/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.05.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 22:04:04,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 22:04:04,421 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 22:04:04,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 22:04:04,426 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 22:04:04,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 22:04:04,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 22:04:04,444 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 22:04:04,445 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 22:04:04,445 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 22:04:04,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 22:04:04,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 22:04:04,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 22:04:04,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 22:04:04,447 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 22:04:04,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 22:04:04,447 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 22:04:04,448 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 22:04:04,448 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 22:04:04,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 22:04:04,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 22:04:04,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 22:04:04,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 22:04:04,450 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 22:04:04,450 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 22:04:04,450 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 22:04:04,451 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 22:04:04,451 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 22:04:04,451 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 22:04:04,452 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 22:04:04,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 22:04:04,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 22:04:04,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 22:04:04,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 22:04:04,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 22:04:04,454 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 22:04:04,454 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 22:04:04,454 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 22:04:04,454 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 22:04:04,455 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 22:04:04,455 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 22:04:04,455 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 22:04:04,456 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 22:04:04,456 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 22:04:04,456 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 22:04:04,456 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 22:04:04,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 22:04:04,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 22:04:04,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 22:04:04,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 22:04:04,663 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 22:04:04,664 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 22:04:04,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.05.cil-1.c [2023-12-21 22:04:05,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 22:04:06,431 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 22:04:06,431 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.05.cil-1.c [2023-12-21 22:04:06,488 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9beb749d/014b5baba57e44d99b08f56eb1fac670/FLAG303eb501f [2023-12-21 22:04:06,505 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9beb749d/014b5baba57e44d99b08f56eb1fac670 [2023-12-21 22:04:06,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 22:04:06,510 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 22:04:06,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 22:04:06,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 22:04:06,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 22:04:06,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:04:06" (1/1) ... [2023-12-21 22:04:06,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec49c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:06, skipping insertion in model container [2023-12-21 22:04:06,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:04:06" (1/1) ... [2023-12-21 22:04:06,739 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 22:04:08,371 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.05.cil-1.c[382357,382370] [2023-12-21 22:04:08,395 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.05.cil-1.c[383339,383352] [2023-12-21 22:04:08,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 22:04:08,584 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 22:04:09,390 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.05.cil-1.c[382357,382370] [2023-12-21 22:04:09,394 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.05.cil-1.c[383339,383352] [2023-12-21 22:04:09,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 22:04:09,475 INFO L206 MainTranslator]: Completed translation [2023-12-21 22:04:09,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09 WrapperNode [2023-12-21 22:04:09,477 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 22:04:09,478 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 22:04:09,478 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 22:04:09,478 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 22:04:09,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09" (1/1) ... [2023-12-21 22:04:09,567 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09" (1/1) ... [2023-12-21 22:04:10,039 INFO L138 Inliner]: procedures = 55, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12785 [2023-12-21 22:04:10,040 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 22:04:10,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 22:04:10,041 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 22:04:10,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 22:04:10,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09" (1/1) ... [2023-12-21 22:04:10,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09" (1/1) ... [2023-12-21 22:04:10,152 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09" (1/1) ... [2023-12-21 22:04:10,232 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 22:04:10,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09" (1/1) ... [2023-12-21 22:04:10,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09" (1/1) ... [2023-12-21 22:04:10,345 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09" (1/1) ... [2023-12-21 22:04:10,391 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09" (1/1) ... [2023-12-21 22:04:10,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09" (1/1) ... [2023-12-21 22:04:10,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09" (1/1) ... [2023-12-21 22:04:10,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 22:04:10,562 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 22:04:10,562 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 22:04:10,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 22:04:10,563 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09" (1/1) ... [2023-12-21 22:04:10,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 22:04:10,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 22:04:10,666 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 22:04:10,691 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 22:04:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 22:04:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 22:04:10,698 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 22:04:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 22:04:10,698 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 22:04:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 22:04:10,698 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 22:04:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 22:04:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 22:04:10,699 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 22:04:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 22:04:10,699 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 22:04:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 22:04:10,699 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 22:04:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 22:04:10,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 22:04:10,833 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 22:04:10,835 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 22:04:19,778 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 22:04:19,874 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 22:04:19,875 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-12-21 22:04:19,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:04:19 BoogieIcfgContainer [2023-12-21 22:04:19,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 22:04:19,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 22:04:19,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 22:04:19,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 22:04:19,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:04:06" (1/3) ... [2023-12-21 22:04:19,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49197999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:04:19, skipping insertion in model container [2023-12-21 22:04:19,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:04:09" (2/3) ... [2023-12-21 22:04:19,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49197999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:04:19, skipping insertion in model container [2023-12-21 22:04:19,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:04:19" (3/3) ... [2023-12-21 22:04:19,883 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.05.cil-1.c [2023-12-21 22:04:19,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 22:04:19,899 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 22:04:19,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 22:04:19,993 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;@491a4de5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 22:04:19,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 22:04:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-21 22:04:20,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:20,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:20,033 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] [2023-12-21 22:04:20,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:20,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:20,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1867406071, now seen corresponding path program 1 times [2023-12-21 22:04:20,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:20,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100735525] [2023-12-21 22:04:20,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:20,054 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 22:04:20,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:20,060 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 22:04:20,087 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 22:04:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:20,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:04:20,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:20,293 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 22:04:20,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:20,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:20,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100735525] [2023-12-21 22:04:20,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100735525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:20,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:20,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:04:20,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702018417] [2023-12-21 22:04:20,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:20,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:04:20,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:20,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:04:20,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:04:20,338 INFO L87 Difference]: Start difference. First operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 22:04:20,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:20,552 INFO L93 Difference]: Finished difference Result 4614 states and 8655 transitions. [2023-12-21 22:04:20,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:04:20,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:20,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:20,582 INFO L225 Difference]: With dead ends: 4614 [2023-12-21 22:04:20,583 INFO L226 Difference]: Without dead ends: 2306 [2023-12-21 22:04:20,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 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 22:04:20,599 INFO L413 NwaCegarLoop]: 4227 mSDtfsCounter, 285 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 8186 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:20,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 8186 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:04:20,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2023-12-21 22:04:20,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2306. [2023-12-21 22:04:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2279 states have (on average 1.8473014480035104) internal successors, (4210), 2281 states have internal predecessors, (4210), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-21 22:04:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 4248 transitions. [2023-12-21 22:04:20,751 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 4248 transitions. Word has length 91 [2023-12-21 22:04:20,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:20,752 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 4248 transitions. [2023-12-21 22:04:20,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 22:04:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 4248 transitions. [2023-12-21 22:04:20,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:20,755 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:20,755 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] [2023-12-21 22:04:20,768 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 22:04:20,960 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 22:04:20,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:20,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash 300648121, now seen corresponding path program 1 times [2023-12-21 22:04:20,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:20,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304013580] [2023-12-21 22:04:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:20,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:04:20,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:20,967 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 22:04:20,970 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 22:04:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:21,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:21,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:21,171 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 22:04:21,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:21,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:21,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304013580] [2023-12-21 22:04:21,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304013580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:21,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:21,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:21,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017307491] [2023-12-21 22:04:21,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:21,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:04:21,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:21,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:04:21,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:04:21,176 INFO L87 Difference]: Start difference. First operand 2306 states and 4248 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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 22:04:21,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:21,729 INFO L93 Difference]: Finished difference Result 2675 states and 4835 transitions. [2023-12-21 22:04:21,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 22:04:21,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:21,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:21,743 INFO L225 Difference]: With dead ends: 2675 [2023-12-21 22:04:21,743 INFO L226 Difference]: Without dead ends: 2501 [2023-12-21 22:04:21,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 22:04:21,747 INFO L413 NwaCegarLoop]: 4167 mSDtfsCounter, 4483 mSDsluCounter, 8431 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4496 SdHoareTripleChecker+Valid, 12598 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:21,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4496 