/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_label40+token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 21:37:05,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 21:37:05,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 21:37:05,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 21:37:05,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 21:37:05,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 21:37:05,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 21:37:05,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 21:37:05,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 21:37:05,619 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 21:37:05,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 21:37:05,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 21:37:05,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 21:37:05,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 21:37:05,622 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 21:37:05,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 21:37:05,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 21:37:05,622 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 21:37:05,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 21:37:05,623 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 21:37:05,623 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 21:37:05,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 21:37:05,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 21:37:05,623 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 21:37:05,624 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 21:37:05,624 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 21:37:05,624 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 21:37:05,624 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 21:37:05,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 21:37:05,624 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 21:37:05,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 21:37:05,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 21:37:05,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 21:37:05,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 21:37:05,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:37:05,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 21:37:05,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 21:37:05,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 21:37:05,626 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 21:37:05,626 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 21:37:05,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 21:37:05,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 21:37:05,627 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 21:37:05,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 21:37:05,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 21:37:05,627 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 21:37:05,627 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 21:37:05,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 21:37:05,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 21:37:05,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 21:37:05,850 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 21:37:05,850 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 21:37:05,852 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label40+token_ring.06.cil-2.c [2023-12-21 21:37:06,981 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 21:37:07,407 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 21:37:07,407 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label40+token_ring.06.cil-2.c [2023-12-21 21:37:07,449 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2917d218/e42098e7853e47aba735c7f9b8e0d016/FLAG82231ef2f [2023-12-21 21:37:07,462 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2917d218/e42098e7853e47aba735c7f9b8e0d016 [2023-12-21 21:37:07,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 21:37:07,466 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 21:37:07,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 21:37:07,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 21:37:07,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 21:37:07,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:37:07" (1/1) ... [2023-12-21 21:37:07,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c61af9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:07, skipping insertion in model container [2023-12-21 21:37:07,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:37:07" (1/1) ... [2023-12-21 21:37:07,641 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 21:37:08,969 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_label40+token_ring.06.cil-2.c[377069,377082] [2023-12-21 21:37:08,991 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_label40+token_ring.06.cil-2.c[383339,383352] [2023-12-21 21:37:09,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:37:09,164 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 21:37:09,816 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_label40+token_ring.06.cil-2.c[377069,377082] [2023-12-21 21:37:09,830 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_label40+token_ring.06.cil-2.c[383339,383352] [2023-12-21 21:37:09,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 21:37:09,892 INFO L206 MainTranslator]: Completed translation [2023-12-21 21:37:09,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09 WrapperNode [2023-12-21 21:37:09,893 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 21:37:09,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 21:37:09,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 21:37:09,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 21:37:09,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09" (1/1) ... [2023-12-21 21:37:09,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09" (1/1) ... [2023-12-21 21:37:10,241 INFO L138 Inliner]: procedures = 57, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12843 [2023-12-21 21:37:10,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 21:37:10,243 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 21:37:10,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 21:37:10,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 21:37:10,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09" (1/1) ... [2023-12-21 21:37:10,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09" (1/1) ... [2023-12-21 21:37:10,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09" (1/1) ... [2023-12-21 21:37:10,493 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 21:37:10,493 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09" (1/1) ... [2023-12-21 21:37:10,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09" (1/1) ... [2023-12-21 21:37:10,605 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09" (1/1) ... [2023-12-21 21:37:10,651 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09" (1/1) ... [2023-12-21 21:37:10,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09" (1/1) ... [2023-12-21 21:37:10,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09" (1/1) ... [2023-12-21 21:37:10,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 21:37:10,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 21:37:10,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 21:37:10,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 21:37:10,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09" (1/1) ... [2023-12-21 21:37:10,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 21:37:10,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 21:37:10,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 21:37:10,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 21:37:10,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 21:37:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-21 21:37:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-21 21:37:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-21 21:37:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-21 21:37:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-21 21:37:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-21 21:37:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 21:37:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-21 21:37:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-21 21:37:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-21 21:37:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-21 21:37:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-21 21:37:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-21 21:37:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 21:37:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 21:37:10,982 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 21:37:10,985 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 21:37:18,623 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 21:37:18,704 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 21:37:18,705 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-12-21 21:37:18,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:37:18 BoogieIcfgContainer [2023-12-21 21:37:18,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 21:37:18,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 21:37:18,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 21:37:18,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 21:37:18,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:37:07" (1/3) ... [2023-12-21 21:37:18,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fd0d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:37:18, skipping insertion in model container [2023-12-21 21:37:18,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:37:09" (2/3) ... [2023-12-21 21:37:18,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fd0d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:37:18, skipping insertion in model container [2023-12-21 21:37:18,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:37:18" (3/3) ... [2023-12-21 21:37:18,711 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.06.cil-2.c [2023-12-21 21:37:18,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 21:37:18,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 21:37:18,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 21:37:18,805 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;@4a95ef6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 21:37:18,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 21:37:18,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 2333 states, 2304 states have (on average 1.8815104166666667) internal successors, (4335), 2307 states have internal predecessors, (4335), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 21:37:18,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:18,832 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:18,833 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] [2023-12-21 21:37:18,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:18,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1188096418, now seen corresponding path program 1 times [2023-12-21 21:37:18,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:18,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590903848] [2023-12-21 21:37:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:18,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:18,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:18,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:18,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-21 21:37:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:19,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:37:19,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:19,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:19,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:19,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590903848] [2023-12-21 21:37:19,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590903848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:19,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:19,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:37:19,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868384270] [2023-12-21 21:37:19,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:19,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:37:19,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:19,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:37:19,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:37:19,140 INFO L87 Difference]: Start difference. First operand has 2333 states, 2304 states have (on average 1.8815104166666667) internal successors, (4335), 2307 states have internal predecessors, (4335), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:19,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:19,308 INFO L93 Difference]: Finished difference Result 4658 states and 8733 transitions. [2023-12-21 21:37:19,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:37:19,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:19,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:19,327 INFO L225 Difference]: With dead ends: 4658 [2023-12-21 21:37:19,327 INFO L226 Difference]: Without dead ends: 2329 [2023-12-21 21:37:19,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:37:19,336 INFO L413 NwaCegarLoop]: 4263 mSDtfsCounter, 322 mSDsluCounter, 3959 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 8222 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:19,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 8222 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:37:19,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2023-12-21 21:37:19,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2329. [2023-12-21 21:37:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2301 states have (on average 1.8457192524989134) internal successors, (4247), 2303 states have internal predecessors, (4247), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 21:37:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4287 transitions. [2023-12-21 21:37:19,437 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4287 transitions. Word has length 101 [2023-12-21 21:37:19,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:19,438 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 4287 transitions. [2023-12-21 21:37:19,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:19,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4287 transitions. [2023-12-21 21:37:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:19,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:19,456 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] [2023-12-21 21:37:19,473 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 21:37:19,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:19,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:19,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:19,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1229807648, now seen corresponding path program 1 times [2023-12-21 21:37:19,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:19,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680674644] [2023-12-21 21:37:19,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:19,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:19,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:19,660 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:19,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-21 21:37:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:19,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:19,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:19,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:19,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:19,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680674644] [2023-12-21 21:37:19,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680674644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:19,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:19,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:19,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280742434] [2023-12-21 21:37:19,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:19,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:19,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:19,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:19,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:19,859 INFO L87 Difference]: Start difference. First operand 2329 states and 4287 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:20,206 INFO L93 Difference]: Finished difference Result 2525 states and 4600 transitions. [2023-12-21 21:37:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:37:20,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:20,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:20,215 INFO L225 Difference]: With dead ends: 2525 [2023-12-21 21:37:20,215 INFO L226 Difference]: Without dead ends: 2329 [2023-12-21 21:37:20,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:37:20,217 INFO L413 NwaCegarLoop]: 4160 mSDtfsCounter, 4387 mSDsluCounter, 8228 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 12388 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:20,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4401 Valid, 12388 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:37:20,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2023-12-21 21:37:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2329. [2023-12-21 21:37:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2301 states have (on average 1.8444154715341157) internal successors, (4244), 2303 states have internal predecessors, (4244), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 21:37:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4284 transitions. [2023-12-21 21:37:20,258 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4284 transitions. Word has length 101 [2023-12-21 21:37:20,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:20,258 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 4284 transitions. [2023-12-21 21:37:20,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:20,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4284 transitions. [2023-12-21 21:37:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:20,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:20,261 