/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.10.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 22:05:58,397 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 22:05:58,466 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 22:05:58,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 22:05:58,470 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 22:05:58,490 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 22:05:58,491 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 22:05:58,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 22:05:58,492 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 22:05:58,492 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 22:05:58,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 22:05:58,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 22:05:58,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 22:05:58,493 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 22:05:58,494 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 22:05:58,494 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 22:05:58,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 22:05:58,495 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 22:05:58,495 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 22:05:58,495 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 22:05:58,495 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 22:05:58,496 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 22:05:58,496 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 22:05:58,496 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 22:05:58,497 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 22:05:58,497 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 22:05:58,497 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 22:05:58,497 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 22:05:58,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 22:05:58,498 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 22:05:58,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 22:05:58,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 22:05:58,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 22:05:58,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 22:05:58,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 22:05:58,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 22:05:58,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 22:05:58,500 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 22:05:58,500 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 22:05:58,500 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 22:05:58,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 22:05:58,501 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 22:05:58,501 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 22:05:58,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 22:05:58,501 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 22:05:58,501 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 22:05:58,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 22:05:58,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 22:05:58,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 22:05:58,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 22:05:58,695 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 22:05:58,695 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 22:05:58,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.10.cil-2.c [2023-12-21 22:05:59,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 22:06:00,499 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 22:06:00,500 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.10.cil-2.c [2023-12-21 22:06:00,549 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c840926dc/25a78c0a59cc470287347bc3985fccff/FLAGc51493f10 [2023-12-21 22:06:00,561 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c840926dc/25a78c0a59cc470287347bc3985fccff [2023-12-21 22:06:00,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 22:06:00,568 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 22:06:00,571 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 22:06:00,571 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 22:06:00,575 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 22:06:00,576 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:06:00" (1/1) ... [2023-12-21 22:06:00,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@513813af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:00, skipping insertion in model container [2023-12-21 22:06:00,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:06:00" (1/1) ... [2023-12-21 22:06:00,806 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 22:06:02,376 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.10.cil-2.c[382357,382370] [2023-12-21 22:06:02,396 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.10.cil-2.c[383339,383352] [2023-12-21 22:06:02,630 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 22:06:02,645 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 22:06:03,369 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.10.cil-2.c[382357,382370] [2023-12-21 22:06:03,373 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.10.cil-2.c[383339,383352] [2023-12-21 22:06:03,411 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 22:06:03,469 INFO L206 MainTranslator]: Completed translation [2023-12-21 22:06:03,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03 WrapperNode [2023-12-21 22:06:03,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 22:06:03,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 22:06:03,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 22:06:03,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 22:06:03,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:03,610 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:03,963 INFO L138 Inliner]: procedures = 65, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13075 [2023-12-21 22:06:03,963 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 22:06:03,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 22:06:03,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 22:06:03,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 22:06:03,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:03,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:04,053 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:04,230 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 22:06:04,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:04,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:04,403 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:04,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:04,548 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:04,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:04,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 22:06:04,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 22:06:04,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 22:06:04,632 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 22:06:04,633 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03" (1/1) ... [2023-12-21 22:06:04,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 22:06:04,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 22:06:04,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 22:06:04,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 22:06:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 22:06:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 22:06:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 22:06:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 22:06:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 22:06:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 22:06:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 22:06:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 22:06:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 22:06:04,690 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 22:06:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 22:06:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 22:06:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 22:06:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 22:06:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 22:06:04,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 22:06:04,817 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 22:06:04,819 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 22:06:13,584 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 22:06:13,677 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 22:06:13,677 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-12-21 22:06:13,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:06:13 BoogieIcfgContainer [2023-12-21 22:06:13,678 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 22:06:13,680 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 22:06:13,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 22:06:13,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 22:06:13,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:06:00" (1/3) ... [2023-12-21 22:06:13,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fee940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:06:13, skipping insertion in model container [2023-12-21 22:06:13,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:06:03" (2/3) ... [2023-12-21 22:06:13,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fee940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:06:13, skipping insertion in model container [2023-12-21 22:06:13,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:06:13" (3/3) ... [2023-12-21 22:06:13,685 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.10.cil-2.c [2023-12-21 22:06:13,699 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 22:06:13,699 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 22:06:13,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 22:06:13,772 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;@3d52bff7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 22:06:13,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 22:06:13,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 2425 states, 2392 states have (on average 1.8775083612040133) internal successors, (4491), 2395 states have internal predecessors, (4491), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 22:06:13,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:13,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:13,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:13,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:13,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:13,804 INFO L85 PathProgramCache]: Analyzing trace with hash -951249728, now seen corresponding path program 1 times [2023-12-21 22:06:13,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:13,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476171928] [2023-12-21 22:06:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:13,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:13,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:13,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:13,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 22:06:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:14,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:06:14,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:14,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:14,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:14,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476171928] [2023-12-21 22:06:14,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476171928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:14,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:14,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:06:14,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686926210] [2023-12-21 22:06:14,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:14,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:06:14,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:14,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:06:14,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:14,202 INFO L87 Difference]: Start difference. First operand has 2425 states, 2392 states have (on average 1.8775083612040133) internal successors, (4491), 2395 states have internal predecessors, (4491), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:14,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:14,425 INFO L93 Difference]: Finished difference Result 4842 states and 9061 transitions. [2023-12-21 22:06:14,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:06:14,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:14,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:14,447 INFO L225 Difference]: With dead ends: 4842 [2023-12-21 22:06:14,448 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 22:06:14,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:14,459 INFO L413 NwaCegarLoop]: 4407 mSDtfsCounter, 478 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 8366 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:14,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 8366 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:14,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 22:06:14,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 22:06:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8396818752616158) internal successors, (4395), 2391 states have internal predecessors, (4395), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 22:06:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4443 transitions. [2023-12-21 22:06:14,584 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4443 transitions. Word has length 141 [2023-12-21 22:06:14,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:14,585 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4443 transitions. [2023-12-21 22:06:14,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:14,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4443 transitions. [2023-12-21 22:06:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:14,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:14,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:14,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:14,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:14,798 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:14,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:14,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1626409854, now seen corresponding path program 1 times [2023-12-21 22:06:14,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:14,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375152494] [2023-12-21 22:06:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:14,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:14,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:14,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:14,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 22:06:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:14,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:14,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:15,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:15,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:15,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:15,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375152494] [2023-12-21 22:06:15,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375152494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:15,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:15,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532341971] [2023-12-21 22:06:15,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:15,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:15,111 INFO L87 Difference]: Start difference. First operand 2421 states and 4443 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:15,682 INFO L93 Difference]: Finished difference Result 2705 states and 4904 transitions. [2023-12-21 22:06:15,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:15,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:15,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:15,693 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 22:06:15,694 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 22:06:15,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:15,697 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 4611 mSDsluCounter, 8388 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4629 SdHoareTripleChecker+Valid, 12648 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:15,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4629 Valid, 12648 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:15,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 22:06:15,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 22:06:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8384261197153622) internal successors, (4392), 2391 states have internal predecessors, (4392), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 22:06:15,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4440 transitions. [2023-12-21 22:06:15,760 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4440 transitions. Word has length 141 [2023-12-21 22:06:15,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:15,760 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4440 transitions. [2023-12-21 22:06:15,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:15,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4440 transitions. [2023-12-21 22:06:15,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:15,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:15,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:15,771 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 22:06:15,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:15,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:15,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:15,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2127245250, now seen corresponding path program 1 times [2023-12-21 22:06:15,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:15,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814101994] [2023-12-21 22:06:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:15,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:15,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:15,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:15,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 22:06:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:16,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:16,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:16,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:16,248 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:16,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814101994] [2023-12-21 22:06:16,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814101994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:16,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:16,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:16,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890795296] [2023-12-21 22:06:16,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:16,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:16,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:16,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:16,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:16,253 INFO L87 Difference]: Start difference. First operand 2421 states and 4440 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:16,756 INFO L93 Difference]: Finished difference Result 2705 states and 4898 transitions. [2023-12-21 22:06:16,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:16,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:16,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:16,767 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 22:06:16,767 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 22:06:16,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:16,770 INFO L413 NwaCegarLoop]: 4257 mSDtfsCounter, 4605 mSDsluCounter, 8384 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4623 SdHoareTripleChecker+Valid, 12641 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:16,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4623 Valid, 12641 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:16,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 22:06:16,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 22:06:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8371703641691084) internal successors, (4389), 2391 states have internal predecessors, (4389), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 22:06:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4437 transitions. [2023-12-21 22:06:16,827 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4437 transitions. Word has length 141 [2023-12-21 22:06:16,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:16,828 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4437 transitions. [2023-12-21 22:06:16,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:16,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4437 transitions. [2023-12-21 22:06:16,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:16,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:16,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:16,838 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 22:06:17,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:17,039 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:17,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:17,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1034610048, now seen corresponding path program 1 times [2023-12-21 22:06:17,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:17,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250077090] [2023-12-21 22:06:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:17,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:17,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:17,043 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:17,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-21 