Valid, 12598 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:04:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2501 states. [2023-12-21 22:04:21,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2501 to 2486. [2023-12-21 22:04:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.8314191960623463) internal successors, (4465), 2441 states have internal predecessors, (4465), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-12-21 22:04:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4532 transitions. [2023-12-21 22:04:21,814 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4532 transitions. Word has length 91 [2023-12-21 22:04:21,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:21,814 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4532 transitions. [2023-12-21 22:04:21,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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 22:04:21,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4532 transitions. [2023-12-21 22:04:21,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:21,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:21,816 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] [2023-12-21 22:04:21,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-21 22:04:22,023 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 22:04:22,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:22,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:22,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1713917117, now seen corresponding path program 1 times [2023-12-21 22:04:22,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:22,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071060579] [2023-12-21 22:04:22,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:22,026 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 22:04:22,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:22,027 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 22:04:22,035 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 22:04:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:22,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:22,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:22,199 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 22:04:22,199 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:22,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:22,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071060579] [2023-12-21 22:04:22,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071060579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:22,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:22,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:22,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800513048] [2023-12-21 22:04:22,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:22,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:04:22,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:22,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:04:22,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:04:22,202 INFO L87 Difference]: Start difference. First operand 2486 states and 4532 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:22,555 INFO L93 Difference]: Finished difference Result 2840 states and 5095 transitions. [2023-12-21 22:04:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:04:22,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:22,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:22,569 INFO L225 Difference]: With dead ends: 2840 [2023-12-21 22:04:22,569 INFO L226 Difference]: Without dead ends: 2486 [2023-12-21 22:04:22,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 22:04:22,572 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 4331 mSDsluCounter, 8188 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4344 SdHoareTripleChecker+Valid, 12323 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:22,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4344 Valid, 12323 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:04:22,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2023-12-21 22:04:22,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2023-12-21 22:04:22,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.8285479901558654) internal successors, (4458), 2441 states have internal predecessors, (4458), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-12-21 22:04:22,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4525 transitions. [2023-12-21 22:04:22,666 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4525 transitions. Word has length 91 [2023-12-21 22:04:22,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:22,667 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4525 transitions. [2023-12-21 22:04:22,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:22,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4525 transitions. [2023-12-21 22:04:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:22,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:22,670 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] [2023-12-21 22:04:22,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 22:04:22,875 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 22:04:22,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:22,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:22,876 INFO L85 PathProgramCache]: Analyzing trace with hash -872892871, now seen corresponding path program 1 times [2023-12-21 22:04:22,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:22,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710521197] [2023-12-21 22:04:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:22,877 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 22:04:22,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:22,878 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 22:04:22,911 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 (5)] Waiting until timeout for monitored process [2023-12-21 22:04:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:22,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:22,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:23,042 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 22:04:23,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:23,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:23,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710521197] [2023-12-21 22:04:23,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710521197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:23,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:23,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:23,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86050901] [2023-12-21 22:04:23,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:23,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:04:23,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:23,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:04:23,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:04:23,046 INFO L87 Difference]: Start difference. First operand 2486 states and 4525 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:23,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:23,375 INFO L93 Difference]: Finished difference Result 2840 states and 5081 transitions. [2023-12-21 22:04:23,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:04:23,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:23,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:23,386 INFO L225 Difference]: With dead ends: 2840 [2023-12-21 22:04:23,386 INFO L226 Difference]: Without dead ends: 2486 [2023-12-21 22:04:23,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 22:04:23,389 INFO L413 NwaCegarLoop]: 4132 mSDtfsCounter, 4324 mSDsluCounter, 8184 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4337 SdHoareTripleChecker+Valid, 12316 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:23,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4337 Valid, 12316 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 22:04:23,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2023-12-21 22:04:23,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2023-12-21 22:04:23,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.8256767842493848) internal successors, (4451), 2441 states have internal predecessors, (4451), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-12-21 22:04:23,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4518 transitions. [2023-12-21 22:04:23,455 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4518 transitions. Word has length 91 [2023-12-21 22:04:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:23,456 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4518 transitions. [2023-12-21 22:04:23,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:23,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4518 transitions. [2023-12-21 22:04:23,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:23,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:23,457 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] [2023-12-21 22:04:23,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-21 22:04:23,664 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 22:04:23,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:23,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:23,665 INFO L85 PathProgramCache]: Analyzing trace with hash 76369589, now seen corresponding path program 1 times [2023-12-21 22:04:23,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:23,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953805819] [2023-12-21 22:04:23,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:23,666 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 22:04:23,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:23,667 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 22:04:23,668 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 22:04:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:23,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:23,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:23,831 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 22:04:23,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:23,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:23,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953805819] [2023-12-21 22:04:23,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953805819] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:23,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:23,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:23,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448605596] [2023-12-21 22:04:23,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:23,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:04:23,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:23,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:04:23,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:04:23,835 INFO L87 Difference]: Start difference. First operand 2486 states and 4518 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:24,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:24,291 INFO L93 Difference]: Finished difference Result 2840 states and 5067 transitions. [2023-12-21 22:04:24,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:04:24,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:24,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:24,304 INFO L225 Difference]: With dead ends: 2840 [2023-12-21 22:04:24,306 INFO L226 Difference]: Without dead ends: 2486 [2023-12-21 22:04:24,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 22:04:24,314 INFO L413 NwaCegarLoop]: 4129 mSDtfsCounter, 4318 mSDsluCounter, 8180 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4331 SdHoareTripleChecker+Valid, 12309 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:24,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4331 Valid, 12309 Invalid, 301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:04:24,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2023-12-21 22:04:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2023-12-21 22:04:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.822805578342904) internal successors, (4444), 2441 states have internal predecessors, (4444), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-12-21 22:04:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4511 transitions. [2023-12-21 22:04:24,391 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4511 transitions. Word has length 91 [2023-12-21 22:04:24,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:24,392 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4511 transitions. [2023-12-21 22:04:24,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:24,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4511 transitions. [2023-12-21 22:04:24,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:24,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:24,394 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] [2023-12-21 22:04:24,402 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 22:04:24,599 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 22:04:24,599 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:24,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:24,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1694124359, now seen corresponding path program 1 times [2023-12-21 22:04:24,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:24,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690055881] [2023-12-21 22:04:24,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:24,601 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 22:04:24,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:24,602 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 22:04:24,638 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 22:04:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:24,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:24,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:04:24,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:24,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:24,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690055881] [2023-12-21 22:04:24,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690055881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:24,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:24,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:24,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534662342] [2023-12-21 22:04:24,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:24,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:04:24,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:24,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:04:24,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:04:24,771 INFO L87 Difference]: Start difference. First operand 2486 states and 4511 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:25,125 INFO L93 Difference]: Finished difference Result 2840 states and 5053 transitions. [2023-12-21 22:04:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:04:25,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:25,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:25,137 INFO L225 Difference]: With dead ends: 2840 [2023-12-21 22:04:25,137 INFO L226 Difference]: Without dead ends: 2486 [2023-12-21 22:04:25,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 22:04:25,143 INFO L413 NwaCegarLoop]: 4126 mSDtfsCounter, 4312 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4325 SdHoareTripleChecker+Valid, 12302 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:25,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4325 Valid, 12302 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:04:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2023-12-21 22:04:25,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2023-12-21 22:04:25,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.8199343724364232) internal successors, (4437), 2441 states have internal predecessors, (4437), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-12-21 22:04:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4504 transitions. [2023-12-21 22:04:25,226 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4504 transitions. Word has length 91 [2023-12-21 22:04:25,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:25,226 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4504 transitions. [2023-12-21 22:04:25,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4504 transitions. [2023-12-21 22:04:25,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:25,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:25,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:04:25,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-21 22:04:25,433 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 22:04:25,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:25,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:25,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1751237067, now seen corresponding path program 1 times [2023-12-21 22:04:25,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:25,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659003303] [2023-12-21 22:04:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:25,436 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 22:04:25,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:25,438 