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] [2023-12-21 21:37:20,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-21 21:37:20,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:20,467 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:20,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1166044576, now seen corresponding path program 1 times [2023-12-21 21:37:20,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:20,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473917593] [2023-12-21 21:37:20,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:20,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:20,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:20,469 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:20,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-21 21:37:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:20,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:20,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:20,619 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:20,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:20,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473917593] [2023-12-21 21:37:20,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473917593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:20,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:20,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:20,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189868016] [2023-12-21 21:37:20,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:20,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:20,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:20,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:20,621 INFO L87 Difference]: Start difference. First operand 2329 states and 4284 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:20,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:20,944 INFO L93 Difference]: Finished difference Result 2525 states and 4594 transitions. [2023-12-21 21:37:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:37:20,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:20,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:20,951 INFO L225 Difference]: With dead ends: 2525 [2023-12-21 21:37:20,951 INFO L226 Difference]: Without dead ends: 2329 [2023-12-21 21:37:20,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:37:20,953 INFO L413 NwaCegarLoop]: 4157 mSDtfsCounter, 4381 mSDsluCounter, 8224 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4395 SdHoareTripleChecker+Valid, 12381 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:20,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4395 Valid, 12381 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:37:20,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2023-12-21 21:37:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2329. [2023-12-21 21:37:20,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2301 states have (on average 1.8431116905693177) internal successors, (4241), 2303 states have internal predecessors, (4241), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 21:37:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4281 transitions. [2023-12-21 21:37:20,998 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4281 transitions. Word has length 101 [2023-12-21 21:37:20,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:20,998 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 4281 transitions. [2023-12-21 21:37:20,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:20,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4281 transitions. [2023-12-21 21:37:20,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:20,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:20,999 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] [2023-12-21 21:37:21,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-21 21:37:21,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:21,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:21,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1249791774, now seen corresponding path program 1 times [2023-12-21 21:37:21,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:21,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341455733] [2023-12-21 21:37:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:21,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:21,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:21,206 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:21,207 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 (5)] Waiting until timeout for monitored process [2023-12-21 21:37:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:21,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:21,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:21,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:21,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:21,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341455733] [2023-12-21 21:37:21,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341455733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:21,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:21,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:21,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869177136] [2023-12-21 21:37:21,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:21,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:21,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:21,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:21,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:21,358 INFO L87 Difference]: Start difference. First operand 2329 states and 4281 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:21,662 INFO L93 Difference]: Finished difference Result 2525 states and 4588 transitions. [2023-12-21 21:37:21,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:37:21,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:21,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:21,670 INFO L225 Difference]: With dead ends: 2525 [2023-12-21 21:37:21,670 INFO L226 Difference]: Without dead ends: 2329 [2023-12-21 21:37:21,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:37:21,673 INFO L413 NwaCegarLoop]: 4154 mSDtfsCounter, 4375 mSDsluCounter, 8220 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4389 SdHoareTripleChecker+Valid, 12374 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:21,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4389 Valid, 12374 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:37:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2023-12-21 21:37:21,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2329. [2023-12-21 21:37:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2301 states have (on average 1.8418079096045197) internal successors, (4238), 2303 states have internal predecessors, (4238), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 21:37:21,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4278 transitions. [2023-12-21 21:37:21,812 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4278 transitions. Word has length 101 [2023-12-21 21:37:21,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:21,812 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 4278 transitions. [2023-12-21 21:37:21,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4278 transitions. [2023-12-21 21:37:21,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:21,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:21,830 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] [2023-12-21 21:37:21,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-21 21:37:22,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:22,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:22,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2065174878, now seen corresponding path program 1 times [2023-12-21 21:37:22,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:22,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416846865] [2023-12-21 21:37:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:22,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:22,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:22,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:22,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-21 21:37:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:22,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:22,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:22,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:22,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:22,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416846865] [2023-12-21 21:37:22,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416846865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:22,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:22,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:22,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055325387] [2023-12-21 21:37:22,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:22,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:22,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:22,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:22,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:22,230 INFO L87 Difference]: Start difference. First operand 2329 states and 4278 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:22,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:22,589 INFO L93 Difference]: Finished difference Result 2525 states and 4582 transitions. [2023-12-21 21:37:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:37:22,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:22,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:22,597 INFO L225 Difference]: With dead ends: 2525 [2023-12-21 21:37:22,597 INFO L226 Difference]: Without dead ends: 2329 [2023-12-21 21:37:22,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:37:22,600 INFO L413 NwaCegarLoop]: 4151 mSDtfsCounter, 4369 mSDsluCounter, 8216 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4383 SdHoareTripleChecker+Valid, 12367 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:22,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4383 Valid, 12367 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:37:22,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2023-12-21 21:37:22,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2329. [2023-12-21 21:37:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2301 states have (on average 1.840504128639722) internal successors, (4235), 2303 states have internal predecessors, (4235), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 21:37:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4275 transitions. [2023-12-21 21:37:22,652 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4275 transitions. Word has length 101 [2023-12-21 21:37:22,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:22,652 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 4275 transitions. [2023-12-21 21:37:22,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:22,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4275 transitions. [2023-12-21 21:37:22,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:22,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:22,654 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] [2023-12-21 21:37:22,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:22,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:22,859 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:22,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:22,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1260193566, now seen corresponding path program 1 times [2023-12-21 21:37:22,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:22,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816516081] [2023-12-21 21:37:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:22,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:22,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:22,861 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:22,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 21:37:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:22,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:22,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:23,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:23,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:23,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816516081] [2023-12-21 21:37:23,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816516081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:23,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:23,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:23,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561969564] [2023-12-21 21:37:23,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:23,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:23,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:23,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:23,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:23,018 INFO L87 Difference]: Start difference. First operand 2329 states and 4275 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:23,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:23,362 INFO L93 Difference]: Finished difference Result 2525 states and 4576 transitions. [2023-12-21 21:37:23,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:37:23,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:23,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:23,370 INFO L225 Difference]: With dead ends: 2525 [2023-12-21 21:37:23,371 INFO L226 Difference]: Without dead ends: 2329 [2023-12-21 21:37:23,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:37:23,376 INFO L413 NwaCegarLoop]: 4148 mSDtfsCounter, 4363 mSDsluCounter, 8212 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 12360 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:23,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4377 Valid, 12360 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:37:23,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2023-12-21 21:37:23,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2329. [2023-12-21 21:37:23,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2301 states have (on average 1.839200347674924) internal successors, (4232), 2303 states have internal predecessors, (4232), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 21:37:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4272 transitions. [2023-12-21 21:37:23,434 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4272 transitions. Word has length 101 [2023-12-21 21:37:23,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:23,434 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 4272 transitions. [2023-12-21 21:37:23,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:23,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4272 transitions. [2023-12-21 21:37:23,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:23,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:23,439 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] [2023-12-21 21:37:23,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:23,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:23,644 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:23,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:23,644 INFO L85 PathProgramCache]: Analyzing trace with hash 264395102, now seen corresponding path program 1 times [2023-12-21 21:37:23,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:23,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428243836] [2023-12-21 21:37:23,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:23,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:23,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:23,647 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:23,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 21:37:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:23,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:23,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:23,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:23,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:23,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428243836] [2023-12-21 21:37:23,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428243836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:23,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:23,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:23,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818472092] [2023-12-21 21:37:23,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:23,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:23,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:23,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:23,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:23,782 INFO L87 Difference]: Start difference. First operand 2329 states and 4272 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:24,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:24,110 INFO L93 Difference]: Finished difference Result 2525 states and 4570 transitions. [2023-12-21 21:37:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:37:24,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:24,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:24,121 INFO L225 Difference]: With dead ends: 2525 [2023-12-21 21:37:24,121 INFO L226 Difference]: Without dead ends: 2329 [2023-12-21 21:37:24,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:37:24,124 INFO L413 NwaCegarLoop]: 4145 mSDtfsCounter, 4357 mSDsluCounter, 8208 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4371 SdHoareTripleChecker+Valid, 12353 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:24,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4371 Valid, 12353 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:37:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2023-12-21 21:37:24,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2329. [2023-12-21 21:37:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2301 states have (on average 1.8378965667101261) internal successors, (4229), 2303 states have internal predecessors, (4229), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 21:37:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4269 transitions. [2023-12-21 21:37:24,175 