/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_label46+token_ring.11.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 22:06:01,884 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 22:06:01,950 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 22:06:01,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 22:06:01,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 22:06:01,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 22:06:01,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 22:06:01,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 22:06:01,978 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 22:06:01,981 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 22:06:01,981 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 22:06:01,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 22:06:01,982 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 22:06:01,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 22:06:01,983 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 22:06:01,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 22:06:01,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 22:06:01,984 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 22:06:01,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 22:06:01,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 22:06:01,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 22:06:01,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 22:06:01,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 22:06:01,986 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 22:06:01,986 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 22:06:01,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 22:06:01,986 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 22:06:01,986 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 22:06:01,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 22:06:01,986 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 22:06:01,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 22:06:01,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 22:06:01,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 22:06:01,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 22:06:01,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 22:06:01,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 22:06:01,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 22:06:01,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 22:06:01,988 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 22:06:01,988 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 22:06:01,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 22:06:01,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 22:06:01,989 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 22:06:01,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 22:06:01,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 22:06:01,989 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 22:06:01,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 22:06:02,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 22:06:02,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 22:06:02,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 22:06:02,205 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 22:06:02,205 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 22:06:02,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.11.cil-2.c [2023-12-21 22:06:03,162 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 22:06:03,581 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 22:06:03,582 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.11.cil-2.c [2023-12-21 22:06:03,628 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d738549/b7d2d356b65642f6adb57e5b35611289/FLAG184486b33 [2023-12-21 22:06:03,642 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d738549/b7d2d356b65642f6adb57e5b35611289 [2023-12-21 22:06:03,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 22:06:03,645 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 22:06:03,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 22:06:03,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 22:06:03,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 22:06:03,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:03,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f6dc1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03, skipping insertion in model container [2023-12-21 22:06:03,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:03,835 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 22:06:05,039 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_label46+token_ring.11.cil-2.c[382357,382370] [2023-12-21 22:06:05,059 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_label46+token_ring.11.cil-2.c[383339,383352] [2023-12-21 22:06:05,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 22:06:05,257 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 22:06:05,842 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_label46+token_ring.11.cil-2.c[382357,382370] [2023-12-21 22:06:05,857 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_label46+token_ring.11.cil-2.c[383339,383352] [2023-12-21 22:06:05,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 22:06:05,920 INFO L206 MainTranslator]: Completed translation [2023-12-21 22:06:05,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05 WrapperNode [2023-12-21 22:06:05,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 22:06:05,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 22:06:05,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 22:06:05,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 22:06:05,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05" (1/1) ... [2023-12-21 22:06:05,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05" (1/1) ... [2023-12-21 22:06:06,242 INFO L138 Inliner]: procedures = 67, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13133 [2023-12-21 22:06:06,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 22:06:06,243 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 22:06:06,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 22:06:06,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 22:06:06,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05" (1/1) ... [2023-12-21 22:06:06,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05" (1/1) ... [2023-12-21 22:06:06,311 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05" (1/1) ... [2023-12-21 22:06:06,399 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 22:06:06,399 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05" (1/1) ... [2023-12-21 22:06:06,400 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05" (1/1) ... [2023-12-21 22:06:06,620 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05" (1/1) ... [2023-12-21 22:06:06,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05" (1/1) ... [2023-12-21 22:06:06,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05" (1/1) ... [2023-12-21 22:06:06,730 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05" (1/1) ... [2023-12-21 22:06:06,788 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 22:06:06,790 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 22:06:06,790 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 22:06:06,790 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 22:06:06,790 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05" (1/1) ... [2023-12-21 22:06:06,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 22:06:06,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 22:06:06,814 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 22:06:06,847 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 22:06:06,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 22:06:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 22:06:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 22:06:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 22:06:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 22:06:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 22:06:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 22:06:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 22:06:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 22:06:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 22:06:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 22:06:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 22:06:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 22:06:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 22:06:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 22:06:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 22:06:07,000 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 22:06:07,002 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 22:06:14,367 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 22:06:14,448 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 22:06:14,448 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-12-21 22:06:14,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:06:14 BoogieIcfgContainer [2023-12-21 22:06:14,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 22:06:14,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 22:06:14,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 22:06:14,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 22:06:14,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:06:03" (1/3) ... [2023-12-21 22:06:14,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f9e6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:06:14, skipping insertion in model container [2023-12-21 22:06:14,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:05" (2/3) ... [2023-12-21 22:06:14,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f9e6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:06:14, skipping insertion in model container [2023-12-21 22:06:14,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:06:14" (3/3) ... [2023-12-21 22:06:14,457 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.11.cil-2.c [2023-12-21 22:06:14,469 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 22:06:14,469 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 22:06:14,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 22:06:14,542 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;@100c927d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 22:06:14,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 22:06:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2414 states have (on average 1.876553438276719) internal successors, (4530), 2417 states have internal predecessors, (4530), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-21 22:06:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:14,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:14,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:14,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:14,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash -259596153, now seen corresponding path program 1 times [2023-12-21 22:06:14,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:14,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281643828] [2023-12-21 22:06:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:14,592 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 22:06:14,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:14,594 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 22:06:14,602 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 22:06:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:14,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:06:14,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:14,844 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 22:06:14,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:14,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:14,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281643828] [2023-12-21 22:06:14,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281643828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:14,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:14,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:06:14,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834961869] [2023-12-21 22:06:14,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:14,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:06:14,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:14,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:06:14,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:14,874 INFO L87 Difference]: Start difference. First operand has 2448 states, 2414 states have (on average 1.876553438276719) internal successors, (4530), 2417 states have internal predecessors, (4530), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 22:06:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:15,022 INFO L93 Difference]: Finished difference Result 4886 states and 9139 transitions. [2023-12-21 22:06:15,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:06:15,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:15,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:15,041 INFO L225 Difference]: With dead ends: 4886 [2023-12-21 22:06:15,041 INFO L226 Difference]: Without dead ends: 2444 [2023-12-21 22:06:15,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 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 22:06:15,051 INFO L413 NwaCegarLoop]: 4443 mSDtfsCounter, 515 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 8402 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:15,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 8402 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:06:15,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2023-12-21 22:06:15,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2444. [2023-12-21 22:06:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 2411 states have (on average 1.838241393612609) internal successors, (4432), 2413 states have internal predecessors, (4432), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-21 22:06:15,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 4482 transitions. [2023-12-21 22:06:15,156 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 4482 transitions. Word has length 151 [2023-12-21 22:06:15,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:15,157 INFO L495 AbstractCegarLoop]: Abstraction has 2444 states and 4482 transitions. [2023-12-21 22:06:15,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 22:06:15,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 4482 transitions. [2023-12-21 22:06:15,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:15,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:15,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:15,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:15,360 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 22:06:15,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:15,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:15,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1876287049, now seen corresponding path program 1 times [2023-12-21 22:06:15,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:15,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37839732] [2023-12-21 22:06:15,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:15,363 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 22:06:15,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:15,366 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 22:06:15,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 22:06:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:15,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:15,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:15,616 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 22:06:15,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:15,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:15,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37839732] [2023-12-21 22:06:15,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37839732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:15,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:15,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:15,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591774689] [2023-12-21 22:06:15,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:15,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:15,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:15,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:15,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:15,624 INFO L87 Difference]: Start difference. First operand 2444 states and 4482 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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 22:06:16,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:16,444 INFO L93 Difference]: Finished difference Result 3101 states and 5561 transitions. [2023-12-21 22:06:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 22:06:16,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:16,454 INFO L225 Difference]: With dead ends: 3101 [2023-12-21 22:06:16,454 INFO L226 Difference]: Without dead ends: 2795 [2023-12-21 22:06:16,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:16,457 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 4969 mSDsluCounter, 8975 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4988 SdHoareTripleChecker+Valid, 13363 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:16,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4988 Valid, 13363 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 22:06:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2023-12-21 22:06:16,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2768. [2023-12-21 22:06:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.8172082717872968) internal successors, (4921), 2711 states have internal predecessors, (4921), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-21 22:06:16,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 5012 transitions. [2023-12-21 22:06:16,521 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 5012 transitions. Word has length 151 [2023-12-21 22:06:16,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:16,521 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 5012 transitions. [2023-12-21 22:06:16,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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 22:06:16,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 5012 transitions. [2023-12-21 22:06:16,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:16,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:16,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:16,535 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 22:06:16,730 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 22:06:16,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:16,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:16,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1755061197, now seen corresponding path program 1 times [2023-12-21 22:06:16,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:16,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709160657] [2023-12-21 22:06:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:16,732 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 22:06:16,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:16,733 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 22:06:16,735 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 22:06:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:16,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:16,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:16,946 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 22:06:16,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:16,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:16,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709160657] [2023-12-21 22:06:16,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709160657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:16,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:16,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:16,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204325232] [2023-12-21 22:06:16,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:16,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:16,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:16,949 INFO L87 Difference]: Start difference. First operand 2768 states and 5012 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:17,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:17,410 INFO L93 Difference]: Finished difference Result 3398 states and 6043 transitions. [2023-12-21 22:06:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:17,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:17,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:17,420 INFO L225 Difference]: With dead ends: 3398 [2023-12-21 22:06:17,420 INFO L226 Difference]: Without dead ends: 2768 [2023-12-21 22:06:17,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:17,424 INFO L413 NwaCegarLoop]: 4285 mSDtfsCounter, 4667 mSDsluCounter, 8428 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 12713 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:17,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4686 Valid, 12713 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:17,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2023-12-21 22:06:17,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2768. [2023-12-21 22:06:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.8146233382570163) internal successors, (4914), 2711 states have internal predecessors, (4914), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-21 22:06:17,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 5005 transitions. [2023-12-21 22:06:17,490 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 5005 transitions. Word has length 151 [2023-12-21 22:06:17,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:17,490 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 5005 transitions. [2023-12-21 22:06:17,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 5005 transitions. [2023-12-21 22:06:17,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:17,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:17,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:17,499 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 22:06:17,697 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 22:06:17,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:17,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:17,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1058414025, now seen corresponding path program 1 times [2023-12-21 22:06:17,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:17,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851776917] [2023-12-21 22:06:17,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:17,698 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 22:06:17,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:17,699 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 22:06:17,703 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 22:06:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:17,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:17,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:17,899 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 22:06:17,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:17,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:17,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851776917] [2023-12-21 