22:06:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:17,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:17,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:17,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:17,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:17,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250077090] [2023-12-21 22:06:17,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250077090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:17,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:17,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:17,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169076483] [2023-12-21 22:06:17,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:17,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:17,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:17,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:17,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:17,282 INFO L87 Difference]: Start difference. First operand 2421 states and 4437 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:17,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:17,871 INFO L93 Difference]: Finished difference Result 2705 states and 4892 transitions. [2023-12-21 22:06:17,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:17,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:17,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:17,881 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 22:06:17,881 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 22:06:17,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:17,884 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 4599 mSDsluCounter, 8380 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 12634 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:17,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 12634 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:17,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 22:06:17,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 22:06:17,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8359146086228548) internal successors, (4386), 2391 states have internal predecessors, (4386), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 22:06:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4434 transitions. [2023-12-21 22:06:17,948 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4434 transitions. Word has length 141 [2023-12-21 22:06:17,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:17,948 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4434 transitions. [2023-12-21 22:06:17,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:17,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4434 transitions. [2023-12-21 22:06:17,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:17,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:17,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:17,961 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 22:06:18,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:18,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:18,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash -641929024, now seen corresponding path program 1 times [2023-12-21 22:06:18,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:18,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853222613] [2023-12-21 22:06:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:18,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:18,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:18,159 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:18,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 22:06:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:18,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:18,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:18,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:18,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:18,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853222613] [2023-12-21 22:06:18,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853222613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:18,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:18,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:18,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336302804] [2023-12-21 22:06:18,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:18,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:18,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:18,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:18,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:18,409 INFO L87 Difference]: Start difference. First operand 2421 states and 4434 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:18,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:18,916 INFO L93 Difference]: Finished difference Result 2705 states and 4886 transitions. [2023-12-21 22:06:18,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:18,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:18,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:18,932 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 22:06:18,935 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 22:06:18,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:18,942 INFO L413 NwaCegarLoop]: 4251 mSDtfsCounter, 4593 mSDsluCounter, 8376 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 12627 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:18,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4611 Valid, 12627 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:18,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 22:06:18,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 22:06:19,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.834658853076601) internal successors, (4383), 2391 states have internal predecessors, (4383), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 22:06:19,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4431 transitions. [2023-12-21 22:06:19,022 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4431 transitions. Word has length 141 [2023-12-21 22:06:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:19,022 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4431 transitions. [2023-12-21 22:06:19,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4431 transitions. [2023-12-21 22:06:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:19,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:19,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:19,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:19,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:19,230 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:19,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash 966557056, now seen corresponding path program 1 times [2023-12-21 22:06:19,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:19,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474870231] [2023-12-21 22:06:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:19,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:19,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:19,234 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:19,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 22:06:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:19,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:19,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:19,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:19,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:19,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474870231] [2023-12-21 22:06:19,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474870231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:19,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:19,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:19,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141891576] [2023-12-21 22:06:19,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:19,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:19,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:19,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:19,469 INFO L87 Difference]: Start difference. First operand 2421 states and 4431 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:19,967 INFO L93 Difference]: Finished difference Result 2705 states and 4880 transitions. [2023-12-21 22:06:19,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:19,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:19,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:19,978 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 22:06:19,978 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 22:06:19,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:19,981 INFO L413 NwaCegarLoop]: 4248 mSDtfsCounter, 4587 mSDsluCounter, 8372 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4605 SdHoareTripleChecker+Valid, 12620 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:19,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4605 Valid, 12620 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:19,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 22:06:20,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 22:06:20,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8334030975303475) internal successors, (4380), 2391 states have internal predecessors, (4380), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 22:06:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4428 transitions. [2023-12-21 22:06:20,051 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4428 transitions. Word has length 141 [2023-12-21 22:06:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:20,051 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4428 transitions. [2023-12-21 22:06:20,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4428 transitions. [2023-12-21 22:06:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:20,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:20,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:20,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-21 22:06:20,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:20,259 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:20,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1295538368, now seen corresponding path program 1 times [2023-12-21 22:06:20,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:20,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691073674] [2023-12-21 22:06:20,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:20,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:20,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:20,262 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:20,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 22:06:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:20,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:20,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:20,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:20,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:20,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691073674] [2023-12-21 22:06:20,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691073674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:20,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:20,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:20,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210586782] [2023-12-21 22:06:20,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:20,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:20,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:20,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:20,508 INFO L87 Difference]: Start difference. First operand 2421 states and 4428 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:20,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:20,989 INFO L93 Difference]: Finished difference Result 2705 states and 4874 transitions. [2023-12-21 22:06:20,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:20,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:20,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:21,000 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 22:06:21,000 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 22:06:21,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:21,003 INFO L413 NwaCegarLoop]: 4245 mSDtfsCounter, 4581 mSDsluCounter, 8368 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4599 SdHoareTripleChecker+Valid, 12613 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:21,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4599 Valid, 12613 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:21,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 22:06:21,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 22:06:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8321473419840937) internal successors, (4377), 2391 states have internal predecessors, (4377), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 22:06:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4425 transitions. [2023-12-21 22:06:21,066 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4425 transitions. Word has length 141 [2023-12-21 22:06:21,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:21,067 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4425 transitions. [2023-12-21 22:06:21,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:21,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4425 transitions. [2023-12-21 22:06:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:21,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:21,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:21,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:21,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:21,277 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:21,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:21,278 INFO L85 PathProgramCache]: Analyzing trace with hash 890508672, now seen corresponding path program 1 times [2023-12-21 22:06:21,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:21,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918546166] [2023-12-21 22:06:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:21,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:21,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:21,280 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:21,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 22:06:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:21,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:21,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:21,519 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 22:06:21,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:21,519 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:21,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918546166] [2023-12-21 22:06:21,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918546166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:21,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:21,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783365916] [2023-12-21 22:06:21,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:21,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:21,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:21,521 INFO L87 Difference]: Start difference. First operand 2421 states and 4425 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:21,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:21,969 INFO L93 Difference]: Finished difference Result 2705 states and 4868 transitions. [2023-12-21 22:06:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:21,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:21,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:21,980 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 22:06:21,980 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 22:06:21,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:21,983 INFO L413 NwaCegarLoop]: 4242 mSDtfsCounter, 4575 mSDsluCounter, 8364 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4593 SdHoareTripleChecker+Valid, 12606 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:21,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4593 Valid, 12606 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:21,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 22:06:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 22:06:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8308915864378401) internal successors, (4374), 2391 states have internal predecessors, (4374), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 22:06:22,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4422 transitions. [2023-12-21 22:06:22,055 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4422 transitions. Word has length 141 [2023-12-21 22:06:22,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:22,056 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4422 transitions. [2023-12-21 22:06:22,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:22,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4422 transitions. [2023-12-21 22:06:22,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:22,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:22,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:22,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:22,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:22,265 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:22,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:22,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1200766784, now seen corresponding path program 1 times [2023-12-21 22:06:22,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:22,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022238334] [2023-12-21 22:06:22,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:22,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:22,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:22,267 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:22,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 22:06:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:22,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:22,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:22,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:22,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:22,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022238334] [2023-12-21 22:06:22,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022238334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:22,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:22,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:22,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500079868] [2023-12-21 22:06:22,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:22,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:22,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:22,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:22,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:22,470 INFO L87 Difference]: Start difference. First operand 2421 states and 4422 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:22,875 INFO L93 Difference]: Finished difference Result 2705 states and 4862 transitions. [2023-12-21 22:06:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:22,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:22,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:22,885 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 22:06:22,885 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 22:06:22,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:22,887 INFO L413 NwaCegarLoop]: 4239 mSDtfsCounter, 4568 mSDsluCounter, 8360 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4586 SdHoareTripleChecker+Valid, 12599 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:22,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4586 Valid, 12599 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:06:22,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 22:06:22,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 22:06:22,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8296358308915865) internal successors, (4371), 2391 states have internal predecessors, (4371), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 22:06:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4419 transitions. [2023-12-21 22:06:22,936 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4419 transitions. Word has length 141 [2023-12-21 22:06:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:22,937 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4419 transitions. [2023-12-21 22:06:22,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4419 transitions. [2023-12-21 22:06:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:22,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:22,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:22,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-21 22:06:23,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:23,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:23,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:23,145 INFO L85 PathProgramCache]: Analyzing trace with hash 549010432, now seen corresponding path program 1 times [2023-12-21 22:06:23,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:23,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431459234] [2023-12-21 22:06:23,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:23,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:23,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:23,146 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:23,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 22:06:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:23,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:23,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:23,361 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 22:06:23,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:23,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:23,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431459234] [2023-12-21 22:06:23,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431459234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:23,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:23,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:23,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134533887] [2023-12-21 