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4269 transitions. Word has length 101 [2023-12-21 21:37:24,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:24,175 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 4269 transitions. [2023-12-21 21:37:24,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:24,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4269 transitions. [2023-12-21 21:37:24,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:24,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:24,177 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] [2023-12-21 21:37:24,200 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 21:37:24,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:24,382 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:24,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:24,382 INFO L85 PathProgramCache]: Analyzing trace with hash -737558754, now seen corresponding path program 1 times [2023-12-21 21:37:24,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:24,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461674972] [2023-12-21 21:37:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:24,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:24,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:24,384 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:24,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 21:37:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:24,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:24,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:24,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:24,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:24,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461674972] [2023-12-21 21:37:24,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461674972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:24,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:24,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:24,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100131875] [2023-12-21 21:37:24,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:24,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:24,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:24,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:24,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:24,528 INFO L87 Difference]: Start difference. First operand 2329 states and 4269 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:24,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:24,938 INFO L93 Difference]: Finished difference Result 2572 states and 4641 transitions. [2023-12-21 21:37:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:37:24,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:24,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:24,945 INFO L225 Difference]: With dead ends: 2572 [2023-12-21 21:37:24,946 INFO L226 Difference]: Without dead ends: 2376 [2023-12-21 21:37:24,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:37:24,948 INFO L413 NwaCegarLoop]: 4143 mSDtfsCounter, 4411 mSDsluCounter, 8204 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4425 SdHoareTripleChecker+Valid, 12347 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:24,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4425 Valid, 12347 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:37:24,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2023-12-21 21:37:24,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2376. [2023-12-21 21:37:25,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 2345 states have (on average 1.8294243070362473) internal successors, (4290), 2347 states have internal predecessors, (4290), 21 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-21 21:37:25,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 4332 transitions. [2023-12-21 21:37:25,019 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 4332 transitions. Word has length 101 [2023-12-21 21:37:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:25,019 INFO L495 AbstractCegarLoop]: Abstraction has 2376 states and 4332 transitions. [2023-12-21 21:37:25,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 4332 transitions. [2023-12-21 21:37:25,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:25,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:25,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:37:25,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:25,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:25,226 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:25,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:25,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1206480509, now seen corresponding path program 1 times [2023-12-21 21:37:25,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:25,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380475509] [2023-12-21 21:37:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:25,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:25,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:25,228 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:25,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-21 21:37:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:25,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:25,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:25,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:25,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:25,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380475509] [2023-12-21 21:37:25,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380475509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:25,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:25,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768619588] [2023-12-21 21:37:25,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:25,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:25,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:25,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:25,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:25,393 INFO L87 Difference]: Start difference. First operand 2376 states and 4332 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:25,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:25,762 INFO L93 Difference]: Finished difference Result 2666 states and 4767 transitions. [2023-12-21 21:37:25,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:37:25,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:25,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:25,771 INFO L225 Difference]: With dead ends: 2666 [2023-12-21 21:37:25,771 INFO L226 Difference]: Without dead ends: 2423 [2023-12-21 21:37:25,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:37:25,774 INFO L413 NwaCegarLoop]: 4140 mSDtfsCounter, 4403 mSDsluCounter, 8200 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4417 SdHoareTripleChecker+Valid, 12340 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:25,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4417 Valid, 12340 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:37:25,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2023-12-21 21:37:25,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2423. [2023-12-21 21:37:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2389 states have (on average 1.8204269568857263) internal successors, (4349), 2391 states have internal predecessors, (4349), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-21 21:37:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4393 transitions. [2023-12-21 21:37:25,822 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4393 transitions. Word has length 101 [2023-12-21 21:37:25,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:25,822 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 4393 transitions. [2023-12-21 21:37:25,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:25,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4393 transitions. [2023-12-21 21:37:25,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:25,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:25,824 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] [2023-12-21 21:37:25,853 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 21:37:26,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:26,057 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:26,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:26,060 INFO L85 PathProgramCache]: Analyzing trace with hash 310753436, now seen corresponding path program 1 times [2023-12-21 21:37:26,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:26,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347031697] [2023-12-21 21:37:26,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:26,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:26,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:26,078 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:26,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-21 21:37:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:26,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:26,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:26,289 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:26,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:26,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347031697] [2023-12-21 21:37:26,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347031697] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:26,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:26,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:26,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661024076] [2023-12-21 21:37:26,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:26,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:26,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:26,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:26,291 INFO L87 Difference]: Start difference. First operand 2423 states and 4393 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:26,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:26,606 INFO L93 Difference]: Finished difference Result 2760 states and 4889 transitions. [2023-12-21 21:37:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:37:26,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:26,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:26,625 INFO L225 Difference]: With dead ends: 2760 [2023-12-21 21:37:26,625 INFO L226 Difference]: Without dead ends: 2470 [2023-12-21 21:37:26,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:37:26,627 INFO L413 NwaCegarLoop]: 4137 mSDtfsCounter, 4397 mSDsluCounter, 8196 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 12333 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:26,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4411 Valid, 12333 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:37:26,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2023-12-21 21:37:26,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2470. [2023-12-21 21:37:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 2433 states have (on average 1.8109330045211673) internal successors, (4406), 2435 states have internal predecessors, (4406), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-21 21:37:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 4452 transitions. [2023-12-21 21:37:26,667 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 4452 transitions. Word has length 101 [2023-12-21 21:37:26,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:26,667 INFO L495 AbstractCegarLoop]: Abstraction has 2470 states and 4452 transitions. [2023-12-21 21:37:26,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:26,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 4452 transitions. [2023-12-21 21:37:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:26,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:26,668 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] [2023-12-21 21:37:26,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:26,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:26,873 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:26,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash -2040361957, now seen corresponding path program 1 times [2023-12-21 21:37:26,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:26,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584429067] [2023-12-21 21:37:26,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:26,874 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 21:37:26,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:26,875 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:26,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-21 21:37:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:26,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:26,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:27,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:27,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:27,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584429067] [2023-12-21 21:37:27,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584429067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:27,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:27,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:27,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530106173] [2023-12-21 21:37:27,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:27,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:27,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:27,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:27,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:27,006 INFO L87 Difference]: Start difference. First operand 2470 states and 4452 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:27,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:27,313 INFO L93 Difference]: Finished difference Result 2854 states and 5007 transitions. [2023-12-21 21:37:27,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:37:27,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:27,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:27,319 INFO L225 Difference]: With dead ends: 2854 [2023-12-21 21:37:27,319 INFO L226 Difference]: Without dead ends: 2517 [2023-12-21 21:37:27,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:37:27,320 INFO L413 NwaCegarLoop]: 4134 mSDtfsCounter, 4390 mSDsluCounter, 8192 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4404 SdHoareTripleChecker+Valid, 12326 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:27,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4404 Valid, 12326 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:37:27,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2023-12-21 21:37:27,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2517. [2023-12-21 21:37:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2477 states have (on average 1.8009689140088818) internal successors, (4461), 2479 states have internal predecessors, (4461), 24 states have call successors, (24), 14 states have call predecessors, (24), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-21 21:37:27,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4509 transitions. [2023-12-21 21:37:27,357 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4509 transitions. Word has length 101 [2023-12-21 21:37:27,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:27,358 INFO L495 AbstractCegarLoop]: Abstraction has 2517 states and 4509 transitions. [2023-12-21 21:37:27,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:27,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4509 transitions. [2023-12-21 21:37:27,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:27,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:27,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:37:27,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:27,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:27,563 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:27,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:27,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1123905957, now seen corresponding path program 1 times [2023-12-21 21:37:27,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:27,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186193280] [2023-12-21 21:37:27,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:27,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:27,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:27,565 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:27,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-21 21:37:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:27,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:27,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:27,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:27,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:27,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186193280] [2023-12-21 21:37:27,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186193280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:27,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:27,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:27,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095686692] [2023-12-21 21:37:27,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:27,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:27,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:27,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:27,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:27,703 INFO L87 Difference]: Start difference. First operand 2517 states and 4509 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:28,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:28,026 INFO L93 Difference]: Finished difference Result 2948 states and 5121 transitions. [2023-12-21 21:37:28,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:37:28,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:28,032 INFO L225 Difference]: With dead ends: 2948 [2023-12-21 21:37:28,032 INFO L226 Difference]: Without dead ends: 2564 [2023-12-21 21:37:28,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:37:28,033 INFO L413 NwaCegarLoop]: 4131 mSDtfsCounter, 4383 mSDsluCounter, 8188 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4397 SdHoareTripleChecker+Valid, 12319 