22:06:17,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851776917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:17,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:17,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:17,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992286140] [2023-12-21 22:06:17,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:17,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:17,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:17,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:17,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:17,907 INFO L87 Difference]: Start difference. First operand 2768 states and 5005 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:18,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:18,360 INFO L93 Difference]: Finished difference Result 3398 states and 6029 transitions. [2023-12-21 22:06:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:18,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:18,369 INFO L225 Difference]: With dead ends: 3398 [2023-12-21 22:06:18,369 INFO L226 Difference]: Without dead ends: 2768 [2023-12-21 22:06:18,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:18,373 INFO L413 NwaCegarLoop]: 4282 mSDtfsCounter, 4661 mSDsluCounter, 8424 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4680 SdHoareTripleChecker+Valid, 12706 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:18,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4680 Valid, 12706 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2023-12-21 22:06:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2768. [2023-12-21 22:06:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.8120384047267355) internal successors, (4907), 2711 states have internal predecessors, (4907), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-21 22:06:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4998 transitions. [2023-12-21 22:06:18,446 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4998 transitions. Word has length 151 [2023-12-21 22:06:18,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:18,447 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 4998 transitions. [2023-12-21 22:06:18,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:18,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4998 transitions. [2023-12-21 22:06:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:18,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:18,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:18,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-21 22:06:18,653 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 22:06:18,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:18,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:18,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1735005107, now seen corresponding path program 1 times [2023-12-21 22:06:18,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:18,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675391764] [2023-12-21 22:06:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:18,655 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 22:06:18,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:18,656 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 22:06:18,658 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 22:06:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:18,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:18,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:18,859 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 22:06:18,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:18,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:18,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675391764] [2023-12-21 22:06:18,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675391764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:18,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:18,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:18,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990068988] [2023-12-21 22:06:18,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:18,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:18,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:18,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:18,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:18,861 INFO L87 Difference]: Start difference. First operand 2768 states and 4998 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:19,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:19,331 INFO L93 Difference]: Finished difference Result 3398 states and 6015 transitions. [2023-12-21 22:06:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:19,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:19,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:19,340 INFO L225 Difference]: With dead ends: 3398 [2023-12-21 22:06:19,340 INFO L226 Difference]: Without dead ends: 2768 [2023-12-21 22:06:19,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:19,343 INFO L413 NwaCegarLoop]: 4279 mSDtfsCounter, 4655 mSDsluCounter, 8420 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4674 SdHoareTripleChecker+Valid, 12699 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:19,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4674 Valid, 12699 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:19,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2023-12-21 22:06:19,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2768. [2023-12-21 22:06:19,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.809453471196455) internal successors, (4900), 2711 states have internal predecessors, (4900), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-21 22:06:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4991 transitions. [2023-12-21 22:06:19,408 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4991 transitions. Word has length 151 [2023-12-21 22:06:19,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:19,409 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 4991 transitions. [2023-12-21 22:06:19,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:19,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4991 transitions. [2023-12-21 22:06:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:19,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:19,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:19,417 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 22:06:19,615 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 22:06:19,616 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:19,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:19,616 INFO L85 PathProgramCache]: Analyzing trace with hash 945831241, now seen corresponding path program 1 times [2023-12-21 22:06:19,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:19,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135629658] [2023-12-21 22:06:19,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:19,617 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 22:06:19,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:19,618 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 22:06:19,622 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 22:06:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:19,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:19,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:19,827 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 22:06:19,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:19,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:19,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135629658] [2023-12-21 22:06:19,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135629658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:19,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:19,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:19,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585468835] [2023-12-21 22:06:19,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:19,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:19,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:19,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:19,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:19,829 INFO L87 Difference]: Start difference. First operand 2768 states and 4991 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:20,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:20,266 INFO L93 Difference]: Finished difference Result 3398 states and 6001 transitions. [2023-12-21 22:06:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:20,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:20,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:20,275 INFO L225 Difference]: With dead ends: 3398 [2023-12-21 22:06:20,275 INFO L226 Difference]: Without dead ends: 2768 [2023-12-21 22:06:20,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:20,278 INFO L413 NwaCegarLoop]: 4276 mSDtfsCounter, 4649 mSDsluCounter, 8416 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 12692 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:20,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4668 Valid, 12692 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:06:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2023-12-21 22:06:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2768. [2023-12-21 22:06:20,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.8068685376661744) internal successors, (4893), 2711 states have internal predecessors, (4893), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-21 22:06:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4984 transitions. [2023-12-21 22:06:20,343 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4984 transitions. Word has length 151 [2023-12-21 22:06:20,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:20,343 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 4984 transitions. [2023-12-21 22:06:20,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:20,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4984 transitions. [2023-12-21 22:06:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:20,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:20,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:20,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:20,552 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 22:06:20,552 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:20,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:20,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1170857165, now seen corresponding path program 1 times [2023-12-21 22:06:20,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:20,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14190330] [2023-12-21 22:06:20,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:20,554 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 22:06:20,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:20,555 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 22:06:20,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 22:06:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:20,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:20,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:20,746 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 22:06:20,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:20,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:20,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14190330] [2023-12-21 22:06:20,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14190330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:20,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:20,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:20,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843743186] [2023-12-21 22:06:20,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:20,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:20,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:20,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:20,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:20,749 INFO L87 Difference]: Start difference. First operand 2768 states and 4984 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:21,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:21,167 INFO L93 Difference]: Finished difference Result 3398 states and 5987 transitions. [2023-12-21 22:06:21,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:21,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:21,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:21,176 INFO L225 Difference]: With dead ends: 3398 [2023-12-21 22:06:21,176 INFO L226 Difference]: Without dead ends: 2768 [2023-12-21 22:06:21,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:21,179 INFO L413 NwaCegarLoop]: 4273 mSDtfsCounter, 4643 mSDsluCounter, 8412 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4662 SdHoareTripleChecker+Valid, 12685 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:21,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4662 Valid, 12685 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:06:21,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2023-12-21 22:06:21,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2768. [2023-12-21 22:06:21,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.8042836041358936) internal successors, (4886), 2711 states have internal predecessors, (4886), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-21 22:06:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4977 transitions. [2023-12-21 22:06:21,238 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4977 transitions. Word has length 151 [2023-12-21 22:06:21,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:21,238 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 4977 transitions. [2023-12-21 22:06:21,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:21,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4977 transitions. [2023-12-21 22:06:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:21,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:21,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:21,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:21,447 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 22:06:21,448 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:21,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:21,448 INFO L85 PathProgramCache]: Analyzing trace with hash 346832073, now seen corresponding path program 1 times [2023-12-21 22:06:21,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:21,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986196242] [2023-12-21 22:06:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:21,449 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 22:06:21,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:21,450 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 22:06:21,452 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 22:06:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:21,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:21,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:21,653 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 22:06:21,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:21,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:21,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986196242] [2023-12-21 22:06:21,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986196242] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:21,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:21,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:21,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493372119] [2023-12-21 22:06:21,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:21,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:21,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:21,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:21,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:21,655 INFO L87 Difference]: Start difference. First operand 2768 states and 4977 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:22,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:22,180 INFO L93 Difference]: Finished difference Result 3398 states and 5973 transitions. [2023-12-21 22:06:22,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:22,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:22,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:22,196 INFO L225 Difference]: With dead ends: 3398 [2023-12-21 22:06:22,196 INFO L226 Difference]: Without dead ends: 2768 [2023-12-21 22:06:22,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:22,199 INFO L413 NwaCegarLoop]: 4270 mSDtfsCounter, 4636 mSDsluCounter, 8408 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4655 SdHoareTripleChecker+Valid, 12678 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:22,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4655 Valid, 12678 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:06:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2023-12-21 22:06:22,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2768. [2023-12-21 22:06:22,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.801698670605613) internal successors, (4879), 2711 states have internal predecessors, (4879), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-21 22:06:22,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4970 transitions. [2023-12-21 22:06:22,252 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4970 transitions. Word has length 151 [2023-12-21 22:06:22,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:22,253 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 4970 transitions. [2023-12-21 22:06:22,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4970 transitions. [2023-12-21 22:06:22,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:22,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:22,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:22,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:22,459 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 22:06:22,459 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:22,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:22,460 INFO L85 PathProgramCache]: Analyzing trace with hash -950113339, now seen corresponding path program 1 times [2023-12-21 22:06:22,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:22,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830636340] [2023-12-21 22:06:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:22,461 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 22:06:22,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:22,462 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 22:06:22,466 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 22:06:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:22,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:22,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:22,659 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 22:06:22,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:22,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:22,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830636340] [2023-12-21 22:06:22,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830636340] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:22,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:22,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:22,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127611087] [2023-12-21 22:06:22,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:22,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:22,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:22,661 INFO L87 Difference]: Start difference. First operand 2768 states and 4970 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:23,061 INFO L93 Difference]: Finished difference Result 3398 states and 5959 transitions. [2023-12-21 22:06:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:23,069 INFO L225 Difference]: With dead ends: 3398 [2023-12-21 22:06:23,069 INFO L226 Difference]: Without dead ends: 2768 [2023-12-21 22:06:23,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:23,072 INFO L413 NwaCegarLoop]: 4267 mSDtfsCounter, 4630 mSDsluCounter, 8404 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4649 SdHoareTripleChecker+Valid, 12671 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:23,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4649 Valid, 12671 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:06:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2023-12-21 22:06:23,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2768. [2023-12-21 22:06:23,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.7991137370753323) internal successors, (4872), 2711 states have internal predecessors, (4872), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-21 22:06:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4963 transitions. [2023-12-21 22:06:23,128 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4963 transitions. Word has length 151 [2023-12-21 22:06:23,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:23,129 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 4963 transitions. [2023-12-21 22:06:23,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:23,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4963 transitions. [2023-12-21 22:06:23,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:23,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:23,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:23,144 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 22:06:23,335 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 22:06:23,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:23,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:23,336 INFO L85 PathProgramCache]: Analyzing trace with hash -160666295, now seen corresponding path program 1 times [2023-12-21 22:06:23,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:23,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422499522] [2023-12-21 22:06:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:23,337 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 22:06:23,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:23,338 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 22:06:23,342 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 22:06:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:23,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:23,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:23,556 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 22:06:23,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:23,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:23,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422499522] [2023-12-21 22:06:23,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422499522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:23,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:23,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:23,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952752757] [2023-12-21 22:06:23,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:23,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:23,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:23,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:23,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:23,558 INFO L87 Difference]: Start difference. First operand 2768 states and 4963 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:23,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:23,977 INFO L93 Difference]: Finished difference Result 3398 states and 5945 transitions. [2023-12-21 