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 22:04:25,472 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 22:04:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:25,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:25,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:25,601 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 22:04:25,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:25,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:25,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659003303] [2023-12-21 22:04:25,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659003303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:25,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:25,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:25,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656428941] [2023-12-21 22:04:25,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:25,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:04:25,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:25,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:04:25,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:04:25,604 INFO L87 Difference]: Start difference. First operand 2486 states and 4504 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:26,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:26,006 INFO L93 Difference]: Finished difference Result 2922 states and 5171 transitions. [2023-12-21 22:04:26,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:04:26,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:26,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:26,018 INFO L225 Difference]: With dead ends: 2922 [2023-12-21 22:04:26,018 INFO L226 Difference]: Without dead ends: 2568 [2023-12-21 22:04:26,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 22:04:26,021 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 4357 mSDsluCounter, 8172 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4370 SdHoareTripleChecker+Valid, 12296 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:26,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4370 Valid, 12296 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:04:26,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2023-12-21 22:04:26,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2568. [2023-12-21 22:04:26,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2568 states, 2514 states have (on average 1.8058870326173428) internal successors, (4540), 2517 states have internal predecessors, (4540), 35 states have call successors, (35), 16 states have call predecessors, (35), 17 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2023-12-21 22:04:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 4611 transitions. [2023-12-21 22:04:26,114 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 4611 transitions. Word has length 91 [2023-12-21 22:04:26,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:26,114 INFO L495 AbstractCegarLoop]: Abstraction has 2568 states and 4611 transitions. [2023-12-21 22:04:26,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:26,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 4611 transitions. [2023-12-21 22:04:26,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:26,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:26,116 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] [2023-12-21 22:04:26,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 22:04:26,316 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 22:04:26,317 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:26,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:26,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1690055560, now seen corresponding path program 1 times [2023-12-21 22:04:26,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:26,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879717293] [2023-12-21 22:04:26,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:26,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:04:26,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:26,320 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 22:04:26,340 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 22:04:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:26,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:26,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:26,478 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 22:04:26,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:26,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:26,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879717293] [2023-12-21 22:04:26,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879717293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:26,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:26,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674156118] [2023-12-21 22:04:26,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:26,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:04:26,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:04:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:04:26,481 INFO L87 Difference]: Start difference. First operand 2568 states and 4611 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:26,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:26,907 INFO L93 Difference]: Finished difference Result 3086 states and 5385 transitions. [2023-12-21 22:04:26,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:04:26,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:26,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:26,919 INFO L225 Difference]: With dead ends: 3086 [2023-12-21 22:04:26,919 INFO L226 Difference]: Without dead ends: 2650 [2023-12-21 22:04:26,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 22:04:26,923 INFO L413 NwaCegarLoop]: 4121 mSDtfsCounter, 4350 mSDsluCounter, 8168 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4363 SdHoareTripleChecker+Valid, 12289 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:26,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4363 Valid, 12289 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:04:26,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2023-12-21 22:04:27,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2650. [2023-12-21 22:04:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2590 states have (on average 1.7911196911196912) internal successors, (4639), 2593 states have internal predecessors, (4639), 37 states have call successors, (37), 20 states have call predecessors, (37), 21 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2023-12-21 22:04:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 4714 transitions. [2023-12-21 22:04:27,011 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 4714 transitions. Word has length 91 [2023-12-21 22:04:27,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:27,012 INFO L495 AbstractCegarLoop]: Abstraction has 2650 states and 4714 transitions. [2023-12-21 22:04:27,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:27,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 4714 transitions. [2023-12-21 22:04:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:27,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:27,013 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] [2023-12-21 22:04:27,021 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 22:04:27,218 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 22:04:27,218 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:27,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:27,219 INFO L85 PathProgramCache]: Analyzing trace with hash 437256948, now seen corresponding path program 1 times [2023-12-21 22:04:27,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:27,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913011880] [2023-12-21 22:04:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:27,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:04:27,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:27,221 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 22:04:27,224 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 22:04:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:27,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:27,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:04:27,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:27,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:27,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913011880] [2023-12-21 22:04:27,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913011880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:27,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:27,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:27,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749821764] [2023-12-21 22:04:27,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:27,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:04:27,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:27,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:04:27,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:04:27,364 INFO L87 Difference]: Start difference. First operand 2650 states and 4714 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:27,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:27,787 INFO L93 Difference]: Finished difference Result 3250 states and 5591 transitions. [2023-12-21 22:04:27,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:04:27,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:27,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:27,809 INFO L225 Difference]: With dead ends: 3250 [2023-12-21 22:04:27,809 INFO L226 Difference]: Without dead ends: 2732 [2023-12-21 22:04:27,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 22:04:27,813 INFO L413 NwaCegarLoop]: 4118 mSDtfsCounter, 4344 mSDsluCounter, 8164 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4357 SdHoareTripleChecker+Valid, 12282 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:27,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4357 Valid, 12282 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:04:27,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2023-12-21 22:04:27,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2732. [2023-12-21 22:04:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2666 states have (on average 1.7756939234808702) internal successors, (4734), 2669 states have internal predecessors, (4734), 39 states have call successors, (39), 24 states have call predecessors, (39), 25 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-12-21 22:04:27,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 4813 transitions. [2023-12-21 22:04:27,897 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 4813 transitions. Word has length 91 [2023-12-21 22:04:27,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:27,897 INFO L495 AbstractCegarLoop]: Abstraction has 2732 states and 4813 transitions. [2023-12-21 22:04:27,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:27,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 4813 transitions. [2023-12-21 22:04:27,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:27,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:27,899 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] [2023-12-21 22:04:27,906 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 22:04:28,103 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 22:04:28,104 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:28,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:28,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1733508615, now seen corresponding path program 1 times [2023-12-21 22:04:28,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:28,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201306674] [2023-12-21 22:04:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:28,110 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 22:04:28,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:28,111 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 22:04:28,120 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 22:04:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:28,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:28,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:28,257 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 22:04:28,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:28,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:28,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201306674] [2023-12-21 22:04:28,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201306674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:28,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:28,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:28,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928745512] [2023-12-21 22:04:28,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:28,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:04:28,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:28,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:04:28,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:04:28,259 INFO L87 Difference]: Start difference. First operand 2732 states and 4813 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:28,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:28,737 INFO L93 Difference]: Finished difference Result 3414 states and 5789 transitions. [2023-12-21 22:04:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:04:28,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:28,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:28,749 INFO L225 Difference]: With dead ends: 3414 [2023-12-21 22:04:28,749 INFO L226 Difference]: Without dead ends: 2814 [2023-12-21 22:04:28,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 22:04:28,752 INFO L413 NwaCegarLoop]: 4115 mSDtfsCounter, 4337 mSDsluCounter, 8160 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4350 SdHoareTripleChecker+Valid, 12275 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:28,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4350 Valid, 12275 Invalid, 360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:04:28,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2023-12-21 22:04:28,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2814. [2023-12-21 22:04:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2742 states have (on average 1.7596644784828592) internal successors, (4825), 2745 states have internal predecessors, (4825), 41 states have call successors, (41), 28 states have call predecessors, (41), 29 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2023-12-21 22:04:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4908 transitions. [2023-12-21 22:04:28,821 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4908 transitions. Word has length 91 [2023-12-21 22:04:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:28,822 INFO L495 AbstractCegarLoop]: Abstraction has 2814 states and 4908 transitions. [2023-12-21 22:04:28,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:28,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4908 transitions. [2023-12-21 22:04:28,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:28,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:28,823 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] [2023-12-21 22:04:28,831 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 22:04:29,027 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 22:04:29,028 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:29,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:29,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1389745620, now seen corresponding path program 1 times [2023-12-21 22:04:29,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:29,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980756965] [2023-12-21 22:04:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:29,029 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 22:04:29,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:29,030 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 22:04:29,031 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 22:04:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:29,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:29,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:29,176 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 22:04:29,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:29,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:29,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980756965] [2023-12-21 22:04:29,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980756965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:29,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:29,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:29,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415514869] [2023-12-21 22:04:29,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:29,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:04:29,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:29,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:04:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:04:29,178 INFO L87 Difference]: Start difference. First operand 2814 states and 4908 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:29,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:29,556 