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:28,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4397 Valid, 12319 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:37:28,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2023-12-21 21:37:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2564. [2023-12-21 21:37:28,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2521 states have (on average 1.7905593018643395) internal successors, (4514), 2523 states have internal predecessors, (4514), 25 states have call successors, (25), 16 states have call predecessors, (25), 16 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-21 21:37:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 4564 transitions. [2023-12-21 21:37:28,077 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 4564 transitions. Word has length 101 [2023-12-21 21:37:28,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:28,077 INFO L495 AbstractCegarLoop]: Abstraction has 2564 states and 4564 transitions. [2023-12-21 21:37:28,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 4564 transitions. [2023-12-21 21:37:28,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:28,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:28,078 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] [2023-12-21 21:37:28,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:28,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:28,282 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:28,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:28,282 INFO L85 PathProgramCache]: Analyzing trace with hash -27096548, now seen corresponding path program 1 times [2023-12-21 21:37:28,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:28,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952389737] [2023-12-21 21:37:28,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:28,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:28,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:28,297 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:28,299 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 (14)] Waiting until timeout for monitored process [2023-12-21 21:37:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:28,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:28,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:28,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:28,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:28,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952389737] [2023-12-21 21:37:28,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952389737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:28,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:28,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:28,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715606145] [2023-12-21 21:37:28,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:28,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:28,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:28,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:28,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:28,417 INFO L87 Difference]: Start difference. First operand 2564 states and 4564 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:28,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:28,733 INFO L93 Difference]: Finished difference Result 3042 states and 5231 transitions. [2023-12-21 21:37:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:37:28,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:28,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:28,739 INFO L225 Difference]: With dead ends: 3042 [2023-12-21 21:37:28,740 INFO L226 Difference]: Without dead ends: 2611 [2023-12-21 21:37:28,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 21:37:28,743 INFO L413 NwaCegarLoop]: 4128 mSDtfsCounter, 4376 mSDsluCounter, 8184 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4390 SdHoareTripleChecker+Valid, 12312 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:28,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4390 Valid, 12312 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:37:28,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2023-12-21 21:37:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2611. [2023-12-21 21:37:28,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2565 states have (on average 1.7797270955165692) internal successors, (4565), 2567 states have internal predecessors, (4565), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 21:37:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 4617 transitions. [2023-12-21 21:37:28,800 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 4617 transitions. Word has length 101 [2023-12-21 21:37:28,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:28,800 INFO L495 AbstractCegarLoop]: Abstraction has 2611 states and 4617 transitions. [2023-12-21 21:37:28,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:28,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 4617 transitions. [2023-12-21 21:37:28,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:28,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:28,801 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] [2023-12-21 21:37:28,807 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 21:37:29,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:29,005 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:29,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:29,005 INFO L85 PathProgramCache]: Analyzing trace with hash 362683484, now seen corresponding path program 1 times [2023-12-21 21:37:29,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:29,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470985919] [2023-12-21 21:37:29,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:29,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:29,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:29,008 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:29,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-21 21:37:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:29,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:29,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:29,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:29,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:29,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470985919] [2023-12-21 21:37:29,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470985919] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:29,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:29,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:29,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094412803] [2023-12-21 21:37:29,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:29,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:37:29,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:29,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:37:29,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:29,112 INFO L87 Difference]: Start difference. First operand 2611 states and 4617 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:29,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:29,232 INFO L93 Difference]: Finished difference Result 3128 states and 5325 transitions. [2023-12-21 21:37:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:37:29,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:29,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:29,238 INFO L225 Difference]: With dead ends: 3128 [2023-12-21 21:37:29,238 INFO L226 Difference]: Without dead ends: 2651 [2023-12-21 21:37:29,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:29,241 INFO L413 NwaCegarLoop]: 4224 mSDtfsCounter, 56 mSDsluCounter, 8438 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 12662 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:29,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 12662 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:37:29,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2023-12-21 21:37:29,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2613. [2023-12-21 21:37:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2567 states have (on average 1.7767822360732373) internal successors, (4561), 2569 states have internal predecessors, (4561), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 21:37:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 4613 transitions. [2023-12-21 21:37:29,299 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 4613 transitions. Word has length 101 [2023-12-21 21:37:29,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:29,300 INFO L495 AbstractCegarLoop]: Abstraction has 2613 states and 4613 transitions. [2023-12-21 21:37:29,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:29,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 4613 transitions. [2023-12-21 21:37:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:29,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:29,301 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] [2023-12-21 21:37:29,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:29,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:29,507 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:29,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:29,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1323496354, now seen corresponding path program 1 times [2023-12-21 21:37:29,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:29,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127108478] [2023-12-21 21:37:29,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:29,508 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:29,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:29,509 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:29,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-21 21:37:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:29,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:29,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:29,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:29,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:29,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:29,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127108478] [2023-12-21 21:37:29,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127108478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:29,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:29,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:29,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214849403] [2023-12-21 21:37:29,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:29,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:37:29,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:29,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:37:29,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:29,628 INFO L87 Difference]: Start difference. First operand 2613 states and 4613 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:29,775 INFO L93 Difference]: Finished difference Result 3330 states and 5586 transitions. [2023-12-21 21:37:29,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:37:29,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:29,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:29,780 INFO L225 Difference]: With dead ends: 3330 [2023-12-21 21:37:29,780 INFO L226 Difference]: Without dead ends: 2851 [2023-12-21 21:37:29,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:29,783 INFO L413 NwaCegarLoop]: 4224 mSDtfsCounter, 47 mSDsluCounter, 8443 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 12667 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:29,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 12667 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:37:29,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2023-12-21 21:37:29,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2627. [2023-12-21 21:37:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2581 states have (on average 1.7725687717938783) internal successors, (4575), 2583 states have internal predecessors, (4575), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 21:37:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4627 transitions. [2023-12-21 21:37:29,830 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4627 transitions. Word has length 101 [2023-12-21 21:37:29,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:29,830 INFO L495 AbstractCegarLoop]: Abstraction has 2627 states and 4627 transitions. [2023-12-21 21:37:29,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:29,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4627 transitions. [2023-12-21 21:37:29,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:29,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:29,831 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] [2023-12-21 21:37:29,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:30,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:30,035 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:30,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1121672420, now seen corresponding path program 1 times [2023-12-21 21:37:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146664729] [2023-12-21 21:37:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:30,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:30,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:30,052 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:30,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-21 21:37:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:30,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:30,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:30,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:30,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:30,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146664729] [2023-12-21 21:37:30,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146664729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:30,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:30,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:30,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186420900] [2023-12-21 21:37:30,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:30,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:37:30,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:30,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:37:30,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:30,154 INFO L87 Difference]: Start difference. First operand 2627 states and 4627 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:30,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:30,245 INFO L93 Difference]: Finished difference Result 3148 states and 5328 transitions. [2023-12-21 21:37:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:37:30,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:30,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:30,252 INFO L225 Difference]: With dead ends: 3148 [2023-12-21 21:37:30,252 INFO L226 Difference]: Without dead ends: 2655 [2023-12-21 21:37:30,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:30,254 INFO L413 NwaCegarLoop]: 4225 mSDtfsCounter, 38 mSDsluCounter, 8441 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 12666 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:30,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 12666 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:37:30,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2023-12-21 21:37:30,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2629. [2023-12-21 21:37:30,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2629 states, 2583 states have (on average 1.7696476964769647) internal successors, (4571), 2585 states have internal predecessors, (4571), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 21:37:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2629 states to 2629 states and 4623 transitions. [2023-12-21 21:37:30,299 INFO L78 Accepts]: Start accepts. Automaton has 2629 states and 4623 transitions. Word has length 101 [2023-12-21 21:37:30,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:30,299 INFO L495 AbstractCegarLoop]: Abstraction has 2629 states and 4623 transitions. [2023-12-21 21:37:30,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:30,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2629 states and 4623 transitions. [2023-12-21 21:37:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:30,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:30,300 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] [2023-12-21 21:37:30,313 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 (17)] Ended with exit code 0 [2023-12-21 21:37:30,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:30,504 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:30,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:30,504 INFO L85 PathProgramCache]: Analyzing trace with hash 265112990, now seen corresponding path program 1 times [2023-12-21 21:37:30,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:30,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268233724] [2023-12-21 21:37:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:30,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:30,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:30,529 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:30,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-21 21:37:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:30,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:30,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:30,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:30,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:30,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268233724] [2023-12-21 21:37:30,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268233724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:30,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:30,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:30,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580479568] [2023-12-21 21:37:30,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:30,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:37:30,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:30,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:37:30,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:30,624 INFO L87 Difference]: Start