22:06:23,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:23,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:23,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:23,986 INFO L225 Difference]: With dead ends: 3398 [2023-12-21 22:06:23,986 INFO L226 Difference]: Without dead ends: 2768 [2023-12-21 22:06:23,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:23,990 INFO L413 NwaCegarLoop]: 4264 mSDtfsCounter, 4624 mSDsluCounter, 8400 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4643 SdHoareTripleChecker+Valid, 12664 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:23,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4643 Valid, 12664 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:06:23,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2023-12-21 22:06:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2768. [2023-12-21 22:06:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.7965288035450517) internal successors, (4865), 2711 states have internal predecessors, (4865), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-21 22:06:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4956 transitions. [2023-12-21 22:06:24,045 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4956 transitions. Word has length 151 [2023-12-21 22:06:24,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:24,045 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 4956 transitions. [2023-12-21 22:06:24,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4956 transitions. [2023-12-21 22:06:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:24,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:24,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:24,064 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 22:06:24,251 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 22:06:24,252 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:24,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:24,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1936315579, now seen corresponding path program 1 times [2023-12-21 22:06:24,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:24,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931065066] [2023-12-21 22:06:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:24,253 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 22:06:24,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:24,254 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 22:06:24,254 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 22:06:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:24,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:24,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:24,441 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 22:06:24,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:24,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:24,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931065066] [2023-12-21 22:06:24,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931065066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:24,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:24,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:24,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731388077] [2023-12-21 22:06:24,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:24,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:24,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:24,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:24,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:24,443 INFO L87 Difference]: Start difference. First operand 2768 states and 4956 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:24,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:24,814 INFO L93 Difference]: Finished difference Result 3398 states and 5931 transitions. [2023-12-21 22:06:24,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:24,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:24,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:24,820 INFO L225 Difference]: With dead ends: 3398 [2023-12-21 22:06:24,820 INFO L226 Difference]: Without dead ends: 2768 [2023-12-21 22:06:24,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:24,822 INFO L413 NwaCegarLoop]: 4261 mSDtfsCounter, 4618 mSDsluCounter, 8396 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 12657 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:24,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 12657 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:06:24,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2023-12-21 22:06:24,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2768. [2023-12-21 22:06:24,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.793943870014771) internal successors, (4858), 2711 states have internal predecessors, (4858), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-21 22:06:24,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4949 transitions. [2023-12-21 22:06:24,874 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4949 transitions. Word has length 151 [2023-12-21 22:06:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:24,874 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 4949 transitions. [2023-12-21 22:06:24,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:24,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4949 transitions. [2023-12-21 22:06:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:24,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:24,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:24,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:25,080 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 22:06:25,080 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:25,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:25,081 INFO L85 PathProgramCache]: Analyzing trace with hash -746668599, now seen corresponding path program 1 times [2023-12-21 22:06:25,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:25,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717846921] [2023-12-21 22:06:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:25,081 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 22:06:25,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:25,082 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 22:06:25,108 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 22:06:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:25,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:25,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:25,269 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 22:06:25,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:25,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:25,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717846921] [2023-12-21 22:06:25,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717846921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:25,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:25,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:25,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346556410] [2023-12-21 22:06:25,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:25,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:25,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:25,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:25,271 INFO L87 Difference]: Start difference. First operand 2768 states and 4949 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:25,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:25,671 INFO L93 Difference]: Finished difference Result 3398 states and 5917 transitions. [2023-12-21 22:06:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:25,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:25,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:25,689 INFO L225 Difference]: With dead ends: 3398 [2023-12-21 22:06:25,689 INFO L226 Difference]: Without dead ends: 2768 [2023-12-21 22:06:25,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:25,691 INFO L413 NwaCegarLoop]: 4258 mSDtfsCounter, 4612 mSDsluCounter, 8392 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4631 SdHoareTripleChecker+Valid, 12650 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:25,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4631 Valid, 12650 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:06:25,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2023-12-21 22:06:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2768. [2023-12-21 22:06:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.7913589364844904) internal successors, (4851), 2711 states have internal predecessors, (4851), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-12-21 22:06:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4942 transitions. [2023-12-21 22:06:25,742 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4942 transitions. Word has length 151 [2023-12-21 22:06:25,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:25,742 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 4942 transitions. [2023-12-21 22:06:25,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4942 transitions. [2023-12-21 22:06:25,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:25,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:25,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:25,783 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 22:06:25,950 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 22:06:25,951 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:25,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1816671547, now seen corresponding path program 1 times [2023-12-21 22:06:25,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:25,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942956317] [2023-12-21 22:06:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:25,952 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 22:06:25,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:25,953 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 22:06:25,953 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 22:06:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:26,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:26,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:26,146 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 22:06:26,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:26,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:26,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1942956317] [2023-12-21 22:06:26,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1942956317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:26,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:26,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:26,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376749502] [2023-12-21 22:06:26,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:26,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:26,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:26,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:26,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:26,148 INFO L87 Difference]: Start difference. First operand 2768 states and 4942 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:26,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:26,720 INFO L93 Difference]: Finished difference Result 3552 states and 6155 transitions. [2023-12-21 22:06:26,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:26,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:26,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:26,724 INFO L225 Difference]: With dead ends: 3552 [2023-12-21 22:06:26,724 INFO L226 Difference]: Without dead ends: 2922 [2023-12-21 22:06:26,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:26,726 INFO L413 NwaCegarLoop]: 4256 mSDtfsCounter, 4711 mSDsluCounter, 8388 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4730 SdHoareTripleChecker+Valid, 12644 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:26,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4730 Valid, 12644 Invalid, 618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2023-12-21 22:06:26,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2922. [2023-12-21 22:06:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2856 states have (on average 1.772408963585434) internal successors, (5062), 2859 states have internal predecessors, (5062), 47 states have call successors, (47), 16 states have call predecessors, (47), 17 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 22:06:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 5157 transitions. [2023-12-21 22:06:26,779 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 5157 transitions. Word has length 151 [2023-12-21 22:06:26,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:26,779 INFO L495 AbstractCegarLoop]: Abstraction has 2922 states and 5157 transitions. [2023-12-21 22:06:26,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 5157 transitions. [2023-12-21 22:06:26,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:26,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:26,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:26,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:26,985 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 22:06:26,986 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:26,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:26,986 INFO L85 PathProgramCache]: Analyzing trace with hash 602739914, now seen corresponding path program 1 times [2023-12-21 22:06:26,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:26,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025154567] [2023-12-21 22:06:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:26,987 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 22:06:26,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:26,988 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 22:06:26,989 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 22:06:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:27,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:27,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:27,171 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 22:06:27,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:27,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:27,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025154567] [2023-12-21 22:06:27,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025154567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:27,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:27,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:27,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571083857] [2023-12-21 22:06:27,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:27,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:27,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:27,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:27,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:27,173 INFO L87 Difference]: Start difference. First operand 2922 states and 5157 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:27,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:27,697 INFO L93 Difference]: Finished difference Result 3860 states and 6585 transitions. [2023-12-21 22:06:27,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:27,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:27,702 INFO L225 Difference]: With dead ends: 3860 [2023-12-21 22:06:27,702 INFO L226 Difference]: Without dead ends: 3076 [2023-12-21 22:06:27,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:27,705 INFO L413 NwaCegarLoop]: 4253 mSDtfsCounter, 4704 mSDsluCounter, 8384 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 12637 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:27,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4723 Valid, 12637 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:27,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2023-12-21 22:06:27,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3076. [2023-12-21 22:06:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 3004 states have (on average 1.753994673768309) internal successors, (5269), 3007 states have internal predecessors, (5269), 49 states have call successors, (49), 20 states have call predecessors, (49), 21 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2023-12-21 22:06:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 5368 transitions. [2023-12-21 22:06:27,758 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 5368 transitions. Word has length 151 [2023-12-21 22:06:27,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:27,758 INFO L495 AbstractCegarLoop]: Abstraction has 3076 states and 5368 transitions. [2023-12-21 22:06:27,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:27,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 5368 transitions. [2023-12-21 22:06:27,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:27,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:27,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:27,772 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 22:06:27,963 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 22:06:27,964 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:27,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:27,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1749208890, now seen corresponding path program 1 times [2023-12-21 22:06:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:27,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509708109] [2023-12-21 22:06:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:27,965 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 22:06:27,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:27,966 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 22:06:27,966 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 22:06:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:28,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:28,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:28,136 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 22:06:28,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:28,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:28,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509708109] [2023-12-21 22:06:28,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509708109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:28,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:28,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:28,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880226528] [2023-12-21 22:06:28,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:28,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:28,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:28,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:28,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:28,138 INFO L87 Difference]: Start difference. First operand 3076 states and 5368 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:28,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:28,618 INFO L93 Difference]: Finished difference Result 4168 states and 7007 transitions. [2023-12-21 22:06:28,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:28,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:28,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:28,624 INFO L225 Difference]: With dead ends: 4168 [2023-12-21 22:06:28,624 INFO L226 Difference]: Without dead ends: 3230 [2023-12-21 22:06:28,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:28,627 INFO L413 NwaCegarLoop]: 4250 mSDtfsCounter, 4697 mSDsluCounter, 8380 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4716 SdHoareTripleChecker+Valid, 12630 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:28,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4716 Valid, 12630 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:28,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2023-12-21 22:06:28,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 3230. [2023-12-21 22:06:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3230 states, 3152 states have (on average 1.736040609137056) internal successors, (5472), 3155 states have internal predecessors, (5472), 51 states have call successors, (51), 24 states have call predecessors, (51), 25 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2023-12-21 22:06:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3230 states to 3230 states and 5575 transitions. [2023-12-21 22:06:28,689 INFO L78 Accepts]: Start accepts. Automaton has 3230 states and 5575 transitions. Word has length 151 [2023-12-21 22:06:28,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:28,690 INFO L495 AbstractCegarLoop]: Abstraction has 3230 states and 5575 transitions. [2023-12-21 22:06:28,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:28,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3230 states and 5575 transitions. [2023-12-21 22:06:28,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:28,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:28,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:28,698 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 22:06:28,896 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 22:06:28,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:28,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash -817618079, now seen corresponding path program 1 times [2023-12-21 22:06:28,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:28,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345093965] [2023-12-21 22:06:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:28,897 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 22:06:28,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:28,898 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 22:06:28,932 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 22:06:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:29,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:29,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:29,073 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 22:06:29,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:29,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:29,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345093965] [2023-12-21 22:06:29,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345093965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:29,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:29,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:29,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795628638] [2023-12-21 22:06:29,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:29,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:29,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:29,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:29,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:29,075 INFO L87 Difference]: Start difference. First operand 3230 states and 5575 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:29,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:29,564 INFO L93 Difference]: Finished difference Result 4476 states and 7421 transitions. [2023-12-21 22:06:29,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:29,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:29,573 INFO L225 Difference]: With dead ends: 4476 [2023-12-21 22:06:29,574 INFO L226 Difference]: Without dead ends: 3384 [2023-12-21 22:06:29,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:29,576 INFO L413 NwaCegarLoop]: 4247 mSDtfsCounter, 4690 mSDsluCounter, 8376 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4709 SdHoareTripleChecker+Valid, 12623 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:29,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4709 