22:06:23,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:23,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:23,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:23,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:23,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:23,364 INFO L87 Difference]: Start difference. First operand 2421 states and 4419 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:23,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:23,783 INFO L93 Difference]: Finished difference Result 2705 states and 4856 transitions. [2023-12-21 22:06:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:23,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:23,793 INFO L225 Difference]: With dead ends: 2705 [2023-12-21 22:06:23,793 INFO L226 Difference]: Without dead ends: 2421 [2023-12-21 22:06:23,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:23,796 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 4562 mSDsluCounter, 8356 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4580 SdHoareTripleChecker+Valid, 12592 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:23,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4580 Valid, 12592 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:23,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2023-12-21 22:06:23,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2023-12-21 22:06:23,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8283800753453328) internal successors, (4368), 2391 states have internal predecessors, (4368), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 22:06:23,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4416 transitions. [2023-12-21 22:06:23,923 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4416 transitions. Word has length 141 [2023-12-21 22:06:23,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:23,924 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4416 transitions. [2023-12-21 22:06:23,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:23,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4416 transitions. [2023-12-21 22:06:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:23,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:23,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:23,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:24,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:24,131 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:24,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:24,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1020366782, now seen corresponding path program 1 times [2023-12-21 22:06:24,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:24,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709792192] [2023-12-21 22:06:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:24,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:24,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:24,134 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:24,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 22:06:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:24,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:24,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:24,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:24,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:24,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:24,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709792192] [2023-12-21 22:06:24,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709792192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:24,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:24,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:24,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141482692] [2023-12-21 22:06:24,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:24,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:24,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:24,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:24,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:24,325 INFO L87 Difference]: Start difference. First operand 2421 states and 4416 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:24,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:24,929 INFO L93 Difference]: Finished difference Result 2776 states and 4967 transitions. [2023-12-21 22:06:24,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:24,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:24,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:24,938 INFO L225 Difference]: With dead ends: 2776 [2023-12-21 22:06:24,938 INFO L226 Difference]: Without dead ends: 2492 [2023-12-21 22:06:24,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:24,941 INFO L413 NwaCegarLoop]: 4234 mSDtfsCounter, 4652 mSDsluCounter, 8352 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4670 SdHoareTripleChecker+Valid, 12586 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:24,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4670 Valid, 12586 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:06:24,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2023-12-21 22:06:25,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2492. [2023-12-21 22:06:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2492 states, 2457 states have (on average 1.8172568172568173) internal successors, (4465), 2459 states have internal predecessors, (4465), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-21 22:06:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2492 states to 2492 states and 4515 transitions. [2023-12-21 22:06:25,015 INFO L78 Accepts]: Start accepts. Automaton has 2492 states and 4515 transitions. Word has length 141 [2023-12-21 22:06:25,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:25,015 INFO L495 AbstractCegarLoop]: Abstraction has 2492 states and 4515 transitions. [2023-12-21 22:06:25,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2492 states and 4515 transitions. [2023-12-21 22:06:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:25,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:25,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:25,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:25,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:25,223 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:25,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:25,223 INFO L85 PathProgramCache]: Analyzing trace with hash -780872803, now seen corresponding path program 1 times [2023-12-21 22:06:25,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:25,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255447880] [2023-12-21 22:06:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:25,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:25,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:25,225 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:25,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 22:06:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:25,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:25,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:25,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:25,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:25,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255447880] [2023-12-21 22:06:25,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255447880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:25,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:25,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:25,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4742652] [2023-12-21 22:06:25,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:25,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:25,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:25,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:25,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:25,436 INFO L87 Difference]: Start difference. First operand 2492 states and 4515 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:26,017 INFO L93 Difference]: Finished difference Result 2918 states and 5165 transitions. [2023-12-21 22:06:26,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:26,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:26,024 INFO L225 Difference]: With dead ends: 2918 [2023-12-21 22:06:26,024 INFO L226 Difference]: Without dead ends: 2563 [2023-12-21 22:06:26,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:26,026 INFO L413 NwaCegarLoop]: 4231 mSDtfsCounter, 4645 mSDsluCounter, 8348 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 12579 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:26,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4663 Valid, 12579 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:06:26,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2023-12-21 22:06:26,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2563. [2023-12-21 22:06:26,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2525 states have (on average 1.805940594059406) internal successors, (4560), 2527 states have internal predecessors, (4560), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 22:06:26,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 4612 transitions. [2023-12-21 22:06:26,090 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 4612 transitions. Word has length 141 [2023-12-21 22:06:26,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:26,091 INFO L495 AbstractCegarLoop]: Abstraction has 2563 states and 4612 transitions. [2023-12-21 22:06:26,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:26,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 4612 transitions. [2023-12-21 22:06:26,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:26,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:26,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:26,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:26,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:26,301 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:26,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:26,301 INFO L85 PathProgramCache]: Analyzing trace with hash -988995491, now seen corresponding path program 1 times [2023-12-21 22:06:26,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:26,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501498298] [2023-12-21 22:06:26,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:26,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:26,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:26,303 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:26,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-21 22:06:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:26,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:26,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:26,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:26,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:26,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501498298] [2023-12-21 22:06:26,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501498298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:26,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:26,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:26,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570290699] [2023-12-21 22:06:26,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:26,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:26,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:26,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:26,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:26,499 INFO L87 Difference]: Start difference. First operand 2563 states and 4612 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:27,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:27,018 INFO L93 Difference]: Finished difference Result 3060 states and 5359 transitions. [2023-12-21 22:06:27,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:27,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:27,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:27,025 INFO L225 Difference]: With dead ends: 3060 [2023-12-21 22:06:27,026 INFO L226 Difference]: Without dead ends: 2634 [2023-12-21 22:06:27,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:27,029 INFO L413 NwaCegarLoop]: 4228 mSDtfsCounter, 4639 mSDsluCounter, 8344 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 12572 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:27,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 12572 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:06:27,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2023-12-21 22:06:27,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2634. [2023-12-21 22:06:27,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2593 states have (on average 1.7944465869649056) internal successors, (4653), 2595 states have internal predecessors, (4653), 27 states have call successors, (27), 12 states have call predecessors, (27), 12 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-21 22:06:27,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 4707 transitions. [2023-12-21 22:06:27,106 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 4707 transitions. Word has length 141 [2023-12-21 22:06:27,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:27,107 INFO L495 AbstractCegarLoop]: Abstraction has 2634 states and 4707 transitions. [2023-12-21 22:06:27,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:27,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 4707 transitions. [2023-12-21 22:06:27,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:27,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:27,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:27,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:27,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:27,315 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:27,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:27,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1043620100, now seen corresponding path program 1 times [2023-12-21 22:06:27,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:27,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035596304] [2023-12-21 22:06:27,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:27,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:27,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:27,318 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:27,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 22:06:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:27,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:27,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:27,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:27,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:27,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035596304] [2023-12-21 22:06:27,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035596304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:27,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:27,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:27,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114635299] [2023-12-21 22:06:27,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:27,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:27,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:27,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:27,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:27,516 INFO L87 Difference]: Start difference. First operand 2634 states and 4707 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:28,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:28,001 INFO L93 Difference]: Finished difference Result 3202 states and 5549 transitions. [2023-12-21 22:06:28,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:28,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:28,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:28,008 INFO L225 Difference]: With dead ends: 3202 [2023-12-21 22:06:28,008 INFO L226 Difference]: Without dead ends: 2705 [2023-12-21 22:06:28,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:28,011 INFO L413 NwaCegarLoop]: 4225 mSDtfsCounter, 4632 mSDsluCounter, 8340 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4650 SdHoareTripleChecker+Valid, 12565 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:28,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4650 Valid, 12565 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2023-12-21 22:06:28,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2705. [2023-12-21 22:06:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2661 states have (on average 1.7827884254039834) internal successors, (4744), 2663 states have internal predecessors, (4744), 28 states have call successors, (28), 14 states have call predecessors, (28), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-21 22:06:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 4800 transitions. [2023-12-21 22:06:28,077 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 4800 transitions. Word has length 141 [2023-12-21 22:06:28,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:28,077 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 4800 transitions. [2023-12-21 22:06:28,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 4800 transitions. [2023-12-21 22:06:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:28,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:28,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:28,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:28,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:28,285 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:28,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:28,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1416242947, now seen corresponding path program 1 times [2023-12-21 22:06:28,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:28,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404579862] [2023-12-21 22:06:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:28,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:28,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:28,287 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:28,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-21 22:06:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:28,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:28,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:28,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:28,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:28,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404579862] [2023-12-21 22:06:28,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404579862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:28,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:28,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:28,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334991075] [2023-12-21 22:06:28,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:28,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:28,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:28,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:28,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:28,463 INFO L87 Difference]: Start difference. First operand 2705 states and 4800 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:28,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:28,982 INFO L93 Difference]: Finished difference Result 3344 states and 5735 transitions. [2023-12-21 22:06:28,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:28,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:28,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:28,988 INFO L225 Difference]: With dead ends: 3344 [2023-12-21 22:06:28,988 INFO L226 Difference]: Without dead ends: 2776 [2023-12-21 22:06:28,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:28,991 INFO L413 NwaCegarLoop]: 4222 mSDtfsCounter, 4625 mSDsluCounter, 8336 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4643 SdHoareTripleChecker+Valid, 12558 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:28,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4643 Valid, 12558 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:28,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2023-12-21 22:06:29,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2776. [2023-12-21 22:06:29,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2776 states, 2729 states have (on average 1.770978380359106) internal successors, (4833), 2731 states have internal predecessors, (4833), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-21 22:06:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 4891 transitions. [2023-12-21 22:06:29,131 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 4891 transitions. Word has length 141 [2023-12-21 22:06:29,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:29,132 INFO L495 AbstractCegarLoop]: Abstraction has 2776 states and 4891 transitions. [2023-12-21 22:06:29,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:29,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 4891 transitions. [2023-12-21 22:06:29,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:29,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:29,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:29,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:29,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:29,339 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:29,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:29,339 INFO L85 PathProgramCache]: Analyzing trace with hash 602850365, now seen corresponding path program 1 times [2023-12-21 22:06:29,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:29,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800594796] [2023-12-21 22:06:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:29,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:29,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:29,341 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:29,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-21 22:06:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:29,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:29,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:29,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:29,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800594796] [2023-12-21 