difference. First operand 2629 states and 4623 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:30,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:30,716 INFO L93 Difference]: Finished difference Result 3146 states and 5312 transitions. [2023-12-21 21:37:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:37:30,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:30,720 INFO L225 Difference]: With dead ends: 3146 [2023-12-21 21:37:30,720 INFO L226 Difference]: Without dead ends: 2651 [2023-12-21 21:37:30,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:30,722 INFO L413 NwaCegarLoop]: 4224 mSDtfsCounter, 29 mSDsluCounter, 8440 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12664 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:30,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12664 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:37:30,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2023-12-21 21:37:30,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2631. [2023-12-21 21:37:30,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2585 states have (on average 1.7667311411992264) internal successors, (4567), 2587 states have internal predecessors, (4567), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 21:37:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4619 transitions. [2023-12-21 21:37:30,768 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4619 transitions. Word has length 101 [2023-12-21 21:37:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:30,768 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 4619 transitions. [2023-12-21 21:37:30,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4619 transitions. [2023-12-21 21:37:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:30,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:30,769 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] [2023-12-21 21:37:30,775 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 21:37:30,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:30,974 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:30,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:30,974 INFO L85 PathProgramCache]: Analyzing trace with hash -215967268, now seen corresponding path program 1 times [2023-12-21 21:37:30,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:30,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042267913] [2023-12-21 21:37:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:30,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:30,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:30,977 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:30,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-21 21:37:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:31,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:31,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:31,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:31,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:31,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042267913] [2023-12-21 21:37:31,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042267913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:31,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:31,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:31,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036595374] [2023-12-21 21:37:31,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:31,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:37:31,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:31,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:37:31,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:31,110 INFO L87 Difference]: Start difference. First operand 2631 states and 4619 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:31,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:31,201 INFO L93 Difference]: Finished difference Result 3138 states and 5288 transitions. [2023-12-21 21:37:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:37:31,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:31,205 INFO L225 Difference]: With dead ends: 3138 [2023-12-21 21:37:31,205 INFO L226 Difference]: Without dead ends: 2641 [2023-12-21 21:37:31,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:31,207 INFO L413 NwaCegarLoop]: 4224 mSDtfsCounter, 11 mSDsluCounter, 8442 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12666 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:31,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 12666 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:37:31,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2023-12-21 21:37:31,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2633. [2023-12-21 21:37:31,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2587 states have (on average 1.763819095477387) internal successors, (4563), 2589 states have internal predecessors, (4563), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 21:37:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 4615 transitions. [2023-12-21 21:37:31,243 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 4615 transitions. Word has length 101 [2023-12-21 21:37:31,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:31,244 INFO L495 AbstractCegarLoop]: Abstraction has 2633 states and 4615 transitions. [2023-12-21 21:37:31,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:31,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 4615 transitions. [2023-12-21 21:37:31,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:31,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:31,244 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] [2023-12-21 21:37:31,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:31,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:31,448 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:31,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:31,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1587774566, now seen corresponding path program 1 times [2023-12-21 21:37:31,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:31,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573838444] [2023-12-21 21:37:31,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:31,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:31,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:31,450 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:31,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-21 21:37:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:31,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 21:37:31,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:31,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:31,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:31,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573838444] [2023-12-21 21:37:31,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573838444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:31,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:31,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:31,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216756024] [2023-12-21 21:37:31,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:31,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:37:31,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:31,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:37:31,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:31,569 INFO L87 Difference]: Start difference. First operand 2633 states and 4615 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:31,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:31,661 INFO L93 Difference]: Finished difference Result 3136 states and 5272 transitions. [2023-12-21 21:37:31,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 21:37:31,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:31,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:31,670 INFO L225 Difference]: With dead ends: 3136 [2023-12-21 21:37:31,670 INFO L226 Difference]: Without dead ends: 2637 [2023-12-21 21:37:31,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:31,672 INFO L413 NwaCegarLoop]: 4224 mSDtfsCounter, 2 mSDsluCounter, 8443 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12667 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:31,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12667 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:37:31,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2023-12-21 21:37:31,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2635. [2023-12-21 21:37:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2589 states have (on average 1.760911548860564) internal successors, (4559), 2591 states have internal predecessors, (4559), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 21:37:31,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 4611 transitions. [2023-12-21 21:37:31,713 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 4611 transitions. Word has length 101 [2023-12-21 21:37:31,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:31,713 INFO L495 AbstractCegarLoop]: Abstraction has 2635 states and 4611 transitions. [2023-12-21 21:37:31,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:31,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 4611 transitions. [2023-12-21 21:37:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:31,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:31,714 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] [2023-12-21 21:37:31,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-21 21:37:31,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:31,918 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:31,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:31,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1863187228, now seen corresponding path program 1 times [2023-12-21 21:37:31,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:31,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299909156] [2023-12-21 21:37:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:31,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:31,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:31,920 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:31,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-21 21:37:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:32,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:37:32,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:32,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:32,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:32,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299909156] [2023-12-21 21:37:32,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299909156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:32,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:32,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:32,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838741964] [2023-12-21 21:37:32,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:32,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:32,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:32,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:32,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:32,120 INFO L87 Difference]: Start difference. First operand 2635 states and 4611 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:32,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:32,530 INFO L93 Difference]: Finished difference Result 3664 states and 5904 transitions. [2023-12-21 21:37:32,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:37:32,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:32,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:32,536 INFO L225 Difference]: With dead ends: 3664 [2023-12-21 21:37:32,537 INFO L226 Difference]: Without dead ends: 3162 [2023-12-21 21:37:32,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:37:32,540 INFO L413 NwaCegarLoop]: 4148 mSDtfsCounter, 4388 mSDsluCounter, 8369 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 12517 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:32,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4401 Valid, 12517 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:37:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2023-12-21 21:37:32,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 3145. [2023-12-21 21:37:32,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3145 states, 3059 states have (on average 1.6845374305328538) internal successors, (5153), 3062 states have internal predecessors, (5153), 47 states have call successors, (47), 36 states have call predecessors, (47), 37 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:37:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 5248 transitions. [2023-12-21 21:37:32,607 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 5248 transitions. Word has length 101 [2023-12-21 21:37:32,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:32,608 INFO L495 AbstractCegarLoop]: Abstraction has 3145 states and 5248 transitions. [2023-12-21 21:37:32,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:32,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 5248 transitions. [2023-12-21 21:37:32,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:32,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:32,609 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] [2023-12-21 21:37:32,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:32,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:32,813 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:32,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1730180194, now seen corresponding path program 1 times [2023-12-21 21:37:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:32,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69248006] [2023-12-21 21:37:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:32,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:32,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:32,815 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:32,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-21 21:37:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:32,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 21:37:32,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:33,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:33,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:33,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:33,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69248006] [2023-12-21 21:37:33,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69248006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:33,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:33,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:33,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486340606] [2023-12-21 21:37:33,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:33,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 21:37:33,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:33,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 21:37:33,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:33,010 INFO L87 Difference]: Start difference. First operand 3145 states and 5248 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:33,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:33,416 INFO L93 Difference]: Finished difference Result 4289 states and 6701 transitions. [2023-12-21 21:37:33,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 21:37:33,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:33,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:33,422 INFO L225 Difference]: With dead ends: 4289 [2023-12-21 21:37:33,422 INFO L226 Difference]: Without dead ends: 3277 [2023-12-21 21:37:33,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 21:37:33,424 INFO L413 NwaCegarLoop]: 4126 mSDtfsCounter, 4356 mSDsluCounter, 8180 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4369 SdHoareTripleChecker+Valid, 12306 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:33,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4369 Valid, 12306 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:37:33,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2023-12-21 21:37:33,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 3209. [2023-12-21 21:37:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3209 states, 3121 states have (on average 1.6661326497917335) internal successors, (5200), 3124 states have internal predecessors, (5200), 47 states have call successors, (47), 38 states have call predecessors, (47), 39 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2023-12-21 21:37:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 5295 transitions. [2023-12-21 21:37:33,490 INFO L78 Accepts]: Start accepts. Automaton has 3209 states and 5295 transitions. Word has length 101 [2023-12-21 21:37:33,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:33,490 INFO L495 AbstractCegarLoop]: Abstraction has 3209 states and 5295 transitions. [2023-12-21 21:37:33,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-21 21:37:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3209 states and 5295 transitions. [2023-12-21 21:37:33,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 21:37:33,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:33,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:37:33,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:33,695 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:33,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 759348768, now seen corresponding path program 1 times [2023-12-21 21:37:33,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:33,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546621518] [2023-12-21 21:37:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:33,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:33,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:33,698 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:33,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-21 21:37:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:33,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:37:33,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 21:37:33,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:33,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:33,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546621518] [2023-12-21 