Valid, 12623 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:29,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2023-12-21 22:06:29,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 3384. [2023-12-21 22:06:29,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3384 states, 3300 states have (on average 1.7184848484848485) internal successors, (5671), 3303 states have internal predecessors, (5671), 53 states have call successors, (53), 28 states have call predecessors, (53), 29 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2023-12-21 22:06:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3384 states to 3384 states and 5778 transitions. [2023-12-21 22:06:29,640 INFO L78 Accepts]: Start accepts. Automaton has 3384 states and 5778 transitions. Word has length 151 [2023-12-21 22:06:29,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:29,640 INFO L495 AbstractCegarLoop]: Abstraction has 3384 states and 5778 transitions. [2023-12-21 22:06:29,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:29,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3384 states and 5778 transitions. [2023-12-21 22:06:29,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:29,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:29,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:29,649 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 22:06:29,846 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 22:06:29,846 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:29,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:29,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1251862757, now seen corresponding path program 1 times [2023-12-21 22:06:29,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:29,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1626758631] [2023-12-21 22:06:29,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:29,847 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 22:06:29,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:29,848 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 22:06:29,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-21 22:06:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:29,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:29,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:30,036 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 22:06:30,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:30,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:30,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1626758631] [2023-12-21 22:06:30,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1626758631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:30,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:30,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:30,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162648781] [2023-12-21 22:06:30,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:30,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:30,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:30,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:30,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:30,039 INFO L87 Difference]: Start difference. First operand 3384 states and 5778 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:30,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:30,587 INFO L93 Difference]: Finished difference Result 4784 states and 7827 transitions. [2023-12-21 22:06:30,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:30,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:30,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:30,594 INFO L225 Difference]: With dead ends: 4784 [2023-12-21 22:06:30,594 INFO L226 Difference]: Without dead ends: 3538 [2023-12-21 22:06:30,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:30,597 INFO L413 NwaCegarLoop]: 4244 mSDtfsCounter, 4683 mSDsluCounter, 8372 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 12616 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:30,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4702 Valid, 12616 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:06:30,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2023-12-21 22:06:30,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 3538. [2023-12-21 22:06:30,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3448 states have (on average 1.701276102088167) internal successors, (5866), 3451 states have internal predecessors, (5866), 55 states have call successors, (55), 32 states have call predecessors, (55), 33 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2023-12-21 22:06:30,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5977 transitions. [2023-12-21 22:06:30,736 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5977 transitions. Word has length 151 [2023-12-21 22:06:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:30,737 INFO L495 AbstractCegarLoop]: Abstraction has 3538 states and 5977 transitions. [2023-12-21 22:06:30,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5977 transitions. [2023-12-21 22:06:30,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:30,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:30,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:30,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:30,942 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 22:06:30,943 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:30,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:30,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1842582848, now seen corresponding path program 1 times [2023-12-21 22:06:30,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:30,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251914069] [2023-12-21 22:06:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:30,944 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 22:06:30,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:30,945 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 22:06:30,946 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 22:06:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:31,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:31,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:31,117 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 22:06:31,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:31,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:31,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251914069] [2023-12-21 22:06:31,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251914069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:31,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:31,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:31,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367711590] [2023-12-21 22:06:31,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:31,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:31,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:31,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:31,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:31,119 INFO L87 Difference]: Start difference. First operand 3538 states and 5977 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:31,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:31,618 INFO L93 Difference]: Finished difference Result 5092 states and 8225 transitions. [2023-12-21 22:06:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:31,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:31,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:31,624 INFO L225 Difference]: With dead ends: 5092 [2023-12-21 22:06:31,624 INFO L226 Difference]: Without dead ends: 3692 [2023-12-21 22:06:31,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:31,627 INFO L413 NwaCegarLoop]: 4241 mSDtfsCounter, 4676 mSDsluCounter, 8368 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4695 SdHoareTripleChecker+Valid, 12609 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:31,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4695 Valid, 12609 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:31,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3692 states. [2023-12-21 22:06:31,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3692 to 3692. [2023-12-21 22:06:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 3596 states have (on average 1.6843715239154615) internal successors, (6057), 3599 states have internal predecessors, (6057), 57 states have call successors, (57), 36 states have call predecessors, (57), 37 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2023-12-21 22:06:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 6172 transitions. [2023-12-21 22:06:31,700 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 6172 transitions. Word has length 151 [2023-12-21 22:06:31,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:31,701 INFO L495 AbstractCegarLoop]: Abstraction has 3692 states and 6172 transitions. [2023-12-21 22:06:31,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 6172 transitions. [2023-12-21 22:06:31,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:31,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:31,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:31,706 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 22:06:31,906 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 22:06:31,907 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:31,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:31,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1764289476, now seen corresponding path program 1 times [2023-12-21 22:06:31,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:31,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026397812] [2023-12-21 22:06:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:31,908 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 22:06:31,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:31,909 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 22:06:31,911 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 22:06:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:32,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:32,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:32,093 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 22:06:32,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:32,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:32,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026397812] [2023-12-21 22:06:32,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026397812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:32,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:32,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:32,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901636795] [2023-12-21 22:06:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:32,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:32,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:32,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:32,095 INFO L87 Difference]: Start difference. First operand 3692 states and 6172 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:32,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:32,587 INFO L93 Difference]: Finished difference Result 5400 states and 8615 transitions. [2023-12-21 22:06:32,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:32,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:32,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:32,599 INFO L225 Difference]: With dead ends: 5400 [2023-12-21 22:06:32,599 INFO L226 Difference]: Without dead ends: 3846 [2023-12-21 22:06:32,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:32,603 INFO L413 NwaCegarLoop]: 4238 mSDtfsCounter, 4669 mSDsluCounter, 8364 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 12602 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:32,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4688 Valid, 12602 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2023-12-21 22:06:32,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 3846. [2023-12-21 22:06:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3744 states have (on average 1.6677350427350428) internal successors, (6244), 3747 states have internal predecessors, (6244), 59 states have call successors, (59), 40 states have call predecessors, (59), 41 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2023-12-21 22:06:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 6363 transitions. [2023-12-21 22:06:32,690 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 6363 transitions. Word has length 151 [2023-12-21 22:06:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:32,690 INFO L495 AbstractCegarLoop]: Abstraction has 3846 states and 6363 transitions. [2023-12-21 22:06:32,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 6363 transitions. [2023-12-21 22:06:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:32,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:32,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:32,708 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 22:06:32,896 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 22:06:32,896 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:32,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2653729, now seen corresponding path program 1 times [2023-12-21 22:06:32,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:32,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331013135] [2023-12-21 22:06:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:32,897 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 22:06:32,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:32,898 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 22:06:32,933 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 22:06:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:33,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:33,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:33,070 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 22:06:33,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:33,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:33,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331013135] [2023-12-21 22:06:33,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331013135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:33,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:33,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:33,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885468317] [2023-12-21 22:06:33,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:33,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:33,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:33,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:33,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:33,072 INFO L87 Difference]: Start difference. First operand 3846 states and 6363 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:33,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:33,591 INFO L93 Difference]: Finished difference Result 5708 states and 8997 transitions. [2023-12-21 22:06:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:33,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:33,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:33,598 INFO L225 Difference]: With dead ends: 5708 [2023-12-21 22:06:33,598 INFO L226 Difference]: Without dead ends: 4000 [2023-12-21 22:06:33,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:33,603 INFO L413 NwaCegarLoop]: 4235 mSDtfsCounter, 4662 mSDsluCounter, 8360 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 12595 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:33,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 12595 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:33,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2023-12-21 22:06:33,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 4000. [2023-12-21 22:06:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4000 states, 3892 states have (on average 1.6513360739979446) internal successors, (6427), 3895 states have internal predecessors, (6427), 61 states have call successors, (61), 44 states have call predecessors, (61), 45 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2023-12-21 22:06:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4000 states to 4000 states and 6550 transitions. [2023-12-21 22:06:33,696 INFO L78 Accepts]: Start accepts. Automaton has 4000 states and 6550 transitions. Word has length 151 [2023-12-21 22:06:33,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:33,697 INFO L495 AbstractCegarLoop]: Abstraction has 4000 states and 6550 transitions. [2023-12-21 22:06:33,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:33,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4000 states and 6550 transitions. [2023-12-21 22:06:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:33,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:33,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:33,705 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 (21)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:33,902 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 22:06:33,902 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:33,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:33,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1227314845, now seen corresponding path program 1 times [2023-12-21 22:06:33,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:33,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122418322] [2023-12-21 22:06:33,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:33,903 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 22:06:33,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:33,904 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 22:06:33,905 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 22:06:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:34,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:34,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:34,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:34,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:34,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122418322] [2023-12-21 22:06:34,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122418322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:34,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:34,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:34,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205665013] [2023-12-21 22:06:34,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:34,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:34,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:34,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:34,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:34,090 INFO L87 Difference]: Start difference. First operand 4000 states and 6550 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:34,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:34,594 INFO L93 Difference]: Finished difference Result 6016 states and 9371 transitions. [2023-12-21 22:06:34,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:34,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:34,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:34,600 INFO L225 Difference]: With dead ends: 6016 [2023-12-21 22:06:34,600 INFO L226 Difference]: Without dead ends: 4154 [2023-12-21 22:06:34,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:34,603 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 4655 mSDsluCounter, 8356 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4674 SdHoareTripleChecker+Valid, 12588 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:34,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4674 Valid, 12588 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:34,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4154 states. [2023-12-21 22:06:34,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4154 to 4154. [2023-12-21 22:06:34,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4154 states, 4040 states have (on average 1.635148514851485) internal successors, (6606), 4043 states have internal predecessors, (6606), 63 states have call successors, (63), 48 states have call predecessors, (63), 49 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2023-12-21 22:06:34,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 6733 transitions. [2023-12-21 22:06:34,781 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 6733 transitions. Word has length 151 [2023-12-21 22:06:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:34,781 INFO L495 AbstractCegarLoop]: Abstraction has 4154 states and 6733 transitions. [2023-12-21 22:06:34,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:34,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 6733 transitions. [2023-12-21 22:06:34,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:34,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:34,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:34,790 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 22:06:34,982 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 22:06:34,983 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:34,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:34,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1022994114, now seen corresponding path program 1 times [2023-12-21 22:06:34,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:34,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436354225] [2023-12-21 22:06:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:34,984 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 22:06:34,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:34,985 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 22:06:35,017 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 22:06:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:35,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:35,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:35,171 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 22:06:35,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:35,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:35,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436354225] [2023-12-21 22:06:35,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436354225] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:35,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:35,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:35,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358856402] [2023-12-21 22:06:35,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:35,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:35,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:35,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:35,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:35,173 INFO L87 Difference]: Start difference. First operand 4154 states and 6733 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:35,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:35,680 INFO L93 Difference]: Finished difference Result 6324 states and 9737 transitions. [2023-12-21 22:06:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:35,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:35,687 INFO L225 Difference]: With dead ends: 6324 [2023-12-21 22:06:35,687 INFO L226 Difference]: Without dead ends: 4308 [2023-12-21 22:06:35,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 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 22:06:35,690 INFO L413 NwaCegarLoop]: 4229 mSDtfsCounter, 4647 mSDsluCounter, 8352 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 