22:06:29,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800594796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:29,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:29,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:29,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355469027] [2023-12-21 22:06:29,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:29,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:29,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:29,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:29,532 INFO L87 Difference]: Start difference. First operand 2776 states and 4891 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:30,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:30,037 INFO L93 Difference]: Finished difference Result 3486 states and 5917 transitions. [2023-12-21 22:06:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:30,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:30,043 INFO L225 Difference]: With dead ends: 3486 [2023-12-21 22:06:30,044 INFO L226 Difference]: Without dead ends: 2847 [2023-12-21 22:06:30,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:30,046 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 4617 mSDsluCounter, 8332 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4635 SdHoareTripleChecker+Valid, 12551 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:30,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4635 Valid, 12551 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:30,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2023-12-21 22:06:30,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2847. [2023-12-21 22:06:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2847 states, 2797 states have (on average 1.7590275294958884) internal successors, (4920), 2799 states have internal predecessors, (4920), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-21 22:06:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 4980 transitions. [2023-12-21 22:06:30,107 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 4980 transitions. Word has length 141 [2023-12-21 22:06:30,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:30,107 INFO L495 AbstractCegarLoop]: Abstraction has 2847 states and 4980 transitions. [2023-12-21 22:06:30,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:30,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 4980 transitions. [2023-12-21 22:06:30,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:30,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:30,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:30,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:30,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:30,314 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:30,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:30,315 INFO L85 PathProgramCache]: Analyzing trace with hash 940146557, now seen corresponding path program 1 times [2023-12-21 22:06:30,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:30,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613969444] [2023-12-21 22:06:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:30,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:30,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:30,316 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:30,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-21 22:06:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:30,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:30,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:30,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:30,503 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:30,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:30,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613969444] [2023-12-21 22:06:30,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613969444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:30,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:30,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:30,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303655740] [2023-12-21 22:06:30,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:30,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:30,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:30,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:30,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:30,505 INFO L87 Difference]: Start difference. First operand 2847 states and 4980 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:30,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:30,957 INFO L93 Difference]: Finished difference Result 3628 states and 6095 transitions. [2023-12-21 22:06:30,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:30,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:30,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:30,964 INFO L225 Difference]: With dead ends: 3628 [2023-12-21 22:06:30,965 INFO L226 Difference]: Without dead ends: 2918 [2023-12-21 22:06:30,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:30,969 INFO L413 NwaCegarLoop]: 4216 mSDtfsCounter, 4610 mSDsluCounter, 8328 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4628 SdHoareTripleChecker+Valid, 12544 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:30,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4628 Valid, 12544 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2023-12-21 22:06:31,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 2918. [2023-12-21 22:06:31,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2918 states, 2865 states have (on average 1.7469458987783595) internal successors, (5005), 2867 states have internal predecessors, (5005), 31 states have call successors, (31), 20 states have call predecessors, (31), 20 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-21 22:06:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 5067 transitions. [2023-12-21 22:06:31,042 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 5067 transitions. Word has length 141 [2023-12-21 22:06:31,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:31,043 INFO L495 AbstractCegarLoop]: Abstraction has 2918 states and 5067 transitions. [2023-12-21 22:06:31,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:31,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 5067 transitions. [2023-12-21 22:06:31,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:31,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:31,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:31,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:31,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:31,252 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:31,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash -936994564, now seen corresponding path program 1 times [2023-12-21 22:06:31,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:31,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607708471] [2023-12-21 22:06:31,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:31,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:31,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:31,254 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:31,291 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 22:06:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:31,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:31,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:31,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:31,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:31,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607708471] [2023-12-21 22:06:31,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607708471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:31,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:31,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:31,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019456133] [2023-12-21 22:06:31,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:31,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:31,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:31,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:31,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:31,450 INFO L87 Difference]: Start difference. First operand 2918 states and 5067 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:31,914 INFO L93 Difference]: Finished difference Result 3770 states and 6269 transitions. [2023-12-21 22:06:31,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:31,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:31,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:31,920 INFO L225 Difference]: With dead ends: 3770 [2023-12-21 22:06:31,920 INFO L226 Difference]: Without dead ends: 2989 [2023-12-21 22:06:31,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:31,923 INFO L413 NwaCegarLoop]: 4213 mSDtfsCounter, 4603 mSDsluCounter, 8324 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4621 SdHoareTripleChecker+Valid, 12537 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:31,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4621 Valid, 12537 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:31,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2023-12-21 22:06:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2989. [2023-12-21 22:06:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2989 states, 2933 states have (on average 1.7347425843845892) internal successors, (5088), 2935 states have internal predecessors, (5088), 32 states have call successors, (32), 22 states have call predecessors, (32), 22 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-21 22:06:31,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 5152 transitions. [2023-12-21 22:06:31,992 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 5152 transitions. Word has length 141 [2023-12-21 22:06:31,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:31,992 INFO L495 AbstractCegarLoop]: Abstraction has 2989 states and 5152 transitions. [2023-12-21 22:06:31,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:31,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 5152 transitions. [2023-12-21 22:06:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:31,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:31,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:32,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:32,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:32,200 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:32,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:32,200 INFO L85 PathProgramCache]: Analyzing trace with hash 506930236, now seen corresponding path program 1 times [2023-12-21 22:06:32,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:32,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635223068] [2023-12-21 22:06:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:32,201 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:32,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:32,202 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:32,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-21 22:06:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:32,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:32,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:32,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:32,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:32,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635223068] [2023-12-21 22:06:32,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635223068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:32,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:32,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:32,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368223301] [2023-12-21 22:06:32,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:32,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:32,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:32,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:32,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:32,408 INFO L87 Difference]: Start difference. First operand 2989 states and 5152 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:32,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:32,968 INFO L93 Difference]: Finished difference Result 3912 states and 6439 transitions. [2023-12-21 22:06:32,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:32,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:32,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:32,974 INFO L225 Difference]: With dead ends: 3912 [2023-12-21 22:06:32,974 INFO L226 Difference]: Without dead ends: 3060 [2023-12-21 22:06:32,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:32,977 INFO L413 NwaCegarLoop]: 4210 mSDtfsCounter, 4596 mSDsluCounter, 8320 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 12530 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:32,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4614 Valid, 12530 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 22:06:32,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2023-12-21 22:06:33,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3060. [2023-12-21 22:06:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 3001 states have (on average 1.7224258580473175) internal successors, (5169), 3003 states have internal predecessors, (5169), 33 states have call successors, (33), 24 states have call predecessors, (33), 24 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-21 22:06:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 5235 transitions. [2023-12-21 22:06:33,051 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 5235 transitions. Word has length 141 [2023-12-21 22:06:33,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:33,051 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 5235 transitions. [2023-12-21 22:06:33,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:33,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 5235 transitions. [2023-12-21 22:06:33,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:33,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:33,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:33,061 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 22:06:33,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:33,258 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:33,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:33,259 INFO L85 PathProgramCache]: Analyzing trace with hash -854596099, now seen corresponding path program 1 times [2023-12-21 22:06:33,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:33,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856071647] [2023-12-21 22:06:33,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:33,260 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:33,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:33,261 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:33,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-21 22:06:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:33,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:33,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:33,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:33,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:33,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:33,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856071647] [2023-12-21 22:06:33,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856071647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:33,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:33,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:33,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923307144] [2023-12-21 22:06:33,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:33,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:33,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:33,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:33,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:33,508 INFO L87 Difference]: Start difference. First operand 3060 states and 5235 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:34,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:34,035 INFO L93 Difference]: Finished difference Result 4054 states and 6605 transitions. [2023-12-21 22:06:34,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:34,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:34,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:34,041 INFO L225 Difference]: With dead ends: 4054 [2023-12-21 22:06:34,041 INFO L226 Difference]: Without dead ends: 3131 [2023-12-21 22:06:34,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:34,044 INFO L413 NwaCegarLoop]: 4207 mSDtfsCounter, 4589 mSDsluCounter, 8316 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 12523 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:34,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4607 Valid, 12523 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:34,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2023-12-21 22:06:34,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3131. [2023-12-21 22:06:34,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 3069 states have (on average 1.7100032583903553) internal successors, (5248), 3071 states have internal predecessors, (5248), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 22:06:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 5316 transitions. [2023-12-21 22:06:34,129 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 5316 transitions. Word has length 141 [2023-12-21 22:06:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:34,130 INFO L495 AbstractCegarLoop]: Abstraction has 3131 states and 5316 transitions. [2023-12-21 22:06:34,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:34,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 5316 transitions. [2023-12-21 22:06:34,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:34,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:34,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:34,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:34,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:34,337 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:34,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:34,337 INFO L85 PathProgramCache]: Analyzing trace with hash 139084093, now seen corresponding path program 1 times [2023-12-21 22:06:34,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:34,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504757368] [2023-12-21 22:06:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:34,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:34,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:34,339 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:34,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 22:06:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:34,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:34,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:34,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:34,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:34,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504757368] [2023-12-21 22:06:34,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504757368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:34,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:34,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:34,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290362690] [2023-12-21 22:06:34,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:34,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:34,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:34,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:34,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:34,497 INFO L87 Difference]: Start difference. First operand 3131 states and 5316 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:34,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:34,673 INFO L93 Difference]: Finished difference Result 4188 states and 6755 transitions. [2023-12-21 22:06:34,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:34,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:34,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:34,680 INFO L225 Difference]: With dead ends: 4188 [2023-12-21 22:06:34,680 INFO L226 Difference]: Without dead ends: 3195 [2023-12-21 22:06:34,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:34,684 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 92 mSDsluCounter, 8680 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 13027 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:34,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 13027 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:34,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2023-12-21 22:06:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3133. [2023-12-21 22:06:34,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3133 states, 3071 states have (on average 1.706284597850863) internal successors, (5240), 3073 states have internal predecessors, (5240), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 22:06:34,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 5308 transitions. [2023-12-21 22:06:34,766 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 5308 transitions. Word has length 141 [2023-12-21 22:06:34,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:34,766 INFO L495 AbstractCegarLoop]: Abstraction has 3133 states and 5308 transitions. [2023-12-21 22:06:34,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:34,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 5308 transitions. [2023-12-21 22:06:34,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:34,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:34,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:34,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:34,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:34,973 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:34,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:34,973 INFO L85 PathProgramCache]: Analyzing trace with hash -744424897, now seen corresponding path program 1 times [2023-12-21 