INFO L93 Difference]: Finished difference Result 3578 states and 5979 transitions. [2023-12-21 22:04:29,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:04:29,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:29,564 INFO L225 Difference]: With dead ends: 3578 [2023-12-21 22:04:29,564 INFO L226 Difference]: Without dead ends: 2896 [2023-12-21 22:04:29,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 22:04:29,567 INFO L413 NwaCegarLoop]: 4112 mSDtfsCounter, 4329 mSDsluCounter, 8156 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4342 SdHoareTripleChecker+Valid, 12268 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:29,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4342 Valid, 12268 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:04:29,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2023-12-21 22:04:29,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 2896. [2023-12-21 22:04:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2818 states have (on average 1.7430801987224982) internal successors, (4912), 2821 states have internal predecessors, (4912), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 22:04:29,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 4999 transitions. [2023-12-21 22:04:29,640 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 4999 transitions. Word has length 91 [2023-12-21 22:04:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:29,641 INFO L495 AbstractCegarLoop]: Abstraction has 2896 states and 4999 transitions. [2023-12-21 22:04:29,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 4999 transitions. [2023-12-21 22:04:29,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:29,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:29,642 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] [2023-12-21 22:04:29,650 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 22:04:29,847 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 22:04:29,847 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:29,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:29,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1193784175, now seen corresponding path program 1 times [2023-12-21 22:04:29,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:29,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843909108] [2023-12-21 22:04:29,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:29,848 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 22:04:29,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:29,849 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 22:04:29,850 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 22:04:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:29,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:29,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:29,946 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 22:04:29,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:29,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:29,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843909108] [2023-12-21 22:04:29,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843909108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:29,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:29,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968984533] [2023-12-21 22:04:29,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:29,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:04:29,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:04:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:04:29,948 INFO L87 Difference]: Start difference. First operand 2896 states and 4999 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:30,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:30,095 INFO L93 Difference]: Finished difference Result 3727 states and 6140 transitions. [2023-12-21 22:04:30,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:04:30,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:30,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:30,104 INFO L225 Difference]: With dead ends: 3727 [2023-12-21 22:04:30,104 INFO L226 Difference]: Without dead ends: 2964 [2023-12-21 22:04:30,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 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 22:04:30,106 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 47 mSDsluCounter, 8385 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 12582 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:30,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 12582 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:04:30,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2023-12-21 22:04:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2900. [2023-12-21 22:04:30,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 2822 states have (on average 1.738483345145287) internal successors, (4906), 2825 states have internal predecessors, (4906), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 22:04:30,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 4993 transitions. [2023-12-21 22:04:30,179 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 4993 transitions. Word has length 91 [2023-12-21 22:04:30,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:30,179 INFO L495 AbstractCegarLoop]: Abstraction has 2900 states and 4993 transitions. [2023-12-21 22:04:30,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:30,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 4993 transitions. [2023-12-21 22:04:30,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:30,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:30,180 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] [2023-12-21 22:04:30,188 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 22:04:30,384 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 22:04:30,385 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:30,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:30,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1627513261, now seen corresponding path program 1 times [2023-12-21 22:04:30,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:30,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058268798] [2023-12-21 22:04:30,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:30,386 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 22:04:30,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:30,387 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 22:04:30,394 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 22:04:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:30,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:30,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:30,476 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 22:04:30,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:30,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:30,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058268798] [2023-12-21 22:04:30,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058268798] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:30,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:30,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:30,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66967106] [2023-12-21 22:04:30,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:30,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:04:30,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:30,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:04:30,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:04:30,478 INFO L87 Difference]: Start difference. First operand 2900 states and 4993 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:30,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:30,602 INFO L93 Difference]: Finished difference Result 3723 states and 6112 transitions. [2023-12-21 22:04:30,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:04:30,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:30,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:30,608 INFO L225 Difference]: With dead ends: 3723 [2023-12-21 22:04:30,608 INFO L226 Difference]: Without dead ends: 2956 [2023-12-21 22:04:30,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 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 22:04:30,611 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 38 mSDsluCounter, 8386 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 12583 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:30,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 12583 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:04:30,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2023-12-21 22:04:30,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2904. [2023-12-21 22:04:30,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2904 states, 2826 states have (on average 1.7338995046001415) internal successors, (4900), 2829 states have internal predecessors, (4900), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 22:04:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 4987 transitions. [2023-12-21 22:04:30,673 INFO L78 Accepts]: Start accepts. Automaton has 2904 states and 4987 transitions. Word has length 91 [2023-12-21 22:04:30,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:30,674 INFO L495 AbstractCegarLoop]: Abstraction has 2904 states and 4987 transitions. [2023-12-21 22:04:30,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:30,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2904 states and 4987 transitions. [2023-12-21 22:04:30,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:30,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:30,675 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] [2023-12-21 22:04:30,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 22:04:30,880 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 22:04:30,880 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:30,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2071413935, now seen corresponding path program 1 times [2023-12-21 22:04:30,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:30,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803609666] [2023-12-21 22:04:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:30,881 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 22:04:30,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:30,882 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 22:04:30,915 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 22:04:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:30,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:30,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:30,993 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 22:04:30,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:30,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:30,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803609666] [2023-12-21 22:04:30,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803609666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:30,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:30,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:30,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810697261] [2023-12-21 22:04:30,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:30,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:04:30,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:30,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:04:30,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:04:30,995 INFO L87 Difference]: Start difference. First operand 2904 states and 4987 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:31,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:31,124 INFO L93 Difference]: Finished difference Result 3719 states and 6084 transitions. [2023-12-21 22:04:31,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:04:31,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:31,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:31,130 INFO L225 Difference]: With dead ends: 3719 [2023-12-21 22:04:31,130 INFO L226 Difference]: Without dead ends: 2948 [2023-12-21 22:04:31,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 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 22:04:31,132 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 29 mSDsluCounter, 8387 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12584 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:31,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12584 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:04:31,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2023-12-21 22:04:31,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2908. [2023-12-21 22:04:31,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2830 states have (on average 1.7293286219081272) internal successors, (4894), 2833 states have internal predecessors, (4894), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 22:04:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 4981 transitions. [2023-12-21 22:04:31,197 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 4981 transitions. Word has length 91 [2023-12-21 22:04:31,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:31,198 INFO L495 AbstractCegarLoop]: Abstraction has 2908 states and 4981 transitions. [2023-12-21 22:04:31,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:31,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 4981 transitions. [2023-12-21 22:04:31,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:31,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:31,199 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] [2023-12-21 22:04:31,207 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 22:04:31,403 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 22:04:31,404 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:31,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash -284391315, now seen corresponding path program 1 times [2023-12-21 22:04:31,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:31,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854049333] [2023-12-21 22:04:31,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:31,405 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 22:04:31,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:31,406 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 22:04:31,432 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 22:04:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:31,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:31,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:31,519 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 22:04:31,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:31,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:31,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854049333] [2023-12-21 22:04:31,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854049333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:31,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:31,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:31,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063518662] [2023-12-21 22:04:31,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:31,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:04:31,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:31,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:04:31,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:04:31,521 INFO L87 Difference]: Start difference. First operand 2908 states and 4981 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:31,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:31,645 INFO L93 Difference]: Finished difference Result 3715 states and 6056 transitions. [2023-12-21 22:04:31,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:04:31,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:31,651 INFO L225 Difference]: With dead ends: 3715 [2023-12-21 22:04:31,652 INFO L226 Difference]: Without dead ends: 2940 [2023-12-21 22:04:31,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 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 22:04:31,655 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 20 mSDsluCounter, 8388 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 12585 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:31,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 12585 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:04:31,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2023-12-21 22:04:31,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2912. [2023-12-21 22:04:31,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 2834 states have (on average 1.724770642201835) internal successors, (4888), 2837 states have internal predecessors, (4888), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 22:04:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 4975 transitions. [2023-12-21 22:04:31,802 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 4975 transitions. Word has length 91 [2023-12-21 22:04:31,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:31,802 INFO L495 AbstractCegarLoop]: Abstraction has 2912 states and 4975 transitions. [2023-12-21 22:04:31,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 4975 transitions. [2023-12-21 22:04:31,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:31,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:31,803 