12581 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:35,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4666 Valid, 12581 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:35,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2023-12-21 22:06:35,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 4308. [2023-12-21 22:06:35,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4188 states have (on average 1.619149952244508) internal successors, (6781), 4191 states have internal predecessors, (6781), 65 states have call successors, (65), 52 states have call predecessors, (65), 53 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2023-12-21 22:06:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 6912 transitions. [2023-12-21 22:06:35,785 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 6912 transitions. Word has length 151 [2023-12-21 22:06:35,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:35,785 INFO L495 AbstractCegarLoop]: Abstraction has 4308 states and 6912 transitions. [2023-12-21 22:06:35,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:35,785 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 6912 transitions. [2023-12-21 22:06:35,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:35,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:35,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:35,791 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 (23)] Ended with exit code 0 [2023-12-21 22:06:35,990 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 22:06:35,990 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:35,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:35,991 INFO L85 PathProgramCache]: Analyzing trace with hash 737497817, now seen corresponding path program 1 times [2023-12-21 22:06:35,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:35,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930199836] [2023-12-21 22:06:35,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:35,991 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 22:06:35,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:35,992 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 22:06:35,993 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 22:06:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:36,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:36,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:36,123 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 22:06:36,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:36,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:36,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930199836] [2023-12-21 22:06:36,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930199836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:36,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:36,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:36,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980766691] [2023-12-21 22:06:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:36,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:36,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:36,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:36,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:36,125 INFO L87 Difference]: Start difference. First operand 4308 states and 6912 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:36,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:36,295 INFO L93 Difference]: Finished difference Result 6617 states and 10074 transitions. [2023-12-21 22:06:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:36,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:36,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:36,302 INFO L225 Difference]: With dead ends: 6617 [2023-12-21 22:06:36,302 INFO L226 Difference]: Without dead ends: 4448 [2023-12-21 22:06:36,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 148 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 22:06:36,308 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 101 mSDsluCounter, 8746 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 13126 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:36,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 13126 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:36,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2023-12-21 22:06:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 4312. [2023-12-21 22:06:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4192 states have (on average 1.6137881679389312) internal successors, (6765), 4195 states have internal predecessors, (6765), 65 states have call successors, (65), 52 states have call predecessors, (65), 53 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2023-12-21 22:06:36,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 6896 transitions. [2023-12-21 22:06:36,411 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 6896 transitions. Word has length 151 [2023-12-21 22:06:36,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:36,412 INFO L495 AbstractCegarLoop]: Abstraction has 4312 states and 6896 transitions. [2023-12-21 22:06:36,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:36,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 6896 transitions. [2023-12-21 22:06:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:36,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:36,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:36,420 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 22:06:36,618 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 22:06:36,618 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:36,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:36,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1659972713, now seen corresponding path program 1 times [2023-12-21 22:06:36,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:36,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590299107] [2023-12-21 22:06:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:36,619 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 22:06:36,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:36,620 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 22:06:36,653 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 22:06:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:36,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:36,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:36,750 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 22:06:36,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:36,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:36,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590299107] [2023-12-21 22:06:36,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590299107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:36,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:36,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:36,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993487605] [2023-12-21 22:06:36,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:36,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:36,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:36,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:36,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:36,751 INFO L87 Difference]: Start difference. First operand 4312 states and 6896 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:36,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:36,934 INFO L93 Difference]: Finished difference Result 6613 states and 10026 transitions. [2023-12-21 22:06:36,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:36,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:36,942 INFO L225 Difference]: With dead ends: 6613 [2023-12-21 22:06:36,943 INFO L226 Difference]: Without dead ends: 4440 [2023-12-21 22:06:36,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 148 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 22:06:36,947 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 92 mSDsluCounter, 8747 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 13127 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:36,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 13127 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:36,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2023-12-21 22:06:37,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 4316. [2023-12-21 22:06:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4316 states, 4196 states have (on average 1.6084366062917064) internal successors, (6749), 4199 states have internal predecessors, (6749), 65 states have call successors, (65), 52 states have call predecessors, (65), 53 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2023-12-21 22:06:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4316 states to 4316 states and 6880 transitions. [2023-12-21 22:06:37,047 INFO L78 Accepts]: Start accepts. Automaton has 4316 states and 6880 transitions. Word has length 151 [2023-12-21 22:06:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:37,048 INFO L495 AbstractCegarLoop]: Abstraction has 4316 states and 6880 transitions. [2023-12-21 22:06:37,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:37,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4316 states and 6880 transitions. [2023-12-21 22:06:37,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:37,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:37,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:37,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-21 22:06:37,253 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 22:06:37,253 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:37,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:37,253 INFO L85 PathProgramCache]: Analyzing trace with hash -308587495, now seen corresponding path program 1 times [2023-12-21 22:06:37,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:37,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692800295] [2023-12-21 22:06:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:37,255 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 22:06:37,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:37,256 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 22:06:37,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-21 22:06:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:37,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:06:37,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:37,433 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 22:06:37,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:37,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:37,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692800295] [2023-12-21 22:06:37,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692800295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:37,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:37,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 22:06:37,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293145056] [2023-12-21 22:06:37,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:37,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:06:37,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:37,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:06:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:37,435 INFO L87 Difference]: Start difference. First operand 4316 states and 6880 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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 22:06:37,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:37,650 INFO L93 Difference]: Finished difference Result 8487 states and 12450 transitions. [2023-12-21 22:06:37,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:06:37,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:37,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:37,659 INFO L225 Difference]: With dead ends: 8487 [2023-12-21 22:06:37,659 INFO L226 Difference]: Without dead ends: 6310 [2023-12-21 22:06:37,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 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 22:06:37,663 INFO L413 NwaCegarLoop]: 4436 mSDtfsCounter, 4352 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4352 SdHoareTripleChecker+Valid, 4822 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:37,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4352 Valid, 4822 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6310 states. [2023-12-21 22:06:37,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6310 to 6306. [2023-12-21 22:06:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6306 states, 6080 states have (on average 1.5202302631578948) internal successors, (9243), 6084 states have internal predecessors, (9243), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2023-12-21 22:06:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6306 states to 6306 states and 9489 transitions. [2023-12-21 22:06:37,893 INFO L78 Accepts]: Start accepts. Automaton has 6306 states and 9489 transitions. Word has length 151 [2023-12-21 22:06:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:37,893 INFO L495 AbstractCegarLoop]: Abstraction has 6306 states and 9489 transitions. [2023-12-21 22:06:37,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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 22:06:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 6306 states and 9489 transitions. [2023-12-21 22:06:37,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:37,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:37,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:37,899 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 22:06:38,099 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 22:06:38,099 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:38,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:38,100 INFO L85 PathProgramCache]: Analyzing trace with hash 808597466, now seen corresponding path program 1 times [2023-12-21 22:06:38,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:38,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833136397] [2023-12-21 22:06:38,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:38,100 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 22:06:38,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:38,101 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 22:06:38,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-21 22:06:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:38,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:38,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:38,224 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 22:06:38,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:38,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:38,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833136397] [2023-12-21 22:06:38,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833136397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:38,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:38,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:38,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568708054] [2023-12-21 22:06:38,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:38,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:38,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:38,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:38,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:38,226 INFO L87 Difference]: Start difference. First operand 6306 states and 9489 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:38,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:38,452 INFO L93 Difference]: Finished difference Result 11749 states and 16818 transitions. [2023-12-21 22:06:38,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:38,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:38,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:38,463 INFO L225 Difference]: With dead ends: 11749 [2023-12-21 22:06:38,463 INFO L226 Difference]: Without dead ends: 7582 [2023-12-21 22:06:38,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 148 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 22:06:38,472 INFO L413 NwaCegarLoop]: 4383 mSDtfsCounter, 83 mSDsluCounter, 8760 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 13143 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:38,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 13143 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:38,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7582 states. [2023-12-21 22:06:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7582 to 6350. [2023-12-21 22:06:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6350 states, 6124 states have (on average 1.5132266492488569) internal successors, (9267), 6128 states have internal predecessors, (9267), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2023-12-21 22:06:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6350 states to 6350 states and 9513 transitions. [2023-12-21 22:06:38,637 INFO L78 Accepts]: Start accepts. Automaton has 6350 states and 9513 transitions. Word has length 151 [2023-12-21 22:06:38,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:38,637 INFO L495 AbstractCegarLoop]: Abstraction has 6350 states and 9513 transitions. [2023-12-21 22:06:38,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:38,637 INFO L276 IsEmpty]: Start isEmpty. Operand 6350 states and 9513 transitions. [2023-12-21 22:06:38,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:38,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:38,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:38,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-21 22:06:38,838 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 22:06:38,839 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:38,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:38,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1609306600, now seen corresponding path program 1 times [2023-12-21 22:06:38,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:38,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420660602] [2023-12-21 22:06:38,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:38,840 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 22:06:38,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:38,841 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 22:06:38,842 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 22:06:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:38,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:38,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:38,977 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 22:06:38,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:38,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:38,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420660602] [2023-12-21 22:06:38,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420660602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:38,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:38,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:38,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576037187] [2023-12-21 22:06:38,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:38,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:38,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:38,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:38,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:38,979 INFO L87 Difference]: Start difference. First operand 6350 states and 9513 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:39,198 INFO L93 Difference]: Finished difference Result 10665 states and 15271 transitions. [2023-12-21 22:06:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:39,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:39,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:39,209 INFO L225 Difference]: With dead ends: 10665 [2023-12-21 22:06:39,210 INFO L226 Difference]: Without dead ends: 6454 [2023-12-21 22:06:39,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 148 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 22:06:39,218 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 74 mSDsluCounter, 8748 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 13128 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:39,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 13128 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6454 states. [2023-12-21 22:06:39,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6454 to 6354. [2023-12-21 22:06:39,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6354 states, 6128 states have (on average 1.506364229765013) internal successors, (9231), 6132 states have internal predecessors, (9231), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2023-12-21 22:06:39,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6354 states to 6354 states and 9477 transitions. [2023-12-21 22:06:39,488 INFO L78 Accepts]: Start accepts. Automaton has 6354 states and 9477 transitions. Word has length 151 [2023-12-21 22:06:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:39,488 INFO L495 AbstractCegarLoop]: Abstraction has 6354 states and 9477 transitions. [2023-12-21 22:06:39,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:39,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6354 states and 9477 transitions. [2023-12-21 22:06:39,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:39,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:39,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:39,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:39,697 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 22:06:39,697 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:39,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:39,698 INFO L85 PathProgramCache]: Analyzing trace with hash 267176218, now seen corresponding path program 1 times [2023-12-21 22:06:39,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:39,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816854812] [2023-12-21 22:06:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:39,698 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 22:06:39,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:39,699 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 22:06:39,725 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 22:06:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:39,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:39,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:39,825 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 22:06:39,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:39,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:39,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816854812] [2023-12-21 22:06:39,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816854812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:39,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:39,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:39,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070882775] [2023-12-21 22:06:39,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:39,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:39,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:39,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:39,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:39,827 INFO L87 Difference]: Start difference. First operand 6354 states and 9477 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:40,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:40,040 INFO L93 Difference]: Finished difference Result 