22:06:34,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:34,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787725936] [2023-12-21 22:06:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:34,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:34,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:34,974 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:34,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-21 22:06:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:35,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:35,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:35,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:35,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:35,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787725936] [2023-12-21 22:06:35,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787725936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:35,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:35,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:35,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511139921] [2023-12-21 22:06:35,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:35,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:35,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:35,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:35,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:35,128 INFO L87 Difference]: Start difference. First operand 3133 states and 5308 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:35,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:35,298 INFO L93 Difference]: Finished difference Result 4186 states and 6731 transitions. [2023-12-21 22:06:35,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:35,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:35,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:35,303 INFO L225 Difference]: With dead ends: 4186 [2023-12-21 22:06:35,304 INFO L226 Difference]: Without dead ends: 3191 [2023-12-21 22:06:35,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:35,307 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 83 mSDsluCounter, 8681 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 13028 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:35,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 13028 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:35,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2023-12-21 22:06:35,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 3135. [2023-12-21 22:06:35,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 3073 states have (on average 1.7025707777416206) internal successors, (5232), 3075 states have internal predecessors, (5232), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 22:06:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 5300 transitions. [2023-12-21 22:06:35,386 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 5300 transitions. Word has length 141 [2023-12-21 22:06:35,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:35,386 INFO L495 AbstractCegarLoop]: Abstraction has 3135 states and 5300 transitions. [2023-12-21 22:06:35,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 5300 transitions. [2023-12-21 22:06:35,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:35,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:35,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:35,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:35,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:35,592 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:35,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:35,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1739118595, now seen corresponding path program 1 times [2023-12-21 22:06:35,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:35,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476429720] [2023-12-21 22:06:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:35,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:35,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:35,595 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:35,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-21 22:06:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:35,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:35,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:35,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:35,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:35,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476429720] [2023-12-21 22:06:35,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476429720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:35,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:35,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:35,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452594790] [2023-12-21 22:06:35,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:35,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:35,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:35,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:35,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:35,729 INFO L87 Difference]: Start difference. First operand 3135 states and 5300 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:35,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:35,885 INFO L93 Difference]: Finished difference Result 4184 states and 6707 transitions. [2023-12-21 22:06:35,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:35,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:35,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:35,889 INFO L225 Difference]: With dead ends: 4184 [2023-12-21 22:06:35,889 INFO L226 Difference]: Without dead ends: 3187 [2023-12-21 22:06:35,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:35,893 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 74 mSDsluCounter, 8682 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 13029 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:35,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 13029 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:35,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2023-12-21 22:06:35,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 3137. [2023-12-21 22:06:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3137 states, 3075 states have (on average 1.6988617886178863) internal successors, (5224), 3077 states have internal predecessors, (5224), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 22:06:35,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3137 states to 3137 states and 5292 transitions. [2023-12-21 22:06:35,974 INFO L78 Accepts]: Start accepts. Automaton has 3137 states and 5292 transitions. Word has length 141 [2023-12-21 22:06:35,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:35,975 INFO L495 AbstractCegarLoop]: Abstraction has 3137 states and 5292 transitions. [2023-12-21 22:06:35,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3137 states and 5292 transitions. [2023-12-21 22:06:35,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:35,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:35,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:35,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:36,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:36,182 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:36,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:36,182 INFO L85 PathProgramCache]: Analyzing trace with hash -414262401, now seen corresponding path program 1 times [2023-12-21 22:06:36,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:36,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928923073] [2023-12-21 22:06:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:36,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:36,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:36,184 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:36,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-21 22:06:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:36,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:36,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:36,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:36,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:36,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928923073] [2023-12-21 22:06:36,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928923073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:36,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:36,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:36,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366414927] [2023-12-21 22:06:36,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:36,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:36,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:36,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:36,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:36,332 INFO L87 Difference]: Start difference. First operand 3137 states and 5292 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:36,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:36,582 INFO L93 Difference]: Finished difference Result 4182 states and 6683 transitions. [2023-12-21 22:06:36,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:36,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:36,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:36,587 INFO L225 Difference]: With dead ends: 4182 [2023-12-21 22:06:36,587 INFO L226 Difference]: Without dead ends: 3183 [2023-12-21 22:06:36,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:36,591 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 65 mSDsluCounter, 8683 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 13030 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:36,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 13030 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:36,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2023-12-21 22:06:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 3139. [2023-12-21 22:06:36,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 3077 states have (on average 1.6951576210594734) internal successors, (5216), 3079 states have internal predecessors, (5216), 34 states have call successors, (34), 26 states have call predecessors, (34), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-21 22:06:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 5284 transitions. [2023-12-21 22:06:36,681 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 5284 transitions. Word has length 141 [2023-12-21 22:06:36,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:36,683 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 5284 transitions. [2023-12-21 22:06:36,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 5284 transitions. [2023-12-21 22:06:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:36,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:36,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:36,690 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 22:06:36,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:36,890 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:36,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:36,890 INFO L85 PathProgramCache]: Analyzing trace with hash 424771261, now seen corresponding path program 1 times [2023-12-21 22:06:36,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:36,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155431919] [2023-12-21 22:06:36,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:36,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:36,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:36,892 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:36,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-21 22:06:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:37,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:06:37,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:37,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:37,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:37,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155431919] [2023-12-21 22:06:37,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155431919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:37,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:37,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 22:06:37,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865204528] [2023-12-21 22:06:37,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:37,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:06:37,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:37,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:06:37,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:37,093 INFO L87 Difference]: Start difference. First operand 3139 states and 5284 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:37,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:37,268 INFO L93 Difference]: Finished difference Result 5055 states and 7781 transitions. [2023-12-21 22:06:37,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:06:37,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:37,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:37,274 INFO L225 Difference]: With dead ends: 5055 [2023-12-21 22:06:37,274 INFO L226 Difference]: Without dead ends: 4054 [2023-12-21 22:06:37,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:37,276 INFO L413 NwaCegarLoop]: 4396 mSDtfsCounter, 4304 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4304 SdHoareTripleChecker+Valid, 4751 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:37,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4304 Valid, 4751 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:37,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4054 states. [2023-12-21 22:06:37,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4054 to 4051. [2023-12-21 22:06:37,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4051 states, 3937 states have (on average 1.6065532131064262) internal successors, (6325), 3939 states have internal predecessors, (6325), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 22:06:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4051 states to 4051 states and 6449 transitions. [2023-12-21 22:06:37,402 INFO L78 Accepts]: Start accepts. Automaton has 4051 states and 6449 transitions. Word has length 141 [2023-12-21 22:06:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:37,402 INFO L495 AbstractCegarLoop]: Abstraction has 4051 states and 6449 transitions. [2023-12-21 22:06:37,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4051 states and 6449 transitions. [2023-12-21 22:06:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:37,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:37,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:37,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:37,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:37,608 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:37,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:37,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1530549954, now seen corresponding path program 1 times [2023-12-21 22:06:37,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:37,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196080164] [2023-12-21 22:06:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:37,610 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:37,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:37,611 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:37,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-21 22:06:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:37,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:37,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:37,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:37,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:37,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196080164] [2023-12-21 22:06:37,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196080164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:37,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:37,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:37,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436425293] [2023-12-21 22:06:37,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:37,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:37,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:37,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:37,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:37,765 INFO L87 Difference]: Start difference. First operand 4051 states and 6449 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:37,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:37,939 INFO L93 Difference]: Finished difference Result 6338 states and 9459 transitions. [2023-12-21 22:06:37,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:37,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:37,946 INFO L225 Difference]: With dead ends: 6338 [2023-12-21 22:06:37,946 INFO L226 Difference]: Without dead ends: 4425 [2023-12-21 22:06:37,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:37,950 INFO L413 NwaCegarLoop]: 4350 mSDtfsCounter, 47 mSDsluCounter, 8694 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 13044 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:37,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 13044 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:37,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2023-12-21 22:06:38,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4073. [2023-12-21 22:06:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4073 states, 3959 states have (on average 1.600656731497853) internal successors, (6337), 3961 states have internal predecessors, (6337), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 22:06:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 6461 transitions. [2023-12-21 22:06:38,070 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 6461 transitions. Word has length 141 [2023-12-21 22:06:38,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:38,071 INFO L495 AbstractCegarLoop]: Abstraction has 4073 states and 6461 transitions. [2023-12-21 22:06:38,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:38,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 6461 transitions. [2023-12-21 22:06:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:38,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:38,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:38,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-21 22:06:38,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:38,277 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:38,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash -576609796, now seen corresponding path program 1 times [2023-12-21 22:06:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:38,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116816796] [2023-12-21 22:06:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:38,278 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:38,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:38,279 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:38,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-21 22:06:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:38,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:38,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:38,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:38,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:38,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:38,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116816796] [2023-12-21 22:06:38,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116816796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:38,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:38,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:38,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911837035] [2023-12-21 22:06:38,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:38,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:38,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:38,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:38,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:38,426 INFO L87 Difference]: Start difference. First operand 4073 states and 6461 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:38,660 INFO L93 Difference]: Finished difference Result 6036 states and 9018 transitions. [2023-12-21 22:06:38,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:38,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:38,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:38,665 INFO L225 Difference]: With dead ends: 6036 [2023-12-21 22:06:38,665 INFO L226 Difference]: Without dead ends: 4101 [2023-12-21 22:06:38,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:38,668 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 38 mSDsluCounter, 8685 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 13032 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:38,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 13032 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:38,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4101 states. [2023-12-21 22:06:38,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4101 to 4075. [2023-12-21 22:06:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 3961 states have (on average 1.5953042161070436) internal successors, (6319), 3963 states have internal predecessors, (6319), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 22:06:38,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6443 transitions. [2023-12-21 22:06:38,791 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6443 transitions. Word has length 141 [2023-12-21 22:06:38,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:38,792 INFO L495 AbstractCegarLoop]: Abstraction has 4075 states and 6443 transitions. [2023-12-21 22:06:38,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:38,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6443 transitions. [2023-12-21 22:06:38,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:38,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:38,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:38,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:38,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:38,994 