58:02,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63701 states to 63701 states and 77284 transitions. [2023-12-21 21:58:02,179 INFO L78 Accepts]: Start accepts. Automaton has 63701 states and 77284 transitions. Word has length 231 [2023-12-21 21:58:02,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:58:02,179 INFO L495 AbstractCegarLoop]: Abstraction has 63701 states and 77284 transitions. [2023-12-21 21:58:02,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:58:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 63701 states and 77284 transitions. [2023-12-21 21:58:02,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-21 21:58:02,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:58:02,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:58:02,204 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 (42)] Forceful destruction successful, exit code 0 [2023-12-21 21:58:02,401 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 [2023-12-21 21:58:02,401 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:58:02,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:58:02,402 INFO L85 PathProgramCache]: Analyzing trace with hash -518617435, now seen corresponding path program 1 times [2023-12-21 21:58:02,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:58:02,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864546902] [2023-12-21 21:58:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:58:02,402 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 [2023-12-21 21:58:02,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:58:02,403 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) [2023-12-21 21:58:02,405 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 [2023-12-21 21:58:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:58:02,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:58:02,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:58:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 21:58:02,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:58:02,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:58:02,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864546902] [2023-12-21 21:58:02,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864546902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:58:02,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:58:02,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:58:02,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886357823] [2023-12-21 21:58:02,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:58:02,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:58:02,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:58:02,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:58:02,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:58:02,757 INFO L87 Difference]: Start difference. First operand 63701 states and 77284 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:58:07,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:58:07,758 INFO L93 Difference]: Finished difference Result 210259 states and 250921 transitions. [2023-12-21 21:58:07,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:58:07,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 233 [2023-12-21 21:58:07,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:58:08,109 INFO L225 Difference]: With dead ends: 210259 [2023-12-21 21:58:08,110 INFO L226 Difference]: Without dead ends: 148697 [2023-12-21 21:58:08,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:58:08,158 INFO L413 NwaCegarLoop]: 4408 mSDtfsCounter, 4498 mSDsluCounter, 4548 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4504 SdHoareTripleChecker+Valid, 8956 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 21:58:08,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4504 Valid, 8956 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 21:58:08,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148697 states. [2023-12-21 21:58:13,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148697 to 145975. [2023-12-21 21:58:13,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145975 states, 138478 states have (on average 1.2000173312728375) internal successors, (166176), 139377 states have internal predecessors, (166176), 3143 states have call successors, (3143), 2816 states have call predecessors, (3143), 4352 states have return successors, (5072), 3783 states have call predecessors, (5072), 3143 states have call successors, (5072) [2023-12-21 21:58:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145975 states to 145975 states and 174391 transitions. [2023-12-21 21:58:13,806 INFO L78 Accepts]: Start accepts. Automaton has 145975 states and 174391 transitions. Word has length 233 [2023-12-21 21:58:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:58:13,807 INFO L495 AbstractCegarLoop]: Abstraction has 145975 states and 174391 transitions. [2023-12-21 21:58:13,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:58:13,807 INFO L276 IsEmpty]: Start isEmpty. Operand 145975 states and 174391 transitions. [2023-12-21 21:58:13,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-21 21:58:13,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:58:13,847 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:58:13,851 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 [2023-12-21 21:58:14,051 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 [2023-12-21 21:58:14,051 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:58:14,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:58:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1869027545, now seen corresponding path program 1 times [2023-12-21 21:58:14,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:58:14,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915249522] [2023-12-21 21:58:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:58:14,052 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 [2023-12-21 21:58:14,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:58:14,054 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) [2023-12-21 21:58:14,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-12-21 21:58:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:58:14,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:58:14,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:58:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 21:58:14,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:58:14,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:58:14,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915249522] [2023-12-21 21:58:14,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915249522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:58:14,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:58:14,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:58:14,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851999915] [2023-12-21 21:58:14,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:58:14,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:58:14,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:58:14,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:58:14,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:58:14,258 INFO L87 Difference]: Start difference. First operand 145975 states and 174391 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:58:19,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:58:19,353 INFO L93 Difference]: Finished difference Result 289802 states and 344778 transitions. [2023-12-21 21:58:19,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:58:19,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 233 [2023-12-21 21:58:19,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:58:19,723 INFO L225 Difference]: With dead ends: 289802 [2023-12-21 21:58:19,723 INFO L226 Difference]: Without dead ends: 145965 [2023-12-21 21:58:19,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:58:19,825 INFO L413 NwaCegarLoop]: 4337 mSDtfsCounter, 409 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 8294 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:58:19,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 8294 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:58:19,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145965 states. [2023-12-21 21:58:25,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145965 to 145965. [2023-12-21 21:58:25,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145965 states, 138471 states have (on average 1.1999841121967776) internal successors, (166163), 139369 states have internal predecessors, (166163), 3140 states have call successors, (3140), 2816 states have call predecessors, (3140), 4352 states have return successors, (5068), 3780 states have call predecessors, (5068), 3140 states have call successors, (5068) [2023-12-21 21:58:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145965 states to 145965 states and 174371 transitions. [2023-12-21 21:58:25,563 INFO L78 Accepts]: Start accepts. Automaton has 145965 states and 174371 transitions. Word has length 233 [2023-12-21 21:58:25,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:58:25,564 INFO L495 AbstractCegarLoop]: Abstraction has 145965 states and 174371 transitions. [2023-12-21 21:58:25,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:58:25,564 INFO L276 IsEmpty]: Start isEmpty. Operand 145965 states and 174371 transitions. [2023-12-21 21:58:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-21 21:58:25,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:58:25,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:58:25,648 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 (44)] Ended with exit code 0 [2023-12-21 21:58:25,849 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 [2023-12-21 21:58:25,849 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:58:25,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:58:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1849501280, now seen corresponding path program 1 times [2023-12-21 21:58:25,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:58:25,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482860282] [2023-12-21 21:58:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:58:25,850 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 [2023-12-21 21:58:25,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:58:25,851 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) [2023-12-21 21:58:25,852 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 [2023-12-21 21:58:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:58:26,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:58:26,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:58:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 21:58:26,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:58:26,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:58:26,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482860282] [2023-12-21 21:58:26,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482860282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:58:26,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:58:26,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:58:26,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47133529] [2023-12-21 21:58:26,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:58:26,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:58:26,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:58:26,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:58:26,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:58:26,227 INFO L87 Difference]: Start difference. First operand 145965 states and 174371 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)