21:37:33,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546621518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:33,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:33,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:37:33,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897258604] [2023-12-21 21:37:33,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:33,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:37:33,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:33,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:37:33,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:37:33,879 INFO L87 Difference]: Start difference. First operand 3209 states and 5295 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:37:34,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:34,101 INFO L93 Difference]: Finished difference Result 5330 states and 7920 transitions. [2023-12-21 21:37:34,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:37:34,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 101 [2023-12-21 21:37:34,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:34,109 INFO L225 Difference]: With dead ends: 5330 [2023-12-21 21:37:34,109 INFO L226 Difference]: Without dead ends: 4255 [2023-12-21 21:37:34,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:37:34,112 INFO L413 NwaCegarLoop]: 4260 mSDtfsCounter, 4139 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4139 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:34,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4139 Valid, 4495 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:37:34,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4255 states. [2023-12-21 21:37:34,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4255 to 4253. [2023-12-21 21:37:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4253 states, 4083 states have (on average 1.5603722752877787) internal successors, (6371), 4089 states have internal predecessors, (6371), 90 states have call successors, (90), 76 states have call predecessors, (90), 78 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2023-12-21 21:37:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 6553 transitions. [2023-12-21 21:37:34,206 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 6553 transitions. Word has length 101 [2023-12-21 21:37:34,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:34,206 INFO L495 AbstractCegarLoop]: Abstraction has 4253 states and 6553 transitions. [2023-12-21 21:37:34,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-21 21:37:34,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 6553 transitions. [2023-12-21 21:37:34,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-21 21:37:34,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:34,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:37:34,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:34,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:34,413 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:34,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:34,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1608084620, now seen corresponding path program 1 times [2023-12-21 21:37:34,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:34,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213555041] [2023-12-21 21:37:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:34,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:34,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:34,416 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:34,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-21 21:37:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:34,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:37:34,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 21:37:34,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:34,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:34,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213555041] [2023-12-21 21:37:34,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213555041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:34,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:34,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:34,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911284363] [2023-12-21 21:37:34,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:34,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:37:34,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:34,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:37:34,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:34,703 INFO L87 Difference]: Start difference. First operand 4253 states and 6553 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:37:35,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:35,115 INFO L93 Difference]: Finished difference Result 8392 states and 11583 transitions. [2023-12-21 21:37:35,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:37:35,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 163 [2023-12-21 21:37:35,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:35,132 INFO L225 Difference]: With dead ends: 8392 [2023-12-21 21:37:35,132 INFO L226 Difference]: Without dead ends: 6274 [2023-12-21 21:37:35,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:35,138 INFO L413 NwaCegarLoop]: 4270 mSDtfsCounter, 4315 mSDsluCounter, 4370 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4320 SdHoareTripleChecker+Valid, 8640 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:35,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4320 Valid, 8640 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:37:35,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6274 states. [2023-12-21 21:37:35,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6274 to 6272. [2023-12-21 21:37:35,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6272 states, 5943 states have (on average 1.4512872286723877) internal successors, (8625), 5958 states have internal predecessors, (8625), 171 states have call successors, (171), 144 states have call predecessors, (171), 156 states have return successors, (195), 171 states have call predecessors, (195), 171 states have call successors, (195) [2023-12-21 21:37:35,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6272 states to 6272 states and 8991 transitions. [2023-12-21 21:37:35,316 INFO L78 Accepts]: Start accepts. Automaton has 6272 states and 8991 transitions. Word has length 163 [2023-12-21 21:37:35,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:35,316 INFO L495 AbstractCegarLoop]: Abstraction has 6272 states and 8991 transitions. [2023-12-21 21:37:35,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:37:35,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6272 states and 8991 transitions. [2023-12-21 21:37:35,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-21 21:37:35,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:35,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:37:35,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:35,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:35,524 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:35,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:35,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1705927862, now seen corresponding path program 1 times [2023-12-21 21:37:35,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:35,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776576082] [2023-12-21 21:37:35,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:35,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:35,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:35,526 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:35,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-21 21:37:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:35,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:37:35,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 21:37:35,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:35,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:35,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776576082] [2023-12-21 21:37:35,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776576082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:35,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:35,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:37:35,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547927918] [2023-12-21 21:37:35,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:35,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:37:35,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:35,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:37:35,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:37:35,670 INFO L87 Difference]: Start difference. First operand 6272 states and 8991 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:37:35,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:35,852 INFO L93 Difference]: Finished difference Result 10400 states and 13984 transitions. [2023-12-21 21:37:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:37:35,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 163 [2023-12-21 21:37:35,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:35,867 INFO L225 Difference]: With dead ends: 10400 [2023-12-21 21:37:35,867 INFO L226 Difference]: Without dead ends: 6263 [2023-12-21 21:37:35,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:37:35,876 INFO L413 NwaCegarLoop]: 4220 mSDtfsCounter, 283 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 8177 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:35,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 8177 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:37:35,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2023-12-21 21:37:36,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 6263. [2023-12-21 21:37:36,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6263 states, 5937 states have (on average 1.4509011285160855) internal successors, (8614), 5951 states have internal predecessors, (8614), 168 states have call successors, (168), 144 states have call predecessors, (168), 156 states have return successors, (192), 168 states have call predecessors, (192), 168 states have call successors, (192) [2023-12-21 21:37:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6263 states to 6263 states and 8974 transitions. [2023-12-21 21:37:36,161 INFO L78 Accepts]: Start accepts. Automaton has 6263 states and 8974 transitions. Word has length 163 [2023-12-21 21:37:36,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:36,162 INFO L495 AbstractCegarLoop]: Abstraction has 6263 states and 8974 transitions. [2023-12-21 21:37:36,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:37:36,162 INFO L276 IsEmpty]: Start isEmpty. Operand 6263 states and 8974 transitions. [2023-12-21 21:37:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 21:37:36,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:36,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:37:36,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:36,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:36,369 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:36,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:36,370 INFO L85 PathProgramCache]: Analyzing trace with hash 516889297, now seen corresponding path program 1 times [2023-12-21 21:37:36,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:36,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36890191] [2023-12-21 21:37:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:36,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:36,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:36,372 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:36,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-12-21 21:37:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:36,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:37:36,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 21:37:36,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:36,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:36,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36890191] [2023-12-21 21:37:36,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36890191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:36,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:36,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:36,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567618968] [2023-12-21 21:37:36,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:36,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:37:36,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:36,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:37:36,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:36,656 INFO L87 Difference]: Start difference. First operand 6263 states and 8974 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:37:37,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:37,223 INFO L93 Difference]: Finished difference Result 14179 states and 18554 transitions. [2023-12-21 21:37:37,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:37:37,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 165 [2023-12-21 21:37:37,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:37,244 INFO L225 Difference]: With dead ends: 14179 [2023-12-21 21:37:37,244 INFO L226 Difference]: Without dead ends: 10051 [2023-12-21 21:37:37,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:37,254 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 4310 mSDsluCounter, 4352 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4315 SdHoareTripleChecker+Valid, 8606 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:37,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4315 Valid, 8606 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 21:37:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10051 states. [2023-12-21 21:37:37,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10051 to 10049. [2023-12-21 21:37:37,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10049 states, 9424 states have (on average 1.3614176570458405) internal successors, (12830), 9455 states have internal predecessors, (12830), 319 states have call successors, (319), 272 states have call predecessors, (319), 304 states have return successors, (387), 323 states have call predecessors, (387), 319 states have call successors, (387) [2023-12-21 21:37:37,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10049 states to 10049 states and 13536 transitions. [2023-12-21 21:37:37,726 INFO L78 Accepts]: Start accepts. Automaton has 10049 states and 13536 transitions. Word has length 165 [2023-12-21 21:37:37,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:37,726 INFO L495 AbstractCegarLoop]: Abstraction has 10049 states and 13536 transitions. [2023-12-21 21:37:37,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:37:37,727 INFO L276 IsEmpty]: Start isEmpty. Operand 10049 states and 13536 transitions. [2023-12-21 21:37:37,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 21:37:37,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:37,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:37:37,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:37,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:37,935 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:37,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:37,936 INFO L85 PathProgramCache]: Analyzing trace with hash 861717459, now seen corresponding path program 1 times [2023-12-21 21:37:37,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:37,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508926277] [2023-12-21 21:37:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:37,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:37,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:37,938 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:37,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-21 21:37:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:38,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:37:38,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:38,064 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 21:37:38,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:38,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:38,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508926277] [2023-12-21 21:37:38,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508926277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:38,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:38,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:37:38,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680601683] [2023-12-21 21:37:38,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:38,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:37:38,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:38,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:37:38,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:37:38,066 INFO L87 Difference]: Start difference. First operand 10049 states and 13536 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:37:38,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:38,367 INFO L93 Difference]: Finished difference Result 17955 states and 23077 transitions. [2023-12-21 21:37:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:37:38,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 165 [2023-12-21 21:37:38,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:38,389 INFO L225 Difference]: With dead ends: 17955 [2023-12-21 21:37:38,389 INFO L226 Difference]: Without dead ends: 10041 [2023-12-21 21:37:38,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:37:38,405 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 281 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 8176 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:38,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 8176 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:37:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10041 states. [2023-12-21 21:37:38,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10041 to 10041. [2023-12-21 21:37:38,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10041 states, 9419 states have (on average 1.3611848391548997) internal successors, (12821), 9449 states have internal predecessors, (12821), 316 states have call successors, (316), 