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:38,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:38,995 INFO L85 PathProgramCache]: Analyzing trace with hash -994006402, now seen corresponding path program 1 times [2023-12-21 22:06:38,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:38,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335126742] [2023-12-21 22:06:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:38,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:38,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:38,996 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:38,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-21 22:06:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:39,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:39,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:39,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:39,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:39,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:39,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335126742] [2023-12-21 22:06:39,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335126742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:39,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:39,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:39,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60214446] [2023-12-21 22:06:39,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:39,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:39,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:39,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:39,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:39,127 INFO L87 Difference]: Start difference. First operand 4075 states and 6443 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:39,289 INFO L93 Difference]: Finished difference Result 6056 states and 9003 transitions. [2023-12-21 22:06:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:39,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:39,294 INFO L225 Difference]: With dead ends: 6056 [2023-12-21 22:06:39,294 INFO L226 Difference]: Without dead ends: 4119 [2023-12-21 22:06:39,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:39,297 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 29 mSDsluCounter, 8686 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 13033 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:39,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 13033 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2023-12-21 22:06:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 4079. [2023-12-21 22:06:39,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4079 states, 3965 states have (on average 1.5899117276166457) internal successors, (6304), 3967 states have internal predecessors, (6304), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 22:06:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4079 states to 4079 states and 6428 transitions. [2023-12-21 22:06:39,411 INFO L78 Accepts]: Start accepts. Automaton has 4079 states and 6428 transitions. Word has length 141 [2023-12-21 22:06:39,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:39,411 INFO L495 AbstractCegarLoop]: Abstraction has 4079 states and 6428 transitions. [2023-12-21 22:06:39,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:39,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4079 states and 6428 transitions. [2023-12-21 22:06:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:39,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:39,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:39,417 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 22:06:39,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:39,617 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:39,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:39,618 INFO L85 PathProgramCache]: Analyzing trace with hash -560277316, now seen corresponding path program 1 times [2023-12-21 22:06:39,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:39,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466400906] [2023-12-21 22:06:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:39,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:39,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:39,620 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:39,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-21 22:06:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:39,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:39,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:39,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:39,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466400906] [2023-12-21 22:06:39,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466400906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:39,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:39,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:39,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318654716] [2023-12-21 22:06:39,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:39,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:39,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:39,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:39,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:39,749 INFO L87 Difference]: Start difference. First operand 4079 states and 6428 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:39,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:39,898 INFO L93 Difference]: Finished difference Result 6052 states and 8957 transitions. [2023-12-21 22:06:39,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:39,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:39,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:39,903 INFO L225 Difference]: With dead ends: 6052 [2023-12-21 22:06:39,903 INFO L226 Difference]: Without dead ends: 4111 [2023-12-21 22:06:39,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:39,907 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 20 mSDsluCounter, 8687 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 13034 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:39,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 13034 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2023-12-21 22:06:39,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 4083. [2023-12-21 22:06:40,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4083 states, 3969 states have (on average 1.5845301083396321) internal successors, (6289), 3971 states have internal predecessors, (6289), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 22:06:40,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 6413 transitions. [2023-12-21 22:06:40,009 INFO L78 Accepts]: Start accepts. Automaton has 4083 states and 6413 transitions. Word has length 141 [2023-12-21 22:06:40,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:40,009 INFO L495 AbstractCegarLoop]: Abstraction has 4083 states and 6413 transitions. [2023-12-21 22:06:40,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:40,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4083 states and 6413 transitions. [2023-12-21 22:06:40,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:40,010 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:40,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:40,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-12-21 22:06:40,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:40,215 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:40,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:40,216 INFO L85 PathProgramCache]: Analyzing trace with hash -116376642, now seen corresponding path program 1 times [2023-12-21 22:06:40,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:40,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998078726] [2023-12-21 22:06:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:40,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:40,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:40,217 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:40,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-21 22:06:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:40,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:40,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:40,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:40,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:40,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998078726] [2023-12-21 22:06:40,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998078726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:40,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:40,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:40,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208418536] [2023-12-21 22:06:40,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:40,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:40,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:40,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:40,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:40,343 INFO L87 Difference]: Start difference. First operand 4083 states and 6413 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:40,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:40,597 INFO L93 Difference]: Finished difference Result 6048 states and 8911 transitions. [2023-12-21 22:06:40,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:40,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:40,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:40,603 INFO L225 Difference]: With dead ends: 6048 [2023-12-21 22:06:40,604 INFO L226 Difference]: Without dead ends: 4103 [2023-12-21 22:06:40,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:40,607 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 11 mSDsluCounter, 8688 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 13035 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:40,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 13035 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 22:06:40,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2023-12-21 22:06:40,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 4087. [2023-12-21 22:06:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4087 states, 3973 states have (on average 1.5791593254467657) internal successors, (6274), 3975 states have internal predecessors, (6274), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 22:06:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4087 states to 4087 states and 6398 transitions. [2023-12-21 22:06:40,716 INFO L78 Accepts]: Start accepts. Automaton has 4087 states and 6398 transitions. Word has length 141 [2023-12-21 22:06:40,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:40,717 INFO L495 AbstractCegarLoop]: Abstraction has 4087 states and 6398 transitions. [2023-12-21 22:06:40,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:40,717 INFO L276 IsEmpty]: Start isEmpty. Operand 4087 states and 6398 transitions. [2023-12-21 22:06:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:40,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:40,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:40,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:40,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:40,924 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:40,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:40,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1822785404, now seen corresponding path program 1 times [2023-12-21 22:06:40,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:40,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115734659] [2023-12-21 22:06:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:40,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:40,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:40,926 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:40,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-21 22:06:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:41,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 22:06:41,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:41,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:41,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:41,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115734659] [2023-12-21 22:06:41,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115734659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:41,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:41,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:41,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738447784] [2023-12-21 22:06:41,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:41,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:41,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:41,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:41,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:41,078 INFO L87 Difference]: Start difference. First operand 4087 states and 6398 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:41,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:41,237 INFO L93 Difference]: Finished difference Result 6044 states and 8865 transitions. [2023-12-21 22:06:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:41,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:41,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:41,243 INFO L225 Difference]: With dead ends: 6044 [2023-12-21 22:06:41,243 INFO L226 Difference]: Without dead ends: 4095 [2023-12-21 22:06:41,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:41,246 INFO L413 NwaCegarLoop]: 4347 mSDtfsCounter, 2 mSDsluCounter, 8689 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13036 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:41,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13036 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:41,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2023-12-21 22:06:41,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 4091. [2023-12-21 22:06:41,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4091 states, 3977 states have (on average 1.573799346240885) internal successors, (6259), 3979 states have internal predecessors, (6259), 62 states have call successors, (62), 50 states have call predecessors, (62), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 22:06:41,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4091 states to 4091 states and 6383 transitions. [2023-12-21 22:06:41,333 INFO L78 Accepts]: Start accepts. Automaton has 4091 states and 6383 transitions. Word has length 141 [2023-12-21 22:06:41,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:41,333 INFO L495 AbstractCegarLoop]: Abstraction has 4091 states and 6383 transitions. [2023-12-21 22:06:41,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4091 states and 6383 transitions. [2023-12-21 22:06:41,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:41,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:41,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:41,343 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 22:06:41,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:41,540 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:41,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:41,540 INFO L85 PathProgramCache]: Analyzing trace with hash 925392126, now seen corresponding path program 1 times [2023-12-21 22:06:41,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:41,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516770206] [2023-12-21 22:06:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:41,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:41,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:41,542 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:41,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-21 22:06:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:41,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 22:06:41,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:41,794 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:41,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:41,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516770206] [2023-12-21 22:06:41,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516770206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:41,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:41,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:41,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454438628] [2023-12-21 22:06:41,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:41,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:41,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:41,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:41,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:41,796 INFO L87 Difference]: Start difference. First operand 4091 states and 6383 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:42,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:42,607 INFO L93 Difference]: Finished difference Result 8083 states and 11269 transitions. [2023-12-21 22:06:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 22:06:42,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:42,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:42,614 INFO L225 Difference]: With dead ends: 8083 [2023-12-21 22:06:42,615 INFO L226 Difference]: Without dead ends: 6129 [2023-12-21 22:06:42,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 22:06:42,617 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 4613 mSDsluCounter, 8590 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4630 SdHoareTripleChecker+Valid, 12826 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:42,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4630 Valid, 12826 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 22:06:42,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6129 states. [2023-12-21 22:06:42,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6129 to 6081. [2023-12-21 22:06:42,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6081 states, 5859 states have (on average 1.4632189793480117) internal successors, (8573), 5863 states have internal predecessors, (8573), 118 states have call successors, (118), 100 states have call predecessors, (118), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-21 22:06:42,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 8811 transitions. [2023-12-21 22:06:42,760 INFO L78 Accepts]: Start accepts. Automaton has 6081 states and 8811 transitions. Word has length 141 [2023-12-21 22:06:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:42,761 INFO L495 AbstractCegarLoop]: Abstraction has 6081 states and 8811 transitions. [2023-12-21 22:06:42,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:42,761 INFO L276 IsEmpty]: Start isEmpty. Operand 6081 states and 8811 transitions. [2023-12-21 22:06:42,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:42,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:42,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:42,766 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 (33)] Ended with exit code 0 [2023-12-21 22:06:42,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:42,962 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:42,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:42,963 INFO L85 PathProgramCache]: Analyzing trace with hash -919975040, now seen corresponding path program 1 times [2023-12-21 22:06:42,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:42,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851855728] [2023-12-21 22:06:42,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:42,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:42,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:42,964 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:42,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-21 22:06:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:43,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 22:06:43,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:43,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:43,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:43,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851855728] [2023-12-21 22:06:43,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851855728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:43,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:43,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:43,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268937132] [2023-12-21 22:06:43,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:43,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:43,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:43,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:43,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:43,214 INFO L87 Difference]: Start difference. First operand 6081 states and 8811 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:43,751 INFO L93 Difference]: Finished difference Result 10025 states and 13648 transitions. [2023-12-21 22:06:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 22:06:43,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:43,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:43,763 INFO L225 Difference]: With dead ends: 10025 [2023-12-21 22:06:43,763 INFO L226 Difference]: Without dead ends: 6081 [2023-12-21 22:06:43,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 22:06:43,770 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4429 mSDsluCounter, 8312 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 12515 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:43,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4446 Valid, 12515 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 22:06:43,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2023-12-21 22:06:44,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 6081. [2023-12-21 22:06:44,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6081 states, 5859 states have (on average 1.4608294930875576) internal successors, (8559), 5863 states have internal predecessors, (8559), 118 states have call successors, (118), 100 states have call