10729 states and 15275 transitions. [2023-12-21 22:06:40,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:40,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:40,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:40,049 INFO L225 Difference]: With dead ends: 10729 [2023-12-21 22:06:40,049 INFO L226 Difference]: Without dead ends: 6514 [2023-12-21 22:06:40,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 148 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 22:06:40,055 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 56 mSDsluCounter, 8750 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 13130 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:40,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 13130 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6514 states. [2023-12-21 22:06:40,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6514 to 6362. [2023-12-21 22:06:40,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6362 states, 6136 states have (on average 1.4995110821382007) internal successors, (9201), 6140 states have internal predecessors, (9201), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2023-12-21 22:06:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 9447 transitions. [2023-12-21 22:06:40,216 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 9447 transitions. Word has length 151 [2023-12-21 22:06:40,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:40,216 INFO L495 AbstractCegarLoop]: Abstraction has 6362 states and 9447 transitions. [2023-12-21 22:06:40,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:40,216 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 9447 transitions. [2023-12-21 22:06:40,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:40,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:40,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:40,224 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 22:06:40,421 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 22:06:40,422 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:40,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:40,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2001280668, now seen corresponding path program 1 times [2023-12-21 22:06:40,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:40,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937943667] [2023-12-21 22:06:40,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:40,423 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 22:06:40,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:40,424 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 22:06:40,425 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 22:06:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:40,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:40,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:40,566 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 22:06:40,567 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:40,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:40,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937943667] [2023-12-21 22:06:40,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937943667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:40,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:40,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:40,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019614083] [2023-12-21 22:06:40,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:40,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:40,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:40,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:40,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:40,568 INFO L87 Difference]: Start difference. First operand 6362 states and 9447 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:40,798 INFO L93 Difference]: Finished difference Result 10721 states and 15183 transitions. [2023-12-21 22:06:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:40,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:40,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:40,808 INFO L225 Difference]: With dead ends: 10721 [2023-12-21 22:06:40,808 INFO L226 Difference]: Without dead ends: 6498 [2023-12-21 22:06:40,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 148 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 22:06:40,815 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 47 mSDsluCounter, 8751 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 13131 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:40,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 13131 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:40,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2023-12-21 22:06:40,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 6370. [2023-12-21 22:06:40,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6370 states, 6144 states have (on average 1.49267578125) internal successors, (9171), 6148 states have internal predecessors, (9171), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2023-12-21 22:06:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6370 states to 6370 states and 9417 transitions. [2023-12-21 22:06:40,980 INFO L78 Accepts]: Start accepts. Automaton has 6370 states and 9417 transitions. Word has length 151 [2023-12-21 22:06:40,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:40,980 INFO L495 AbstractCegarLoop]: Abstraction has 6370 states and 9417 transitions. [2023-12-21 22:06:40,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:40,981 INFO L276 IsEmpty]: Start isEmpty. Operand 6370 states and 9417 transitions. [2023-12-21 22:06:40,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:40,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:40,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:40,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-12-21 22:06:41,187 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 22:06:41,187 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:41,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:41,187 INFO L85 PathProgramCache]: Analyzing trace with hash -385228838, now seen corresponding path program 1 times [2023-12-21 22:06:41,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:41,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029711449] [2023-12-21 22:06:41,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:41,188 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 22:06:41,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:41,189 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 22:06:41,189 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 22:06:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:41,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:41,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:41,315 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 22:06:41,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:41,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:41,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029711449] [2023-12-21 22:06:41,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029711449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:41,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:41,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:41,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587064800] [2023-12-21 22:06:41,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:41,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:41,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:41,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:41,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:41,317 INFO L87 Difference]: Start difference. First operand 6370 states and 9417 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:41,608 INFO L93 Difference]: Finished difference Result 10713 states and 15091 transitions. [2023-12-21 22:06:41,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:41,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:41,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:41,615 INFO L225 Difference]: With dead ends: 10713 [2023-12-21 22:06:41,615 INFO L226 Difference]: Without dead ends: 6482 [2023-12-21 22:06:41,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 148 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 22:06:41,620 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 38 mSDsluCounter, 8752 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 13132 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:41,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 13132 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:41,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2023-12-21 22:06:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 6378. [2023-12-21 22:06:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6378 states, 6152 states have (on average 1.4858582574772432) internal successors, (9141), 6156 states have internal predecessors, (9141), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2023-12-21 22:06:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6378 states to 6378 states and 9387 transitions. [2023-12-21 22:06:41,772 INFO L78 Accepts]: Start accepts. Automaton has 6378 states and 9387 transitions. Word has length 151 [2023-12-21 22:06:41,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:41,772 INFO L495 AbstractCegarLoop]: Abstraction has 6378 states and 9387 transitions. [2023-12-21 22:06:41,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:41,772 INFO L276 IsEmpty]: Start isEmpty. Operand 6378 states and 9387 transitions. [2023-12-21 22:06:41,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:41,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:41,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:41,779 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 22:06:41,977 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 22:06:41,978 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:41,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:41,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2071408676, now seen corresponding path program 1 times [2023-12-21 22:06:41,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:41,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447197680] [2023-12-21 22:06:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:41,979 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 22:06:41,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:41,979 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 22:06:41,980 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 22:06:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:42,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:42,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:42,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:42,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:42,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447197680] [2023-12-21 22:06:42,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447197680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:42,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:42,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:42,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227732454] [2023-12-21 22:06:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:42,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:42,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:42,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:42,113 INFO L87 Difference]: Start difference. First operand 6378 states and 9387 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:42,321 INFO L93 Difference]: Finished difference Result 10705 states and 14999 transitions. [2023-12-21 22:06:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:42,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:42,332 INFO L225 Difference]: With dead ends: 10705 [2023-12-21 22:06:42,332 INFO L226 Difference]: Without dead ends: 6466 [2023-12-21 22:06:42,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 148 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 22:06:42,339 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 29 mSDsluCounter, 8753 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 13133 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:42,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 13133 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:42,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6466 states. [2023-12-21 22:06:42,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6466 to 6386. [2023-12-21 22:06:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6386 states, 6160 states have (on average 1.4790584415584416) internal successors, (9111), 6164 states have internal predecessors, (9111), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2023-12-21 22:06:42,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6386 states to 6386 states and 9357 transitions. [2023-12-21 22:06:42,496 INFO L78 Accepts]: Start accepts. Automaton has 6386 states and 9357 transitions. Word has length 151 [2023-12-21 22:06:42,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:42,496 INFO L495 AbstractCegarLoop]: Abstraction has 6386 states and 9357 transitions. [2023-12-21 22:06:42,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:42,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6386 states and 9357 transitions. [2023-12-21 22:06:42,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:42,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:42,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:42,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-12-21 22:06:42,703 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 22:06:42,703 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:42,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:42,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1869584742, now seen corresponding path program 1 times [2023-12-21 22:06:42,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:42,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587645965] [2023-12-21 22:06:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:42,704 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 22:06:42,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:42,705 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 22:06:42,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-21 22:06:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:42,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:42,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:42,827 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 22:06:42,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:42,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:42,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587645965] [2023-12-21 22:06:42,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587645965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:42,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:42,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482074367] [2023-12-21 22:06:42,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:42,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:42,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:42,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:42,828 INFO L87 Difference]: Start difference. First operand 6386 states and 9357 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:43,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:43,047 INFO L93 Difference]: Finished difference Result 10697 states and 14907 transitions. [2023-12-21 22:06:43,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:43,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:43,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:43,057 INFO L225 Difference]: With dead ends: 10697 [2023-12-21 22:06:43,057 INFO L226 Difference]: Without dead ends: 6450 [2023-12-21 22:06:43,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 148 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 22:06:43,063 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 20 mSDsluCounter, 8754 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 13134 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:43,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 13134 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:43,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6450 states. [2023-12-21 22:06:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6450 to 6394. [2023-12-21 22:06:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6394 states, 6168 states have (on average 1.4722762645914398) internal successors, (9081), 6172 states have internal predecessors, (9081), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2023-12-21 22:06:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6394 states to 6394 states and 9327 transitions. [2023-12-21 22:06:43,303 INFO L78 Accepts]: Start accepts. Automaton has 6394 states and 9327 transitions. Word has length 151 [2023-12-21 22:06:43,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:43,304 INFO L495 AbstractCegarLoop]: Abstraction has 6394 states and 9327 transitions. [2023-12-21 22:06:43,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 6394 states and 9327 transitions. [2023-12-21 22:06:43,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:43,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:43,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:43,312 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 22:06:43,510 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 22:06:43,510 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:43,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:43,511 INFO L85 PathProgramCache]: Analyzing trace with hash -482799332, now seen corresponding path program 1 times [2023-12-21 22:06:43,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:43,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835611188] [2023-12-21 22:06:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:43,511 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 22:06:43,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:43,512 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 22:06:43,513 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 22:06:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:43,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:43,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:43,647 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 22:06:43,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:43,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:43,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835611188] [2023-12-21 22:06:43,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835611188] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:43,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:43,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:43,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793190605] [2023-12-21 22:06:43,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:43,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:43,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:43,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:43,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:43,649 INFO L87 Difference]: Start difference. First operand 6394 states and 9327 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:43,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:43,860 INFO L93 Difference]: Finished difference Result 11069 states and 15316 transitions. [2023-12-21 22:06:43,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:43,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:43,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:43,871 INFO L225 Difference]: With dead ends: 11069 [2023-12-21 22:06:43,871 INFO L226 Difference]: Without dead ends: 6814 [2023-12-21 22:06:43,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 148 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 22:06:43,878 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 11 mSDsluCounter, 8755 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 13135 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:43,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 13135 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:43,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6814 states. [2023-12-21 22:06:44,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6814 to 6478. [2023-12-21 22:06:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6478 states, 6252 states have (on average 1.4659309021113245) internal successors, (9165), 6256 states have internal predecessors, (9165), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2023-12-21 22:06:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6478 states to 6478 states and 9411 transitions. [2023-12-21 22:06:44,038 INFO L78 Accepts]: Start accepts. Automaton has 6478 states and 9411 transitions. Word has length 151 [2023-12-21 22:06:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:44,039 INFO L495 AbstractCegarLoop]: Abstraction has 6478 states and 9411 transitions. [2023-12-21 22:06:44,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 6478 states and 9411 transitions. [2023-12-21 22:06:44,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:44,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:44,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:44,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-12-21 22:06:44,240 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 22:06:44,240 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:44,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:44,241 INFO L85 PathProgramCache]: Analyzing trace with hash -963879590, now seen corresponding path program 1 times [2023-12-21 22:06:44,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:44,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380335139] [2023-12-21 22:06:44,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:44,241 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 22:06:44,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:44,242 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 22:06:44,243 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 22:06:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:44,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:44,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:44,373 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 22:06:44,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:44,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:44,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380335139] [2023-12-21 22:06:44,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380335139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:44,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:44,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:44,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033841674] [2023-12-21 22:06:44,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:44,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:44,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:44,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:44,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:44,374 INFO L87 Difference]: Start difference. First operand 6478 states and 9411 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:44,591 INFO L93 Difference]: Finished difference Result 10833 states and 14947 transitions. [2023-12-21 22:06:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:44,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:44,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:44,601 