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] [2023-12-21 22:04:31,811 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 22:04:32,008 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 22:04:32,008 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:32,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:32,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1181784593, now seen corresponding path program 1 times [2023-12-21 22:04:32,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:32,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304768737] [2023-12-21 22:04:32,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:32,009 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 22:04:32,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:32,011 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 22:04:32,042 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 22:04:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:32,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:04:32,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:32,121 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 22:04:32,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:32,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:32,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304768737] [2023-12-21 22:04:32,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304768737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:32,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:32,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:32,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111710445] [2023-12-21 22:04:32,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:32,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:04:32,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:32,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:04:32,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:04:32,123 INFO L87 Difference]: Start difference. First operand 2912 states and 4975 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:32,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:32,245 INFO L93 Difference]: Finished difference Result 3699 states and 6010 transitions. [2023-12-21 22:04:32,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:04:32,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:32,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:32,252 INFO L225 Difference]: With dead ends: 3699 [2023-12-21 22:04:32,252 INFO L226 Difference]: Without dead ends: 2920 [2023-12-21 22:04:32,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 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 22:04:32,254 INFO L413 NwaCegarLoop]: 4197 mSDtfsCounter, 2 mSDsluCounter, 8389 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12586 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:32,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12586 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:04:32,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2023-12-21 22:04:32,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2916. [2023-12-21 22:04:32,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2838 states have (on average 1.7202255109231854) internal successors, (4882), 2841 states have internal predecessors, (4882), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 22:04:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4969 transitions. [2023-12-21 22:04:32,317 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4969 transitions. Word has length 91 [2023-12-21 22:04:32,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:32,318 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 4969 transitions. [2023-12-21 22:04:32,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 22:04:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4969 transitions. [2023-12-21 22:04:32,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:32,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:32,319 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] [2023-12-21 22:04:32,323 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 22:04:32,523 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 22:04:32,524 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:32,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:32,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1254171151, now seen corresponding path program 1 times [2023-12-21 22:04:32,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:32,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550369253] [2023-12-21 22:04:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:32,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:04:32,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:32,525 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 22:04:32,526 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 22:04:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:32,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 22:04:32,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:32,717 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 22:04:32,717 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:32,718 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:32,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550369253] [2023-12-21 22:04:32,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550369253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:32,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:32,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:32,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104060875] [2023-12-21 22:04:32,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:32,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:04:32,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:32,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:04:32,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:04:32,719 INFO L87 Difference]: Start difference. First operand 2916 states and 4969 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:04:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:33,008 INFO L93 Difference]: Finished difference Result 3700 states and 5969 transitions. [2023-12-21 22:04:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:04:33,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 22:04:33,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:33,014 INFO L225 Difference]: With dead ends: 3700 [2023-12-21 22:04:33,014 INFO L226 Difference]: Without dead ends: 2916 [2023-12-21 22:04:33,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 22:04:33,017 INFO L413 NwaCegarLoop]: 4108 mSDtfsCounter, 4240 mSDsluCounter, 8152 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4252 SdHoareTripleChecker+Valid, 12260 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:33,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4252 Valid, 12260 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 22:04:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2023-12-21 22:04:33,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2916. [2023-12-21 22:04:33,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2838 states have (on average 1.7177589852008457) internal successors, (4875), 2841 states have internal predecessors, (4875), 43 states have call successors, (43), 32 states have call predecessors, (43), 33 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 22:04:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4962 transitions. [2023-12-21 22:04:33,079 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4962 transitions. Word has length 91 [2023-12-21 22:04:33,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:33,080 INFO L495 AbstractCegarLoop]: Abstraction has 2916 states and 4962 transitions. [2023-12-21 22:04:33,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:04:33,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4962 transitions. [2023-12-21 22:04:33,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:33,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:33,081 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] [2023-12-21 22:04:33,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-21 22:04:33,285 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 22:04:33,286 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:33,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:33,287 INFO L85 PathProgramCache]: Analyzing trace with hash 669056883, now seen corresponding path program 1 times [2023-12-21 22:04:33,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:33,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136672932] [2023-12-21 22:04:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:33,287 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 22:04:33,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:33,289 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 22:04:33,291 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 22:04:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:33,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 22:04:33,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:33,479 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 22:04:33,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:33,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:33,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136672932] [2023-12-21 22:04:33,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136672932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:33,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:33,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:33,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458614567] [2023-12-21 22:04:33,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:33,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:04:33,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:33,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:04:33,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:04:33,481 INFO L87 Difference]: Start difference. First operand 2916 states and 4962 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:04:33,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:33,818 INFO L93 Difference]: Finished difference Result 3800 states and 6097 transitions. [2023-12-21 22:04:33,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 22:04:33,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2023-12-21 22:04:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:33,827 INFO L225 Difference]: With dead ends: 3800 [2023-12-21 22:04:33,827 INFO L226 Difference]: Without dead ends: 3016 [2023-12-21 22:04:33,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 22:04:33,830 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 4281 mSDsluCounter, 8148 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4293 SdHoareTripleChecker+Valid, 12255 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:33,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4293 Valid, 12255 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:04:33,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2023-12-21 22:04:33,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 2992. [2023-12-21 22:04:33,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2992 states, 2912 states have (on average 1.698489010989011) internal successors, (4946), 2915 states have internal predecessors, (4946), 43 states have call successors, (43), 34 states have call predecessors, (43), 35 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2023-12-21 22:04:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 5033 transitions. [2023-12-21 22:04:33,901 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 5033 transitions. Word has length 91 [2023-12-21 22:04:33,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:33,901 INFO L495 AbstractCegarLoop]: Abstraction has 2992 states and 5033 transitions. [2023-12-21 22:04:33,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:04:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 5033 transitions. [2023-12-21 22:04:33,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 22:04:33,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:33,903 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] [2023-12-21 22:04:33,911 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 22:04:34,107 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 22:04:34,108 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:34,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:34,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1019886859, now seen corresponding path program 1 times [2023-12-21 22:04:34,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:34,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785833751] [2023-12-21 22:04:34,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:34,109 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 22:04:34,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:34,110 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 22:04:34,145 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 22:04:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:34,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:04:34,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:34,305 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 22:04:34,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:34,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:34,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785833751] [2023-12-21 22:04:34,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785833751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:34,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:34,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 22:04:34,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035704977] [2023-12-21 22:04:34,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:34,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:04:34,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:34,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:04:34,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:04:34,307 INFO L87 Difference]: Start difference. First operand 2992 states and 5033 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 22:04:34,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:34,417 INFO L93 Difference]: Finished difference Result 4683 states and 7136 transitions. [2023-12-21 22:04:34,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:04:34,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 91 [2023-12-21 22:04:34,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:34,424 INFO L225 Difference]: With dead ends: 4683 [2023-12-21 22:04:34,424 INFO L226 Difference]: Without dead ends: 3824 [2023-12-21 22:04:34,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 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 22:04:34,428 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4116 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4116 SdHoareTripleChecker+Valid, 4435 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:34,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4116 Valid, 4435 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:04:34,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3824 states. [2023-12-21 22:04:34,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3824 to 3822. [2023-12-21 22:04:34,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3822 states, 3668 states have (on average 1.6000545256270446) internal successors, (5869), 3674 states have internal predecessors, (5869), 82 states have call successors, (82), 68 states have call predecessors, (82), 70 states have return successors, (84), 80 states have call predecessors, (84), 82 states have call successors, (84) [2023-12-21 22:04:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3822 states to 3822 states and 6035 transitions. [2023-12-21 22:04:34,540 INFO L78 Accepts]: Start accepts. Automaton has 3822 states and 6035 transitions. Word has length 91 [2023-12-21 22:04:34,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:34,540 INFO L495 AbstractCegarLoop]: Abstraction has 3822 states and 6035 transitions. [2023-12-21 22:04:34,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 22:04:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3822 states and 6035 transitions. [2023-12-21 22:04:34,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 22:04:34,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:34,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:34,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-21 22:04:34,747 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 22:04:34,747 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:34,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:34,747 INFO L85 PathProgramCache]: Analyzing trace with hash 144725427, now seen corresponding path program 1 times [2023-12-21 22:04:34,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:34,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44318082] [2023-12-21 22:04:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:34,748 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 22:04:34,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:34,750 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 22:04:34,779 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 