predecessors, (118), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-21 22:06:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 8797 transitions. [2023-12-21 22:06:44,047 INFO L78 Accepts]: Start accepts. Automaton has 6081 states and 8797 transitions. Word has length 141 [2023-12-21 22:06:44,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:44,048 INFO L495 AbstractCegarLoop]: Abstraction has 6081 states and 8797 transitions. [2023-12-21 22:06:44,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:44,048 INFO L276 IsEmpty]: Start isEmpty. Operand 6081 states and 8797 transitions. [2023-12-21 22:06:44,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:44,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:44,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:44,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:44,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:44,257 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:44,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:44,257 INFO L85 PathProgramCache]: Analyzing trace with hash -218375166, now seen corresponding path program 1 times [2023-12-21 22:06:44,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:44,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420303931] [2023-12-21 22:06:44,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:44,257 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:44,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:44,258 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:44,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-21 22:06:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:44,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 22:06:44,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:44,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:44,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:44,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420303931] [2023-12-21 22:06:44,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420303931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:44,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:44,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:44,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376601676] [2023-12-21 22:06:44,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:44,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 22:06:44,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:44,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 22:06:44,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:44,519 INFO L87 Difference]: Start difference. First operand 6081 states and 8797 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:45,143 INFO L93 Difference]: Finished difference Result 10323 states and 13995 transitions. [2023-12-21 22:06:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 22:06:45,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-21 22:06:45,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:45,155 INFO L225 Difference]: With dead ends: 10323 [2023-12-21 22:06:45,156 INFO L226 Difference]: Without dead ends: 6379 [2023-12-21 22:06:45,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 22:06:45,165 INFO L413 NwaCegarLoop]: 4202 mSDtfsCounter, 4532 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4549 SdHoareTripleChecker+Valid, 12510 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:45,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4549 Valid, 12510 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:45,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6379 states. [2023-12-21 22:06:45,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6379 to 6311. [2023-12-21 22:06:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6311 states, 6085 states have (on average 1.4423993426458503) internal successors, (8777), 6089 states have internal predecessors, (8777), 118 states have call successors, (118), 104 states have call predecessors, (118), 106 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2023-12-21 22:06:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6311 states to 6311 states and 9015 transitions. [2023-12-21 22:06:45,394 INFO L78 Accepts]: Start accepts. Automaton has 6311 states and 9015 transitions. Word has length 141 [2023-12-21 22:06:45,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:45,394 INFO L495 AbstractCegarLoop]: Abstraction has 6311 states and 9015 transitions. [2023-12-21 22:06:45,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 22:06:45,394 INFO L276 IsEmpty]: Start isEmpty. Operand 6311 states and 9015 transitions. [2023-12-21 22:06:45,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 22:06:45,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:45,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:45,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:45,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:45,596 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:45,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:45,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2023813500, now seen corresponding path program 1 times [2023-12-21 22:06:45,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:45,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750286842] [2023-12-21 22:06:45,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:45,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:45,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:45,598 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:45,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-21 22:06:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:45,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:06:45,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 22:06:45,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:45,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:45,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750286842] [2023-12-21 22:06:45,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750286842] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:45,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:45,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 22:06:45,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148347609] [2023-12-21 22:06:45,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:45,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:06:45,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:45,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:06:45,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:45,838 INFO L87 Difference]: Start difference. First operand 6311 states and 9015 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 22:06:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:46,329 INFO L93 Difference]: Finished difference Result 14588 states and 19075 transitions. [2023-12-21 22:06:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:06:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 141 [2023-12-21 22:06:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:46,347 INFO L225 Difference]: With dead ends: 14588 [2023-12-21 22:06:46,347 INFO L226 Difference]: Without dead ends: 10415 [2023-12-21 22:06:46,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:46,359 INFO L413 NwaCegarLoop]: 4340 mSDtfsCounter, 4231 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4231 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:46,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4231 Valid, 4687 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 22:06:46,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10415 states. [2023-12-21 22:06:46,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10415 to 10411. [2023-12-21 22:06:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10411 states, 9965 states have (on average 1.3482187656798796) internal successors, (13435), 9975 states have internal predecessors, (13435), 232 states have call successors, (232), 208 states have call predecessors, (232), 212 states have return successors, (236), 228 states have call predecessors, (236), 232 states have call successors, (236) [2023-12-21 22:06:46,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10411 states to 10411 states and 13903 transitions. [2023-12-21 22:06:46,679 INFO L78 Accepts]: Start accepts. Automaton has 10411 states and 13903 transitions. Word has length 141 [2023-12-21 22:06:46,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:46,679 INFO L495 AbstractCegarLoop]: Abstraction has 10411 states and 13903 transitions. [2023-12-21 22:06:46,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 22:06:46,679 INFO L276 IsEmpty]: Start isEmpty. Operand 10411 states and 13903 transitions. [2023-12-21 22:06:46,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-21 22:06:46,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:46,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:46,688 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 (36)] Ended with exit code 0 [2023-12-21 22:06:46,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:46,886 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:46,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:46,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1772756800, now seen corresponding path program 1 times [2023-12-21 22:06:46,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:46,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914519411] [2023-12-21 22:06:46,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:46,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:46,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:46,888 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:46,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-12-21 22:06:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:47,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:06:47,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 22:06:47,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:47,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:47,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914519411] [2023-12-21 22:06:47,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914519411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:47,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:47,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:47,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097727729] [2023-12-21 22:06:47,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:47,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:47,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:47,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:47,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:47,343 INFO L87 Difference]: Start difference. First operand 10411 states and 13903 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:06:48,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:48,466 INFO L93 Difference]: Finished difference Result 26724 states and 33433 transitions. [2023-12-21 22:06:48,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:48,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 227 [2023-12-21 22:06:48,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:48,500 INFO L225 Difference]: With dead ends: 26724 [2023-12-21 22:06:48,500 INFO L226 Difference]: Without dead ends: 18452 [2023-12-21 22:06:48,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:48,509 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 4505 mSDsluCounter, 4590 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4509 SdHoareTripleChecker+Valid, 9019 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:48,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4509 Valid, 9019 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:48,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18452 states. [2023-12-21 22:06:49,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18452 to 18450. [2023-12-21 22:06:49,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18450 states, 17577 states have (on average 1.2821869488536155) internal successors, (22537), 17604 states have internal predecessors, (22537), 447 states have call successors, (447), 400 states have call predecessors, (447), 424 states have return successors, (495), 447 states have call predecessors, (495), 447 states have call successors, (495) [2023-12-21 22:06:49,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18450 states to 18450 states and 23479 transitions. [2023-12-21 22:06:49,233 INFO L78 Accepts]: Start accepts. Automaton has 18450 states and 23479 transitions. Word has length 227 [2023-12-21 22:06:49,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:49,234 INFO L495 AbstractCegarLoop]: Abstraction has 18450 states and 23479 transitions. [2023-12-21 22:06:49,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:06:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 18450 states and 23479 transitions. [2023-12-21 22:06:49,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-21 22:06:49,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:49,245 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:49,250 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 (37)] Ended with exit code 0 [2023-12-21 22:06:49,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:49,450 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:49,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:49,450 INFO L85 PathProgramCache]: Analyzing trace with hash 746135422, now seen corresponding path program 1 times [2023-12-21 22:06:49,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:49,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127034708] [2023-12-21 22:06:49,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:49,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:49,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:49,452 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:49,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-12-21 22:06:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:49,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:06:49,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 22:06:49,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:49,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127034708] [2023-12-21 22:06:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127034708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:49,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:49,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:06:49,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550847433] [2023-12-21 22:06:49,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:49,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:06:49,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:49,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:06:49,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:49,641 INFO L87 Difference]: Start difference. First operand 18450 states and 23479 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 22:06:50,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:50,348 INFO L93 Difference]: Finished difference Result 34748 states and 42944 transitions. [2023-12-21 22:06:50,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:06:50,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 227 [2023-12-21 22:06:50,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:50,376 INFO L225 Difference]: With dead ends: 34748 [2023-12-21 22:06:50,376 INFO L226 Difference]: Without dead ends: 18437 [2023-12-21 22:06:50,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:50,386 INFO L413 NwaCegarLoop]: 4340 mSDtfsCounter, 415 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 8297 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:50,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 8297 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:06:50,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18437 states. [2023-12-21 22:06:51,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18437 to 18437. [2023-12-21 22:06:51,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18437 states, 17567 states have (on average 1.2818352592929925) internal successors, (22518), 17593 states have internal predecessors, (22518), 444 states have call successors, (444), 400 states have call predecessors, (444), 424 states have return successors, (492), 444 states have call predecessors, (492), 444 states have call successors, (492) [2023-12-21 22:06:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18437 states to 18437 states and 23454 transitions. [2023-12-21 22:06:51,079 INFO L78 Accepts]: Start accepts. Automaton has 18437 states and 23454 transitions. Word has length 227 [2023-12-21 22:06:51,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:51,080 INFO L495 AbstractCegarLoop]: Abstraction has 18437 states and 23454 transitions. [2023-12-21 22:06:51,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 22:06:51,080 INFO L276 IsEmpty]: Start isEmpty. Operand 18437 states and 23454 transitions. [2023-12-21 22:06:51,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-21 22:06:51,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:51,090 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:51,096 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 (38)] Ended with exit code 0 [2023-12-21 22:06:51,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:51,296 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:51,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:51,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1623009787, now seen corresponding path program 1 times [2023-12-21 22:06:51,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:51,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335057841] [2023-12-21 22:06:51,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:51,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:51,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:51,298 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:51,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-12-21 22:06:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:51,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:06:51,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 22:06:51,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:51,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:51,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335057841] [2023-12-21 22:06:51,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335057841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:51,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:51,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:51,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219258978] [2023-12-21 22:06:51,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:51,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:51,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:51,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:51,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:51,698 INFO L87 Difference]: Start difference. First operand 18437 states and 23454 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:06:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:53,306 INFO L93 Difference]: Finished difference Result 50129 states and 61286 transitions. [2023-12-21 22:06:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:06:53,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 229 [2023-12-21 22:06:53,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:53,353 INFO L225 Difference]: With dead ends: 50129 [2023-12-21 22:06:53,354 INFO L226 Difference]: Without dead ends: 33831 [2023-12-21 22:06:53,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:06:53,369 INFO L413 NwaCegarLoop]: 4412 mSDtfsCounter, 4500 mSDsluCounter, 4572 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4505 SdHoareTripleChecker+Valid, 8984 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:53,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4505 Valid, 8984 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:06:53,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33831 states. [2023-12-21 22:06:54,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33831 to 33829. [2023-12-21 22:06:54,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33829 states, 32140 states have (on average 1.242252644679527) internal successors, (39926), 32199 states have internal predecessors, (39926), 855 states have call successors, (855), 768 states have call predecessors, (855), 832 states have return successors, (991), 863 states have call predecessors, (991), 855 states have call successors, (991) [2023-12-21 22:06:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33829 states to 33829 states and 41772 transitions. [2023-12-21 22:06:54,650 INFO L78 Accepts]: Start accepts. Automaton has 33829 states and 41772 transitions. Word has length 229 [2023-12-21 22:06:54,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:54,651 INFO L495 AbstractCegarLoop]: Abstraction has 33829 states and 41772 transitions. [2023-12-21 22:06:54,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:06:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 33829 states and 41772 transitions. [2023-12-21 22:06:54,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-21 22:06:54,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:54,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:54,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-12-21 22:06:54,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:54,873 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:54,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:54,873 INFO L85 PathProgramCache]: Analyzing trace with hash -846762233, now seen corresponding path program 1 times [2023-12-21 22:06:54,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:54,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190621576] [2023-12-21 22:06:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:54,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:54,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:54,875 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:54,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-12-21 22:06:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:55,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:06:55,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 