272 states have call predecessors, (316), 304 states have return successors, (384), 320 states have call predecessors, (384), 316 states have call successors, (384) [2023-12-21 21:37:38,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10041 states to 10041 states and 13521 transitions. [2023-12-21 21:37:38,865 INFO L78 Accepts]: Start accepts. Automaton has 10041 states and 13521 transitions. Word has length 165 [2023-12-21 21:37:38,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:38,865 INFO L495 AbstractCegarLoop]: Abstraction has 10041 states and 13521 transitions. [2023-12-21 21:37:38,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:37:38,865 INFO L276 IsEmpty]: Start isEmpty. Operand 10041 states and 13521 transitions. [2023-12-21 21:37:38,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-21 21:37:38,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:38,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:37:38,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:39,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:39,074 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:39,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:39,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1473247180, now seen corresponding path program 1 times [2023-12-21 21:37:39,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:39,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812760153] [2023-12-21 21:37:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:39,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:39,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:39,077 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:39,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-12-21 21:37:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:39,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:37:39,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 21:37:39,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:39,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:39,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812760153] [2023-12-21 21:37:39,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812760153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:39,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:39,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:39,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041562258] [2023-12-21 21:37:39,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:39,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:37:39,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:39,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:37:39,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:39,370 INFO L87 Difference]: Start difference. First operand 10041 states and 13521 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:37:40,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:40,161 INFO L93 Difference]: Finished difference Result 25168 states and 31783 transitions. [2023-12-21 21:37:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:37:40,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 167 [2023-12-21 21:37:40,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:40,191 INFO L225 Difference]: With dead ends: 25168 [2023-12-21 21:37:40,191 INFO L226 Difference]: Without dead ends: 17262 [2023-12-21 21:37:40,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:40,207 INFO L413 NwaCegarLoop]: 4240 mSDtfsCounter, 4303 mSDsluCounter, 4334 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4309 SdHoareTripleChecker+Valid, 8574 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:40,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4309 Valid, 8574 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:37:40,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17262 states. [2023-12-21 21:37:40,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17262 to 17260. [2023-12-21 21:37:40,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17260 states, 16067 states have (on average 1.2975042011576523) internal successors, (20847), 16134 states have internal predecessors, (20847), 599 states have call successors, (599), 512 states have call predecessors, (599), 592 states have return successors, (763), 615 states have call predecessors, (763), 599 states have call successors, (763) [2023-12-21 21:37:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17260 states to 17260 states and 22209 transitions. [2023-12-21 21:37:40,889 INFO L78 Accepts]: Start accepts. Automaton has 17260 states and 22209 transitions. Word has length 167 [2023-12-21 21:37:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:40,890 INFO L495 AbstractCegarLoop]: Abstraction has 17260 states and 22209 transitions. [2023-12-21 21:37:40,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:37:40,890 INFO L276 IsEmpty]: Start isEmpty. Operand 17260 states and 22209 transitions. [2023-12-21 21:37:40,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-21 21:37:40,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:40,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:37:40,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:41,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:41,103 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:41,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:41,104 INFO L85 PathProgramCache]: Analyzing trace with hash -721981686, now seen corresponding path program 1 times [2023-12-21 21:37:41,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:41,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646015938] [2023-12-21 21:37:41,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:41,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:41,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:41,105 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:41,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-12-21 21:37:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:41,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:37:41,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:41,222 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 21:37:41,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:41,222 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:41,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646015938] [2023-12-21 21:37:41,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646015938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:41,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:41,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:37:41,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129293821] [2023-12-21 21:37:41,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:41,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:37:41,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:41,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:37:41,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:37:41,224 INFO L87 Difference]: Start difference. First operand 17260 states and 22209 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:37:41,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:41,842 INFO L93 Difference]: Finished difference Result 32378 states and 40426 transitions. [2023-12-21 21:37:41,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:37:41,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 167 [2023-12-21 21:37:41,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:41,870 INFO L225 Difference]: With dead ends: 32378 [2023-12-21 21:37:41,870 INFO L226 Difference]: Without dead ends: 17253 [2023-12-21 21:37:41,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:37:41,892 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 279 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 8175 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:41,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 8175 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:37:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17253 states. [2023-12-21 21:37:42,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17253 to 17253. [2023-12-21 21:37:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17253 states, 16063 states have (on average 1.2973915208865094) internal successors, (20840), 16129 states have internal predecessors, (20840), 596 states have call successors, (596), 512 states have call predecessors, (596), 592 states have return successors, (760), 612 states have call predecessors, (760), 596 states have call successors, (760) [2023-12-21 21:37:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17253 states to 17253 states and 22196 transitions. [2023-12-21 21:37:42,601 INFO L78 Accepts]: Start accepts. Automaton has 17253 states and 22196 transitions. Word has length 167 [2023-12-21 21:37:42,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:42,601 INFO L495 AbstractCegarLoop]: Abstraction has 17253 states and 22196 transitions. [2023-12-21 21:37:42,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:37:42,601 INFO L276 IsEmpty]: Start isEmpty. Operand 17253 states and 22196 transitions. [2023-12-21 21:37:42,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-21 21:37:42,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:42,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:37:42,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:42,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:42,812 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:42,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:42,813 INFO L85 PathProgramCache]: Analyzing trace with hash -477135023, now seen corresponding path program 1 times [2023-12-21 21:37:42,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:42,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221032543] [2023-12-21 21:37:42,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:42,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:42,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:42,815 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:42,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-21 21:37:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:42,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:37:42,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 21:37:43,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:43,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:43,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221032543] [2023-12-21 21:37:43,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221032543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:43,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:43,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:43,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599149997] [2023-12-21 21:37:43,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:43,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:37:43,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:43,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:37:43,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:43,075 INFO L87 Difference]: Start difference. First operand 17253 states and 22196 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:37:44,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:44,371 INFO L93 Difference]: Finished difference Result 49679 states and 61065 transitions. [2023-12-21 21:37:44,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:37:44,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 169 [2023-12-21 21:37:44,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:44,451 INFO L225 Difference]: With dead ends: 49679 [2023-12-21 21:37:44,451 INFO L226 Difference]: Without dead ends: 34561 [2023-12-21 21:37:44,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:44,475 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 4306 mSDsluCounter, 4320 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4312 SdHoareTripleChecker+Valid, 8556 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:44,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4312 Valid, 8556 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:37:44,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34561 states. [2023-12-21 21:37:45,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34561 to 33919. [2023-12-21 21:37:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33919 states, 31286 states have (on average 1.24771463274308) internal successors, (39036), 31625 states have internal predecessors, (39036), 1127 states have call successors, (1127), 960 states have call predecessors, (1127), 1504 states have return successors, (1868), 1335 states have call predecessors, (1868), 1127 states have call successors, (1868) [2023-12-21 21:37:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33919 states to 33919 states and 42031 transitions. [2023-12-21 21:37:45,866 INFO L78 Accepts]: Start accepts. Automaton has 33919 states and 42031 transitions. Word has length 169 [2023-12-21 21:37:45,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:45,866 INFO L495 AbstractCegarLoop]: Abstraction has 33919 states and 42031 transitions. [2023-12-21 21:37:45,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:37:45,866 INFO L276 IsEmpty]: Start isEmpty. Operand 33919 states and 42031 transitions. [2023-12-21 21:37:45,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-21 21:37:45,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:45,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:37:45,884 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 21:37:46,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:46,085 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:46,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:46,085 INFO L85 PathProgramCache]: Analyzing trace with hash 190246867, now seen corresponding path program 1 times [2023-12-21 21:37:46,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:46,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417285539] [2023-12-21 21:37:46,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:46,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:46,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:46,087 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:46,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-12-21 21:37:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:46,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:37:46,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 21:37:46,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:46,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:46,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417285539] [2023-12-21 21:37:46,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417285539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:46,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:46,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:37:46,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292507276] [2023-12-21 21:37:46,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:46,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:37:46,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:46,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:37:46,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:37:46,208 INFO L87 Difference]: Start difference. First operand 33919 states and 42031 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:37:47,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:47,538 INFO L93 Difference]: Finished difference Result 65698 states and 80074 transitions. [2023-12-21 21:37:47,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:37:47,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 169 [2023-12-21 21:37:47,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:47,591 INFO L225 Difference]: With dead ends: 65698 [2023-12-21 21:37:47,591 INFO L226 Difference]: Without dead ends: 33913 [2023-12-21 21:37:47,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:37:47,614 INFO L413 NwaCegarLoop]: 4217 mSDtfsCounter, 277 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 8174 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:47,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 8174 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:37:47,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33913 states. [2023-12-21 21:37:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33913 to 33913. [2023-12-21 21:37:48,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33913 states, 31283 states have (on average 1.247674455774702) internal successors, (39031), 31621 states have internal predecessors, (39031), 1124 states have call successors, (1124), 960 states have call predecessors, (1124), 1504 states have return successors, (1864), 1332 states have call predecessors, (1864), 1124 states have call successors, (1864) [2023-12-21 21:37:48,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33913 states to 33913 states and 42019 transitions. [2023-12-21 21:37:48,971 INFO L78 Accepts]: Start accepts. Automaton has 33913 states and 42019 transitions. Word has length 169 [2023-12-21 21:37:48,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:48,971 INFO L495 AbstractCegarLoop]: Abstraction has 33913 states and 42019 transitions. [2023-12-21 21:37:48,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:37:48,971 INFO L276 IsEmpty]: Start isEmpty. Operand 33913 states and 42019 transitions. [2023-12-21 21:37:48,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-21 21:37:48,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:48,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:37:48,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-12-21 21:37:49,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:49,188 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:49,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:49,189 INFO L85 PathProgramCache]: Analyzing trace with hash 244280076, now seen corresponding path program 1 times [2023-12-21 21:37:49,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:49,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492271027] [2023-12-21 21:37:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:49,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:49,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:49,190 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:49,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-12-21 