22:04:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:34,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:04:34,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 22:04:35,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:35,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:35,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44318082] [2023-12-21 22:04:35,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44318082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:35,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:35,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:35,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107916737] [2023-12-21 22:04:35,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:35,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:04:35,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:35,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:04:35,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:04:35,022 INFO L87 Difference]: Start difference. First operand 3822 states and 6035 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 22:04:35,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:35,455 INFO L93 Difference]: Finished difference Result 7104 states and 10039 transitions. [2023-12-21 22:04:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:04:35,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 147 [2023-12-21 22:04:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:35,465 INFO L225 Difference]: With dead ends: 7104 [2023-12-21 22:04:35,466 INFO L226 Difference]: Without dead ends: 5416 [2023-12-21 22:04:35,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 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 22:04:35,469 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 4267 mSDsluCounter, 4315 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4271 SdHoareTripleChecker+Valid, 8547 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:35,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4271 Valid, 8547 Invalid, 286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 22:04:35,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5416 states. [2023-12-21 22:04:35,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5416 to 5414. [2023-12-21 22:04:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5117 states have (on average 1.4909126441274183) internal successors, (7629), 5132 states have internal predecessors, (7629), 155 states have call successors, (155), 128 states have call predecessors, (155), 140 states have return successors, (179), 155 states have call predecessors, (179), 155 states have call successors, (179) [2023-12-21 22:04:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 7963 transitions. [2023-12-21 22:04:35,652 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 7963 transitions. Word has length 147 [2023-12-21 22:04:35,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:35,652 INFO L495 AbstractCegarLoop]: Abstraction has 5414 states and 7963 transitions. [2023-12-21 22:04:35,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 22:04:35,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 7963 transitions. [2023-12-21 22:04:35,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 22:04:35,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:35,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:35,668 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 22:04:35,868 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 22:04:35,868 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:35,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:35,869 INFO L85 PathProgramCache]: Analyzing trace with hash 555335793, now seen corresponding path program 1 times [2023-12-21 22:04:35,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:35,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617726681] [2023-12-21 22:04:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:35,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:04:35,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:35,871 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 22:04:35,871 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 22:04:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:35,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:04:35,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 22:04:35,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:35,993 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617726681] [2023-12-21 22:04:35,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617726681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:35,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:35,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:04:35,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561376282] [2023-12-21 22:04:35,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:35,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:04:35,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:35,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:04:35,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:04:35,995 INFO L87 Difference]: Start difference. First operand 5414 states and 7963 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 22:04:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:36,169 INFO L93 Difference]: Finished difference Result 8686 states and 11932 transitions. [2023-12-21 22:04:36,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:04:36,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 147 [2023-12-21 22:04:36,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:36,178 INFO L225 Difference]: With dead ends: 8686 [2023-12-21 22:04:36,178 INFO L226 Difference]: Without dead ends: 5406 [2023-12-21 22:04:36,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 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 22:04:36,184 INFO L413 NwaCegarLoop]: 4190 mSDtfsCounter, 250 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 8147 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:36,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 8147 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:04:36,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2023-12-21 22:04:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 5406. [2023-12-21 22:04:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5112 states have (on average 1.4906103286384977) internal successors, (7620), 5126 states have internal predecessors, (7620), 152 states have call successors, (152), 128 states have call predecessors, (152), 140 states have return successors, (176), 152 states have call predecessors, (176), 152 states have call successors, (176) [2023-12-21 22:04:36,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 7948 transitions. [2023-12-21 22:04:36,374 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 7948 transitions. Word has length 147 [2023-12-21 22:04:36,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:36,374 INFO L495 AbstractCegarLoop]: Abstraction has 5406 states and 7948 transitions. [2023-12-21 22:04:36,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 22:04:36,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 7948 transitions. [2023-12-21 22:04:36,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 22:04:36,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:36,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:36,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-21 22:04:36,583 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 22:04:36,583 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:36,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:36,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1707325298, now seen corresponding path program 1 times [2023-12-21 22:04:36,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:36,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283808550] [2023-12-21 22:04:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:36,584 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 22:04:36,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:36,585 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 22:04:36,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-21 22:04:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:36,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:04:36,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 22:04:36,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:36,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:36,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283808550] [2023-12-21 22:04:36,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283808550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:36,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:36,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:36,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752769732] [2023-12-21 22:04:36,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:36,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:04:36,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:36,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:04:36,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:04:36,852 INFO L87 Difference]: Start difference. First operand 5406 states and 7948 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 22:04:37,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:37,366 INFO L93 Difference]: Finished difference Result 11637 states and 15514 transitions. [2023-12-21 22:04:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:04:37,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 149 [2023-12-21 22:04:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:37,378 INFO L225 Difference]: With dead ends: 11637 [2023-12-21 22:04:37,379 INFO L226 Difference]: Without dead ends: 8365 [2023-12-21 22:04:37,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 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 22:04:37,384 INFO L413 NwaCegarLoop]: 4215 mSDtfsCounter, 4262 mSDsluCounter, 4297 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4267 SdHoareTripleChecker+Valid, 8512 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:37,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4267 Valid, 8512 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 22:04:37,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8365 states. [2023-12-21 22:04:37,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8365 to 8363. [2023-12-21 22:04:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8363 states, 7802 states have (on average 1.3942578825942067) internal successors, (10878), 7833 states have internal predecessors, (10878), 287 states have call successors, (287), 240 states have call predecessors, (287), 272 states have return successors, (355), 291 states have call predecessors, (355), 287 states have call successors, (355) [2023-12-21 22:04:37,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8363 states to 8363 states and 11520 transitions. [2023-12-21 22:04:37,703 INFO L78 Accepts]: Start accepts. Automaton has 8363 states and 11520 transitions. Word has length 149 [2023-12-21 22:04:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:37,704 INFO L495 AbstractCegarLoop]: Abstraction has 8363 states and 11520 transitions. [2023-12-21 22:04:37,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 22:04:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 8363 states and 11520 transitions. [2023-12-21 22:04:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 22:04:37,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:37,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:37,715 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 22:04:37,915 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 22:04:37,915 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:37,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:37,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1863305840, now seen corresponding path program 1 times [2023-12-21 22:04:37,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:37,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404385170] [2023-12-21 22:04:37,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:37,916 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 22:04:37,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:37,917 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 22:04:37,946 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 (24)] Waiting until timeout for monitored process [2023-12-21 22:04:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:38,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:04:38,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 22:04:38,043 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:38,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:38,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404385170] [2023-12-21 22:04:38,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404385170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:38,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:38,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:04:38,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255830706] [2023-12-21 22:04:38,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:38,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:04:38,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:38,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:04:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:04:38,045 INFO L87 Difference]: Start difference. First operand 8363 states and 11520 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 22:04:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:38,447 INFO L93 Difference]: Finished difference Result 14585 states and 19049 transitions. [2023-12-21 22:04:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:04:38,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 149 [2023-12-21 22:04:38,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:38,460 INFO L225 Difference]: With dead ends: 14585 [2023-12-21 22:04:38,460 INFO L226 Difference]: Without dead ends: 8356 [2023-12-21 22:04:38,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 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 22:04:38,469 INFO L413 NwaCegarLoop]: 4189 mSDtfsCounter, 248 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 8146 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:38,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 8146 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:04:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8356 states. [2023-12-21 22:04:38,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8356 to 8356. [2023-12-21 22:04:38,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8356 states, 7798 states have (on average 1.3940754039497307) internal successors, (10871), 7828 states have internal predecessors, (10871), 284 states have call successors, (284), 240 states have call predecessors, (284), 272 states have return successors, (352), 288 states have call predecessors, (352), 284 states have call successors, (352) [2023-12-21 22:04:38,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8356 states to 8356 states and 11507 transitions. [2023-12-21 22:04:38,811 INFO L78 Accepts]: Start accepts. Automaton has 8356 states and 11507 transitions. Word has length 149 [2023-12-21 22:04:38,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:38,811 INFO L495 AbstractCegarLoop]: Abstraction has 8356 states and 11507 transitions. [2023-12-21 22:04:38,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 22:04:38,811 INFO L276 IsEmpty]: Start isEmpty. Operand 8356 states and 11507 transitions. [2023-12-21 22:04:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 22:04:38,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:38,817 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:38,824 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 22:04:39,021 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 22:04:39,021 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:39,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:39,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1003950605, now seen corresponding path program 1 times [2023-12-21 22:04:39,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:39,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156931955] [2023-12-21 22:04:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:39,022 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 22:04:39,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:39,023 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 22:04:39,024 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 22:04:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:39,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:04:39,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:39,302 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 22:04:39,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:39,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:39,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156931955] [2023-12-21 22:04:39,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156931955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:39,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:39,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:39,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005105855] [2023-12-21 