22:06:55,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:55,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:55,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190621576] [2023-12-21 22:06:55,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190621576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:55,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:55,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:06:55,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898963433] [2023-12-21 22:06:55,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:55,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:06:55,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:55,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:06:55,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:55,036 INFO L87 Difference]: Start difference. First operand 33829 states and 41772 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 22:06:56,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:06:56,328 INFO L93 Difference]: Finished difference Result 65507 states and 79533 transitions. [2023-12-21 22:06:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:06:56,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 229 [2023-12-21 22:06:56,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:06:56,393 INFO L225 Difference]: With dead ends: 65507 [2023-12-21 22:06:56,393 INFO L226 Difference]: Without dead ends: 33817 [2023-12-21 22:06:56,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:06:56,418 INFO L413 NwaCegarLoop]: 4339 mSDtfsCounter, 413 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 8296 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:06:56,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 8296 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:06:56,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33817 states. [2023-12-21 22:06:58,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33817 to 33817. [2023-12-21 22:06:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33817 states, 32131 states have (on average 1.242071519716162) internal successors, (39909), 32189 states have internal predecessors, (39909), 852 states have call successors, (852), 768 states have call predecessors, (852), 832 states have return successors, (988), 860 states have call predecessors, (988), 852 states have call successors, (988) [2023-12-21 22:06:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33817 states to 33817 states and 41749 transitions. [2023-12-21 22:06:58,205 INFO L78 Accepts]: Start accepts. Automaton has 33817 states and 41749 transitions. Word has length 229 [2023-12-21 22:06:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:06:58,205 INFO L495 AbstractCegarLoop]: Abstraction has 33817 states and 41749 transitions. [2023-12-21 22:06:58,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 22:06:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 33817 states and 41749 transitions. [2023-12-21 22:06:58,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-21 22:06:58,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:06:58,217 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:06:58,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-12-21 22:06:58,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:58,417 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:06:58,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:06:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1380077312, now seen corresponding path program 1 times [2023-12-21 22:06:58,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:06:58,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426935635] [2023-12-21 22:06:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:06:58,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:06:58,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:06:58,419 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:06:58,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-12-21 22:06:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:06:58,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:06:58,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:06:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 22:06:58,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:06:58,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:06:58,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426935635] [2023-12-21 22:06:58,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426935635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:06:58,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:06:58,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:06:58,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836250075] [2023-12-21 22:06:58,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:06:58,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:06:58,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:06:58,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:06:58,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:06:58,785 INFO L87 Difference]: Start difference. First operand 33817 states and 41749 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:07:01,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:07:01,834 INFO L93 Difference]: Finished difference Result 95392 states and 115131 transitions. [2023-12-21 22:07:01,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:07:01,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 231 [2023-12-21 22:07:01,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:07:01,932 INFO L225 Difference]: With dead ends: 95392 [2023-12-21 22:07:01,933 INFO L226 Difference]: Without dead ends: 63714 [2023-12-21 22:07:01,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:07:01,952 INFO L413 NwaCegarLoop]: 4398 mSDtfsCounter, 4493 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4499 SdHoareTripleChecker+Valid, 8952 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:07:01,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4499 Valid, 8952 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:07:01,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63714 states. [2023-12-21 22:07:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63714 to 63712. [2023-12-21 22:07:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63712 states, 60439 states have (on average 1.2193947616605172) internal successors, (73699), 60570 states have internal predecessors, (73699), 1639 states have call successors, (1639), 1472 states have call predecessors, (1639), 1632 states have return successors, (1967), 1671 states have call predecessors, (1967), 1639 states have call successors, (1967) [2023-12-21 22:07:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63712 states to 63712 states and 77305 transitions. [2023-12-21 22:07:04,841 INFO L78 Accepts]: Start accepts. Automaton has 63712 states and 77305 transitions. Word has length 231 [2023-12-21 22:07:04,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:07:04,842 INFO L495 AbstractCegarLoop]: Abstraction has 63712 states and 77305 transitions. [2023-12-21 22:07:04,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:07:04,842 INFO L276 IsEmpty]: Start isEmpty. Operand 63712 states and 77305 transitions. [2023-12-21 22:07:04,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-12-21 22:07:04,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:07:04,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:07:04,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2023-12-21 22:07:05,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:07:05,069 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:07:05,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:07:05,069 INFO L85 PathProgramCache]: Analyzing trace with hash -326052290, now seen corresponding path program 1 times [2023-12-21 22:07:05,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:07:05,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962991212] [2023-12-21 22:07:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:07:05,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:07:05,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:07:05,189 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:07:05,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-12-21 22:07:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:07:05,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:07:05,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:07:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 22:07:05,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:07:05,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:07:05,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962991212] [2023-12-21 22:07:05,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962991212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:07:05,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:07:05,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:07:05,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701376168] [2023-12-21 22:07:05,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:07:05,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:07:05,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:07:05,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:07:05,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:07:05,357 INFO L87 Difference]: Start difference. First operand 63712 states and 77305 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 22:07:07,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:07:07,814 INFO L93 Difference]: Finished difference Result 125274 states and 150602 transitions. [2023-12-21 22:07:07,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:07:07,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 231 [2023-12-21 22:07:07,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:07:07,929 INFO L225 Difference]: With dead ends: 125274 [2023-12-21 22:07:07,929 INFO L226 Difference]: Without dead ends: 63701 [2023-12-21 22:07:07,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:07:07,981 INFO L413 NwaCegarLoop]: 4338 mSDtfsCounter, 411 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 8295 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:07:07,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 8295 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:07:08,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63701 states. [2023-12-21 22:07:10,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63701 to 63701. [2023-12-21 22:07:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63701 states, 60431 states have (on average 1.2193079710744485) internal successors, (73684), 60561 states have internal predecessors, (73684), 1636 states have call successors, (1636), 1472 states have call predecessors, (1636), 1632 states have return successors, (1964), 1668 states have call predecessors, (1964), 1636 states have call successors, (1964) [2023-12-21 22:07:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63701 states to 63701 states and 77284 transitions. [2023-12-21 22:07:10,994 INFO L78 Accepts]: Start accepts. Automaton has 63701 states and 77284 transitions. Word has length 231 [2023-12-21 22:07:10,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:07:10,994 INFO L495 AbstractCegarLoop]: Abstraction has 63701 states and 77284 transitions. [2023-12-21 22:07:10,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 22:07:10,994 INFO L276 IsEmpty]: Start isEmpty. Operand 63701 states and 77284 transitions. [2023-12-21 22:07:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-21 22:07:11,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:07:11,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:07:11,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-12-21 22:07:11,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:07:11,216 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:07:11,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:07:11,217 INFO L85 PathProgramCache]: Analyzing trace with hash 462798213, now seen corresponding path program 1 times [2023-12-21 22:07:11,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:07:11,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377930121] [2023-12-21 22:07:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:07:11,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:07:11,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:07:11,218 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:07:11,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-12-21 22:07:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:07:11,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:07:11,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:07:11,597 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 22:07:11,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:07:11,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:07:11,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377930121] [2023-12-21 22:07:11,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377930121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:07:11,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:07:11,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:07:11,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289609133] [2023-12-21 22:07:11,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:07:11,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:07:11,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:07:11,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:07:11,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:07:11,599 INFO L87 Difference]: Start difference. First operand 63701 states and 77284 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:07:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:07:16,733 INFO L93 Difference]: Finished difference Result 210259 states and 250921 transitions. [2023-12-21 22:07:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 22:07:16,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 233 [2023-12-21 22:07:16,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:07:17,018 INFO L225 Difference]: With dead ends: 210259 [2023-12-21 22:07:17,018 INFO L226 Difference]: Without dead ends: 148697 [2023-12-21 22:07:17,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 22:07:17,084 INFO L413 NwaCegarLoop]: 4408 mSDtfsCounter, 4498 mSDsluCounter, 4548 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4504 SdHoareTripleChecker+Valid, 8956 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 22:07:17,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4504 Valid, 8956 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 22:07:17,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148697 states. [2023-12-21 22:07:22,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148697 to 145975. [2023-12-21 22:07:22,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145975 states, 138478 states have (on average 1.2000173312728375) internal successors, (166176), 139377 states have internal predecessors, (166176), 3143 states have call successors, (3143), 2816 states have call predecessors, (3143), 4352 states have return successors, (5072), 3783 states have call predecessors, (5072), 3143 states have call successors, (5072) [2023-12-21 22:07:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145975 states to 145975 states and 174391 transitions. [2023-12-21 22:07:23,001 INFO L78 Accepts]: Start accepts. Automaton has 145975 states and 174391 transitions. Word has length 233 [2023-12-21 22:07:23,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:07:23,002 INFO L495 AbstractCegarLoop]: Abstraction has 145975 states and 174391 transitions. [2023-12-21 22:07:23,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 22:07:23,002 INFO L276 IsEmpty]: Start isEmpty. Operand 145975 states and 174391 transitions. [2023-12-21 22:07:23,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-21 22:07:23,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:07:23,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:07:23,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2023-12-21 22:07:23,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:07:23,526 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:07:23,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:07:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash -887611897, now seen corresponding path program 1 times [2023-12-21 22:07:23,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:07:23,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450406649] [2023-12-21 22:07:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:07:23,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:07:23,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:07:23,528 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:07:23,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-12-21 22:07:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:07:23,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 22:07:23,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:07:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 22:07:23,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:07:23,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:07:23,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450406649] [2023-12-21 22:07:23,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450406649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:07:23,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:07:23,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 22:07:23,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882746765] [2023-12-21 22:07:23,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:07:23,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 22:07:23,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:07:23,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 22:07:23,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:07:23,693 INFO L87 Difference]: Start difference. First operand 145975 states and 174391 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 22:07:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 22:07:28,793 INFO L93 Difference]: Finished difference Result 289802 states and 344778 transitions. [2023-12-21 22:07:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 22:07:28,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 233 [2023-12-21 22:07:28,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 22:07:29,072 INFO L225 Difference]: With dead ends: 289802 [2023-12-21 22:07:29,072 INFO L226 Difference]: Without dead ends: 145965 [2023-12-21 22:07:29,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 22:07:29,310 INFO L413 NwaCegarLoop]: 4337 mSDtfsCounter, 409 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 8294 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 22:07:29,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 8294 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 22:07:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145965 states. [2023-12-21 22:07:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145965 to 145965. [2023-12-21 22:07:34,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145965 states, 138471 states have (on average 1.1999841121967776) internal successors, (166163), 139369 states have internal predecessors, (166163), 3140 states have call successors, (3140), 2816 states have call predecessors, (3140), 4352 states have return successors, (5068), 3780 states have call predecessors, (5068), 3140 states have call successors, (5068) [2023-12-21 22:07:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145965 states to 145965 states and 174371 transitions. [2023-12-21 22:07:34,960 INFO L78 Accepts]: Start accepts. Automaton has 145965 states and 174371 transitions. Word has length 233 [2023-12-21 22:07:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 22:07:34,960 INFO L495 AbstractCegarLoop]: Abstraction has 145965 states and 174371 transitions. [2023-12-21 22:07:34,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 22:07:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand 145965 states and 174371 transitions. [2023-12-21 22:07:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-12-21 22:07:35,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 22:07:35,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 22:07:35,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2023-12-21 22:07:35,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:07:35,212 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 22:07:35,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 22:07:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash 97133888, now seen corresponding path program 1 times [2023-12-21 22:07:35,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 22:07:35,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896831093] [2023-12-21 22:07:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 22:07:35,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 22:07:35,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 22:07:35,214 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 22:07:35,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-12-21 22:07:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 22:07:35,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 22:07:35,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 22:07:35,566 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 22:07:35,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 22:07:35,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 22:07:35,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896831093] [2023-12-21 22:07:35,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896831093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 22:07:35,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 22:07:35,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 22:07:35,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266815694] [2023-12-21 22:07:35,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 22:07:35,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 22:07:35,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 22:07:35,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 22:07:35,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 22:07:35,568 INFO L87 Difference]: Start difference. First operand 145965 states and 174371 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8)