21:37:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:49,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:37:49,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 21:37:49,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:49,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:49,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492271027] [2023-12-21 21:37:49,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492271027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:49,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:49,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:49,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557429623] [2023-12-21 21:37:49,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:49,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:37:49,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:49,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:37:49,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:49,451 INFO L87 Difference]: Start difference. First operand 33913 states and 42019 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:37:52,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:37:52,134 INFO L93 Difference]: Finished difference Result 93657 states and 113413 transitions. [2023-12-21 21:37:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:37:52,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 171 [2023-12-21 21:37:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:37:52,250 INFO L225 Difference]: With dead ends: 93657 [2023-12-21 21:37:52,251 INFO L226 Difference]: Without dead ends: 61879 [2023-12-21 21:37:52,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:37:52,278 INFO L413 NwaCegarLoop]: 4150 mSDtfsCounter, 4302 mSDsluCounter, 4248 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4308 SdHoareTripleChecker+Valid, 8398 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:37:52,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4308 Valid, 8398 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:37:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61879 states. [2023-12-21 21:37:54,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61879 to 61877. [2023-12-21 21:37:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61877 states, 56879 states have (on average 1.2230700258443363) internal successors, (69567), 57553 states have internal predecessors, (69567), 2116 states have call successors, (2116), 1792 states have call predecessors, (2116), 2880 states have return successors, (3608), 2532 states have call predecessors, (3608), 2116 states have call successors, (3608) [2023-12-21 21:37:55,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61877 states to 61877 states and 75291 transitions. [2023-12-21 21:37:55,075 INFO L78 Accepts]: Start accepts. Automaton has 61877 states and 75291 transitions. Word has length 171 [2023-12-21 21:37:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:37:55,076 INFO L495 AbstractCegarLoop]: Abstraction has 61877 states and 75291 transitions. [2023-12-21 21:37:55,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:37:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 61877 states and 75291 transitions. [2023-12-21 21:37:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 21:37:55,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:37:55,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:37:55,100 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 (32)] Forceful destruction successful, exit code 0 [2023-12-21 21:37:55,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:55,300 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:37:55,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:37:55,301 INFO L85 PathProgramCache]: Analyzing trace with hash 450370513, now seen corresponding path program 1 times [2023-12-21 21:37:55,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:37:55,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936747805] [2023-12-21 21:37:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:37:55,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:37:55,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:37:55,302 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:37:55,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-12-21 21:37:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:37:55,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 21:37:55,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:37:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 21:37:55,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:37:55,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:37:55,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936747805] [2023-12-21 21:37:55,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936747805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:37:55,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:37:55,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 21:37:55,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145687501] [2023-12-21 21:37:55,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:37:55,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 21:37:55,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:37:55,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 21:37:55,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 21:37:55,599 INFO L87 Difference]: Start difference. First operand 61877 states and 75291 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:38:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:38:00,364 INFO L93 Difference]: Finished difference Result 173749 states and 208732 transitions. [2023-12-21 21:38:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 21:38:00,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 173 [2023-12-21 21:38:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:38:00,583 INFO L225 Difference]: With dead ends: 173749 [2023-12-21 21:38:00,583 INFO L226 Difference]: Without dead ends: 114007 [2023-12-21 21:38:00,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 21:38:00,626 INFO L413 NwaCegarLoop]: 4199 mSDtfsCounter, 4283 mSDsluCounter, 4281 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4289 SdHoareTripleChecker+Valid, 8480 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 21:38:00,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4289 Valid, 8480 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 21:38:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114007 states. [2023-12-21 21:38:05,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114007 to 114005. [2023-12-21 21:38:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114005 states, 104460 states have (on average 1.2087306145893164) internal successors, (126264), 105839 states have internal predecessors, (126264), 3975 states have call successors, (3975), 3328 states have call predecessors, (3975), 5568 states have return successors, (7035), 4839 states have call predecessors, (7035), 3975 states have call successors, (7035) [2023-12-21 21:38:05,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114005 states to 114005 states and 137274 transitions. [2023-12-21 21:38:05,741 INFO L78 Accepts]: Start accepts. Automaton has 114005 states and 137274 transitions. Word has length 173 [2023-12-21 21:38:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:38:05,742 INFO L495 AbstractCegarLoop]: Abstraction has 114005 states and 137274 transitions. [2023-12-21 21:38:05,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-21 21:38:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 114005 states and 137274 transitions. [2023-12-21 21:38:05,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 21:38:05,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:38:05,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:38:05,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-12-21 21:38:05,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:38:05,983 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:38:05,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:38:05,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1854239699, now seen corresponding path program 1 times [2023-12-21 21:38:05,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:38:05,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886223867] [2023-12-21 21:38:05,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:38:05,984 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:38:05,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:38:05,986 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:38:05,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-21 21:38:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:38:06,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:38:06,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:38:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 21:38:06,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:38:06,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:38:06,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886223867] [2023-12-21 21:38:06,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886223867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:38:06,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:38:06,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:38:06,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125623532] [2023-12-21 21:38:06,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:38:06,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:38:06,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:38:06,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:38:06,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:38:06,111 INFO L87 Difference]: Start difference. First operand 114005 states and 137274 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:38:11,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:38:11,034 INFO L93 Difference]: Finished difference Result 225871 states and 270563 transitions. [2023-12-21 21:38:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:38:11,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 173 [2023-12-21 21:38:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:38:11,293 INFO L225 Difference]: With dead ends: 225871 [2023-12-21 21:38:11,293 INFO L226 Difference]: Without dead ends: 114001 [2023-12-21 21:38:11,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:38:11,492 INFO L413 NwaCegarLoop]: 4216 mSDtfsCounter, 274 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 8173 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 21:38:11,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 8173 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 21:38:11,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114001 states. [2023-12-21 21:38:16,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114001 to 114001. [2023-12-21 21:38:16,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114001 states, 104459 states have (on average 1.208723039661494) internal successors, (126262), 105837 states have internal predecessors, (126262), 3972 states have call successors, (3972), 3328 states have call predecessors, (3972), 5568 states have return successors, (7032), 4836 states have call predecessors, (7032), 3972 states have call successors, (7032) [2023-12-21 21:38:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114001 states to 114001 states and 137266 transitions. [2023-12-21 21:38:16,604 INFO L78 Accepts]: Start accepts. Automaton has 114001 states and 137266 transitions. Word has length 173 [2023-12-21 21:38:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:38:16,604 INFO L495 AbstractCegarLoop]: Abstraction has 114001 states and 137266 transitions. [2023-12-21 21:38:16,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-21 21:38:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 114001 states and 137266 transitions. [2023-12-21 21:38:16,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-21 21:38:16,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:38:16,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 21:38:16,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-12-21 21:38:16,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:38:16,842 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:38:16,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:38:16,842 INFO L85 PathProgramCache]: Analyzing trace with hash 468043340, now seen corresponding path program 1 times [2023-12-21 21:38:16,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:38:16,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111387828] [2023-12-21 21:38:16,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:38:16,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:38:16,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:38:16,844 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:38:16,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-12-21 21:38:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:38:16,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:38:16,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:38:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 21:38:17,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:38:17,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:38:17,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111387828] [2023-12-21 21:38:17,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111387828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:38:17,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:38:17,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 21:38:17,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895728188] [2023-12-21 21:38:17,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:38:17,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:38:17,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:38:17,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:38:17,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:38:17,013 INFO L87 Difference]: Start difference. First operand 114001 states and 137266 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 21:38:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 21:38:25,467 INFO L93 Difference]: Finished difference Result 316237 states and 379088 transitions. [2023-12-21 21:38:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 21:38:25,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 175 [2023-12-21 21:38:25,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 21:38:25,968 INFO L225 Difference]: With dead ends: 316237 [2023-12-21 21:38:25,968 INFO L226 Difference]: Without dead ends: 159565 [2023-12-21 21:38:26,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:38:26,106 INFO L413 NwaCegarLoop]: 4446 mSDtfsCounter, 234 mSDsluCounter, 4209 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 8655 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 21:38:26,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 8655 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 21:38:26,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159565 states. [2023-12-21 21:38:32,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159565 to 159565. [2023-12-21 21:38:33,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159565 states, 146087 states have (on average 1.203549939419661) internal successors, (175823), 147929 states have internal predecessors, (175823), 5700 states have call successors, (5700), 4736 states have call predecessors, (5700), 7776 states have return successors, (10162), 6900 states have call predecessors, (10162), 5700 states have call successors, (10162) [2023-12-21 21:38:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159565 states to 159565 states and 191685 transitions. [2023-12-21 21:38:33,487 INFO L78 Accepts]: Start accepts. Automaton has 159565 states and 191685 transitions. Word has length 175 [2023-12-21 21:38:33,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 21:38:33,488 INFO L495 AbstractCegarLoop]: Abstraction has 159565 states and 191685 transitions. [2023-12-21 21:38:33,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 21:38:33,488 INFO L276 IsEmpty]: Start isEmpty. Operand 159565 states and 191685 transitions. [2023-12-21 21:38:33,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-21 21:38:33,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 21:38:33,541 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 21:38:33,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-12-21 21:38:33,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:38:33,746 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 21:38:33,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 21:38:33,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1402556393, now seen corresponding path program 1 times [2023-12-21 21:38:33,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 21:38:33,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575463312] [2023-12-21 21:38:33,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 21:38:33,747 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 21:38:33,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 21:38:33,748 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 21:38:33,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-12-21 21:38:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 21:38:33,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 21:38:33,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 21:38:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 21:38:34,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 21:38:34,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 21:38:34,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575463312] [2023-12-21 21:38:34,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575463312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 21:38:34,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 21:38:34,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 21:38:34,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113536990] [2023-12-21 21:38:34,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 21:38:34,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 21:38:34,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 21:38:34,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 21:38:34,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 21:38:34,039 INFO L87 Difference]: Start difference. First operand 159565 states and 191685 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)