22:04:39,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:39,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:04:39,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:39,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:04:39,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:04:39,304 INFO L87 Difference]: Start difference. First operand 8356 states and 11507 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 22:04:40,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:40,108 INFO L93 Difference]: Finished difference Result 20160 states and 25797 transitions. [2023-12-21 22:04:40,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:04:40,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 151 [2023-12-21 22:04:40,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:40,133 INFO L225 Difference]: With dead ends: 20160 [2023-12-21 22:04:40,133 INFO L226 Difference]: Without dead ends: 13938 [2023-12-21 22:04:40,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 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 22:04:40,145 INFO L413 NwaCegarLoop]: 4129 mSDtfsCounter, 4267 mSDsluCounter, 4222 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4273 SdHoareTripleChecker+Valid, 8351 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:40,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4273 Valid, 8351 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 22:04:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13938 states. [2023-12-21 22:04:40,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13938 to 13936. [2023-12-21 22:04:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13936 states, 12874 states have (on average 1.3210346434674538) internal successors, (17007), 12940 states have internal predecessors, (17007), 532 states have call successors, (532), 448 states have call predecessors, (532), 528 states have return successors, (696), 548 states have call predecessors, (696), 532 states have call successors, (696) [2023-12-21 22:04:40,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13936 states to 13936 states and 18235 transitions. [2023-12-21 22:04:40,862 INFO L78 Accepts]: Start accepts. Automaton has 13936 states and 18235 transitions. Word has length 151 [2023-12-21 22:04:40,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:40,862 INFO L495 AbstractCegarLoop]: Abstraction has 13936 states and 18235 transitions. [2023-12-21 22:04:40,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 22:04:40,863 INFO L276 IsEmpty]: Start isEmpty. Operand 13936 states and 18235 transitions. [2023-12-21 22:04:40,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 22:04:40,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:40,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:40,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-21 22:04:41,076 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 22:04:41,076 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:41,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:41,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1232732274, now seen corresponding path program 1 times [2023-12-21 22:04:41,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:41,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390296874] [2023-12-21 22:04:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:41,078 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 22:04:41,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:41,080 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 22:04:41,112 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 22:04:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:41,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:04:41,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:41,371 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 22:04:41,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:41,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:41,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390296874] [2023-12-21 22:04:41,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390296874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:41,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:41,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:41,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016796918] [2023-12-21 22:04:41,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:41,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:04:41,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:41,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:04:41,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:04:41,373 INFO L87 Difference]: Start difference. First operand 13936 states and 18235 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 22:04:42,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:42,609 INFO L93 Difference]: Finished difference Result 38101 states and 47255 transitions. [2023-12-21 22:04:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:04:42,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 153 [2023-12-21 22:04:42,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:42,675 INFO L225 Difference]: With dead ends: 38101 [2023-12-21 22:04:42,675 INFO L226 Difference]: Without dead ends: 26299 [2023-12-21 22:04:42,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 151 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 22:04:42,695 INFO L413 NwaCegarLoop]: 4195 mSDtfsCounter, 4258 mSDsluCounter, 4265 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 8460 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:42,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4264 Valid, 8460 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 22:04:42,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26299 states. [2023-12-21 22:04:43,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26299 to 25849. [2023-12-21 22:04:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25849 states, 23536 states have (on average 1.2631713120326309) internal successors, (29730), 23843 states have internal predecessors, (29730), 999 states have call successors, (999), 832 states have call predecessors, (999), 1312 states have return successors, (1676), 1175 states have call predecessors, (1676), 999 states have call successors, (1676) [2023-12-21 22:04:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25849 states to 25849 states and 32405 transitions. [2023-12-21 22:04:43,943 INFO L78 Accepts]: Start accepts. Automaton has 25849 states and 32405 transitions. Word has length 153 [2023-12-21 22:04:43,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:43,944 INFO L495 AbstractCegarLoop]: Abstraction has 25849 states and 32405 transitions. [2023-12-21 22:04:43,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 22:04:43,944 INFO L276 IsEmpty]: Start isEmpty. Operand 25849 states and 32405 transitions. [2023-12-21 22:04:43,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 22:04:43,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:43,959 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:43,964 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 22:04:44,164 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 22:04:44,164 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:44,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:44,165 INFO L85 PathProgramCache]: Analyzing trace with hash -806177776, now seen corresponding path program 1 times [2023-12-21 22:04:44,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:44,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201537954] [2023-12-21 22:04:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:44,165 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 22:04:44,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:44,167 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 22:04:44,168 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 22:04:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:44,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:04:44,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 22:04:44,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:44,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:44,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201537954] [2023-12-21 22:04:44,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201537954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:44,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:44,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:04:44,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645340835] [2023-12-21 22:04:44,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:44,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:04:44,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:04:44,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:04:44,295 INFO L87 Difference]: Start difference. First operand 25849 states and 32405 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 22:04:45,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:45,313 INFO L93 Difference]: Finished difference Result 49560 states and 60824 transitions. [2023-12-21 22:04:45,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:04:45,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 153 [2023-12-21 22:04:45,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:45,371 INFO L225 Difference]: With dead ends: 49560 [2023-12-21 22:04:45,371 INFO L226 Difference]: Without dead ends: 25844 [2023-12-21 22:04:45,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 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 22:04:45,397 INFO L413 NwaCegarLoop]: 4188 mSDtfsCounter, 245 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 8145 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:45,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 8145 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:04:45,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25844 states. [2023-12-21 22:04:46,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25844 to 25844. [2023-12-21 22:04:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25844 states, 23534 states have (on average 1.263108693804708) internal successors, (29726), 23840 states have internal predecessors, (29726), 996 states have call successors, (996), 832 states have call predecessors, (996), 1312 states have return successors, (1672), 1172 states have call predecessors, (1672), 996 states have call successors, (1672) [2023-12-21 22:04:46,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25844 states to 25844 states and 32394 transitions. [2023-12-21 22:04:46,563 INFO L78 Accepts]: Start accepts. Automaton has 25844 states and 32394 transitions. Word has length 153 [2023-12-21 22:04:46,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:46,564 INFO L495 AbstractCegarLoop]: Abstraction has 25844 states and 32394 transitions. [2023-12-21 22:04:46,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 22:04:46,564 INFO L276 IsEmpty]: Start isEmpty. Operand 25844 states and 32394 transitions. [2023-12-21 22:04:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 22:04:46,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:46,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:46,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-21 22:04:46,779 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 22:04:46,780 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:46,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:46,780 INFO L85 PathProgramCache]: Analyzing trace with hash 662298163, now seen corresponding path program 1 times [2023-12-21 22:04:46,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:46,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313286122] [2023-12-21 22:04:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:46,781 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 22:04:46,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:46,782 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 22:04:46,783 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 22:04:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:46,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:04:46,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:47,146 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 22:04:47,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:47,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:47,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313286122] [2023-12-21 22:04:47,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313286122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:47,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:47,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:04:47,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994152011] [2023-12-21 22:04:47,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:47,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:04:47,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:04:47,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:04:47,149 INFO L87 Difference]: Start difference. First operand 25844 states and 32394 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 22:04:49,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:49,125 INFO L93 Difference]: Finished difference Result 69972 states and 85259 transitions. [2023-12-21 22:04:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:04:49,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 155 [2023-12-21 22:04:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:49,204 INFO L225 Difference]: With dead ends: 69972 [2023-12-21 22:04:49,205 INFO L226 Difference]: Without dead ends: 46262 [2023-12-21 22:04:49,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 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 22:04:49,226 INFO L413 NwaCegarLoop]: 4174 mSDtfsCounter, 4241 mSDsluCounter, 4244 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 8418 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:49,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4247 Valid, 8418 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:04:49,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46262 states. [2023-12-21 22:04:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46262 to 46260. [2023-12-21 22:04:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46260 states, 41899 states have (on average 1.2332275233299124) internal successors, (51671), 42510 states have internal predecessors, (51671), 1863 states have call successors, (1863), 1536 states have call predecessors, (1863), 2496 states have return successors, (3227), 2215 states have call predecessors, (3227), 1863 states have call successors, (3227) [2023-12-21 22:04:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46260 states to 46260 states and 56761 transitions. [2023-12-21 22:04:51,541 INFO L78 Accepts]: Start accepts. Automaton has 46260 states and 56761 transitions. Word has length 155 [2023-12-21 22:04:51,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:51,542 INFO L495 AbstractCegarLoop]: Abstraction has 46260 states and 56761 transitions. [2023-12-21 22:04:51,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 22:04:51,542 INFO L276 IsEmpty]: Start isEmpty. Operand 46260 states and 56761 transitions. [2023-12-21 22:04:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 22:04:51,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:51,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:51,561 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 (28)] Ended with exit code 0 [2023-12-21 22:04:51,758 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 22:04:51,758 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:51,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:51,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1000585713, now seen corresponding path program 1 times [2023-12-21 22:04:51,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:51,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853529535] [2023-12-21 22:04:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:51,759 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 22:04:51,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:51,760 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 22:04:51,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-21 22:04:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:51,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:04:51,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-21 22:04:51,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:51,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:51,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853529535] [2023-12-21 22:04:51,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853529535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:51,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:51,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:04:51,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641792251] [2023-12-21 22:04:51,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:51,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:04:51,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:51,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:04:51,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:04:51,874 INFO L87 Difference]: Start difference. First operand 46260 states and 56761 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 