INFO L225 Difference]: With dead ends: 10833 [2023-12-21 22:06:44,601 INFO L226 Difference]: Without dead ends: 6494 [2023-12-21 22:06:44,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 148 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 22:06:44,606 INFO L413 NwaCegarLoop]: 4380 mSDtfsCounter, 2 mSDsluCounter, 8755 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13135 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:44,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13135 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:44,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2023-12-21 22:06:44,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 6486. [2023-12-21 22:06:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6486 states, 6260 states have (on average 1.45926517571885) internal successors, (9135), 6264 states have internal predecessors, (9135), 122 states have call successors, (122), 100 states have call predecessors, (122), 102 states have return successors, (124), 122 states have call predecessors, (124), 122 states have call successors, (124) [2023-12-21 22:06:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6486 states to 6486 states and 9381 transitions. [2023-12-21 22:06:44,763 INFO L78 Accepts]: Start accepts. Automaton has 6486 states and 9381 transitions. Word has length 151 [2023-12-21 22:06:44,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:44,763 INFO L495 AbstractCegarLoop]: Abstraction has 6486 states and 9381 transitions. [2023-12-21 22:06:44,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 22:06:44,763 INFO L276 IsEmpty]: Start isEmpty. Operand 6486 states and 9381 transitions. [2023-12-21 22:06:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:06:44,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:44,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:44,773 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 (35)] Ended with exit code 0 [2023-12-21 22:06:44,968 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 22:06:44,968 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:44,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:44,969 INFO L85 PathProgramCache]: Analyzing trace with hash -70393252, now seen corresponding path program 1 times [2023-12-21 22:06:44,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:44,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419273217] [2023-12-21 22:06:44,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:44,969 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 22:06:44,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:44,971 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 22:06:45,003 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 22:06:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:45,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:06:45,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:45,289 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 22:06:45,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:45,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:45,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419273217] [2023-12-21 22:06:45,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419273217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:45,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:45,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 22:06:45,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536692331] [2023-12-21 22:06:45,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:45,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:06:45,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:45,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:06:45,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:45,290 INFO L87 Difference]: Start difference. First operand 6486 states and 9381 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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 22:06:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:45,609 INFO L93 Difference]: Finished difference Result 15115 states and 20177 transitions. [2023-12-21 22:06:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:06:45,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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 151 [2023-12-21 22:06:45,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:45,625 INFO L225 Difference]: With dead ends: 15115 [2023-12-21 22:06:45,625 INFO L226 Difference]: Without dead ends: 10768 [2023-12-21 22:06:45,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 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 22:06:45,635 INFO L413 NwaCegarLoop]: 4379 mSDtfsCounter, 4263 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4263 SdHoareTripleChecker+Valid, 4763 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:45,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4263 Valid, 4763 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:45,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10768 states. [2023-12-21 22:06:45,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10768 to 10764. [2023-12-21 22:06:45,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10764 states, 10318 states have (on average 1.3720682302771856) internal successors, (14157), 10328 states have internal predecessors, (14157), 240 states have call successors, (240), 200 states have call predecessors, (240), 204 states have return successors, (244), 236 states have call predecessors, (244), 240 states have call successors, (244) [2023-12-21 22:06:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10764 states to 10764 states and 14641 transitions. [2023-12-21 22:06:45,943 INFO L78 Accepts]: Start accepts. Automaton has 10764 states and 14641 transitions. Word has length 151 [2023-12-21 22:06:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:45,943 INFO L495 AbstractCegarLoop]: Abstraction has 10764 states and 14641 transitions. [2023-12-21 22:06:45,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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 22:06:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 10764 states and 14641 transitions. [2023-12-21 22:06:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-21 22:06:45,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:45,949 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:45,968 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 22:06:46,154 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 22:06:46,154 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:46,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:46,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1682252824, now seen corresponding path program 1 times [2023-12-21 22:06:46,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:46,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532553157] [2023-12-21 22:06:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:46,155 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 22:06:46,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:46,156 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 22:06:46,158 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 22:06:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:46,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:06:46,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-21 22:06:46,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:46,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:46,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532553157] [2023-12-21 22:06:46,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532553157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:46,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:46,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:46,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652854739] [2023-12-21 22:06:46,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:46,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:46,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:46,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:46,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:46,549 INFO L87 Difference]: Start difference. First operand 10764 states and 14641 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 22:06:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:47,500 INFO L93 Difference]: Finished difference Result 28422 states and 36405 transitions. [2023-12-21 22:06:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:47,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 243 [2023-12-21 22:06:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:47,532 INFO L225 Difference]: With dead ends: 28422 [2023-12-21 22:06:47,532 INFO L226 Difference]: Without dead ends: 19798 [2023-12-21 22:06:47,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 241 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 22:06:47,547 INFO L413 NwaCegarLoop]: 4474 mSDtfsCounter, 4582 mSDsluCounter, 4658 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4586 SdHoareTripleChecker+Valid, 9132 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:47,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4586 Valid, 9132 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:06:47,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19798 states. [2023-12-21 22:06:48,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19798 to 19796. [2023-12-21 22:06:48,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19796 states, 18899 states have (on average 1.3082702788507328) internal successors, (24725), 18926 states have internal predecessors, (24725), 471 states have call successors, (471), 400 states have call predecessors, (471), 424 states have return successors, (519), 471 states have call predecessors, (519), 471 states have call successors, (519) [2023-12-21 22:06:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19796 states to 19796 states and 25715 transitions. [2023-12-21 22:06:48,248 INFO L78 Accepts]: Start accepts. Automaton has 19796 states and 25715 transitions. Word has length 243 [2023-12-21 22:06:48,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:48,248 INFO L495 AbstractCegarLoop]: Abstraction has 19796 states and 25715 transitions. [2023-12-21 22:06:48,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 22:06:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 19796 states and 25715 transitions. [2023-12-21 22:06:48,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-21 22:06:48,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:48,258 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:48,265 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 22:06:48,462 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 22:06:48,463 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:48,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:48,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1917526362, now seen corresponding path program 1 times [2023-12-21 22:06:48,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:48,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432936626] [2023-12-21 22:06:48,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:48,464 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 22:06:48,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:48,465 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 22:06:48,471 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 22:06:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:48,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:06:48,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:48,636 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-21 22:06:48,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:48,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:48,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432936626] [2023-12-21 22:06:48,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432936626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:48,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:48,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:06:48,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612257583] [2023-12-21 22:06:48,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:48,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:06:48,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:48,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:06:48,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:48,639 INFO L87 Difference]: Start difference. First operand 19796 states and 25715 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 22:06:49,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:49,281 INFO L93 Difference]: Finished difference Result 37438 states and 47412 transitions. [2023-12-21 22:06:49,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:06:49,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 243 [2023-12-21 22:06:49,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:49,306 INFO L225 Difference]: With dead ends: 37438 [2023-12-21 22:06:49,306 INFO L226 Difference]: Without dead ends: 19782 [2023-12-21 22:06:49,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 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 22:06:49,319 INFO L413 NwaCegarLoop]: 4379 mSDtfsCounter, 457 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 8336 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:49,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 8336 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:06:49,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19782 states. [2023-12-21 22:06:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19782 to 19782. [2023-12-21 22:06:49,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19782 states, 18888 states have (on average 1.3079203727234223) internal successors, (24704), 18914 states have internal predecessors, (24704), 468 states have call successors, (468), 400 states have call predecessors, (468), 424 states have return successors, (516), 468 states have call predecessors, (516), 468 states have call successors, (516) [2023-12-21 22:06:49,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19782 states to 19782 states and 25688 transitions. [2023-12-21 22:06:49,905 INFO L78 Accepts]: Start accepts. Automaton has 19782 states and 25688 transitions. Word has length 243 [2023-12-21 22:06:49,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:49,905 INFO L495 AbstractCegarLoop]: Abstraction has 19782 states and 25688 transitions. [2023-12-21 22:06:49,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 22:06:49,906 INFO L276 IsEmpty]: Start isEmpty. Operand 19782 states and 25688 transitions. [2023-12-21 22:06:49,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-21 22:06:49,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:49,915 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:49,921 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 22:06:50,120 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 22:06:50,120 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:50,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:50,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1501168387, now seen corresponding path program 1 times [2023-12-21 22:06:50,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:50,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481006229] [2023-12-21 22:06:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:50,122 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 22:06:50,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:50,122 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 22:06:50,123 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 22:06:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:50,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:06:50,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-21 22:06:50,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:50,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:50,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481006229] [2023-12-21 22:06:50,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481006229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:50,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:50,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:50,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446546817] [2023-12-21 22:06:50,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:50,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:50,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:50,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:50,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:50,505 INFO L87 Difference]: Start difference. First operand 19782 states and 25688 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 22:06:52,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:52,078 INFO L93 Difference]: Finished difference Result 59915 states and 74978 transitions. [2023-12-21 22:06:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:52,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 245 [2023-12-21 22:06:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:52,141 INFO L225 Difference]: With dead ends: 59915 [2023-12-21 22:06:52,141 INFO L226 Difference]: Without dead ends: 42273 [2023-12-21 22:06:52,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 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 22:06:52,162 INFO L413 NwaCegarLoop]: 4459 mSDtfsCounter, 4601 mSDsluCounter, 4652 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4606 SdHoareTripleChecker+Valid, 9111 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:52,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4606 Valid, 9111 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42273 states. [2023-12-21 22:06:53,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42273 to 41759. [2023-12-21 22:06:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41759 states, 39838 states have (on average 1.2667804608665094) internal successors, (50466), 39973 states have internal predecessors, (50466), 919 states have call successors, (919), 784 states have call predecessors, (919), 1000 states have return successors, (1223), 1003 states have call predecessors, (1223), 919 states have call successors, (1223) [2023-12-21 22:06:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41759 states to 41759 states and 52608 transitions. [2023-12-21 22:06:53,635 INFO L78 Accepts]: Start accepts. Automaton has 41759 states and 52608 transitions. Word has length 245 [2023-12-21 22:06:53,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:53,635 INFO L495 AbstractCegarLoop]: Abstraction has 41759 states and 52608 transitions. [2023-12-21 22:06:53,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 22:06:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand 41759 states and 52608 transitions. [2023-12-21 22:06:53,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-21 22:06:53,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:53,652 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:53,659 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 22:06:53,857 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 22:06:53,857 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:53,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:53,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1497343995, now seen corresponding path program 1 times [2023-12-21 22:06:53,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:53,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536407564] [2023-12-21 22:06:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:53,858 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 22:06:53,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:53,859 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 22:06:53,861 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 22:06:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:54,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:06:54,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:54,030 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-21 22:06:54,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:54,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:54,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536407564] [2023-12-21 22:06:54,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536407564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:54,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:54,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:06:54,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062311152] [2023-12-21 22:06:54,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:54,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:06:54,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:54,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:06:54,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:54,032 INFO L87 Difference]: Start difference. First operand 41759 states and 52608 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 22:06:55,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:55,113 INFO L93 Difference]: Finished difference Result 73045 states and 91057 transitions. [2023-12-21 22:06:55,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:06:55,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 245 [2023-12-21 22:06:55,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:55,162 INFO L225 Difference]: With dead ends: 73045 [2023-12-21 22:06:55,162 INFO L226 Difference]: Without dead ends: 33426 [2023-12-21 22:06:55,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 243 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 22:06:55,186 INFO L413 NwaCegarLoop]: 4378 mSDtfsCounter, 455 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 8335 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:55,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 8335 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:06:55,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33426 states. [2023-12-21 22:06:56,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33426 to 33426. [2023-12-21 22:06:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33426 states, 31936 states have (on average 1.2771480460921845) internal successors, (40787), 32058 states have internal predecessors, (40787), 692 states have call successors, (692), 592 states have call predecessors, (692), 796 states have return successors, (960), 776 states have call predecessors, (960), 692 states have call successors, (960) [2023-12-21 22:06:56,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33426 states to 33426 states and 42439 transitions. [2023-12-21 22:06:56,425 INFO L78 Accepts]: Start accepts. Automaton has 33426 states and 42439 transitions. Word has length 245 [2023-12-21 22:06:56,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:56,426 INFO L495 AbstractCegarLoop]: Abstraction has 33426 states and 42439 transitions. [2023-12-21 22:06:56,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 22:06:56,426 INFO L276 IsEmpty]: Start isEmpty. Operand 33426 states and 42439 transitions. [2023-12-21 22:06:56,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-21 22:06:56,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:56,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:56,443 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 (40)] Ended with exit code 0 [2023-12-21 22:06:56,639 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 22:06:56,639 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:56,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:56,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1578554072, now seen corresponding path program 1 times [2023-12-21 22:06:56,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:56,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947353343] [2023-12-21 22:06:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:56,640 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 22:06:56,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:56,641 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 22:06:56,642 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 22:06:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:56,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:06:56,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-21 22:06:57,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:57,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:57,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947353343] [2023-12-21 22:06:57,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947353343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:57,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:57,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:57,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039974588] [2023-12-21 22:06:57,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:57,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:57,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:57,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:57,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:57,025 INFO L87 Difference]: Start difference. First operand 33426 states and 42439 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 22:06:59,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:59,379 INFO L93 Difference]: Finished difference Result 93854 states and 116711 transitions. [2023-12-21 22:06:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:59,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 247 [2023-12-21 22:06:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:59,474 INFO L225 Difference]: With dead ends: 93854 [2023-12-21 22:06:59,474 INFO L226 Difference]: Without dead ends: 62568 [2023-12-21 22:06:59,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 245 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 22:06:59,498 INFO L413 NwaCegarLoop]: 4448 mSDtfsCounter, 4565 mSDsluCounter, 4621 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4571 SdHoareTripleChecker+Valid, 9069 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:59,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4571 Valid, 9069 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:59,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62568 states. [2023-12-21 22:07:01,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62568 to 62566. [2023-12-21 22:07:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62566 states, 59685 states have (on average 1.2566473988439306) internal successors, (75003), 59928 states have internal predecessors, (75003), 1335 states have call successors, (1335), 1136 states have call predecessors, (1335), 1544 states have return successors, (1883), 1503 states have call predecessors, (1883), 1335 states have call successors, (1883) [2023-12-21 22:07:01,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62566 states to 62566 states and 78221 transitions. [2023-12-21 22:07:01,733 INFO L78 Accepts]: Start accepts. Automaton has 62566 states and 78221 transitions. Word has length 247 [2023-12-21 22:07:01,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:07:01,734 INFO L495 AbstractCegarLoop]: Abstraction has 62566 states and 78221 transitions. [2023-12-21 22:07:01,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 22:07:01,734 INFO L276 IsEmpty]: Start isEmpty. Operand 62566 states and 78221 transitions. [2023-12-21 22:07:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-21 22:07:01,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:07:01,756 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:01,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-12-21 22:07:01,956 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 22:07:01,957 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:07:01,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:07:01,957 INFO L85 PathProgramCache]: Analyzing trace with hash -43157402, now seen corresponding path program 1 times [2023-12-21 22:07:01,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:07:01,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864235701] [2023-12-21 22:07:01,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:07:01,958 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 22:07:01,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:07:01,958 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 22:07:01,959 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 22:07:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:07:02,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:07:02,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:07:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-21 22:07:02,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:07:02,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:07:02,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864235701] [2023-12-21 22:07:02,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864235701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:07:02,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:07:02,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:07:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444014955] [2023-12-21 22:07:02,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:07:02,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:07:02,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:07:02,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:07:02,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:07:02,122 INFO L87 Difference]: Start difference. First operand 62566 states and 78221 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 22:07:04,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:07:04,353 INFO L93 Difference]: Finished difference Result 122980 states and 152430 transitions. [2023-12-21 22:07:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:07:04,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 247 [2023-12-21 22:07:04,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:07:04,474 INFO L225 Difference]: With dead ends: 122980 [2023-12-21 22:07:04,475 INFO L226 Difference]: Without dead ends: 62554 [2023-12-21 22:07:04,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 245 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 22:07:04,533 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 453 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 8334 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:07:04,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 8334 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:07:04,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62554 states. [2023-12-21 22:07:06,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62554 to 62554. [2023-12-21 22:07:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62554 states, 59676 states have (on average 1.2565520477243783) internal successors, (74986), 59918 states have internal predecessors, (74986), 1332 states have call successors, (1332), 1136 states have call predecessors, (1332), 1544 states have return successors, (1880), 1500 states have call predecessors, (1880), 1332 states have call successors, (1880) [2023-12-21 22:07:06,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62554 states to 62554 states and 78198 transitions. [2023-12-21 22:07:06,769 INFO L78 Accepts]: Start accepts. Automaton has 62554 states and 78198 transitions. Word has length 247 [2023-12-21 22:07:06,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:07:06,770 INFO L495 AbstractCegarLoop]: Abstraction has 62554 states and 78198 transitions. [2023-12-21 22:07:06,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 22:07:06,770 INFO L276 IsEmpty]: Start isEmpty. Operand 62554 states and 78198 transitions. [2023-12-21 22:07:06,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-21 22:07:06,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:07:06,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:06,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-12-21 22:07:06,989 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 22:07:06,989 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:07:06,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:07:06,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1129241853, now seen corresponding path program 1 times [2023-12-21 22:07:06,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:07:06,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124293848] [2023-12-21 22:07:06,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:07:06,990 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:07:06,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:07:06,991 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 22:07:06,996 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 22:07:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:07:07,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:07:07,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:07:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-21 22:07:07,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:07:07,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:07:07,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124293848] [2023-12-21 22:07:07,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124293848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:07:07,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:07:07,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:07:07,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616812844] [2023-12-21 22:07:07,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:07:07,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:07:07,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:07:07,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:07:07,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:07:07,355 INFO L87 Difference]: Start difference. First operand 62554 states and 78198 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 22:07:11,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:07:11,547 INFO L93 Difference]: Finished difference Result 210861 states and 259765 transitions. [2023-12-21 22:07:11,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:07:11,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 249 [2023-12-21 22:07:11,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:07:11,783 INFO L225 Difference]: With dead ends: 210861 [2023-12-21 22:07:11,783 INFO L226 Difference]: Without dead ends: 150447 [2023-12-21 22:07:11,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 247 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 22:07:11,837 INFO L413 NwaCegarLoop]: 4453 mSDtfsCounter, 4574 mSDsluCounter, 4616 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4580 SdHoareTripleChecker+Valid, 9069 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:07:11,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4580 Valid, 9069 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:07:11,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150447 states. [2023-12-21 22:07:16,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150447 to 147149. [2023-12-21 22:07:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147149 states, 140420 states have (on average 1.2387978920381713) internal successors, (173952), 141487 states have internal predecessors, (173952), 2567 states have call successors, (2567), 2176 states have call predecessors, (2567), 4160 states have return successors, (4972), 3487 states have call predecessors, (4972), 2567 states have call successors, (4972) [2023-12-21 22:07:16,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147149 states to 147149 states and 181491 transitions. [2023-12-21 22:07:16,705 INFO L78 Accepts]: Start accepts. Automaton has 147149 states and 181491 transitions. Word has length 249 [2023-12-21 22:07:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:07:16,705 INFO L495 AbstractCegarLoop]: Abstraction has 147149 states and 181491 transitions. [2023-12-21 22:07:16,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 22:07:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand 147149 states and 181491 transitions. [2023-12-21 22:07:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-21 22:07:16,751 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:07:16,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:16,756 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 22:07:16,956 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 22:07:16,956 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:07:16,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:07:16,957 INFO L85 PathProgramCache]: Analyzing trace with hash -776585339, now seen corresponding path program 1 times [2023-12-21 22:07:16,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:07:16,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200732981] [2023-12-21 22:07:16,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:07:16,957 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 22:07:16,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:07:16,958 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 22:07:16,959 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 22:07:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:07:17,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:07:17,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:07:17,117 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-21 22:07:17,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:07:17,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:07:17,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200732981] [2023-12-21 22:07:17,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200732981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:07:17,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:07:17,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:07:17,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702492323] [2023-12-21 22:07:17,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:07:17,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:07:17,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:07:17,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:07:17,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:07:17,122 INFO L87 Difference]: Start difference. First operand 147149 states and 181491 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 22:07:21,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:07:21,291 INFO L93 Difference]: Finished difference Result 292148 states and 358974 transitions. [2023-12-21 22:07:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:07:21,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 249 [2023-12-21 22:07:21,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:07:21,683 INFO L225 Difference]: With dead ends: 292148 [2023-12-21 22:07:21,683 INFO L226 Difference]: Without dead ends: 147138 [2023-12-21 22:07:21,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 247 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 22:07:21,769 INFO L413 NwaCegarLoop]: 4376 mSDtfsCounter, 451 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 8333 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:07:21,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 8333 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:07:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147138 states. [2023-12-21 22:07:25,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147138 to 147138. [2023-12-21 22:07:26,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147138 states, 140412 states have (on average 1.2387616443039056) internal successors, (173937), 141478 states have internal predecessors, (173937), 2564 states have call successors, (2564), 2176 states have call predecessors, (2564), 4160 states have return successors, (4968), 3484 states have call predecessors, (4968), 2564 states have call successors, (4968) [2023-12-21 22:07:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147138 states to 147138 states and 181469 transitions. [2023-12-21 22:07:26,323 INFO L78 Accepts]: Start accepts. Automaton has 147138 states and 181469 transitions. Word has length 249 [2023-12-21 22:07:26,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:07:26,323 INFO L495 AbstractCegarLoop]: Abstraction has 147138 states and 181469 transitions. [2023-12-21 22:07:26,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 22:07:26,324 INFO L276 IsEmpty]: Start isEmpty. Operand 147138 states and 181469 transitions. [2023-12-21 22:07:26,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-21 22:07:26,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:07:26,371 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:26,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2023-12-21 22:07:26,571 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 22:07:26,571 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:07:26,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:07:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash 497112680, now seen corresponding path program 1 times [2023-12-21 22:07:26,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:07:26,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445929753] [2023-12-21 22:07:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:07:26,572 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 22:07:26,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:07:26,573 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 22:07:26,574 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 22:07:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:07:26,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:07:26,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:07:26,923 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-21 22:07:26,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:07:26,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:07:26,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445929753] [2023-12-21 22:07:26,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445929753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:07:26,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:07:26,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:07:26,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716468670] [2023-12-21 22:07:26,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:07:26,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:07:26,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:07:26,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:07:26,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:07:26,925 INFO L87 Difference]: Start difference. First operand 147138 states and 181469 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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 22:07:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:07:34,792 INFO L93 Difference]: Finished difference Result 426128 states and 522825 transitions. [2023-12-21 22:07:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:07:34,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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 251 [2023-12-21 22:07:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:07:35,449 INFO L225 Difference]: With dead ends: 426128 [2023-12-21 22:07:35,449 INFO L226 Difference]: Without dead ends: 281130 [2023-12-21 22:07:35,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 249 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 22:07:35,545 INFO L413 NwaCegarLoop]: 4416 mSDtfsCounter, 4553 mSDsluCounter, 4585 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4559 SdHoareTripleChecker+Valid, 9001 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:07:35,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4559 Valid, 9001 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:07:35,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281130 states. [2023-12-21 22:07:43,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281130 to 281128. [2023-12-21 22:07:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281128 states, 268127 states have (on average 1.233016443700187) internal successors, (330605), 270226 states have internal predecessors, (330605), 4935 states have call successors, (4935), 4160 states have call predecessors, (4935), 8064 states have return successors, (9691), 6743 states have call predecessors, (9691), 4935 states have call successors, (9691) [2023-12-21 22:07:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281128 states to 281128 states and 345231 transitions. [2023-12-21 22:07:44,646 INFO L78 Accepts]: Start accepts. Automaton has 281128 states and 345231 transitions. Word has length 251 [2023-12-21 22:07:44,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:07:44,646 INFO L495 AbstractCegarLoop]: Abstraction has 281128 states and 345231 transitions. [2023-12-21 22:07:44,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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 22:07:44,646 INFO L276 IsEmpty]: Start isEmpty. Operand 281128 states and 345231 transitions. [2023-12-21 22:07:44,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-21 22:07:44,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:07:44,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:44,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2023-12-21 22:07:44,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:07:44,931 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:07:44,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:07:44,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1455437274, now seen corresponding path program 1 times [2023-12-21 22:07:44,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:07:44,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062273269] [2023-12-21 22:07:44,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:07:44,932 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 22:07:44,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:07:44,934 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:07:44,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-12-21 22:07:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:07:45,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:07:45,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:07:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-21 22:07:45,087 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:07:45,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:07:45,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062273269] [2023-12-21 22:07:45,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062273269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:07:45,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:07:45,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:07:45,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086728537] [2023-12-21 22:07:45,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:07:45,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:07:45,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:07:45,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:07:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:07:45,089 INFO L87 Difference]: Start difference. First operand 281128 states and 345231 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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)