22:04:54,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:04:54,149 INFO L93 Difference]: Finished difference Result 90382 states and 109538 transitions. [2023-12-21 22:04:54,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:04:54,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 155 [2023-12-21 22:04:54,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:04:54,220 INFO L225 Difference]: With dead ends: 90382 [2023-12-21 22:04:54,220 INFO L226 Difference]: Without dead ends: 46256 [2023-12-21 22:04:54,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 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 22:04:54,251 INFO L413 NwaCegarLoop]: 4187 mSDtfsCounter, 243 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 8144 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:04:54,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 8144 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:04:54,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46256 states. [2023-12-21 22:04:56,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46256 to 46256. [2023-12-21 22:04:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46256 states, 41898 states have (on average 1.2332092223972504) internal successors, (51669), 42508 states have internal predecessors, (51669), 1860 states have call successors, (1860), 1536 states have call predecessors, (1860), 2496 states have return successors, (3224), 2212 states have call predecessors, (3224), 1860 states have call successors, (3224) [2023-12-21 22:04:56,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46256 states to 46256 states and 56753 transitions. [2023-12-21 22:04:56,487 INFO L78 Accepts]: Start accepts. Automaton has 46256 states and 56753 transitions. Word has length 155 [2023-12-21 22:04:56,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:04:56,487 INFO L495 AbstractCegarLoop]: Abstraction has 46256 states and 56753 transitions. [2023-12-21 22:04:56,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 22:04:56,487 INFO L276 IsEmpty]: Start isEmpty. Operand 46256 states and 56753 transitions. [2023-12-21 22:04:56,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 22:04:56,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:04:56,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:56,506 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 (29)] Ended with exit code 0 [2023-12-21 22:04:56,703 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 22:04:56,704 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:04:56,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:04:56,704 INFO L85 PathProgramCache]: Analyzing trace with hash 253673102, now seen corresponding path program 1 times [2023-12-21 22:04:56,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:04:56,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988710165] [2023-12-21 22:04:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:04:56,705 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 22:04:56,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:04:56,706 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 22:04:56,706 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 22:04:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:04:56,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:04:56,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:04:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 22:04:56,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:04:56,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:04:56,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988710165] [2023-12-21 22:04:56,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988710165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:04:56,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:04:56,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:04:56,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893559675] [2023-12-21 22:04:56,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:04:56,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:04:56,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:04:56,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:04:56,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:04:56,848 INFO L87 Difference]: Start difference. First operand 46256 states and 56753 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 22:05:00,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:05:00,534 INFO L93 Difference]: Finished difference Result 125483 states and 151950 transitions. [2023-12-21 22:05:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:05:00,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 157 [2023-12-21 22:05:00,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:05:00,700 INFO L225 Difference]: With dead ends: 125483 [2023-12-21 22:05:00,700 INFO L226 Difference]: Without dead ends: 63980 [2023-12-21 22:05:00,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 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 22:05:00,746 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 205 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 8568 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:05:00,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 8568 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:05:00,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63980 states. [2023-12-21 22:05:03,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63980 to 63980. [2023-12-21 22:05:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63980 states, 57862 states have (on average 1.2219072966713906) internal successors, (70702), 58664 states have internal predecessors, (70702), 2660 states have call successors, (2660), 2176 states have call predecessors, (2660), 3456 states have return successors, (4642), 3140 states have call predecessors, (4642), 2660 states have call successors, (4642) [2023-12-21 22:05:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63980 states to 63980 states and 78004 transitions. [2023-12-21 22:05:03,822 INFO L78 Accepts]: Start accepts. Automaton has 63980 states and 78004 transitions. Word has length 157 [2023-12-21 22:05:03,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:05:03,823 INFO L495 AbstractCegarLoop]: Abstraction has 63980 states and 78004 transitions. [2023-12-21 22:05:03,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 22:05:03,823 INFO L276 IsEmpty]: Start isEmpty. Operand 63980 states and 78004 transitions. [2023-12-21 22:05:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 22:05:03,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:05:03,851 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 22:05:03,854 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 22:05:04,052 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 22:05:04,052 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:05:04,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:05:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash 950107017, now seen corresponding path program 1 times [2023-12-21 22:05:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:05:04,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706141796] [2023-12-21 22:05:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:05:04,053 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 22:05:04,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:05:04,054 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 22:05:04,055 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 22:05:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:05:04,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:05:04,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:05:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 22:05:04,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:05:04,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:05:04,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706141796] [2023-12-21 22:05:04,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706141796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:05:04,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:05:04,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 22:05:04,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696024787] [2023-12-21 22:05:04,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:05:04,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:05:04,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:05:04,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:05:04,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:05:04,338 INFO L87 Difference]: Start difference. First operand 63980 states and 78004 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 22:05:07,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:05:07,895 INFO L93 Difference]: Finished difference Result 143623 states and 173984 transitions. [2023-12-21 22:05:07,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:05:07,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 198 [2023-12-21 22:05:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:05:08,065 INFO L225 Difference]: With dead ends: 143623 [2023-12-21 22:05:08,065 INFO L226 Difference]: Without dead ends: 81776 [2023-12-21 22:05:08,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 196 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 22:05:08,125 INFO L413 NwaCegarLoop]: 4187 mSDtfsCounter, 4077 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4077 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:05:08,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4077 Valid, 4396 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:05:08,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81776 states. [2023-12-21 22:05:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81776 to 81680. [2023-12-21 22:05:11,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81680 states, 73786 states have (on average 1.2093079988073618) internal successors, (89230), 74788 states have internal predecessors, (89230), 3460 states have call successors, (3460), 2816 states have call predecessors, (3460), 4432 states have return successors, (5974), 4076 states have call predecessors, (5974), 3460 states have call successors, (5974) [2023-12-21 22:05:12,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81680 states to 81680 states and 98664 transitions. [2023-12-21 22:05:12,125 INFO L78 Accepts]: Start accepts. Automaton has 81680 states and 98664 transitions. Word has length 198 [2023-12-21 22:05:12,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:05:12,125 INFO L495 AbstractCegarLoop]: Abstraction has 81680 states and 98664 transitions. [2023-12-21 22:05:12,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 22:05:12,125 INFO L276 IsEmpty]: Start isEmpty. Operand 81680 states and 98664 transitions. [2023-12-21 22:05:12,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-21 22:05:12,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:05:12,167 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2023-12-21 22:05:12,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-12-21 22:05:12,367 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 22:05:12,368 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:05:12,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:05:12,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1306973499, now seen corresponding path program 1 times [2023-12-21 22:05:12,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:05:12,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49297621] [2023-12-21 22:05:12,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:05:12,369 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 22:05:12,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:05:12,370 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 22:05:12,390 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 22:05:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:05:12,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:05:12,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:05:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 22:05:12,604 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:05:12,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:05:12,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49297621] [2023-12-21 22:05:12,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49297621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:05:12,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:05:12,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:05:12,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882905437] [2023-12-21 22:05:12,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:05:12,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:05:12,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:05:12,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:05:12,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:05:12,606 INFO L87 Difference]: Start difference. First operand 81680 states and 98664 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 22:05:16,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:05:16,579 INFO L93 Difference]: Finished difference Result 162164 states and 194729 transitions. [2023-12-21 22:05:16,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:05:16,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 225 [2023-12-21 22:05:16,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:05:16,815 INFO L225 Difference]: With dead ends: 162164 [2023-12-21 22:05:16,815 INFO L226 Difference]: Without dead ends: 82618 [2023-12-21 22:05:16,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:05:16,869 INFO L413 NwaCegarLoop]: 4134 mSDtfsCounter, 4272 mSDsluCounter, 4235 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4278 SdHoareTripleChecker+Valid, 8369 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 22:05:16,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4278 Valid, 8369 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 22:05:16,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82618 states. [2023-12-21 22:05:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82618 to 82618. [2023-12-21 22:05:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82618 states, 74628 states have (on average 1.2033821085919494) internal successors, (89806), 75678 states have internal predecessors, (89806), 3460 states have call successors, (3460), 2816 states have call predecessors, (3460), 4528 states have return successors, (5512), 4124 states have call predecessors, (5512), 3460 states have call successors, (5512) [2023-12-21 22:05:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82618 states to 82618 states and 98778 transitions. [2023-12-21 22:05:20,678 INFO L78 Accepts]: Start accepts. Automaton has 82618 states and 98778 transitions. Word has length 225 [2023-12-21 22:05:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:05:20,678 INFO L495 AbstractCegarLoop]: Abstraction has 82618 states and 98778 transitions. [2023-12-21 22:05:20,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-21 22:05:20,678 INFO L276 IsEmpty]: Start isEmpty. Operand 82618 states and 98778 transitions. [2023-12-21 22:05:20,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-21 22:05:20,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:05:20,891 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2023-12-21 22:05:20,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-12-21 22:05:21,096 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 22:05:21,096 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:05:21,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:05:21,097 INFO L85 PathProgramCache]: Analyzing trace with hash -338500976, now seen corresponding path program 1 times [2023-12-21 22:05:21,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:05:21,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223009054] [2023-12-21 22:05:21,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:05:21,097 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 22:05:21,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:05:21,098 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 22:05:21,106 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 22:05:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:05:21,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:05:21,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:05:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-21 22:05:21,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:05:21,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:05:21,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223009054] [2023-12-21 22:05:21,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223009054] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:05:21,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:05:21,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:05:21,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563365661] [2023-12-21 22:05:21,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:05:21,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:05:21,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:05:21,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:05:21,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:05:21,262 INFO L87 Difference]: Start difference. First operand 82618 states and 98778 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11)